BKLOCO
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 posted on 16/4/06 at 10:53 AM |
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Tracking setup
I'm not sure if I can explain this properly but here goes.
If I set my rack in the centre position ie. 1 1/4 turns from full lock (it's 2 1/2 turns lock to lock)
and set my wheels in the straight ahead position, then one track rod has about 2 turns of thread left on the adjustment and the other about 20 turns.
This gives me roughly equil lock in either direction.
Alternatively I can set the Track adjustment so that there is approximately the same number of threads on each side but then I get slightly more lock
one way than the other.
My question is which way should I set it up?
My gut feeling is that I should set it as the first option so that the locks are equal. However will this affect the steering geometry in bump and
droop as the track rods will be unequal lengths?
Conversly If I set it up the other way will it really matter if I have, say, 5 deg more lock on one turn than the other?
I guess this all comes about because the rack isn't in the exact correct position laterally on the chassis but moving it isn't an
option....
Thoughts please....
Experience is what you get when you don't get what you want!!! 
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JoelP
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| posted on 16/4/06 at 10:56 AM |
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you should get the rack, set it so it is precisely in the middle of its range, then position the rack so that both knuckles are an even distance from
the centreline of the car, and ideally (if the length is correct) they should also fall in the right place to eliminate bump steer. If you centre your
rack and the knuckles arent central, your rack isnt central. So in this situation, you must choose to either move the rack, or set it up from the
knuckles, and settle for having different lock on either side. 
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nitram38
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| posted on 16/4/06 at 11:39 AM |
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It sounds like your rack is off centre to start with. When it is in the right place the joints should coincide with the fulcrum on the wishbones. If
these are not aligned then you will suffer bump steer problems.
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mark chandler
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| posted on 16/4/06 at 05:06 PM |
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Irrespective of its position a manual rack does not have a centre point as you would have with a power rack.
You should have the knuckles equel across the chassis.
If you are worried about more lock in one direction pack out behind the knuckle on the long side thus reducing the available travel until the wheel
turns the same amount in each direction from centre.
Regards Mark
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