Ok, firstly the car is an autotune gemini not a locost (but still cheap)

With the steering wheel central both wheels are parallel and pointing forwards.

At full lock either way the outside wheel turns tighter than the inside wheel.

I thought this should be the other way round. I thought the inside wheel should turn tighter ?

The steering rack is a shortened escort with cortina uprights, the rack sits forward of the upright joints.

Any advise welcome

oh, also full lock is very very tight in guess about 65 degrees (never measured)

when turning the car tight tyres skip !

By any chance, is your rack in front of the steering arms? I think this could make for a negative "fake Ackermann" effect.

The Gemini looks like a good pick

Pete

The rack sits 2" forward of the steering arms.

The gemini chassis that i bought half built, already had the rack fitted on the chassis brackets, but I can't see any reason why I can't move the rack further back.

I assume that this is what I need to do is it ?

Am I right in thinking that it would be better if the they were in line ?

Ackerman has to do with the orientation of the steering arms on the uprights. With reverse ackerman, the angles are probably divergent when viewed from the top. With typical ackerman, the steering arms point inward toward rear axle center, and this helps set up the geometry. Speaking of ackerman though, reverse ackerman is not "fake ackerman" as it is used on formula one cars depending on the designer, just as positive caster had been used during the skirts and venturi pods era. Cheers!

Yes, you need to move the rack back, preferably so the centreline is slightly (0-1"as a guess) to the rear of the steering arm ends on the uprights when they are straight ahead

I've ben reading a lot of stuff on steering and i think you're right, the only confusing thing is that the chassis is bracketeed for the rack to go there.

That was until I did a bit web smurfing and came across a site for someone building one. He has a picture on his site that shows the brackets further back(just where you said)

I've e-mailed him, and am wauting for a reply, but it looks like problem solved.


I had contacted Autotune firstly but was just told the the steering would need setting up properly. I may give them a ring in the morning and ask them where its suppossed to be.

Thanks for the help guys