You don't need bob weights on a 180* crankshaft like this one. You balance the crankshaft first, then add the flywheel and balance it; if you balance them as an assembly then when you replace/machine the flywheel as part of a clutch replacement you would have to remove the crankshaft and re-balance the whole assembly again. By balancing each part of the assembly separately you can replace the flywheel later on without changing the balance by just balancing the flywheel before it's installed.
Glad its's not my crank!!! And what a croc shit !!!! All cranks have a push pull efffect . So whers the bobweights. And how to fuck a balancing machine by blasting it wtih grinding shit !!! What a Wank
@Trimadian65 When you talk like that it only showes how little you know about balancing, some cranks require Bob-weights and some don't. it depends on the design of the crank. American V-8 all require them Most European V-8 don't. when you have an inline motor with even number of pistons like 2-4-6-8 as long as all pistons are either up or down and not some up, some down, some part way there is no need for Bob-weights.
i guess they used scales to measure the weight at both ends, which was not very accurate ,but what you have to remember is ,the tolerance's of engines years ago is totally different to what it is today, for example a formula one engine is in affect seized ,when cold and has to be warmed up by pumping warming fluid around the engine before it will even turn
@hazmat440 You can probably look it up anywhere on the internet, but i'm sure it was accurate back when they used to do it manually... they probably did it between centers...
@hazmat440 I know this is an old thread, but I will throw this out there:
I don't know for sure, but I would use a timing light, activated by the crank bouncing when it spins. If the drive could only pivot up and down, the crank would bounce up and down. The timing light would show the position the crank is at when bouncing, and you could grind a bit to lessen the bouncing effect.
Well Im no ASE certified master machinist but uhm wheres your flywheel and crank pulley at? i was taught they are balanced as one bolted together rotating assembly. so are you just half assing that balance job? or do you know something i dont?
Actually, we balance the crankshaft first THEN add the flywheel, clutch pressure plate and harmonic balancer and balance the entire rotating assembly together. This video clip is entitled "balancing a crankshaft", not "balancing a rotating assembly". Thank you for your question.
Do you balance the driveshaft with the weight of the piston and rods inputted in the computer or do they cancel out each other due to there placement of the driveshaft? By the looks of it it kind of looks like ballancing tires but more complicated to add or remove wieght.
Ok But what about the side to side vibration the big end of the rod can cause durig mid strock. Does that get solved by anything or is it just left unbalanced? I am currently looking for a machinist to machine and balance my racing engine can you give me any advice on what to look for or ask to make sure they are capable of doing a great job? Thanks
@arman757 The age of your comment has nothing to do with its relevance, or your level of douche baggery. I'm not a troll, just freely stating my opinion on this public forum that was designed for just that. So if you dont like what people think of you, maybe you should consider that before shooting off your mouth to a respected proffesional that has taken his own personal time to help educate us. So yes, you are a douche AND go fuck yourself.
@Duckyistrippin ok dudley-do-right. youre really getting heated over this arent you? tell you what man, youre sooooo cool and im such a piece of shit. do you feel better now?
SONG NAME PLEASE!!!
1965mustangfb 3 weeks ago
Out of all the brands, Jaguar is the least reliable car on the market. What a waste of time trying to salvage a junk.
freeman67891011 3 weeks ago
I thumbed up twice only for this coooooooooooooool tune. :D
Deusrexmachina 2 months ago
The crankshaft is as divine as this music!
ROCKSOLID19 2 months ago
Digital balancer, I'm jealous. We're still hobbling along using an analog Stewart Warner balancer. Works great, just needs more manual maths.
thatguywillt 4 months ago
Comment removed
1965mustangfb 4 months ago
You don't need bob weights on a 180* crankshaft like this one. You balance the crankshaft first, then add the flywheel and balance it; if you balance them as an assembly then when you replace/machine the flywheel as part of a clutch replacement you would have to remove the crankshaft and re-balance the whole assembly again. By balancing each part of the assembly separately you can replace the flywheel later on without changing the balance by just balancing the flywheel before it's installed.
SALEEN961 4 months ago
do you know the 3 cylinder crank balancing techniques? thanks
slbargas 5 months ago
Lol. Love the poster of the GT500 hanging up in a Jag shop.
FORDboy357 5 months ago in playlist More videos from ClassicJaguarUSA
'
why need it balance on crankshaft,,,
dont feeling crankshift while drive on the road,,,
the motor is only move move and not crankshift
bestamerica 8 months ago
Glad its's not my crank!!! And what a croc shit !!!! All cranks have a push pull efffect . So whers the bobweights. And how to fuck a balancing machine by blasting it wtih grinding shit !!! What a Wank
Trimadian65 8 months ago
@Trimadian65 When you talk like that it only showes how little you know about balancing, some cranks require Bob-weights and some don't. it depends on the design of the crank. American V-8 all require them Most European V-8 don't. when you have an inline motor with even number of pistons like 2-4-6-8 as long as all pistons are either up or down and not some up, some down, some part way there is no need for Bob-weights.
seenalotabs 5 months ago in playlist Engine Balancing
Peak Oil Ha Ha Ha
largespliff 9 months ago
is that windows 98?
ktxed 9 months ago
its amazing that the crank wa close enough to just grind off come weight.
luvyouinmouth 10 months ago
Holy @#%^ it's chris!!!!
fayo16 1 year ago
Removing material (weight).
ClassicJaguarUSA 1 year ago
what were u doing with the big grinder?
MyUnderSlungLink 1 year ago
Really neat. How much does this usually cost (say, for a I4).
M1911A1 1 year ago
@arseman757 congratulations u sucessfully made urself look like a total douche to 40000+ viewers good job
mrbrady2006 1 year ago
my question is how did people balance crankshafts befor the onset of computers to do the job? can anyone answer this for me.... cool set up
hazmat440 2 years ago
i guess they used scales to measure the weight at both ends, which was not very accurate ,but what you have to remember is ,the tolerance's of engines years ago is totally different to what it is today, for example a formula one engine is in affect seized ,when cold and has to be warmed up by pumping warming fluid around the engine before it will even turn
kevrs2 2 years ago
@kevrs2 , thanks for answering this for me it has been puzzling to me wondering how they did this back then.. thanks again
hazmat440 2 years ago
@hazmat440 You can probably look it up anywhere on the internet, but i'm sure it was accurate back when they used to do it manually... they probably did it between centers...
armhitm 1 year ago
@hazmat440 I know this is an old thread, but I will throw this out there:
I don't know for sure, but I would use a timing light, activated by the crank bouncing when it spins. If the drive could only pivot up and down, the crank would bounce up and down. The timing light would show the position the crank is at when bouncing, and you could grind a bit to lessen the bouncing effect.
stoobers1 3 weeks ago
Cool never seen how they do that but always been curious. Thanks.
DragStripDominator 2 years ago
can i know wad'sda purpose of crankshaft balancer???plzzzzz
16988628 2 years ago
Well Im no ASE certified master machinist but uhm wheres your flywheel and crank pulley at? i was taught they are balanced as one bolted together rotating assembly. so are you just half assing that balance job? or do you know something i dont?
arman757 2 years ago
Actually, we balance the crankshaft first THEN add the flywheel, clutch pressure plate and harmonic balancer and balance the entire rotating assembly together. This video clip is entitled "balancing a crankshaft", not "balancing a rotating assembly". Thank you for your question.
ClassicJaguarUSA 2 years ago
gotcha, i appreciate you explaining. im still learnin
arman757 2 years ago
Do you balance the driveshaft with the weight of the piston and rods inputted in the computer or do they cancel out each other due to there placement of the driveshaft? By the looks of it it kind of looks like ballancing tires but more complicated to add or remove wieght.
regcer 2 years ago
regcer: This video is for an in-line 6 cylinder engine. Typically, in-line engines do not require bobweights for balancing.
V-motors would require bobweights to counteract the push/pull of the rod/piston assembly at a given degree.
ClassicJaguarUSA 2 years ago
Ok But what about the side to side vibration the big end of the rod can cause durig mid strock. Does that get solved by anything or is it just left unbalanced? I am currently looking for a machinist to machine and balance my racing engine can you give me any advice on what to look for or ask to make sure they are capable of doing a great job? Thanks
regcer 2 years ago
He knows what he is doing, you don't :)
davesideways 2 years ago
@arman757 what a douche
Duckyistrippin 1 year ago
@Duckyistrippin im a douche huh? look who replied to a 10 month old comment, troll...
arman757 1 year ago
@arman757 The age of your comment has nothing to do with its relevance, or your level of douche baggery. I'm not a troll, just freely stating my opinion on this public forum that was designed for just that. So if you dont like what people think of you, maybe you should consider that before shooting off your mouth to a respected proffesional that has taken his own personal time to help educate us. So yes, you are a douche AND go fuck yourself.
Duckyistrippin 1 year ago
@Duckyistrippin ok dudley-do-right. youre really getting heated over this arent you? tell you what man, youre sooooo cool and im such a piece of shit. do you feel better now?
arman757 1 year ago