Treehouse Offset Bushings - caster talk

[Skafrog]

fuck man, don't say that! I sure as hell hope not!

Hmm, thats interesting.
No one has ever needed new bushing material, even the race car which has had them on for ~2 years does not need them. Merely a joke :)

[trent]

If the THR bushings cause "excessive" caster on a stock E30 suspension, then what is happening to the suspension geometry when using these bushing with E36 suspension parts? Obviously the result is (ideally) a centered wheel, but you also end up with a control arm that is no longer near its original location. Maybe some of the race engineers on this board can discuss how this might affect the suspension geometry for those going to 5-lug. This may not be much a problem for street use, but it must be having a negative effect on the track.

Nobody ever said for sure it was "excessive"

I would however like to see a complete alignment spec on a E36 5 luged E30.

Skafroggie, you have any of these sheets like yours for one of these cars? My biggest concern with the E36 cars is the change in spindle geometry in relation to the e30 geometry and how that effects bump steer.

[JasonH]

Nobody ever said for sure it was "excessive"

I would however like to see a complete alignment spec on a E36 5 luged E30.

Skafroggie, you have any of these sheets like yours for one of these cars? My biggest concern with the E36 cars is the change in spindle geometry in relation to the e30 geometry and how that effects bump steer.

My bad. Perhaps I used too strong of a word. But, that wasn't the point of my post.

What I am interested in is what happens dynamically to the E36 5-lug suspension set-up during movement. That is what I believe you were getting at the later part of your post. I just don't recall seeing a discussion about this despite the number of 5-lug swaps being done.

[trent]

Nobody ever said for sure it was "excessive"

I would however like to see a complete alignment spec on a E36 5 luged E30.

Skafroggie, you have any of these sheets like yours for one of these cars? My biggest concern with the E36 cars is the change in spindle geometry in relation to the e30 geometry and how that effects bump steer.

My bad. Perhaps I used too strong of a word. But, that wasn't the point of my post.

What I am interested in is what happens dynamically to the E36 5-lug suspension set-up during movement. That is what I believe you were getting at the later part of your post. I just don't recall seeing a discussion about this despite the number of 5-lug swaps being done.

Yea, understood. This is why I want to see an alignment sheet :)

[E30-323ti]

I didn't use the THR CAB's but here are my alignment specs anyway

http://www.r3vlimited.com/phpBB2/viewtopic.php?t=15440

direct link:

http://www.ubersaloons.co.nz/uber3/5lug.htm

You will see using stock strut tops you get positive camber.
I have fixed this now and I'm running -1d camber om the fronts, all other alignments no.'s are the same (haven't scanned the page yet sorry)