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F & B Yes and No Posted by Peter [Email]  (#2804)  [Profile/Gallery]
(more from Peter) on Mon, 1 Jul 2002 16:39:14
In Reply to: Re: Features and Benefits, Brad, Mon, 1 Jul 2002 13:55:37 Members do not see ads below this line. - Help Keep This Site Online - Signup |
Thank you for responding to the flag Brad.
I suppose it all depends on what the desired effect you want is. There are
2 schools of thought being applied in our thinking. You are well aware that the perfect world and reality are seperated only by the lack of responsibilty of the driver. When I worked for Michelin many years ago
I was taught that the cornering ability of the tyre and the ability of the suspension to provide that tyre a constant footprint area are closely related. Since then I have always set-up our racecars (F3,Porsche Cup, Vipers GTS) with this in mind. Different drivers demand different set-ups. The best drivers on their tyres have always been the ones with the softest suspension settings. Incidently they have also been the winningest drivers and the fastest qualifiers by a large margin. A car with 4 tyres touching the ground will always be faster then one with one wheel hanging in the air because of a stiff set-up. I have never had the opportunuty to work on a circle track car. I agree with what you say about the amount of load being the same (radius of the turn and weight being applied to each corner). What starts to happen with a vehicle that has a stiffer spring
and tyre wheel combination is that the torsional forces acting upon the vehicle will be transmitted to the chassis and not absorbed by the springs or by the tyre/wheel combination. You cannot have too much of a good thing.
Obviously you know what I mean. Somewhere down the line a price for stiffness has to be paid. SAAB designed the car with a certain amount of flexibilty in the body, if we stiffen the springs too much the flexibility will be increased and that is all that I was indicating to some of the performance fans. I think it is great that you are making a more concerted effort then some of the bolt on fast goodies that are available. I am suprised that you have not addressed the issue of chassis flex, or more precisely fixing the flex problem that all SAABs have with the rear seat area. A 1/4" piece of plywood is not what I would call a serious torsional flex control inhibitor!
Kep up the good work, These fellows need more technical thinkers like yourself.
Peter
posted by 137.144.161...
, Mon, 1 Jul 2002 11:42:05, Mon, 1 Jul 2002 16:39:14 <-- Viewing This Message, Mon, 1 Jul 2002 19:02:38
, Mon, 1 Jul 2002 09:53:02
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