09-20-2017, 07:56 AM
I've seen Darts and Go Karts anywhere from 12 degrees to 15 degrees of castor. My Pop's GK 800 was at 12 degrees. He had a bit f a collision with one front wheel and bent that axle side back. We were careful to measure both the undamaged axle end, and for insurance, we measured my undisturbed 1200 front axle. Both were at very near 12 degrees, so we jigged the bent side of Pop's at that angle. We couldn't tell any handling difference after fixing it to before it was bent. 7 degrees kingpin inclination seems to do well. The three CAD designed karts I have built are all at 12/7 degrees, and handle well, steer easily and give the poor old arms and shoulders little fatigue. Ted