The only observation I'd make is the rubber bushing design does not allow
for any possible de-coupling of the torque arm under braking. As others have
pointed out, there are a number of other variables at play here, including
wheel rates f/r, dampers used, brake bias etc, that could either magnify
or lessen the effect.
The other thing I'm thinking about is the instant center and anti squat, in
terms of off corner/on throttle affect.
I believe the torque arm brings forces into play which I'd prefer to avoid,
if possible. The one thing I do like is the ability to have good forward
bite with softer rear spring rates and the lack of bind in roll.
In a message dated 2/12/2013 5:31:40 P.M. Pacific Standard Time,
gswaybright@yahoo.com writes:
Ron,
I think the main variable is the specific design of the torque arm
(geometry, construction and mounting techniques). I assume the production
GM
F-body design has many compromises due to cost and packaging. I'd expect a
well engineered aftermarket setup would avoid the performance related
concerns
on brake lockup unless it was designed primarily for straight line
applications.
With this in mind, I'd have little concern on how Dan's works,
or my Griggs Racing setup. I will admit that I have yet to risk my Tiger by
pushing hard enough to find the limits, especially since my Spec Miata is
so
much ea$ier to replace in a worst case scenario.
Stephen
________________________________
From: Ron Fraser <rfraser@bluefrog.com>
To:
genepadgett@comcast.net; 'Bob H' <tgrrr@meadowcrk.com>
Cc: 'Tigers'
<tigers@autox.team.net>
Sent: Tuesday, February 12, 2013 6:51 PM
Subject: Re:
[Tigers] Torque Arm under braking force diagram?
It seems to me we might
be missing some variables with the setup
since there are variable results.
Possibly different front or rear spring
rates or maybe brake pads and type of
tire.
I'm going to throw in another idea. Anyone look at Air Ride technology
for
the Tiger?
Ron Fraser
-----Original Message-----
From:
tigers-bounces@autox.team.net [mailto:tigers-bounces@autox.team.net]
On Behalf
Of genepadgett@comcast.net
Sent: Tuesday, February 12, 2013 5:26 PM
To: Bob H
Cc: Tigers
Subject: Re: [Tigers] Torque Arm under braking force diagram?
Bob,
Many thanks for sharing your rather sobering spinout experiences and the
technical information. The latter is going to take me more than one read to
understand everything, but I am getting the picture! I am thinking that the
Tiger's short wheel base is not helping things in our particular
application.
I am inclined to enjoy twisty roads whenever found (and hopefully more
autocrossing in the future). A potential unpleasant surprise under heavy
emergency braking in a sharp corner is not something I want to risk. If I
was
just drag racing, or doing stop light burnouts, that would be a much
different
situation.
Fellow Listers,
I, for one, am still looking forward to hearing
any experiences with the
Caltrac system. It appears to only control axle
rotation in the acceleration
mode and the axle is otherwise unrestrained in
braking. Seems like a good
application for the Tiger, in theory at least.
Gene
----- Original Message -----
From: "Bob H" <tgrrr@meadowcrk.com>
To:
"Tigers" <tigers@autox.team.net>
Sent: Tuesday, February 12, 2013 2:31:30 PM
Subject: Re: [Tigers] Torque Arm under braking force diagram?
For the more
technically oriented in this group:
http://www.unbalancedengineering.com/Product_Development/Development%20of%20
the%20Unbalanced%20Engineering%20Decoupled%20Torque%20Arm.pdf
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