[Morris]

Motor

I know there is a inherent problem with the steering on the Kirkham’s and CSX series of Cobras. The bump steer on those cars is as much as 1/2” in 2 inches of travel in the suspension.

So every time the suspension moves into bump or rebound, the forces on the rack are coming from the steering arms pushing the rack as much as 1/2” in either direction (pushing and or pulling). This amount of bump steer is to much....the allowance is .015” per inch of travel.

So it doesn’t surprise me that the bushings in the end of the rack are deteriorating to the degree that your photo’s showed.

When back in 2004 I explained all of this to Tom K. And He redesigned the uprights so they could remove a lot of the inherent bump steer and I know Tom got it under control,

On KMP259, we completely removed the the MG rack and Tom sent me the new uprights and we built a Appleton Rack at a certain length and were able to eliminate the bump steer issue.....I think we ended up with .030” over 4” of travel.

Sorry for such a long post......but there’s no quick way to say it all.