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Re: Corner weight conundrum

To: Jay Shaffer <shaf@zenten.com>, RMSolo RMSolo <rmsolo@rmsolo.org>, Spridgets <spridgets@autox.team.net>
Subject: Re: Corner weight conundrum
Date: Thu, 24 Oct 2002 12:00:31 -0700 (PDT)
--- Jay Shaffer <shaf@zenten.com> wrote:
> I've been chasing a problem with the Midget that is
> driving me absolutely
> crazy. Essentially the left rear of the car is lower
> than the right rear
> (measured at the rear jacking points) the fronts
> (measured at the front
> jacking points) are equal. There used to be a two
> inch difference between
> rears. I replaced both rear leafs with new 2"
> lowered springs. (I'd also
> done the the fronts with 2" lowered 520# springs)
> still the left rear was 1
> 1/2" lower than the right rear. I then put a 3/4"
> block under the left rear
> shackle perch and still had about an inch of
> difference.
> I had the car corner weighed at the race (with me in
> it @170#s) in this
> configuration. The weights were:
> 
> LF:504 RF:464
> 
> LR:536 RR:364
> 
> Since I had a lowering block with me I thought "I'll
> lower the right rear an
> inch and that should give me a level car and shift
> weight to the right
> rear."
> We put the block on the right rear, our height
> difference is now down to
> 1/2", We take it to the scales and got:
> 
> LF:473 RF:497
> 
> LR:540 RR:352
> 
> Totally unexpected results. I'm pulling out my hair.
> 
> Bottom line. Which corner(s) do I lower/raise to
> equalize this thing better?
> -- 
> 
Jay,
   Preloaded sway bars and/or panhard rod????  Make
sure all of these are disconnected.  Make sure that
both forward rear spring mounts are in correctly.  The
bolts that go thru the spring should be up in the
recess.  BTDT!!  Don't worry so much about the car
setting level but get the weights better.  My car sets
low on the left front but the weights are darn near
perfect.  Are you using the adjustable spring seats in
the front?  Are they allowed?
I've been thru this myself and can't give you a
definite answer.  I just kept moving things around
until it all came together.  Remember that adjusting
one corner has an effect on the other three not just
the opposite one.   Did you notice that you lost 6
pounds total between the two readings??
The next time you go to the scales take some 1"x6"x6"
boards and place varying heights under the wheels as
the car is loaded unto the scales and check your
readings then.  Good luck.

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