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I have on the bench at home the longer of the two sierra driveshafts. I didn't mark which was the inboard and outboard ends when dismantling. One
end has some marks, like a cross marked on it and the other doesn't. Can anyone tell me which end is which?
Thanks,
Andrew.
I think they are the same so it don't matter...maybe wrong though! (well that's covered myself!! )
I know your worry, but I think the std sierra lobro type shafts (assuming that's what you're using Ned) are so over engineered for this application that they will be fine fitted the wrong way round.
yes they are lobro type, thanks for putting my mind at ease 
I had the same problem, but if you check the part number of the Lobro joint on each end, it's the same
It's not good practice to fit them so they rotate in the opposite direction to their previous working life. Increased risk of breakage. Any witness marks on the joints which might match up to flanges?
Isn't it bad practice to rotate used driveshafts the wrong way? I'm sure read they can snap under high torque if installed the wrong way round as they take a 'set'.
the forces are the same way which ever way you if it, and id guess its the force which wears it, not the rotation.
Except it would twist it the other way to what its used to which would prob weeken it, bit like twisting a rope so the threads come apart. Sould be ok with these though as said.
Eh... what side does the long one go on, driver or passenger? I don't have my diff yet so just checking.
AHA!! i was right!! YAY!
quote:
Originally posted by jon_boy
Except it would twist it the other way to what its used to which would prob weeken it, bit like twisting a rope so the threads come apart. Sould be ok with these though as said.
As JoelP says, swapping a shaft end to end, but keeping it on the same side of the car will not reverse the direction of the torque it is
subject to. Think about it
Liam
quote:
Originally posted by Liam
As JoelP says, swapping a shaft end to end, but keeping it on the same side of the car will not reverse the direction of the torque it is subject to. Think about it
Liam
quote:
Originally posted by JoelP
quote:
Originally posted by jon_boy
Except it would twist it the other way to what its used to which would prob weeken it, bit like twisting a rope so the threads come apart. Sould be ok with these though as said.
i cant be arsed arguing, but the force would be the same, much in the same way that a nut can go on either way, or a cork screw could go in backwards.
Let's face it - does anyone know anyone that has ever snapped a Sierra shaft ???
Pat...
In answer to which side they go: Longer is O/S (Drivers) and shorter is N/S
BTW no probs in fitting wrong way round. Sierra never (Standard car that is not Cossie) never produced enough power to harm the shafts in normal
operation. Metal torque fatigue genarally only applies to larger dimension shafts where the outside is 'twisted' more than the inside due to
the centripital forces exerted.
Hope it helps.
J
quote:
Originally posted by Avoneer
Let's face it - does anyone know anyone that has ever snapped a Sierra shaft ???
Pat...
I know of folks that have snapped sierra TRIPOD type shafts on tarmac vehicles, and I know of grasstrackers that have snapped sierra lobro type shafts (for some reason grassers seem to snap shafts more than tarmac racers!??) but I have never heard of a broken lobro shaft on a light tarmac car (i.e. under 750kg)
quote:
Originally posted by NS Dev(for some reason grassers seem to snap shafts more than tarmac racers!??)