While there have been some good discussions on the Fulcrum Pin, one item
that Tom eludes to has not been explained fully.
The Tiger has the wrong Ackerman Angle. On a normal suspension, the
inside tires turn on a smaller radius than the outside tires. The Tiger
has just the opposite radius in turns, i.e. the inside tire has a larger
radius turn than the outside.
The result is the tires scrub, which is especially bad when backing up
and turning the wheel near or at full turn.
If you have paid attention, you would have noticed and felt, and maybe
even heard the scrubbing and protest of the tires putting stress on the
suspension, and especially the fulcrum pins.
Solution, an entirely new suspension design, as shown in a recent post.
Next solution, new pins, Logans Fix, and a correction to the ackerman
angle problem to help eliminate this issue.
Dale A's kit uses different steering arms and R&P that help bring the
ackerman angle back to neutral, not all the way back to the correct
angle. I don't think it can be done with the current Tiger suspension.
But, in the pecking order of things to do, first correct, or as nearly
as possible the ackerman angle problem with Dale A's kit, then new
fulcrum pins, and finally Logans Fix.
There is an article on Dale A's Kit in Tiger United.
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