Thanks. We'll have to check the rear toe again. We had it set up with
1/8th toe in at the rear, but maybe it has changed. It's pretty stable
in a straight line, so I hadn't considered the toe question.
I'll check out the rate link, too.
Scott
From: chasgee@aol.com [mailto:chasgee@aol.com]
Sent: Tuesday, June 01, 2010 11:18 AM
To: Barr, Scott; gt6steve@aol.com
Cc: fot@autox.team.net
Subject: Re: [Fot] Spitfire rear spring rate
Try this: http://www.thedirtforum.com/leafspringrate.htm
It gives numbers that don't quite make sense for a transverse leaf
spring mounting, but it's an easy way to compare what you have to other
options. The spring shop will also understand this number better. It
also jibes with what you find when you measure the rate with a press and
scales.
Your twitcheness and inside tire temperatures is most likely caused by
too much toe out at the rear. The cars really like to wildly oversteer
with even a little bit of toe out. Set the car up for 1/16 or, better
yet, 1/8 toe in per side. This makes the car much more stable.
Chuck
-----Original Message-----
From: Barr, Scott <sbarr@McCarty-Law.com>
To: fot@autox.team.net
Sent: Tue, Jun 1, 2010 6:18 am
Subject: [Fot] Spitfire rear spring rate
Can anyone tell me the stock spring rate for the 1500 Spitfire's rear
spring? This would be a swing-spring.
It's time to get the car back to the frame & spring shop. The rear
spring has started to sag a little and we've now got what looks like 6-8
degrees of negative camber back there. The tire temperatures are much
higher on the inner edges than in the middle and outer edges. And the
car's twitchier than hell - very loose.
There's a non-stock spring back there now, which is a little too light
since I borrowed it from an 1147 car, along with its axles. I'd like to
be able give the spring shop a benchmark for how stiff the stock spring
is.
Scott B.
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