Lotus Elan

Superflex trunnion bushes

PostPost by: jono » Tue Apr 11, 2017 2:24 pm

..knackered after only 9,000 road miles.

The ends had extruded and torn (perhaps my fault for not using the original trunnions caps but there is no mention of this in the instructions).

When I got them out the bore of bushes had worn into an egg shape - almost completely through.

I have gone back to nylon bushes cheap enough to change on a regular basis. The steering and front end feels so much tighter now - you don't realise how much you loose when it happens over time.

I also returned to metalastic bushes on the back after 6,000 miles with Autobush poly bushes - these too had worn in a strange way.

No substitute for original kit!

Jon
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PostPost by: 661 » Tue Apr 11, 2017 7:22 pm

I recently spoke to Tony Thompson about the fitting of these bushes and he said the end caps are not used. I must say, it looks like the caps would ordinarily offer a wear protection.
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PostPost by: dunclentdr » Tue Apr 11, 2017 7:49 pm

I'm in the middle of fitting these as part of suspension rebuild and have fitted end caps to the trunnions - do you know why TT advises not to fit them?

Thanks

David
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PostPost by: 661 » Tue Apr 11, 2017 9:28 pm

dunclentdr wrote:I'm in the middle of fitting these as part of suspension rebuild and have fitted end caps to the trunnions - do you know why TT advises not to fit them?

Thanks

David

No! He said the collars of the bushes articulate with the flat inner side of the wishbones. I suppose the thinking is that it doesn't really matter if they rub against a metal wishbone or a meal end collar.
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PostPost by: jono » Wed Apr 12, 2017 7:31 am

..they do but in the process, the flanges wear and then get torn. There is no specific instruction to use the trunnion covers but some do - it would mean that the polybush has a flat surface to turn against which makes some sense to me.

That said, I won't use them again as I see no benefit over the original, and cheap, nylon kits.

Jon
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PostPost by: 661 » Wed Apr 12, 2017 8:26 pm

I'm building mine with the 26R wishbones which are a flat surface
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