s1 motorsport project

As promised:
The alloy link:
[image]http://i69.photobucket.com/albums/i48/GeorgeLotus/th_bar.jpg[/image]

This way forces applying to the outer wheel (which caries the highest load during cornering) transfer to the inner (which is rather unloaded).

The toe link kit I�ve manufactured (but still haven�t found time to install it on the car…):


[image]http://i69.photobucket.com/albums/i48/GeorgeLotus/th_toelinks.jpg[/image]
I do not really think that stronger links exist, or better rose joints. AFAIK, these are capable for almost double axial load than the others.
Also, the spacers I fabricated, have a very close tolerance for the inner hole. This way, although the bold gets into them with a small difficulty (I don�t mean you need a press or anything like this, of course!) there is no play even when the bolt is free. All the kits I came across, have this hole a bit bigger than it has to be (in my opinion). I believe under high lateral forces this issue can alter the rear toe quite a lot.

George - thanks for the photos.

I understand the alloy links across the subframe now - haven’t Lotus also introduced a similar system now?

Really? Did they copy my idea?

George - thanks for the photos.

I understand the alloy links across the subframe now - haven’t Lotus also introduced a similar system now?

Lotus definitely have a similar system for the S2. There seem to be two versions, one which just links the tow links, and another that also attaches to the chassis in the centre.

This seems to have been a big issue with track cars in the US that have been running slicks, but I haven’t really heard any major concerns in the UK.

Also see that Sector 111 have developed their own brace for the S2.

Nice one William. I didn�t know about that.

I�ve noticed that the use the Aurora rose joints and according to them, these are rated for 4100 lbs load capacity. Isn�t this low? They have probably made a typo mistake, don�t you think so?

I know of a number of tests that have been done over here on the rear subframe that have shown extensive flexing even on good old 48’s.

In my opinion it is a large factor as to why we all (well those of us who haven’t done something about it ) have to run so much rear toe in to get our cars to handle well.

Sean…

[image]http://i34.photobucket.com/albums/d121/stevegreen101/Untitled1.jpg[/image]

Sean - are you saying its the subframe that flexes or the longerons themselves?

Yes, as Sean just said, the subframe is flexible. Especially at the rear lower wishbone and toe link pivot point.

Yeah Steve, as George has said its the subframe that flexes.

sean, george and everyone

excellent discussion

george - your ‘brace’ is excellent, thanks for the pic