Rear camber on group 4 tyres i run 0 deg due to width of tyre, one thing to check on the front end does the steering rack have any tight spots when jacked up with the weight of the wheels. On my Hawk the steering rack platforms had distorted due to welding and was putting a bow effect on the rack body when the clamps were tightend, I over came this by maching the inside of the clamps to a width of 3mm
Regards Ken
Even with a 345 tyre I would still run with 0.5 degrees of negative. There is so little camber gain on the strut type suspension that as soon as the car rolls in a corner then the wheel will go positive so any negative you can introduce statically IMHO is an advantage. Clearly you would also not run with 1.5 degrees of negative on the road.
"You can lead a horse to water, but a pencil must be lead"
Stan Laurel
Unless you had to because some jerk ordered the wrong struts of course.......
Thread Hijack!!Originally Posted by john
& Paul used to speak so highly of you!!!!
"You can lead a horse to water, but a pencil must be lead"
Stan Laurel
Hee hee,, well I'll butt into anyone's conversation. Somebody used to speak highly of me? Oh, that Paul... Now I know you're kidding!
Update and back to chassis tweaking. Just went out again for another bit of excitement. Car is rock steady at speed but very sensitive to steering input with minimal self centering. I tried going up to 20 psi on the fronts which gave a v small improvement in self centering but not much off line. Under dynamic steering it feels great / just fine etc etc.
I have not stiction in the the steering and no wear. I also have upgraded rose jointed 131 uprights so dont think that geometery is at fault. I am coming round to the fact I am running Michelin race tyres TB15 215's on the front that have a very flat and sticky profile so will follow were they are point more than an ordinary tyre.
131? They should be 132 items.
What's your bump steer like?
Do you have a split alloy column bearing fitted?
Last edited by strat24v; 20-12-2015 at 14:39.
Typo yes 132! Bump steer how does one check this on the road? I hit a few bumps both cornering and straight at c70mph and the car was quite well behaved.
re column bearing are you referring to the top of the steering column?
Bump steer is something that you need to reduce or eradicate while setting up your suspension. It's probably more important to fix than any other part of your chassis setup. If you have the hawk build manual, there is a section in there in how to fix it, if not I'm sure someone on here can give you a link to it.
The split alloy bearing is fitted on the intermediate steering shaft. Owners generally replace them with a proper bearing of some kind.
I have the build manual and have read this up.
What are the symptoms of bump steer?? as all I am trying to dial out is the straight ahead sensitivity at the mo. Car was built by the legendary Bob Pilot rip so with all the shimming evident I think it is fair to say I will not touch yet.....
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