Yes, either a wedge (thick end faces forward) or only shim the front bolts, etc.
The trail is harder to figure, since it involves the front wheel & tire radius as well as the design of the KP (not just its inclination). Even very low caster ("rake" in a motorcycle) is stable if the trail is enough. This is the distance a theoretical line drawn through the KP axis intersects the ground, compared to a vertical line through the spindle, in inches. Zero trail is a shopping cart.
Thank you for the reply. I'm trying to understand this. I will not be engineering or building this myself. They may have to CNC out a new spindle and or axle. My problem is nobody makes a spindle for a 53 that will accept my 12.88 6 piston Wilwood brakes. I have never been a "they don't make that" kind of guy. Just ask my engine builder. His reply is usually "you want to do what". I have a friend that owns an orthopedic machine shop that would make them out of Titanium if I ask him to. He's a little strange like me. Thank you for your time and thoughts.
