At 10:26 PM 8/10/98 EDT, Rick Morrison wrote:
> Have you tried using lowering blocks to bring the rear end back down? ....
No. Not legal in Stock class.
> Too, you have to remember that the new springs are "tighter" than the
old, sagged ones, and this increases the roll stiffness of the rear end.
Not unlike adding an anti-roll bar to that end.
I think I don't understand this statement. If I did understand I probably
wouldn't agree with it. The stiffness of a leaf spring is related to the
length and number and cross section lf the leaves, and to the modulous of
elasticity of steel, none of which changes with age or sagging. Exceptions
would be if the old leaves were worn thinner or broken, or if the new
springs had more friction between teh leaves. Otherwise old sagging
springs would have the same spring rate as new ones, very similar to new
springs that had been de-arched. Why would you say that new springs would
increase the roll stiffness?
> Does the SCCA allow you to have the springs re-arched?
No. Not for Stock class.
>Or could you get this by tech if you don't tell?
Well, you probably could, if it wasn't too extreme. When you get right
down to it, the entrant specifies which class he will enter, and beyond
that anything on the car is allowed unless the tech inspector reclassifies
it or one of your same class competitors files an official protest.
It's a sportsmanship issue. A large part of the success of the game
depends on the honesty of the entrants. As a general rule, you are trusted
to be honest. But if you are then caught on the wrong side of that trust,
you may expect to be severely chastised and penalized in ways that can cost
you a lot of friends and a bundle of competition points. Thereafter you
would likely have to go through a lot of groveling and tech hoops to get
back in good grace with the system.
>....
>On Mon, 10 Aug 1998 01:33:30 Barney Gaylord <barneymg@ntsource.com> writes:
>>....
>>a problem I have encountered with my MGA new leaf springs. .... to regain
some ground clearance lost to .... sagging of the rear springs. ....
>>....
>>.... the body roll gets to the point where the inside rear fender lifts
until the rebound strap is stretched completely tight. At that point the
rear roll stifness suddenly transitions to infinity. Then with just a
little more body roll the inside rear wheel gets lifted right off the
pavement.
>>....
>>in Stock class one is not allowed to change the springs from the stock part.
>>....
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