[Land-speed] Sunbeam Suspension

[Ed Van Scoy]

It has been said already that all cars are different.... My Corvette tends to
hang the right rear out if it gets loose. At El Mirage it's quick, at
Bonneville its slow and steady. Simply backing off the throttle a bit
straightens it up with no steering inputs (at least most of the time.....)
Ed
-----Original Message-----
From: Kirkwood [mailto:saltfever at comcast.net]
Sent: Wednesday, June 17, 2009 12:51 PM
To: 'land-speed'
Subject: [Land-speed] Sunbeam Suspension

If the car is starting a yaw to the right the driver will naturally turn to
the left. Using Mayf's numbers the right rear is loaded more than the left due
to caster effect. Is this a bad thing? The upstream tire is loaded greater
than the downstream tire which would be a tendency to *not* roll the car. If
the downstream tire had a greater load applied wouldn't it want to dig in and
tend to roll the car? Is caster is a good thing? I don't know, but very
interested your responses ---------------------------------- . . . Full left
turn RR = 900 # for an increase of 30 # . . . Full right turn LR = 900 # for
an increase of 40 # --------------------------------- Mayf: You say offset is
equal on both sides. Do you mean the rear wheel base is 9/16 wider than the
front but perfectly centered in the car? . . . ''Off set of rear to front is
approx 9/16 inches (9/32 per side) Any closer and I would have clearance
issues. I used shade tree process to mount the race frame in the body so I am
sure that is the error.''