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What spec urethane for radius arm do-nuts?

Posted: Fri Jul 25, 2008 8:44 am
by wshawn
Did ask this question on the centre-link topic but thought it might deserve it's own question space, so sorry to ask it twice :oops:

Any way to cut a long storey short I am having the front end of my 412 rebuilt as per the Ray Greenwood method of delrin bushes, audi inserts, etc, etc...

The one bit of info I have struggled to find is the spec for the radius arm do-nut bushes. I found and read ubercraps reproduction but all I can seem to find is the fact that they need to about 50 duron.

I have spoken to my supplier and they cast it in mininmum rod lengths of 500mm (so I'll end up with stacks of the stuff) and they can make it too any shore hardness I require.

Therefore can someone enlighten me as to the correct diameter and thickness of them so that I can order the correct urethane to make them up from and could I use the same stuff to form the bush that sandwiches between the front axle carrier and the vehicle body at its central mounting point?

Posted: Fri Jul 25, 2008 9:07 am
by ubercrap
Be very careful in your material selection, the ones I made are no good.

Posted: Fri Jul 25, 2008 9:11 am
by wshawn
Any idea what the problem was?

Posted: Fri Jul 25, 2008 9:58 am
by ubercrap
See my reply in the center link thread.

Posted: Fri Jul 25, 2008 10:19 am
by wshawn
Just have, thanks.