'Combusted with either a glow plug or a spark plug?' Glow plugs do not ignite the fuel, they simply pre-heat the engine, and in no way are they part of the combustion process. I guess they don't cover diesel engines at his school.
@darthvincor He is talking about glow engines in model cars and airplanes. he even mentioned them and showed a picture of a model car. The glow plug in a model engine has platinum and heats red hot and combusts the fuel and also has a chemical reaction with the fuel to aid combustion.
A 4 stroke has less torque than a 2 stroke of the same displacement. The only reason why people say 4 strokes have more torque is because they are comparing engines of different displacement e.g. (250cc 2 stroke vs 500cc 4 stroke)
two stokes dont have too burn oil. there where two stokes that had an oil bath like a 4 stroke but ran straight gas. There are also a lot of 4 strokes still being made today that have no oil bath design but burn oil (mixed gas)
@wadie626 faster in what sense 2strokes are snapier of start reach there high end faster whereas a 4 has more power and a higher top end just takes longer to get there
@asus3571 What 4 stroke are you referring to that has more power than the same displacement 2 stroke? There's a reason for affirmative action for 4 strokes in racing. They make less power per CC.
@asus3571 First off, you're confusing HP and Torque. Second, you are seriously incorrect that a 4 stroke will make more torque than a 2 stroke of equal displacement. It's one of the reasons it's legal in the AMA to race a 250-4 stroke against a 125-2 stroke and a 450-4 stroke against a 250-2 stroke. I suggest you pull up some charts of say, 250cc bikes of each flavor and look at the HP/Torque curves before making such statements. Go ahead, name one 250-4 that makes more HP/Torque than a 250-2.
@Destronus the way i see it, the problem is that the turbo charger will always be pushing air into the engine, when the cylinder goes down, air would spool back into the turbo, shit its 12 am here its too late for this lol
Yeah two stoke engines are mostly used in rc cars and chainsaw, small shit... what about Sleds, Outboard engines, dirt bikes/ motorcycles ... ? And two cycles engines of course never uses oil injection...
Yeah two stoke engines are mostly used in rc cars and chainsaw, small shit... what about Sleds, Outboard engines, dirt bikes/ motorcycles ... ? And two cycles engines of course never uses oil injection...
@redlinerumble3 na more like peice of crap. two strokes sound like pro biker. haha you must watch the stuck up pussy riders of 2004 and up hahah. watch 2003 and lower. much more exciting to watch
Damn. People are arguing over 2 vs. 4 stroke? I’ll bet I could make a video of two dogs pissing on a flat rock and a round rock and people would argue over which it wetter.
4 stroke is much better if you want durability...2 stroke will get stuck when you dont use enough oil, with 4 stroke engines you only need to fill up the litle cube underneath the engine , 2 stroke uses alot of oil when its get mixed with the petrol...and 4 stroke has got alot more power at the end...
@uatam552 Bike or car? Some older 2 strokes have the oil separate and adds oil when needed (they mix the needed amount of oil in), as apposed to mixing the gas and oil in the gas tank. I'm not sure why this isnt done anymore but if whatever you're driving is old that's prob why you have an oil reserve.
Which is more efficient? Two stroke or rotary (wankel)? (I know 4 stroke usually beats 2 stroke and rotary except in the worlds largest 2 stroke for container ships)
dude its called two stroke and not two cycle... In mech-engine' a stroke is half of a cycle...That is to say that you should be calling a two stroke engine one cycle, while four stroke is two cycle... thats if you insist on using the 'cycle' term
@dbzatinder yes you are somewhat correct but it doesn't really go by piston movement it goes by step 1 the camshaft opens the intake step 2 the piston compresses the gasoline step 3 the spark plug ignites and step 4 the other cam opens the exhaust vavle you had the basic part correct and don't take this as me being an ass i'm just trying to clarify and help
@cammymcghee yes, but you have to understand that a 2 stroke 125cc is comparable to a 4 stroke 250cc, as far as available torque is concerned, but the 4 stroke engine will have more full range power. Thats why MotoGP switched from the 500cc 2 stroke to the 1000cc 4 stroke. The 500s were sick and more violent, but the 1000s were faster, and have gotten so fast that they limited size to 800cc 4 strokes now. Something to think about, 2 Stroke more fun though, and crazy violent power!
4-stroks are better because there power band is spread out. but on 2-strokes the power band is short but more noticible with 2 strokes thats all you have.
@welikethetoon I'm a 4 stroke fan myself, sure they don't take in as much fuel in the same period and so produce less power for their size, but I do prefer the wider torque and power band of 4 strokes, combined with their increased efficiency, (usually) easier on the ears tone, and more rhythmical idle.
the engine on my lawnmower shit the bed so replaced it with a chain saw engine which is a 2 stroke. it works fine obviously, but since its 2 stroke it smokes alot and smells bad.
how does the vacuum form in the begining of the first cycle? The guys said the piston just drops down and forms a vacuum above the piston but what causes the piston to drop down in the first place?
im asking what causes the first cycle to occur? like how does the piston magically just move down and how does this vacuum above it just magically appear?
the piston moving down creates pressure in the fuel air plus the piston moving down also creates a vacuum and what keeps it going is the flywheel (a big chuck of metal) which carries the piston through the cycles
@salzahrah The engine is initially spun with a starter motor or string etc. The engine is kept moving by a flywheel. The explosions of the piston accelerate the flywheel which then has enough momentum to power the exhaust, subsequent intake and compression stroke. Without a flywheel the engine would most likely stop before the next compression stroke if it was under load.
thats how everything starts the reed passes the gas mix and then the piston compresses the mix and then it ignites but wat u are wondering how the vacuum forms? the piston drops alowing the reeds to send in the gas miix...compression
@rm100racer7 No a 4t and 2t are reletively the same speed< you have to take account for sprockets and chains to. A 4t has a compression stroke, obviously giving the engine alot of torque. A 2t has more power in its power band, making them good for race starts and long sweeper turns, I personally like a 4t for more power in short turns and straights, although the 2t produces more power it is only feisable for specific things.
Well that was a bad pic of a 2 stroke engine since the fuel should never be injected while the engine is still opening for the exhause to be realesed.
cos 4 strokes have half the amount of power strokes but their more efficient because they compress the fuel then ignite it so theres less unburnt fuel if you get what i mean
it's good to let idle- just because it coats all your top end with oil. It also heats up the cylinder and carb manifold so the gas atomizes better resulting in a smoother ride. If its really cold outside (below freezing) it may prevent your cylinder/piston from cracking; but thats only if you immediately dump alot of fuel into the cylinder. It also is good to idle before you turn engine off so it cools cylinder. However on a 2 stroke, if the jetting is too rich, idling may foul your plug.
When its cold my bike wont start even with the choke on. So i rev it up to 1500 for a few seconds, which is idle speed anyway, so that it can idle on itself
idk why ppl think that glow plugs act like spark plugs in diesels the glow plugs just warm the diesel fuel this guy is retarded deisel fuel is ignited by compression alone
i own a banshee which is a 2 stroke and i raced my friend who has a new raptor 700 which would be a 4 stroke and he got me off the line everytime but as soon as i hit 4-6 gear he ate my dust....in otherwords 2 stroke all top end 4 stroke all low end tourqe...banshees for sale by the way lots of extras
a 2stroke engine is shit whitout a good exhaust , thy always talk about the diffrence and shit, but u could start a 4T engine whit out exhaust and not breaking it , but if u would do that whit a 2T it would fuck up the piston so bad it jams and you could trow away cylinder an piston . I know it because i tested it : )
hmm@ the 2stoke, isnt there a lot of fuel going trough the exhaust once the piston starts compressing the air-fuel mixture, because the exhaust is still open??
yea, but the tuned pipe does the job. a back flow is created in the exhaust pipe by bouncing pressure wave. when the piston starts it's compression, the pression push the gas back in the cylinder for higher compression. Hope you get it :P !
but the valve that opens the "compressor" isnt closed yet, so it can flow back, but yes, there is a bit unused fuel that comes out of the exhoust
if you would take a real one, the exhoust is longer open than the fuel intake, but at this one, it isnt off enough to let it not use fuel, becuz the fuel and gasses wont flow fast enough...
4 stroke is just to complicated and they cost way to much to repair so i think that they should just find a way to make 2 strokes more eco friendly and then start puttin them back in dirtbikes because i like the lightness and the power of 2 strokes and 4 strokes are justt 2 heavy and costly
are you stupid the 4 stroke engine is twice as heave because its got twice as many moving parts. and another thing, 4 stroke engines dont make shit in hp but they make more torque
ummmm no. have u ever heard of a little thing called POWERBAND. at medium rpm's a 4t produces way more power which is why they pull outta turns so well. but at high power a 2t hits the powerband so it pulls harder than a 2 stroke.
2t=short powerband but twice the power.
4t=long powerband but hallf the power.
so back to my original point. a 2t cant keep up with a 4t until it hits its powerband. making the 4t the optimal race bike. but the 2t the optimal drag/fmx bike.
your fucking retarded you got it mixed around. 4 stroke engines have more parts making it heaver and 2 strokes only have TWO STROKES making it have more time to do more cycles you idiot.
It is heavier, sure, but my 4 stroke doesnt need rebuilt every now and then and def has more power than any 2 stroke ive ever rode except for that cr 500, but thats just epic.
but the most you do to refrest a 2 stroke is replace the piston rings and reeds. more extensive would get a piston as well, and maybe a cylinder going over. in a 4 stroke you have to check and adjust the valves (more intensive work), and if you have to replace rings, a piston, or do cylinder work you have to remove the head and cams. but 4 strokes dont have "more" power, just broader, smoother power deliveries. if they kept R&Ding 2's, they would have just as much power as the 4's today.
four strokes and two strokes have almost the same power... wit different torques
and btw two stroke engines were only used because were very light thus giving a better power to weight ratio. example a crf 450 is slightly slower than a cr500 . they have they same weight (120 kilos dry) but they have almost the same power
'Combusted with either a glow plug or a spark plug?' Glow plugs do not ignite the fuel, they simply pre-heat the engine, and in no way are they part of the combustion process. I guess they don't cover diesel engines at his school.
darthvincor 2 months ago 4
@darthvincor
Maybe he's just a fuckin dumbass.
mactavishc 3 weeks ago
@darthvincor He is talking about glow engines in model cars and airplanes. he even mentioned them and showed a picture of a model car. The glow plug in a model engine has platinum and heats red hot and combusts the fuel and also has a chemical reaction with the fuel to aid combustion.
chris1451 2 weeks ago
Due to the Fact they Dont need an oil reserve tank , FOOL
3RWE3 3 months ago
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@3RWE3
He said they don't have an oil reservoir not "Due to the Fact they Dont need an oil reserve tank"
FOOL
BIGGESTxxEMINEMxxFAN 1 week ago
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A 4 stroke has less torque than a 2 stroke of the same displacement. The only reason why people say 4 strokes have more torque is because they are comparing engines of different displacement e.g. (250cc 2 stroke vs 500cc 4 stroke)
jalit 3 months ago
this gave me a brain fart
LhotseMuol 5 months ago
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YEAH WELL I DON'T REALLY GIVE A SHIT!!!!!!!!
SuperStagg1 6 months ago
2 stroke rulz!
marschello1 6 months ago
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two stokes dont have too burn oil. there where two stokes that had an oil bath like a 4 stroke but ran straight gas. There are also a lot of 4 strokes still being made today that have no oil bath design but burn oil (mixed gas)
SavagedWigs 7 months ago
2 stokes aare faster then 4 strokes
wadie626 8 months ago
@wadie626 definately not true :D
ElectroNerd93 7 months ago
@ElectroNerd93 yeah they are brah :DD just like 2 say why are 250 2 strokes faster then 250 4 strokes same size engine :)
wadie626 7 months ago
@wadie626 faster in what sense 2strokes are snapier of start reach there high end faster whereas a 4 has more power and a higher top end just takes longer to get there
asus3571 7 months ago
@asus3571 very true, i like my 2 strokes :D
wadie626 6 months ago
@asus3571 What 4 stroke are you referring to that has more power than the same displacement 2 stroke? There's a reason for affirmative action for 4 strokes in racing. They make less power per CC.
tonypybus 6 months ago
@tonypybus well i get that cuz its fact 4 strockes have more torque better for climing witch takes more power
asus3571 6 months ago
@asus3571 First off, you're confusing HP and Torque. Second, you are seriously incorrect that a 4 stroke will make more torque than a 2 stroke of equal displacement. It's one of the reasons it's legal in the AMA to race a 250-4 stroke against a 125-2 stroke and a 450-4 stroke against a 250-2 stroke. I suggest you pull up some charts of say, 250cc bikes of each flavor and look at the HP/Torque curves before making such statements. Go ahead, name one 250-4 that makes more HP/Torque than a 250-2.
tonypybus 6 months ago
@tonypybus Ahhhh hell, let me do it for you. I chose Yamaha because they make both a 250-2&4
A 250-2 averages 46HP and 30.6ft/lbs of torque.
A 250-4 averages 36HP and 20.1ft/lbs of torque
tonypybus 6 months ago
that dumb ass forgot about motorcycles and snowmobiles some of the best are 2-stroke
soloh21 8 months ago
just make a 3 stroke.
scooterdane 9 months ago 19
@scooterdane
u cant cause u it is not possible to make 1 and a half cylinder valves
didakeepa 2 months ago 2
i hate it when people say 2 cycle. it's two stroke, as in 2 strokes of the piston for every four cycles, twit...
demonofrazgriz333 9 months ago
@demonofrazgriz333 no get nuts 2 CYCLE .. cycle is just a more put out word for stroke
daswamps808 8 months ago
He was masturbating at 0:05 to 0:12
omgweed1 10 months ago 2
This is very good .. i understood everything from the first view :)
ILOVEAVATAR619 10 months ago
4 stroke good, 2 stroke bad. That's all I need to know.
dkw12002 11 months ago
What happens, and what does it mean, if the out take combustion chamber doesn't open to release those burnt gasses?
darktreason 11 months ago
I think a 4 cycle engine would be better for turbos, since 2 cycles have its intake and exhaust opened at the same time.
Destronus 11 months ago 2
@Destronus the way i see it, the problem is that the turbo charger will always be pushing air into the engine, when the cylinder goes down, air would spool back into the turbo, shit its 12 am here its too late for this lol
angrygunsmith 10 months ago
Yeah two stoke engines are mostly used in rc cars and chainsaw, small shit... what about Sleds, Outboard engines, dirt bikes/ motorcycles ... ? And two cycles engines of course never uses oil injection...
everything else is ok
iamadness69 1 year ago
Yeah two stoke engines are mostly used in rc cars and chainsaw, small shit... what about Sleds, Outboard engines, dirt bikes/ motorcycles ... ? And two cycles engines of course never uses oil injection...
iamadness69 1 year ago
Yeah two stoke engines are mostly used in rc cars and chainsaw, small shit... what about Sleds, Outboard engines, dirt bikes/ motorcycles ... ?
iamadness69 1 year ago
piston in my as i like piston in the as
knarkrider 1 year ago
to the exhaust manifold and then out the tail pipe
miselramos83 1 year ago
where does the exaust gases go after that?
ehalligan12 1 year ago
Thank you for your video.
whatjamaican 1 year ago
so what makes the 2 strokes more powerful than a 4? LOL i dont understand shit.
IyliaFahmi 1 year ago
@IyliaFahmi 2 less cycles
futureunknown 1 year ago
who watched this for dirtbikes?
ReidHarris7 1 year ago 23
4 stroke motocross bikes all the way man
wale2469 1 year ago
@wale2469 yeah,,and the 4 stroke sound like a Pro biker :)
redlinerumble3 1 year ago
@redlinerumble3 na more like peice of crap. two strokes sound like pro biker. haha you must watch the stuck up pussy riders of 2004 and up hahah. watch 2003 and lower. much more exciting to watch
worldskater31 1 year ago
i own a yamaha Z and a stihl chainsaw ...lol
kryptikkk777 1 year ago
Damn. People are arguing over 2 vs. 4 stroke? I’ll bet I could make a video of two dogs pissing on a flat rock and a round rock and people would argue over which it wetter.
Warblade118 1 year ago
@Warblade118 The round rock would be more wet =)
akumaart 1 year ago
@akumaart What are you crazy? The flat one would be wetter! lol
Warblade118 1 year ago
@Warblade118 OMFG THIS COMMENT WAS LIKE THE FUNNIEST THING I EVER HEARD XD
YzFredQc85 1 year ago
@YzFredQc85 I’m glad you thought it was funny. I was just trying to illustrate a point and maybe have a little fun too.
Warblade118 1 year ago
4 stroke is much better if you want durability...2 stroke will get stuck when you dont use enough oil, with 4 stroke engines you only need to fill up the litle cube underneath the engine , 2 stroke uses alot of oil when its get mixed with the petrol...and 4 stroke has got alot more power at the end...
emplyn 1 year ago
@emplyn thats why all the top riders out there ride four strokes, right?
bizzatch926 1 year ago
@bizzatch926 yeah and the ama made rules to give 4 strokes an advantage over 2 strokes
TheXtremesports123 1 year ago
@TheXtremesports123 and why do u think that is?
bizzatch926 1 year ago
@bizzatch926 bc thimk about it 125cc or 250cc which would you race?
TheXtremesports123 1 year ago
@TheXtremesports123 the 125 because its a 2 stroke. plus 250? doesnt matter displacement. my ktm 125= 38.6 hp and new 2011 yz250f=34.5.
worldskater31 1 year ago
@bizzatch926 not always.
ShawtyDaDrPepper 1 year ago
@emplyn
No, 4-stroke don't have more power.
The 2-stroke engine is lighter and more powerfull than 4-stroke ;)
And yes the 2-stroke is less durable than a 4-stroke, BUT, it's much cheaper and less complicated to repair a 2-stroke engine :)
ShetaTruse 1 year ago 3
@monkeyBoner773 110 procent true!!!
hadjardiablo 1 year ago
"your standard internal combustion engine in your vehicle." not every one has Ferrari's haha
10olivert 1 year ago
i drive two stroke and there is a oil reserve?
uatam552 1 year ago
@uatam552 Bike or car? Some older 2 strokes have the oil separate and adds oil when needed (they mix the needed amount of oil in), as apposed to mixing the gas and oil in the gas tank. I'm not sure why this isnt done anymore but if whatever you're driving is old that's prob why you have an oil reserve.
KillerWalrus2845 1 year ago
@KillerWalrus2845 i'm uatam..i talk about sled..mine is 2005
NextSLDNX 1 year ago
@KillerWalrus2845 because thats one more thing that could go wrong.
worldskater31 1 year ago
does a 2 storke have an exhause valve my mechanic swears my piston got cought on it and it broke the piston is there a valve in there
hy731 1 year ago
@hy731 yes of course
TheHondaAbuser 1 year ago
@hy731 they have a power valve
07scoobywrx 1 year ago
2 stroke animation is soooooo wrong !
thapilot06 1 year ago
pull shit! ull find 2 stroke in cars! fuckin dumb ass right there
23spartanguy 1 year ago
2-stroke dirt bikes...not just little engines like rc cars num nuts
tatextreme 1 year ago
Two stroke is faster but fout stroke is a lot economical in fuel usage.
HeliLuuk 1 year ago
2 strokes all day!
JustRide626 1 year ago
all i know is that they both move lol
anyconsolegamer 1 year ago
@monkeyBoner773 ha he told your asses
drewwaterz1686 1 year ago
Which is more efficient? Two stroke or rotary (wankel)? (I know 4 stroke usually beats 2 stroke and rotary except in the worlds largest 2 stroke for container ships)
TimpBizkit 1 year ago
that animation is so crude and confusing, the exhaust port is always higher than the transfer/intake port
C0LL1N 1 year ago 39
@C0LL1N
Dude, it is because it is Incejtion ;)
playingfor4 1 year ago
@C0LL1N No, that depends on a model.
Zuconja 5 months ago
dude its called two stroke and not two cycle... In mech-engine' a stroke is half of a cycle...That is to say that you should be calling a two stroke engine one cycle, while four stroke is two cycle... thats if you insist on using the 'cycle' term
trippleciz 1 year ago 2
Why is it called "two" strokes? :)
steyr177 1 year ago
@steyr177 because the piston cycles twice before it 'explodes'. 4 strokes cycle 4 times before 'exploding' :)
MrDjDiversity 1 year ago
okay! THX! :D
steyr177 1 year ago
thats not true dude stop talking shit
SgtBaker0707 1 year ago
how come its not called a 3 stroke engine because it does 3 things intake, compress and exhaust thats 3 things so why is it called a 2 stroke?
lowlife1441 1 year ago
@lowlife1441 never mind i understand now there are two strokes of the piston one is intake and exhaust and the other compression and combusion
lowlife1441 1 year ago
@steyr177 , piston slides up once and down once, aka 2 strokes
4 strokes = piston goes up twice, down twice, = 4 strokes
dbzatinder 1 year ago
@dbzatinder yes you are somewhat correct but it doesn't really go by piston movement it goes by step 1 the camshaft opens the intake step 2 the piston compresses the gasoline step 3 the spark plug ignites and step 4 the other cam opens the exhaust vavle you had the basic part correct and don't take this as me being an ass i'm just trying to clarify and help
tehshadow23 1 year ago
@tehshadow23 No you are so wrong.
Mentorcase 1 year ago
2 stroke means it has 2 diferent actions
1st time/ action you have explosion and expansion of gases and intake of new gases on the chamber
2nd compression of new gases and intake of new gases to crankshaft
2 stroke engines is "faster" than 4 strokes because it takes only 2 actions to make an explosion! when 4 stroke engines need 4 steps:
1intake
2compression
3explosion
4exhaust
I hope you understand :)
varkow 1 year ago
Thank you for clearify it for me! :D
steyr177 1 year ago
2 stroke for life my 125cc 2 stroke bike will fukin kill eany of the modern 125cc with there shity 4 strok engines
cammymcghee 2 years ago
@cammymcghee yes, but you have to understand that a 2 stroke 125cc is comparable to a 4 stroke 250cc, as far as available torque is concerned, but the 4 stroke engine will have more full range power. Thats why MotoGP switched from the 500cc 2 stroke to the 1000cc 4 stroke. The 500s were sick and more violent, but the 1000s were faster, and have gotten so fast that they limited size to 800cc 4 strokes now. Something to think about, 2 Stroke more fun though, and crazy violent power!
strangemarley 2 years ago
u got a point m8 a do like 4 stroke but i dont like them in eanything under 250cc they just aint gt enough power u know wot i mean
cammymcghee 2 years ago
the 2 strokes are alot faster but wear out quicker to as they rev much higher
sandydogy 2 years ago
SO true man
PCexpert120 1 year ago
Comment removed
hitokiridx6993 2 years ago
4-stroks are better because there power band is spread out. but on 2-strokes the power band is short but more noticible with 2 strokes thats all you have.
4 STROKES ROCK !!!!!!!!!
welikethetoon 2 years ago
2 strock fukin rules
cammymcghee 2 years ago
@welikethetoon I'm a 4 stroke fan myself, sure they don't take in as much fuel in the same period and so produce less power for their size, but I do prefer the wider torque and power band of 4 strokes, combined with their increased efficiency, (usually) easier on the ears tone, and more rhythmical idle.
TimpBizkit 1 year ago
@TimpBizkit powerband of 4 strokes???????? Can't even feel it.
JustRide626 1 year ago
the engine on my lawnmower shit the bed so replaced it with a chain saw engine which is a 2 stroke. it works fine obviously, but since its 2 stroke it smokes alot and smells bad.
JTyler52 2 years ago
bad
Lex5151 2 years ago
he talks way too fast
salzahrah 2 years ago
i dont understand
getrcgepc 2 years ago 3
2strokes are best for motocross and everything else
rm100racer7 2 years ago 2
how does the vacuum form in the begining of the first cycle? The guys said the piston just drops down and forms a vacuum above the piston but what causes the piston to drop down in the first place?
salzahrah 2 years ago
the spark from the spark plug ignites the gas mix and the force from that sends the piston back to the bottom of the cycle
rm100racer7 2 years ago
@rm100racer7
thats after the first cycle...
im asking what causes the first cycle to occur? like how does the piston magically just move down and how does this vacuum above it just magically appear?
salzahrah 2 years ago
the piston moving down creates pressure in the fuel air plus the piston moving down also creates a vacuum and what keeps it going is the flywheel (a big chuck of metal) which carries the piston through the cycles
mikemike390 2 years ago
@salzahrah A starter makes the engine turn for the first stroke and then aftter that the engine runs on it's own!
roboman79 2 years ago
@salzahrah The engine is initially spun with a starter motor or string etc. The engine is kept moving by a flywheel. The explosions of the piston accelerate the flywheel which then has enough momentum to power the exhaust, subsequent intake and compression stroke. Without a flywheel the engine would most likely stop before the next compression stroke if it was under load.
TimpBizkit 1 year ago
thats how everything starts the reed passes the gas mix and then the piston compresses the mix and then it ignites but wat u are wondering how the vacuum forms? the piston drops alowing the reeds to send in the gas miix...compression
rm100racer7 2 years ago
@salzahrah kick started, electrically, or pull like on lawnmowers
MonkeyManFsU 2 years ago
@rm100racer7 No a 4t and 2t are reletively the same speed< you have to take account for sprockets and chains to. A 4t has a compression stroke, obviously giving the engine alot of torque. A 2t has more power in its power band, making them good for race starts and long sweeper turns, I personally like a 4t for more power in short turns and straights, although the 2t produces more power it is only feisable for specific things.
MonkeyManFsU 2 years ago
i partially agree with u but ive always raced 2s and enjoy riding them more
rm100racer7 2 years ago
@rm100racer7 No doubt, a 2t is fun to ride, I would still ride a 2t if I didnt have alot of money but to be knit picky ill take a 4t
MonkeyManFsU 2 years ago
@rm100racer7
For turqe you want a 4-stroke but if you want a high reving engine to beat the piss outta then get a 2-stroke.
roboman79 2 years ago
you obviously don't know wat true torque is bud 2s all the way
rm100racer7 2 years ago
@rm100racer7.....4 strokes always will have more torque.....that's a fact. 2 strokes just have a more noticeable powerband
monster271 2 years ago
Comment removed
hitokiridx6993 2 years ago
Well that was a bad pic of a 2 stroke engine since the fuel should never be injected while the engine is still opening for the exhause to be realesed.
Nikoslol 2 years ago
Wouldnt that be what cuases backfiring in a 2 stroke. Or am i wrong?
The2Brotherz 2 years ago
how come 2 strokes are so gutsy on fuel compared to a 4 stroke
brettwill87 2 years ago
cos 4 strokes have half the amount of power strokes but their more efficient because they compress the fuel then ignite it so theres less unburnt fuel if you get what i mean
JozeyHall 2 years ago
it's because they fire twice as much for the same rpm. A 4 stroke only loses a little horsepower, but it uses half the fule
zaqw1111 2 years ago
this has 66,666 views!
EmoSmilyProductions 2 years ago
I heard that leaving your engine to idle (to wwarm up the engine) is bad? But isnt riding with a cold engine also bad? I ride 125cc 4 Stroke bike.
IP1NKYI 2 years ago
it's good to let idle- just because it coats all your top end with oil. It also heats up the cylinder and carb manifold so the gas atomizes better resulting in a smoother ride. If its really cold outside (below freezing) it may prevent your cylinder/piston from cracking; but thats only if you immediately dump alot of fuel into the cylinder. It also is good to idle before you turn engine off so it cools cylinder. However on a 2 stroke, if the jetting is too rich, idling may foul your plug.
PrincessKittenz 2 years ago
My bike has a Fuel Emissions Vavle or Exhaust Gas Recirculater. So the Fuel/Air is heated up before entering the cyclinder anyway.
IP1NKYI 2 years ago
Im pretty sure when you start your bike from cold, its best to not rev it and let it sit idle and warm itself up.
bfmv580 2 years ago
When its cold my bike wont start even with the choke on. So i rev it up to 1500 for a few seconds, which is idle speed anyway, so that it can idle on itself
IP1NKYI 2 years ago
its fine to rev it just dont go like 15000 rpm right away. on a cold day i didnt warm my motor up and i cracked the case somehow
250sxfrider 2 years ago
if anybody needs help with motors dont listen to this ass hole he rly doesnt know what hes talkin about
die4urgovernmentjk 2 years ago 2
this guy is not talking about a deisel engine
gncc1 2 years ago
idk why ppl think that glow plugs act like spark plugs in diesels the glow plugs just warm the diesel fuel this guy is retarded deisel fuel is ignited by compression alone
die4urgovernmentjk 2 years ago 3
Lol, where did you hear that?
DarkAlex174 2 years ago
lol usually its a camshaft that open and closes valves
calebcodyeasy 2 years ago 2
the cam does open and close the valves
they just dont show it
slipknotmaggott666 2 years ago
The thing I notice about 2 stroke and 4 stroke is that the 4 stroke idles at a regular rhythm - chugga chugga chugga chugga....
The 2 stroke doesn't. It has a more irregular rpm at idle like ping dddddding dding ping.
TimpBizkit 2 years ago
2 cycle quads duhh the yamaha banshee the yamaha blaster ???? big engines 350cc , 200cc
spongebonger 2 years ago
can you run a 4 stroke dirt bike all day like a motor cycle or on and off like a 2 stroke plz answer??
huskers006 2 years ago
i dont get your question
yourmom922 2 years ago 2
i own a banshee which is a 2 stroke and i raced my friend who has a new raptor 700 which would be a 4 stroke and he got me off the line everytime but as soon as i hit 4-6 gear he ate my dust....in otherwords 2 stroke all top end 4 stroke all low end tourqe...banshees for sale by the way lots of extras
ducktapecowboy 2 years ago
plus the banshees 350 cc big difference
spongebonger 2 years ago
fuck....... 4 Cycle
mariofighting 2 years ago
a 2stroke engine is shit whitout a good exhaust , thy always talk about the diffrence and shit, but u could start a 4T engine whit out exhaust and not breaking it , but if u would do that whit a 2T it would fuck up the piston so bad it jams and you could trow away cylinder an piston . I know it because i tested it : )
combomaster99 2 years ago
pfft you got to be kidding me real gokart raceing is 2 strokes
rikuwillkillu 2 years ago
mmm,not always. mine has a yamah 4-stroke motorcycle motor whti 4 cylanders.
krzykid6969 2 years ago
how old are you? but im talking about racing there is no class for 4 cylinder motorcycle engine only for drag
rikuwillkillu 2 years ago
'im talking about off-road racing through the forrests... way fore fun with the jumps and river crossings.
krzykid6969 2 years ago
then it wouldn't be go karting anymore it would be rally
rikuwillkillu 2 years ago 3
ty nice 1
galtzur21 2 years ago
hmm@ the 2stoke, isnt there a lot of fuel going trough the exhaust once the piston starts compressing the air-fuel mixture, because the exhaust is still open??
ch3wb4cc4 2 years ago
yea, but the tuned pipe does the job. a back flow is created in the exhaust pipe by bouncing pressure wave. when the piston starts it's compression, the pression push the gas back in the cylinder for higher compression. Hope you get it :P !
Mettallikah 2 years ago 2
ok get it, thanks :)
ch3wb4cc4 2 years ago
but the valve that opens the "compressor" isnt closed yet, so it can flow back, but yes, there is a bit unused fuel that comes out of the exhoust
if you would take a real one, the exhoust is longer open than the fuel intake, but at this one, it isnt off enough to let it not use fuel, becuz the fuel and gasses wont flow fast enough...
bronie12345 2 years ago
its gr8!!!!!
aakr91 2 years ago
AWESOME!~
killertofu101001 2 years ago
4 stroke is heavy look like. And 2 stoke more eazy to go.
imsuxppl 2 years ago
and more pollution
adytohbe2 2 years ago
who cares we r not going to be around long enough to destroy the earth with pollution
XXRichieXXrichXX 2 years ago
thx alot it was great and helpfull
thx again
blackwolfhawk 2 years ago
volvo in the background ;) <3
splonke 2 years ago
haha
Bassmasta94632 2 years ago
this is a horrible demonstration... check out the one by how stuff works with the guy in the khaki shirt.... WAYYY Better. this is garbage
rednoseroxy 2 years ago 2
2 Stroke animation has error.
below of piston is all time white!!!
Gr0nTh0s 2 years ago
4 stroke is just to complicated and they cost way to much to repair so i think that they should just find a way to make 2 strokes more eco friendly and then start puttin them back in dirtbikes because i like the lightness and the power of 2 strokes and 4 strokes are justt 2 heavy and costly
aztech8 2 years ago
what ??? :S my 4stroke 250 was lighter than my cousins 125 beta trials bike :)
bazilisginger 2 years ago
thats not what he said, learn to read.
masonvega114 2 years ago
yeah it was 4 strokes are justt 2 heavy and costly !!! and i can read you nonce !!!
bazilisginger 2 years ago
dude, you talk crap...4 stroke engines are much lighter and produce more HP than primitive 2 strokes...think before you talk next time
kimskis 2 years ago
are you stupid the 4 stroke engine is twice as heave because its got twice as many moving parts. and another thing, 4 stroke engines dont make shit in hp but they make more torque
aztech8 2 years ago
a 2 stroke can produce twice the power of a same sized 4 stroke at the same RPM... think before you talk next time
poopsexis 2 years ago 2
ummmm no. have u ever heard of a little thing called POWERBAND. at medium rpm's a 4t produces way more power which is why they pull outta turns so well. but at high power a 2t hits the powerband so it pulls harder than a 2 stroke.
2t=short powerband but twice the power.
4t=long powerband but hallf the power.
so back to my original point. a 2t cant keep up with a 4t until it hits its powerband. making the 4t the optimal race bike. but the 2t the optimal drag/fmx bike.
tarheelfan94 2 years ago
i guess it just depends on what you are applying the engine to.
poopsexis 2 years ago
yes. each engine has its ups and downs. u just need to know what is better for what. it all depends on what ur doing.
tarheelfan94 2 years ago
your fucking retarded you got it mixed around. 4 stroke engines have more parts making it heaver and 2 strokes only have TWO STROKES making it have more time to do more cycles you idiot.
xSQU1RR3Lx 2 years ago
It is heavier, sure, but my 4 stroke doesnt need rebuilt every now and then and def has more power than any 2 stroke ive ever rode except for that cr 500, but thats just epic.
jaydh78 2 years ago
but the most you do to refrest a 2 stroke is replace the piston rings and reeds. more extensive would get a piston as well, and maybe a cylinder going over. in a 4 stroke you have to check and adjust the valves (more intensive work), and if you have to replace rings, a piston, or do cylinder work you have to remove the head and cams. but 4 strokes dont have "more" power, just broader, smoother power deliveries. if they kept R&Ding 2's, they would have just as much power as the 4's today.
socmonki 2 years ago
Comment removed
gncc1 2 years ago
four strokes and two strokes have almost the same power... wit different torques
and btw two stroke engines were only used because were very light thus giving a better power to weight ratio. example a crf 450 is slightly slower than a cr500 . they have they same weight (120 kilos dry) but they have almost the same power
KapRowMeat 2 years ago