Bob, I did an article on Dales kit, and measured ackerman before and after.
http://www.tigersunited.com/techtips/PaulickAckerman/pt-PaulickAckerman1.asp
The ackerman come back 3 degrees, when measured with quality turntables.
I also measured the bump steer, which was fine after the installation
of the kit. I did not measure it before, and in retrospect, should have
to be able to tell if there was a change.
One day, I will do an article on bump steer as well.
Larry
Bob Palmer wrote:
>Steve,
>
>I heartily agree with your comments, and in fact would be even more
>emphatic. Perfect Ackerman or anything close to it is NOT desirable, except
>maybe for trailers that are only going to be towed at <25 mph. There are
>tire tread slip angles and other factors to be considered. Colin Chapman has
>also gone on record as advocating parallel or even reverse Ackerman geometry
>for race cars - although probably not as extreme as a stock Tiger. In my
>experience, using the MGB steering arms and moving the rack back 0.5" gives
>a substantial improvement in the steering feel. Switching to a Midget rack
>is a separate issue from Ackerman. It's a better design and reduces steering
>effort over the stock rack, plus has a quicker ratio. Bump steer is a major
>consideration and it would be best to have it adjusted by a competent
>alignment shop. Even a stock Tiger may not have the bump steer properly
>adjusted and the improvement in steering feel can be enormous.
>
>Bob
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