Speed wobbles come from you anckles trying to correct you balance. My advice is put feet facing forward ish in the centre of the board and let your ankles relax and bend your knees heaps
you have the weight too high. when I, or any other person does DH they are in a tuck which lowers the center of gravity. you need the weight at about mid thigh height. Also, try actually riding a longboard.
I respect the fact you took the time to find and answer by building a simulation, but speed wobbles depend on truck angle, if they're inverted, and speed wobbles happen mainly from tensing or sudden movements, so basically being uncomfortable with your board.
Wouldnt it make more sense for a rider to just hold on to the ladder and be pulled? If it speed wobbles then he could just pull himself up so he wouldnt faceplant...
It seems you're taking a gun to a knife fight, and then attempting to use technology to make the knife equal to the gun.
This board was narrow and flexy with narrow, loose trucks, cruising wheels, and risers. That's great for boardwalk cruising, but a set of 180mm+ trucks, better wheels, harder bushings, longer, wider, stiff board would solve the problem.
The best way to counteract speed wobbles is to get a board built for speed, not figuring out how to make a square peg fit in a round hole.
I'm really really confused by this...85% of speed wobbles are the rider, the rest is the equipment. This apparatus of a s9 doesn't consider weight placement, muscle strength, or muscle activation which aim to keep the board level, which = stability, which = controlling wobbles. Slapping on 80 pounds of weight won't do any justice since we are reflexive adaptive human beings bombing a hill. I mean I can pedal faster than 15 mph on 1 foot 2nd nature, so no offense man, but its all rider input :/
different weight distrubtion can greatly affect speed wobbles too, example - if the person riding the board is self center/lean forward, it's a lot less change he'll get speed wobble than if he's riding with his weight on his back feet. things in that nature. I always wonder what cause speed wobble (yes if anyone want to answer speed, thank you....).
cool apparatus, but you should try something that eliminates ALL or most of the independent variables that are introduced by your contraption. Maybe use a brave teenager that longboards to do it. Have him suspended by some overhead extension of your truck, similar to what you just built, and lift him up to safety whenever a speed wobble occurs. just an idea haha.
I really like the idea of this study but the rigging does bring in other non human problems like the natural ability to counteract off balancing movement from the board. Please keep working on this idea, i'd love to see more innovation and study on this topic.
Put your weight on the front of your board, thats what gets rid of them. Don't believe me? Try it. If you start getting the wobbles just put more weight towards the front of your board. DUH
The CG of a skateboarder is dynamic and is very hard to simulate accurately. If you use a pendulum that moves the CG for/aft left/right you may get results. Variables that also have an effect are the vehicle suspension and steering input. Speed wobbles are a result of the rider input oscillations as the board reacts faster than they can. Change the King Pin angle, Roll Centre, Bushes, Deck Height and Truck position Top/Bottom and wheelbase all effect SW's.
google videos of Mischo Erban (Type Mischo ERban 80.83) and click on the one if wide screen format. His tuck is where both his speed and stability come from. Truly a rocket man. This hiss of his bearings sounds like shattering plate glass.
Mischo Erban shattered his own IGSA Downhill Skateboarding World Speed Record on Thursday, September 31, 2010 when he reached a speed of 130.08 km/h (80.83 mph) at a secret location in Colorado. This represents an astonishing increase of 13% over his previous record of 113.02 km/h (70.23 mph).
@Looknround0568 Well most downhill racers, which Mischo Erban is, use trucks specifically designed for speed and stability (not carving) such as Bear Smokies or JimZ's. I believe (someone correct me if I am wrong) that these trucks have a lower kingpin angle so less lean is transferred into actual direction changing. Hard barrel shaped bushings give additional stability. Downhill decks are heavier than a sector nine and have minimal flex if any. Sometimes the front of the deck is lower than rear
@mratliff2111 Sounds about right. Some people ride 50 degree (normal) angle downhill but most tend to have much less of an angle for stability. Personally, I ride Randal 42 baseplates with Paris 195 hangers to be low and wide... I can still turn on a dime but it's super stable at speed. Also, the stiffness of the board totally affects how stable it is at speeds. With the same setup, my Dervish is sketchy as hell at 35-40 but my Nemesis feels stable and locked in.
@Looknround0568 mischo hit that speed using a gmr board and 85mm seismic speed vents duro 75a most likely he was using his ronin trucks. i think he rides relatively hard bushing but im not sure, i dont know what bearings he was using either. Also having the trucks really tight are more likely to cause uncontrollable wobbles. overall speed wobbles are all in the head. if you can keep your balance n not freak out and over-adjust you should be fine.
"A goal of this study is to scientifically analyse (sp) speed woobles in skateboards so as to quantitatively rate skateboard designs."
There are too many variables (i.e. bushing setup, truck style, kingpin angle, wheels, deck shape, rider weight, road slode, pavement type, wind, bolt tightness) to rate a skateboards safeness. Designing a skateboard around speed wobbles is like designing a car around hydroplaning. It just doesn't make sense. And yes, we all know that stock sector 9's are crap.
@mratliff2111 - I like your car analogy but aren't car tires designed to resist hydroplaning?
If more riders understood speed wobble basics and how to avoid it then there would be fewer injuries from it. Similar to hydroplaning risks in a car, a longboard rider should know when wobble might happen, what makes it more likely, and how best to avoid it.
@xXxdaguitarfreakxXx You're right. There are several silly comments. To restate a technical explanation - This test demonstrates that a rider/vehicle model will exhibit speed wobble at certain speeds. This proves that speed wobble is not strictly a human induced phenomenon. A goal of this study is to scientifically analyse speed wobble in skateboards so as to quantitatively rate skateboard designs. These are the initial results at creating a test fixture for that study.
Good job man! Glad to see their are still people out there willing to spend time on figuring out a problem. Even though we all might have common sense solutions, it never hurts to try and figure out a scientific one!
Seriously? This does not even come close to recreating an actual human riding a board. I get that you are just experimenting to try and understand speed wobbles but just get out there and ride. You just need nerves of steel and faith in your equipment.
If you want to learn how to longboard, the only way to learn, is to board. You don't wobble because of speed, you wobble because your trucks are loose and you suck at boarding. The longer you are on the board, the more confidence you gain, and the faster you can go, and still control the board like you do at slow speeds. Speed wobbles don't happen because of anything other than lack of skill and confidence. If your muscles don't remain loose, you will never ride smooth. Stop trying to complicate
I agree with your reasoning for wanting to test this.. but I think anyone thats ever stepped on a board knows speedwobbles are created by instability from the top of the board (the skater him/herself) ofcourse surface plays a part, but humans are mainly responsible for the wobble and humans can correct the wobble... I think youd be better of performing neurological research to see why some athletes are able to controll their board better than others.. Instead of beeing a traffic hazzard lol
@kevsandwhorr To appreciate this video you need an inquisitive mind and a desire for infomation that can make the sport safer. Knowing about speed wobble could actually save your life - all the minutes you still have left.
that cant imitate a persons feet on the board. Idc how many times you analyze that you could go to a big hill and fail because your lack of skill, you would be unable to compensate for errors in the grade of the road or pebbles or too loose or tight. you will see.
@Looknround0568 the only way to know speed wobble is to experience it, the only way to master is it, stay calm, keep a strong body and mind. everyone think that wobbles come from loose trucks and going to fast, but I can bomb a hill at 45mph with pretty loose trucks. this video is truly pointless and teach nothing. some helpful advise, put a helmet on, bomb down a big hill and you will learn how well you really know speed wobbles
Speed wobbles are caused by your muscles tightening and then your body overcorrects it's movements and that is how you get the back and forth movements. Speed wobbles can be controlled by a mental mindset and the ability to relax your muscles at speeds where you would get speed wobbles. Also, a good pair of trucks would help! And in this simulation, it looks like the setup could not re-create the weight balance of a rider.
@Looknround0568 Well, really, it all depends on what you are looking for in a truck. Do you want fast and steady but can't turn very easily (Paris), or do you want a set of trucks that is meant for slower speeds, tricks, and cruising (Original)? I applaud your research, though! I'm glad you are trying to further enhance longboarding!
@Looknround0568 A good pair of trucks in speedboarding / DH longboarding are often wide trucks (180-220 mm hangers) in witch the hanger is mounted in a lower angle... A good example is the Bear Grizzly 840.
@EnjoiEmerica11 The geometry of a specific riding stance is being simulated. This test demonstrates that a rider/vehicle model will exhibit speed wobble at certain speeds. This proves that speed wobble is not strictly a human induced phenomenon. A goal of this study is to scientifically analyse speed wobble in skateboards so as to quantitatively rate skateboard designs. These are the initial results at creating a test fixture for that study
I dunno hey, I understand what you are trying to do, but skateboarding in any from is about the skill, would this not strip it of what is about? also I dunno if a board thats easy to get to high speeds without wobbles is safe, imagine an inexperianceed person going 50mph down a hill. just because the wobbles are out of the way, dosnt mean there are other problems they will not encounter. personnaly I feel the speed wobble tests the skill of the rider before they end up going too fast.
@aracabushcabar - Your personal feeling that speed wobble tends to act as a speed limiting skill test is interesting. If a full disclosure of the nature of wobble was revealed in that light it would certainly promote the use of safety gear! Families devastated by deaths from speed wobble would argue against it. As in - "The death of Robert Harris." Also, Google "Carl Stillman Olson" and read of another new skater dieing from wobble in Boulder, CO. Wobble is not a safety feature.
@Looknround0568 I am not arguing the fact that a wobble can kill you, but elliminating the wobble will only leave 1000000 other unsolved deadly possibilities. thing is for an experianced rider the speed wobble is probably the smallest of problems which could lead to injury or death. thing is if you are going to be riding a skateboard of any nature. death is a possibility.
@Looknround0568 why r u trying to test this? if ur good then ur alive. it's a sport and u don't need to make some sort of handicaps so that everyone would be equal. only the best get to enjoy the victory and no speed wobbles. deal with it.
@marty1091 To my way of thinking, speed wobble is like the "bends" in scuba diving. If you understand it then you can avoid it - and that should be important to anyone using a longboard!
@Looknround0568 u can't understand speed wobbles. they just happen. the better u r u just learn to control them. they're freaks and u deal with them by getting better with time, not by wasting that time to put together some useless rack that will tell u nothing.
man, im really sorry, but you teory, is shit to me, and to any respectable speedboarder, skateboards, wasn't made to study, they were made to perform, you cant recreate nothing like a man riding his skate, it depends on a lot of factors, i've reached the mark of 63mph, with no wobbles...that's all about a good rider, a good truck, and a good position.
@gabirobaa10 - OK, let me ask for your advice, as a "respectable speedboarder" is there any unsafe speed for the Sector 9 trucks and Cruiser style board shown in this test? Could a "good rider" in a "good position" expect to avoid speed wobble on this board all the way up to 63 mph?
there are lot of factors to consider in the aspect of speed boarding. wobbles come from a lack of balance, strength, and mindset. speed wobbles are 70% mental, 20% skill, and 10% outside factors that we cannot control. The reason your rig got wobbles is because of many reasons. for example, the stance. a rigid stance (wooden legs, cough cough) is going to cause speed wobbles ever time. only a real rider can prevent wobbles because the leg muscles absorb them and keep balance.
@1993TJB - High speed longboarders should realize that an incomplete understanding of speed wobble could kill them. Speed wobble is not a mental problem.
@Looknround0568 I think no-one understands a speed wobble better than the rider. anything can get a speed wobble, motorcycles, cars etc... I dont ythink you should be looking to "improve the understanding" as its pretty obvious its a play of basic physics. however focusing that side on the actual construction of trucks and spacing, may be a way to elliminate the need for "feeling the board" and make it more about numbers.
a speed wobble is a balancing force that works to balance the longboard by itself that's why when you get speed wobbles your told to have your ankles loose its when you try and balance the speed wobble by yourself is when you get into trouble because you will lock your ankles. And longboarding is a sport and with any sport you always have a risk of injury.
on another note your gear does matter. for example, the bushings. different shaped bushings perform differently. and your trucks are also made to perform for a certain style of riding. speed wobble cannot be prevented 100% of the time all the time. speed wobbles are mostly mental. the only way to learn (study in your case) how to prevent speed wobbles it to stop being a pussy and actual ride the board. if you dont practice you cant get better. if you dont get better you cant prevent wobbles.
loved it. Great experiment. Thanks for taking the time and effort=) I have been skating for over 10 years now and this was very entertaining to watch =)
thanks for asking - this test demonstrates that a rider/vehicle model will exhibit speed wobble at certain speeds. This proves that speed wobble is not strictly a human induced phenomenon. A goal of this study is to scientifically analyse speed wobble in skateboards so as to quantitatively rate skateboard designs. These are the initial results at creating a test fixture for that study.
As many people have said here, parts are a big factor. Especially without a human manning the skateboard, things like bushings, washers, bearings, wheels, trucks are all factors. Example:Subsonic DH boards are typically concave and are low riding, making is less prone to speed wobble. These physics can be applied similarly to cars.
Yes, the parts and design are major factors. The geometry of the rider/board/trucks determine when the vibration starts. Skateboards have more in common with motorcycles and bicycles than cars. Skateboards are "two-point suspension vehicles."
this is totally dumb and pointless. speed wobbles occur from being unbalanced on your board. Balance comes with experience. To accurately test how fast you need to go to experience speed wobbles, you would have to rig a rider on a treadmill and slowly increase the speed. Then you can test ways to cancel out speed wobbles. Congratulations, you just wasted all that time, equipment, and money inaccurately testing a hypothesis.
Parts aren't a very big factor compared to rider experience. I can take my S9 Race with loose-ass Bear 852's to a much faster speed than my friend can with the same board, much harder bushings and flipped hangars.
Yes, as Looknround said in an earlier post, experienced riders are able to resist wobble. In terms of bombing hills, I think confidence plays the biggest roll. For example, when I bomb hills I put a lot of force on the upper deck and lean when needed (allowing for speeds around 30-40mph). A noob would probably apply pressure incorrectly and/or lose balance and eat it.
you need to use reverse kingpin trucks those trucks were never made to go fast you should try testing a rayne avenger or hellcat or a EARTHWING mystery model from my experience with DH those have all been my race setups at 1 time or another and with bear smokies or randal comp trucks they are very stable at 50mph+
u should start by not using a gash board like sector 9 and put the weight where longboarders would actually place their feet, ie front foot on the front truck and back foot near center most weight on the front foot. but it gives a good idea and demonstrates what speed wobble looks like.
okay... now try this with a downhill longboard... this is more of a cruiser longboard. Also a more experienced rider can resist speed wobbles even at high speeds like 60mph
You are right about longboard design being important in determining when speed wobble will happen. Rather than say experienced riders "resist" speed wobble I would say they actually "avoid" speed wobble ever happening to them. Proper stance and board design are significant factors in preventing speed wobble from ever getting started.
U need somthing that will repesent human ankles where it can handle those turns. And it has Benny provenbtgat looser trucks wobble less then tight trucks
i actually think this is pretty cool and its something that can be usefull. At least he finds a way to occupate himself not like somebody that posted a comments 3weeks before me
This effort seems very worthwhile to me. Riders are being injured by this phenomenon. If speed wobble can be minimized by better designs then injuries can be prevented from ever happening. How cool is that?
ya its called tucking and getting a rayne board or anyother drop down board. and a phenomenon?!?! more like some retard going down a hill he nows he cant
thanks for asking - this test demonstrates that a rider/vehicle model will exhibit speed wobble at certain speeds. This proves that speed wobble is not strictly a human induced phenomenon. A goal of this study is to scientifically analyse speed wobble in skateboards so as to quantitatively rate skateboard designs. These are the initial results at creating a test fixture for that study.
The intent of this set up is to eventually compare design variables. Variables such as truck design, wheel base length, board stiffness, kingpin nut tortion, etc. We will tighten the kingpin nut and monitor the new speed at which wobble occures for example. Removing the human as a variable will allow for better comparisons.
All that knowledge has already been found... you can never get exact variables anyway. Tight truck = more stable. Long wheelbase = more stable. Skatetrucks stable, randal design less stable, sidewinders turn like hell.
why not test it on a human since it's made for a human?
Downhill longboarders usually distribute most of their weight towards the front of the board for stability at high speeds. It might be interesting if you could try to simulate this with your test rig and see how much difference it actually makes.
Also, I hope you rewarded your driver with lots of chocolate.
this has to be the biggest waste of time and money i have seen in awhile sure you take out the "human element" but why would you want to humans are going to be riding it and anyone can balance better than some weight and a blue pole.....most pointless "scientific testing" ever
OK - OK - OK, I agree, if testing stops with this video then "yes," that would be a waste of initial effort. There needs to be more done - I'm slow. In the mean time the video does show speed wobble without a human's input - that ought to be interesting to riders & makers & sellers.
wow man MY APOLOGIES i really am sorry....i musta been in a real bad mood or somethin last night never meant to come off harsh ....really its cool that at least someone is researching this stuff...all that said i think sime kind of testing with skilled riders will still be more benficial
In my mind, i think its all in the head about the wabbles, because, when i first rode i got wabbles all the time, on any hill, now i know to just keep my legs as stiff and stright and i can bomb any hill, and yes also about the trucks being tightened...i have my tool always with me to tighten my trucks, because, even if your pro and you got bad loose trucks, your gonna get the wabbles...
i dont long board but i do use street skateboards and when i bomb a fat hill i get speed wobles at like 25 30 but the way to couteract the woble is to stand up streight and center your weight and once the wobble has stopped you can skate the rest of the hill without getting speed wobles
thats stupid
SoMissingFive0 2 weeks ago
That sounds like very good advice - thanks.
Looknround0568 2 months ago
Speed wobbles come from you anckles trying to correct you balance. My advice is put feet facing forward ish in the centre of the board and let your ankles relax and bend your knees heaps
Kyl35umm3r5 2 months ago
you have the weight too high. when I, or any other person does DH they are in a tuck which lowers the center of gravity. you need the weight at about mid thigh height. Also, try actually riding a longboard.
nathanness94 3 months ago
trq to aply more presure on back ore front trucks and see whats happen then :)
skyrunner95 3 months ago
What is the best way to avoid speed wobbles?
chanman789456 3 months ago
@chanman789456 There is good advice at Wikihow.com under "Ride downhill on a skateboard"
Looknround0568 3 months ago
dumbest shit ive ever seen in my entire life
andrewp303 3 months ago
hahaha u fail old man
brassmonkey246 5 months ago
Absolute FAIL! I've skated at 116km/h with nom wobbles, wobbles are almost all in your head, unless you hit something
grommetful 6 months ago
just go skate
123456789longboard 6 months ago
I'm not sure of the realisticality of this experiment. But nevertheless, neat contraption.
LIV3TH3M3TAL 6 months ago
This has been flagged as spam show
u have no life
mindlessflanagan 6 months ago
treadmill.....................? anyone?
LBsouth101 6 months ago 2
@LBsouth101 Treadmills would be great but most of them max out at 12 mph. Thanks for the suggestion.
Looknround0568 6 months ago
I respect the fact you took the time to find and answer by building a simulation, but speed wobbles depend on truck angle, if they're inverted, and speed wobbles happen mainly from tensing or sudden movements, so basically being uncomfortable with your board.
chasecoke 7 months ago
wow you really have no balls and lots of time to build gay shit like that? i bet that your mom driving you.
13pandas69ing 7 months ago
@13pandas69ing no need for that comment mother fucker.
ZzZzBENJIzZzZ 7 months ago
Hahahah number two of his conclusion was "Road Dome" HAHAHHAHAHAHHAHAHA!!!!
BeRoyal17 7 months ago
speed wobbles depend on a persons balance, you cant simulate it like that.
ReV0NUE 7 months ago
geek
bennelito94 7 months ago
Wouldnt it make more sense for a rider to just hold on to the ladder and be pulled? If it speed wobbles then he could just pull himself up so he wouldnt faceplant...
theguythatdoesstufff 8 months ago
poor longboard :(
Summerlongboarders37 8 months ago
yeah this is dumb, speed wobbles are just in your head
GoingCamando20 8 months ago
all this and you could of just hired someone to go down a steep hill -_-
colsonisabeast 9 months ago
Good to hear someone speak so confidently regarding the solutions to wobble. You have a special way with analogies.
Looknround0568 9 months ago
It seems you're taking a gun to a knife fight, and then attempting to use technology to make the knife equal to the gun.
This board was narrow and flexy with narrow, loose trucks, cruising wheels, and risers. That's great for boardwalk cruising, but a set of 180mm+ trucks, better wheels, harder bushings, longer, wider, stiff board would solve the problem.
The best way to counteract speed wobbles is to get a board built for speed, not figuring out how to make a square peg fit in a round hole.
ichalz 9 months ago
This has been flagged as spam show
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Frequentflyyers 10 months ago
Close your eyes xD
FuzzyOpposum 10 months ago
I think this is an awesome experiment. This video makes me want to think about intelligent things. Great job bro!!
bumbleinthenight 10 months ago
I'm really really confused by this...85% of speed wobbles are the rider, the rest is the equipment. This apparatus of a s9 doesn't consider weight placement, muscle strength, or muscle activation which aim to keep the board level, which = stability, which = controlling wobbles. Slapping on 80 pounds of weight won't do any justice since we are reflexive adaptive human beings bombing a hill. I mean I can pedal faster than 15 mph on 1 foot 2nd nature, so no offense man, but its all rider input :/
akajambas 10 months ago
wtf ride the board maybe
trex7891011 10 months ago
different weight distrubtion can greatly affect speed wobbles too, example - if the person riding the board is self center/lean forward, it's a lot less change he'll get speed wobble than if he's riding with his weight on his back feet. things in that nature. I always wonder what cause speed wobble (yes if anyone want to answer speed, thank you....).
skyking166 11 months ago
cool apparatus, but you should try something that eliminates ALL or most of the independent variables that are introduced by your contraption. Maybe use a brave teenager that longboards to do it. Have him suspended by some overhead extension of your truck, similar to what you just built, and lift him up to safety whenever a speed wobble occurs. just an idea haha.
huskybro360 11 months ago 13
@huskybro360 A suspended rider situation like that might actually be possible some day - good idea.
Looknround0568 11 months ago 4
@Looknround0568 ill volunteer!!!
TheGabesnell 4 months ago
@huskybro360 I'm pretty sure it's illegal for him to be within 500 feet of a school, nevermind have a teenager tied to the back of his car.
DiiNaMiiKzz 7 months ago
i get to 35 then get wobbles on bear 150mm
devilspawn2479 11 months ago
I really like the idea of this study but the rigging does bring in other non human problems like the natural ability to counteract off balancing movement from the board. Please keep working on this idea, i'd love to see more innovation and study on this topic.
mattblader 11 months ago 6
@mattblader Thanks for the comment. The fixture had to be redesigned to allow for road dome and to give a hands-on handling capability. Stay tuned.
Looknround0568 11 months ago
i go 15 mph when i push on flat land ¬¬
lamby908 1 year ago
make a vid where ur testing it by standing on it :)
richynator5 1 year ago
If you get wobbles at 15, longboarding is not for you
GinkGoBoards 1 year ago
you need a life
supermoose5 1 year ago
Omg this guy is coo
rtrtrt872 1 year ago
seems like a SHIT load of work for... nothing
drippyischilllin 1 year ago
the key to no speed wobbles is staying balanced and staying stable if you start breathing hard and move your feet to much you will hit wobbles
FIREFOX274 1 year ago
WTF IS THIS ....... faggg
bdeem12 1 year ago
speed wobbles are in your head. just put weight on your front truck and they go away, plus strong ankles help too
ironmaidenmanic 1 year ago
LOLOLOL wtf this is stupid
robertlechannel 1 year ago
Put your weight on the front of your board, thats what gets rid of them. Don't believe me? Try it. If you start getting the wobbles just put more weight towards the front of your board. DUH
bluepig47 1 year ago
The CG of a skateboarder is dynamic and is very hard to simulate accurately. If you use a pendulum that moves the CG for/aft left/right you may get results. Variables that also have an effect are the vehicle suspension and steering input. Speed wobbles are a result of the rider input oscillations as the board reacts faster than they can. Change the King Pin angle, Roll Centre, Bushes, Deck Height and Truck position Top/Bottom and wheelbase all effect SW's.
mozzmann 1 year ago
the neghbors are prolly all like wtf is this lunatic doin?
zambina44 1 year ago
dont even bother with this guy.
Makana51 1 year ago
@brushinmateef08 - Although it may appear that speed wobble is in your head, even YOU should wear a helmet.
Looknround0568 1 year ago
@Looknround0568 yeah it's definitely just in your head
GoingCamando20 8 months ago
thats if you have no balance whatsoever,
vette425 1 year ago
Oh, and his wheels were 85mm seismic speedvents.
mratliff2111 1 year ago
google videos of Mischo Erban (Type Mischo ERban 80.83) and click on the one if wide screen format. His tuck is where both his speed and stability come from. Truly a rocket man. This hiss of his bearings sounds like shattering plate glass.
mratliff2111 1 year ago
Mischo Erban shattered his own IGSA Downhill Skateboarding World Speed Record on Thursday, September 31, 2010 when he reached a speed of 130.08 km/h (80.83 mph) at a secret location in Colorado. This represents an astonishing increase of 13% over his previous record of 113.02 km/h (70.23 mph).
mratliff2111 1 year ago
@mratliff2111 - Do you know what kinds of trucks, wheels, adjustments, and other design elements were used to accomplish this?
Looknround0568 1 year ago
@Looknround0568 Well most downhill racers, which Mischo Erban is, use trucks specifically designed for speed and stability (not carving) such as Bear Smokies or JimZ's. I believe (someone correct me if I am wrong) that these trucks have a lower kingpin angle so less lean is transferred into actual direction changing. Hard barrel shaped bushings give additional stability. Downhill decks are heavier than a sector nine and have minimal flex if any. Sometimes the front of the deck is lower than rear
mratliff2111 1 year ago
@mratliff2111 Sounds about right. Some people ride 50 degree (normal) angle downhill but most tend to have much less of an angle for stability. Personally, I ride Randal 42 baseplates with Paris 195 hangers to be low and wide... I can still turn on a dime but it's super stable at speed. Also, the stiffness of the board totally affects how stable it is at speeds. With the same setup, my Dervish is sketchy as hell at 35-40 but my Nemesis feels stable and locked in.
Front-weighting is huge btw.
zlessley 1 year ago
@Looknround0568 mischo hit that speed using a gmr board and 85mm seismic speed vents duro 75a most likely he was using his ronin trucks. i think he rides relatively hard bushing but im not sure, i dont know what bearings he was using either. Also having the trucks really tight are more likely to cause uncontrollable wobbles. overall speed wobbles are all in the head. if you can keep your balance n not freak out and over-adjust you should be fine.
LesPaul4542 1 year ago
Comment removed
mratliff2111 1 year ago
"A goal of this study is to scientifically analyse (sp) speed woobles in skateboards so as to quantitatively rate skateboard designs."
There are too many variables (i.e. bushing setup, truck style, kingpin angle, wheels, deck shape, rider weight, road slode, pavement type, wind, bolt tightness) to rate a skateboards safeness. Designing a skateboard around speed wobbles is like designing a car around hydroplaning. It just doesn't make sense. And yes, we all know that stock sector 9's are crap.
mratliff2111 1 year ago
@mratliff2111 - I like your car analogy but aren't car tires designed to resist hydroplaning?
If more riders understood speed wobble basics and how to avoid it then there would be fewer injuries from it. Similar to hydroplaning risks in a car, a longboard rider should know when wobble might happen, what makes it more likely, and how best to avoid it.
Looknround0568 1 year ago
@Looknround0568 so what's the result? i've been tryna figure out how to avoid speed wobbles coz i just got one a week ago, and i had to get stitches
r3never 1 year ago
@Looknround0568 the best way to avoid it is to be confident in your balance. no confidence leads to speed wobbles
kendog1234 1 year ago
Why do you bother to make this thing? The physics behind a speedwobble is simple.
xylitol88 1 year ago
WHY WOULD YOU D THIS?!?!
madfootylongboards 1 year ago 2
umm why not try riding the board?
BoysNoizeWIN 1 year ago
people dont seem to be getting the point that this is a "research test vehicle"
xXxdaguitarfreakxXx 1 year ago
@xXxdaguitarfreakxXx You're right. There are several silly comments. To restate a technical explanation - This test demonstrates that a rider/vehicle model will exhibit speed wobble at certain speeds. This proves that speed wobble is not strictly a human induced phenomenon. A goal of this study is to scientifically analyse speed wobble in skateboards so as to quantitatively rate skateboard designs. These are the initial results at creating a test fixture for that study.
Looknround0568 1 year ago
@Looknround0568 any results yet? i'd like to hear what you have found out so far.
mycrimsonregrets 1 year ago
why put in all that effort when you could just go skate?
matthewdw94 1 year ago
What was the point of this, there neighbors must think there freaking crazy. I could just imagine them saying there at again!
HorsePlayGaming 1 year ago
Good job man! Glad to see their are still people out there willing to spend time on figuring out a problem. Even though we all might have common sense solutions, it never hurts to try and figure out a scientific one!
bryantocara 1 year ago
You have velcro shoes on for fuck sakes! Like im gonna take advice from anybody who cant even tie his own shoes!
magicshaner 1 year ago
Seriously? This does not even come close to recreating an actual human riding a board. I get that you are just experimenting to try and understand speed wobbles but just get out there and ride. You just need nerves of steel and faith in your equipment.
magicshaner 1 year ago
This was a very informative video, and now i know more a bout speed wobbles.
morgatron24 1 year ago
If you want to learn how to longboard, the only way to learn, is to board. You don't wobble because of speed, you wobble because your trucks are loose and you suck at boarding. The longer you are on the board, the more confidence you gain, and the faster you can go, and still control the board like you do at slow speeds. Speed wobbles don't happen because of anything other than lack of skill and confidence. If your muscles don't remain loose, you will never ride smooth. Stop trying to complicate
kevsandwhorr 1 year ago
I agree with your reasoning for wanting to test this.. but I think anyone thats ever stepped on a board knows speedwobbles are created by instability from the top of the board (the skater him/herself) ofcourse surface plays a part, but humans are mainly responsible for the wobble and humans can correct the wobble... I think youd be better of performing neurological research to see why some athletes are able to controll their board better than others.. Instead of beeing a traffic hazzard lol
plasjepies 1 year ago
why dont you hop on it that would be worth watching!!!
AiRBlAsTeR17 1 year ago
This is by far one of the dumbest wastes of time I've run into! FAIL!!! I demand those 6 minutes of my life back!!
kevsandwhorr 1 year ago 8
@kevsandwhorr To appreciate this video you need an inquisitive mind and a desire for infomation that can make the sport safer. Knowing about speed wobble could actually save your life - all the minutes you still have left.
Looknround0568 1 year ago
that cant imitate a persons feet on the board. Idc how many times you analyze that you could go to a big hill and fail because your lack of skill, you would be unable to compensate for errors in the grade of the road or pebbles or too loose or tight. you will see.
Fu113r420 1 year ago
@Looknround0568 the only way to know speed wobble is to experience it, the only way to master is it, stay calm, keep a strong body and mind. everyone think that wobbles come from loose trucks and going to fast, but I can bomb a hill at 45mph with pretty loose trucks. this video is truly pointless and teach nothing. some helpful advise, put a helmet on, bomb down a big hill and you will learn how well you really know speed wobbles
PERRONmedia 1 year ago
@kevsandwhorr What really is a waste of time is that these dudes spent their time building this fucking thing and not actually longboarding
THAT is a fail
jacksonpalmer1 1 year ago
@kevsandwhorr go earn it back by longboarding lol
dustin102432 1 year ago
your an asshole to your wife at 4 :46 hahahaha!
asulkan 1 year ago
lmao. You're a total tool.
DataSystemCD 1 year ago
Speed wobbles are caused by your muscles tightening and then your body overcorrects it's movements and that is how you get the back and forth movements. Speed wobbles can be controlled by a mental mindset and the ability to relax your muscles at speeds where you would get speed wobbles. Also, a good pair of trucks would help! And in this simulation, it looks like the setup could not re-create the weight balance of a rider.
Endlessdonut97 1 year ago
@Endlessdonut97 What makes for "a good pair of trucks?" For example, can you describe what it is to look for in a "good pair of trucks?"
Looknround0568 1 year ago
@Looknround0568 Well, really, it all depends on what you are looking for in a truck. Do you want fast and steady but can't turn very easily (Paris), or do you want a set of trucks that is meant for slower speeds, tricks, and cruising (Original)? I applaud your research, though! I'm glad you are trying to further enhance longboarding!
Endlessdonut97 1 year ago
@Looknround0568 gullwing chargers
chadfay56 1 year ago
@Looknround0568 A good pair of trucks in speedboarding / DH longboarding are often wide trucks (180-220 mm hangers) in witch the hanger is mounted in a lower angle... A good example is the Bear Grizzly 840.
bmxbmx94 1 year ago
i could take that exact board with the trucks just as tight, or loose, without getting wobble. you just cant simulate a real rider
EnjoiEmerica11 1 year ago
@EnjoiEmerica11 The geometry of a specific riding stance is being simulated. This test demonstrates that a rider/vehicle model will exhibit speed wobble at certain speeds. This proves that speed wobble is not strictly a human induced phenomenon. A goal of this study is to scientifically analyse speed wobble in skateboards so as to quantitatively rate skateboard designs. These are the initial results at creating a test fixture for that study
viewpntr 1 year ago
try this with some bear grizzly's, i bet it at least get to 25. and 30 slightly tightened
JesusLongboards 1 year ago
I dunno hey, I understand what you are trying to do, but skateboarding in any from is about the skill, would this not strip it of what is about? also I dunno if a board thats easy to get to high speeds without wobbles is safe, imagine an inexperianceed person going 50mph down a hill. just because the wobbles are out of the way, dosnt mean there are other problems they will not encounter. personnaly I feel the speed wobble tests the skill of the rider before they end up going too fast.
aracabushcabar 1 year ago
@aracabushcabar - Your personal feeling that speed wobble tends to act as a speed limiting skill test is interesting. If a full disclosure of the nature of wobble was revealed in that light it would certainly promote the use of safety gear! Families devastated by deaths from speed wobble would argue against it. As in - "The death of Robert Harris." Also, Google "Carl Stillman Olson" and read of another new skater dieing from wobble in Boulder, CO. Wobble is not a safety feature.
Looknround0568 1 year ago
@Looknround0568 I am not arguing the fact that a wobble can kill you, but elliminating the wobble will only leave 1000000 other unsolved deadly possibilities. thing is for an experianced rider the speed wobble is probably the smallest of problems which could lead to injury or death. thing is if you are going to be riding a skateboard of any nature. death is a possibility.
aracabushcabar 1 year ago
@Looknround0568 why r u trying to test this? if ur good then ur alive. it's a sport and u don't need to make some sort of handicaps so that everyone would be equal. only the best get to enjoy the victory and no speed wobbles. deal with it.
marty1091 1 year ago
@marty1091 To my way of thinking, speed wobble is like the "bends" in scuba diving. If you understand it then you can avoid it - and that should be important to anyone using a longboard!
Looknround0568 1 year ago
@Looknround0568 u can't understand speed wobbles. they just happen. the better u r u just learn to control them. they're freaks and u deal with them by getting better with time, not by wasting that time to put together some useless rack that will tell u nothing.
marty1091 1 year ago
man, im really sorry, but you teory, is shit to me, and to any respectable speedboarder, skateboards, wasn't made to study, they were made to perform, you cant recreate nothing like a man riding his skate, it depends on a lot of factors, i've reached the mark of 63mph, with no wobbles...that's all about a good rider, a good truck, and a good position.
gabirobaa10 1 year ago
@gabirobaa10 - OK, let me ask for your advice, as a "respectable speedboarder" is there any unsafe speed for the Sector 9 trucks and Cruiser style board shown in this test? Could a "good rider" in a "good position" expect to avoid speed wobble on this board all the way up to 63 mph?
Looknround0568 1 year ago
@Looknround0568
there are lot of factors to consider in the aspect of speed boarding. wobbles come from a lack of balance, strength, and mindset. speed wobbles are 70% mental, 20% skill, and 10% outside factors that we cannot control. The reason your rig got wobbles is because of many reasons. for example, the stance. a rigid stance (wooden legs, cough cough) is going to cause speed wobbles ever time. only a real rider can prevent wobbles because the leg muscles absorb them and keep balance.
1993TJB 1 year ago
@1993TJB - High speed longboarders should realize that an incomplete understanding of speed wobble could kill them. Speed wobble is not a mental problem.
Looknround0568 1 year ago
@Looknround0568 I think no-one understands a speed wobble better than the rider. anything can get a speed wobble, motorcycles, cars etc... I dont ythink you should be looking to "improve the understanding" as its pretty obvious its a play of basic physics. however focusing that side on the actual construction of trucks and spacing, may be a way to elliminate the need for "feeling the board" and make it more about numbers.
aracabushcabar 1 year ago
a speed wobble is a balancing force that works to balance the longboard by itself that's why when you get speed wobbles your told to have your ankles loose its when you try and balance the speed wobble by yourself is when you get into trouble because you will lock your ankles. And longboarding is a sport and with any sport you always have a risk of injury.
luckymom455 1 year ago
on another note your gear does matter. for example, the bushings. different shaped bushings perform differently. and your trucks are also made to perform for a certain style of riding. speed wobble cannot be prevented 100% of the time all the time. speed wobbles are mostly mental. the only way to learn (study in your case) how to prevent speed wobbles it to stop being a pussy and actual ride the board. if you dont practice you cant get better. if you dont get better you cant prevent wobbles.
1993TJB 1 year ago
loved it. Great experiment. Thanks for taking the time and effort=) I have been skating for over 10 years now and this was very entertaining to watch =)
Iewkas 1 year ago
You are welcome.
Someday I'll produce a video of a rider recovering from the onset of speed wobble . . .
Perhaps by leaning back to initiate wobble and then leaning forward to dampen the motion . . .
Looknround0568 1 year ago
we allready know how to make truck designs that wont wobble deppending on the king pin angle...
this reaserch has already been done...
a lot more simply...
cH1L1D 2 years ago
im sorry but you are a fucking idiot.
DontDoDrugsSmokeHERB 2 years ago
this is sooo lame.
branytango 2 years ago
what were you trying to find?
jbrandona119 2 years ago
thanks for asking - this test demonstrates that a rider/vehicle model will exhibit speed wobble at certain speeds. This proves that speed wobble is not strictly a human induced phenomenon. A goal of this study is to scientifically analyse speed wobble in skateboards so as to quantitatively rate skateboard designs. These are the initial results at creating a test fixture for that study.
Looknround0568 2 years ago
i have that board.
ndux6 2 years ago
Hahahah your such a no life
Marcus4prez 2 years ago
As many people have said here, parts are a big factor. Especially without a human manning the skateboard, things like bushings, washers, bearings, wheels, trucks are all factors. Example:Subsonic DH boards are typically concave and are low riding, making is less prone to speed wobble. These physics can be applied similarly to cars.
Chrismonchan 2 years ago
Yes, the parts and design are major factors. The geometry of the rider/board/trucks determine when the vibration starts. Skateboards have more in common with motorcycles and bicycles than cars. Skateboards are "two-point suspension vehicles."
Looknround0568 2 years ago
This has been flagged as spam show
this is totally dumb and pointless. speed wobbles occur from being unbalanced on your board. Balance comes with experience. To accurately test how fast you need to go to experience speed wobbles, you would have to rig a rider on a treadmill and slowly increase the speed. Then you can test ways to cancel out speed wobbles. Congratulations, you just wasted all that time, equipment, and money inaccurately testing a hypothesis.
antebanan 2 years ago
Parts aren't a very big factor compared to rider experience. I can take my S9 Race with loose-ass Bear 852's to a much faster speed than my friend can with the same board, much harder bushings and flipped hangars.
FortunexenutroF 2 years ago
@Looknround
Yes! Actually you're right! They are more like bikes than cars! I stand corrected.
@Fortune
Yes, as Looknround said in an earlier post, experienced riders are able to resist wobble. In terms of bombing hills, I think confidence plays the biggest roll. For example, when I bomb hills I put a lot of force on the upper deck and lean when needed (allowing for speeds around 30-40mph). A noob would probably apply pressure incorrectly and/or lose balance and eat it.
Chrismonchan 2 years ago
man, thats ghetto!
michaelb1104 2 years ago
Man, That is scary sh-t.
Supersyko250 2 years ago
you need to use reverse kingpin trucks those trucks were never made to go fast you should try testing a rayne avenger or hellcat or a EARTHWING mystery model from my experience with DH those have all been my race setups at 1 time or another and with bear smokies or randal comp trucks they are very stable at 50mph+
earthwingnewsletter 2 years ago
What was the purpose of this?
Looks like a waste of gasoline.
"Loose trucks saves lives."
Less time thinking, more time skating.
jts051686 2 years ago
u should start by not using a gash board like sector 9 and put the weight where longboarders would actually place their feet, ie front foot on the front truck and back foot near center most weight on the front foot. but it gives a good idea and demonstrates what speed wobble looks like.
Hhmmmmmmmmmm 2 years ago
okay... now try this with a downhill longboard... this is more of a cruiser longboard. Also a more experienced rider can resist speed wobbles even at high speeds like 60mph
iwilleatbabies 2 years ago
You are right about longboard design being important in determining when speed wobble will happen. Rather than say experienced riders "resist" speed wobble I would say they actually "avoid" speed wobble ever happening to them. Proper stance and board design are significant factors in preventing speed wobble from ever getting started.
Looknround0568 2 years ago
Been proven that***
besisay 2 years ago
U need somthing that will repesent human ankles where it can handle those turns. And it has Benny provenbtgat looser trucks wobble less then tight trucks
besisay 2 years ago
now you should do the same thing but with a downhill longboard
CocaCooler 2 years ago
Good idea. I'm thinking of using the Landyacht and Original Skateboard brands and designs next.
Looknround0568 2 years ago
use the evo or drop speed, original isn't the best out there btw idk why everyone thinks that
iwilleatbabies 2 years ago
use a rayne or a comet or somthing. originals are not good for speed. atleast their trucks arent.. however that is all hear say. good luck.
dkfan4lyfe 2 years ago
very well done and great vidio,, peace 2 ya
bassclef41 2 years ago
The best test starts at 5:00 - pretty good illustration
viewpntr 2 years ago
you are a fucking genius
blakex29501 2 years ago
lol cool, i wonder if companies do this...
onionbuskut 2 years ago
i actually think this is pretty cool and its something that can be usefull. At least he finds a way to occupate himself not like somebody that posted a comments 3weeks before me
iphones4ever 2 years ago
dude you need a life and something to do
WhereIsNumNum 2 years ago
This effort seems very worthwhile to me. Riders are being injured by this phenomenon. If speed wobble can be minimized by better designs then injuries can be prevented from ever happening. How cool is that?
Looknround0568 2 years ago
ya its called tucking and getting a rayne board or anyother drop down board. and a phenomenon?!?! more like some retard going down a hill he nows he cant
WhereIsNumNum 2 years ago
why are u baggin on this guy? he is trying to help make the longboarding better...
gotrice415510 2 years ago 8
dude, why?
FreebordRoofy 2 years ago
thanks for asking - this test demonstrates that a rider/vehicle model will exhibit speed wobble at certain speeds. This proves that speed wobble is not strictly a human induced phenomenon. A goal of this study is to scientifically analyse speed wobble in skateboards so as to quantitatively rate skateboard designs. These are the initial results at creating a test fixture for that study.
Looknround0568 2 years ago
but you built the rider/vehicle model so it would behave as a human, thus making it possible to get vobbles...
I am a testpilot for a company that sells boards, why not do it like that ?
FreebordRoofy 2 years ago
The intent of this set up is to eventually compare design variables. Variables such as truck design, wheel base length, board stiffness, kingpin nut tortion, etc. We will tighten the kingpin nut and monitor the new speed at which wobble occures for example. Removing the human as a variable will allow for better comparisons.
Looknround0568 2 years ago
All that knowledge has already been found... you can never get exact variables anyway. Tight truck = more stable. Long wheelbase = more stable. Skatetrucks stable, randal design less stable, sidewinders turn like hell.
why not test it on a human since it's made for a human?
FreebordRoofy 2 years ago
huauhauhauhauhauhauhauhuahauhauhauhauha
hauhauhauhauhaauhauhauhaauhauhauhaauhah
huauhauhauahuhuha !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
eduardofuruga 2 years ago
how do you get wobbles at fifteen
iridepc44 2 years ago
You cant get speed wobble with tight trucks like that you tard
dynastar131 2 years ago
Good idea. I'll try that.
Looknround0568 2 years ago
Downhill longboarders usually distribute most of their weight towards the front of the board for stability at high speeds. It might be interesting if you could try to simulate this with your test rig and see how much difference it actually makes.
Also, I hope you rewarded your driver with lots of chocolate.
AndyJGee 2 years ago 7
IS THIS A JOKE?????????
bigwillisawesome 2 years ago
You need a new hobby man.
Sidestept 2 years ago
this has to be the biggest waste of time and money i have seen in awhile sure you take out the "human element" but why would you want to humans are going to be riding it and anyone can balance better than some weight and a blue pole.....most pointless "scientific testing" ever
FAIL
caboose123456789 2 years ago
OK - OK - OK, I agree, if testing stops with this video then "yes," that would be a waste of initial effort. There needs to be more done - I'm slow. In the mean time the video does show speed wobble without a human's input - that ought to be interesting to riders & makers & sellers.
Looknround0568 2 years ago
wow man MY APOLOGIES i really am sorry....i musta been in a real bad mood or somethin last night never meant to come off harsh ....really its cool that at least someone is researching this stuff...all that said i think sime kind of testing with skilled riders will still be more benficial
much love
caboose123456789 2 years ago
Its all about rider skill, stance and experience.
davidval88 3 years ago
what the hell is you problem, but i kind of agree
JJJJake124 3 years ago
or or you could just ride it get pulled with a rope and go for it
native145 3 years ago
In my mind, i think its all in the head about the wabbles, because, when i first rode i got wabbles all the time, on any hill, now i know to just keep my legs as stiff and stright and i can bomb any hill, and yes also about the trucks being tightened...i have my tool always with me to tighten my trucks, because, even if your pro and you got bad loose trucks, your gonna get the wabbles...
JayRad1479 3 years ago
well wobbles could also depend on a person's skill
and professional bombers dont get much wobbles cause they know what to do
and a new longboard would probably get some wobbles if they bomb a hill for the first time
i am a longboarder my self
i been going faster than 15 mph without speed wobbles
but its not only the rider that can get u speed wobbles
its also the board
stiffer boards are more stable in high speeds
and flexable ones are less stable and cause wobbles
NikkoThePinoi 3 years ago
i dont long board but i do use street skateboards and when i bomb a fat hill i get speed wobles at like 25 30 but the way to couteract the woble is to stand up streight and center your weight and once the wobble has stopped you can skate the rest of the hill without getting speed wobles
dillcat09 3 years ago