The first photo below shows my home made bump steer gauge. Why pay loads of money for something that can be made out of a few items I had laying around the garage. The only Item I had to buy to make it was the piano hinge. The only issue with it so far is that the piece of wood that is attached to the hub is not perfectly flat but this doesn’t cause much of an error when the bump steer is so bad on the Marcos car. I will probably replace the piece of wood with an aluminum or steel plate at some point in the future but this won’t be required unless you are trying to measure the bump steer on a car where it’s almost zero.
The other thing I’ve done is fit a set of tubular wishbones. The lower ones are none adjustable, however the top ones are adjustable. This means I should be able to set the camber and caster of the front suspension. The only modifications I plan to do in the future is to narrow the steering rack by about 50mm and then modify the track rod ends so the height of the mounting point can be adjusted. Once this modification is done I’ll spend some time trying to set the cars suspension geometry up and I will have hopefully solved the problem of bump steer.
