Thanks all for your help

[Tom]

if two driven wheels have equal traction then an open type diff will transmit power equally to each one. only when a wheel loses traction will the ratio change.

 

same for plate type and atb's until a wheel or wheels lose traction.

 

welded diffs eat shafts through cornering as the inner wheel (and shaft) wheel tramp or scrub causing bind up in the shaft.

 

Tis the way i see it anyhow

[Toby]

Just for K.J. A locker puts the most strain on the shafts as it's got a savage take up from standstill as it's already locked (even when the cars standing still) . An L.S.D. won't lock until the wheels break traction so less strain as you'll be moving slighty , an A.T.B. won't ever lock solid as it hunts for the wheel with the most traction and transfers power between the 2 so this causes the least strain of all the diff types . If you do hard launches with for example a 120 bhp car with an open diff you won't break a shaft , fit an L.S.D and the risk goes up but not that much and you'll still not break one . Fit a locker and you will break them !!!!!!! .........

 

Thanks Gaz thats cleared it up in my mind - NOT!

So the ATB looks for the wheel with the most traction and puts 100% of the power thru one shaft and this is better!!?? - What am i missing? - I don't expect anyone to mention my one wotnot here!!

[Guest MK1gaz]

Shafts usually only brake when moving the car from standstill on a high reving launch , they never usually break if the cars moving . So a welded diff will break more shafts than an A.T.B. diff will because for the inital moment of take off the shafts are stressed more . The A.T.B diff will cushion the intital shock on take off because it won't lock 100% , this will give enough time to start moving which usually saves your shafts . My mates car broke shafts with a 120 bhp pushrod and a locker last year , now he's got a 185 bhp pinto and an A.T.B. and he brakes nothing

[Toby]

Thanks!

Well the proof of the pud's in the eating so the theory must be right...

 

See what you mean KJ Is there anything he doesn't know??

[Guest MK1gaz]

If your gonna get funny then don't ask questions then in case you don't like the reply . The proof of the pudding is = For years we all broke shafts with a locker BUT DIDN'T once we bought a proper diff

[Toby]

If your gonna get funny then don't ask questions then in case you don't like the reply . The proof of the pudding is = For years we all broke shafts with a locker BUT DIDN'T once we bought a proper diff

 

I know what you mean - done loads with a plate type with tons of revs at the pod then went fat shafts tran-x - Harris stylie - problem solved. Sounds like an atb could have done it but as I say the wheel lifting issue put me off even if you shouldn't be lifting 'em!

 

Thanks for the advice....

[Jeff HPE Motorsport]

If your gonna get funny then don't ask questions then in case you don't like the reply . The proof of the pudding is = For years we all broke shafts with a locker BUT DIDN'T once we bought a proper diff

 

I know what you mean - done loads with a plate type with tons of revs at the pod then went fat shafts tran-x - Harris stylie - problem solved. Sounds like an atb could have done it but as I say the wheel lifting issue put me off even if you shouldn't be lifting 'em!

 

Thanks for the advice....

 

Yeah but Toby, James is lifting both wheels & running a 12.76

 

Who Loves yer baby.

 

Jeff Harris.

[H.P.E harry]

If your gonna get funny then don't ask questions then in case you don't like the reply . The proof of the pudding is = For years we all broke shafts with a locker BUT DIDN'T once we bought a proper diff

 

I know what you mean - done loads with a plate type with tons of revs at the pod then went fat shafts tran-x - Harris stylie - problem solved. Sounds like an atb could have done it but as I say the wheel lifting issue put me off even if you shouldn't be lifting 'em!

 

Thanks for the advice....

 

Yeah but Toby, James is lifting both wheels & running a 12.76

 

Who Loves yer baby.

 

Jeff Harris.

 

[Retromotorsport]

Can i just add its not BHP that breaks things .. its the torque/grip ratio ..

[Toby]

Can i just add its not BHP that breaks things .. its the torque/grip ratio ..

 

Probably the impact too from the clutch dumping!!

 

I meant rear wheels Jeff! Has James got any intentions of that.....I think it would be a good idea!