Since we drastically changed the Toyoto MR2 Steering hubs we had to totally re-calculate all the steering geometries. We had to set up the "scrub radius", camber, caster, and akerman. We calculated maximum front wheel turning angles using the new steering rack we bought. This rack has a lot less travel than the stock Toyota MR2 rack. This means we have less steering wheel turns lock to lock. Now we will also have more steering effort. We have to shorten the steering arms to get the turning radius with less rack travel.
After calculating and mapping the proper pivot point for the tie rod ends, matt cut the Toyota Steering Arms and ground and welded them back to gether.
Jim and Matt studied Akerman Steering and built a two dimensional mock-up to test the steering geometry. This will assure that in a tight turn, the inside front wheel will turn the proper amount more than the outside wheel (the is travelling a smaller diameter radius in a turn). We also made a 2D graphic of the front fender to study tire clearance in a full-lock turning situation.
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