I have spent some time, as others have looking at this “bump steer” problem and having seen the “fix kit” (online) available in the US and having seen the Williams’ spacers (in the flesh), that fit under the ball joint, raising it by around 1” 5/16, I feel the fix is easier than we might think.
I am no expert on suspension geometry, but I have been involved in building a prototype (which became a production) 3 wheeler.
I think that the problem, ie. “Bump steer” is caused by the increase in length of the coil over unit. This has messed up the ride height and in doing so has changed the angle of the track rods.
I would not be happy to fit a spacer into the system, without first seeing the maths, or a finite element analysis, proving that it is up to the job, as the forces exerted on it would be massive and as the spacer will be acting as a lever magnifying this force.
I would, however, be happy to replace the SPAX dampers with others of the correct length, remembering that the springing and damping differences will change the ride and body role, but not the bump steer. So a good adjustable damper with the correct rated spring would be the best cure in my opinion.
I am sure that if Morgan decides to change from the SPAX unit back to SUPLEX, or another manufacturer to cure the problem and it works, my dampers may well mysteriously stop working and have to be replaced on the warranty.
Is it possible to get the SUPLEX unit measured to compare it to the SPAX one, so we can look into “off the shelf” alternatives?
