Lotus Elan

Adjustable top wishbones

PostPost by: Chancer » Sat Oct 13, 2012 1:15 pm

I have in the past machined down the trunnion threads on the uprights to make them compatible with rose jointed wishbones, this was on a Caterham and it worked just fine.
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PostPost by: vstibbard » Sun Oct 14, 2012 2:20 am

Have you checked for binding at full bump with these, i looked at these for 26r, but with the 26r lower wishbone ended up binding...definitely the better solution from engineering perspective..

Cheers
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PostPost by: stevebroad » Sun Oct 14, 2012 10:09 am

Not sure what you mean by the lower wishbone binding, binding on what? However, I have checked that the joint doesn't run out of movement during full suspension travel and adjusted the angle of the bearing carrier slightly as a result. I THINK that I have covered all of the bases :-)
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PostPost by: vstibbard » Sun Oct 14, 2012 9:06 pm

Steve, what you described re bearing carrier is the binding i referred to i suspect, in our case the caterham trunnion was binding at full droop.

We had solid uprights from US, which are used on early sixties F2 cars, not sure i would run with std uprights with thread machined off as it would be marginal having seen these break on tvr griffith race car in past when using moderm r series tyres

Overall great result Steve.

Cheers V
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PostPost by: stevebroad » Sun Oct 14, 2012 10:22 pm

Thanks, V, I am happy with the result so far. Sorting out adjustable anti roll bars for the front and rear now. I will then have as much adjustment as I think I will need :-)
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