Here's my latest OCRC indoor clay B64 Setup for Outside on the front arm. Getting very close to a baseline that can work everywhere with small tweaks. This setup is a little more stable for those wanting steering but still easy to drive over jumps and obstacles.

Updated B64 "outside front arm" setup for anyone curious. The axle height is +1 as measured from the 0 setting being axle closest to the hinge pin.

Source:

K. Wenger