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How much movement on a Drive Shaft?
markal - 26/12/06 at 07:19 PM

Ok, so now i have a contact for the drive shafts GB Eng. How much movement should there be on the shaft to allow for the suspension travel? All help greatly appreciated, regards Alan.


marcotuinenburg - 26/12/06 at 07:40 PM

when i'm trying to move my left backwheel from left to right there is no movement, the right wheel has about 1 milimeter of movement, don't know if that is what you wanted to know.
I't's a Sierra driveshaft.

Marco


hillbillyracer - 26/12/06 at 07:41 PM

Not done so on a Locost yet but I've put a couple of different engines in Minis. I built the suspension up with no bushes or too small a bolts to make the suspension move further than it would in use, then made some dummy shafts up (just tacked the 2 different halves together) that would go everywhere needed without bottoming out or coming close to the edge of the joint pot.
There has to be a more professional method but Heath-Robinson as it is you know that you've got it right.
Is the GB engineering the guy who build grassers? If so then he should know as good a way as anyone.


markal - 26/12/06 at 11:24 PM

The movement I mean is, in and out of the cv joint before the circlip touches, you need some movement but how much? all help greatly appreciated, regards Alan.


ch1ll1 - 27/12/06 at 08:09 AM

can have upto a couple of mm,
you will find most cv joints have some movement in and out


NS Dev - 27/12/06 at 02:45 PM

ring up GB and speak to geoff, armed with the "tightest" measurement between the back of the drive flange cups.

This will normally be at around std ride height. He will use this measurement to make the shafts.

The ones he makes have a much longer spline than the std sierra ones anyway and you only fit one circlip at each end, that way the CV's float on the splines lengthening travel.


markal - 28/12/06 at 08:20 AM

Thanks, i thought i would get the right answer here, thanks guys, regards Alan.