Thread: Bump Steer
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Old 03-15-2020, 08:15 PM
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Location: Adelaide, SA
Cobra Make, Engine: AP 289FIA 'English' spec.
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Great thread, Morris. I will be doing the checks and measurements before taking my car in for a “professional” check-over.

I remember on my first car...quite a number of years ago...I changed out the front drum-braked hubs for later model hubs with disc brakes. I found that under relatively mild braking, my front tyres were squealing quite a lot, and the tyres were wearing quickly on the inside edges.
Investigating, I noticed that the tie-rods from the steering rack to the steering knuckles were at a significant downward angle whereas they had previously been approximately horizontal.

Back then, I didn’t know what “bump steer” was, but I sure realized without too much thought what the problem was and what was causing it. The tapers were reversed on the later knuckles, so I replaced the disc brake steering knuckles with the old drum brake knuckles. Problem solved, and lesson learnt.

Thanks for posting.

Cheers,
Glen
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