Part 4: Rear End Geometry

Part 4: Rear End Geometry 

Rear Arms

The Rear Arms are super short compared to all other cars. That's simply because they are the same length as the front arms, which because of the front end geometry I ended up with, are also really short. The arm holders on the rear are not as wide as the front. They are old school, medium width. Nothing special there, except, if you draw a line viewing from the bottom, co-linear with the front hingepins, it intersects the rear hingepins halfway between the rear arm holders. Also the outer arm-to-hub attachement line intersects, and the upper link locations also. Something maybe only in my head, or then something that really makes the car work more as one. But in any case, in testing, the best set-ups have tended to be where the front and rear links are also equal. THE Car feels balanced and predictable with linear steering. By linear steering I mean, the same throughout the corner, and smooth even as speed increases or decreases, so no sudden changes in the amount the car turns. I think this is due to the fact that the front and rear ends are in-sync. They are afterall bolted to the same chassis, so they shouldn't be too different, or else they will end up working differently from each other. This is my opinion. My goal was to try and make the front and rear roll the same in corners, have similar traction, and act the same in all conditions and speeds. All in all, I found that these short arms gave THE Car a lot more steering and just made it plain FAST!

Read the full Report here!