John;
If you truly have 90% of the car's weight on the front wheels and there
is no braking on the rear, it seems to me that under really hard
braking, you might do a "reverse wheelie". Have you ever grabbed the
front brake hard while riding a bike? ...over the handlebars you go!
I'd move some of the weight to the rear and put brakes on the rear, too.
Regards, Neil Tucson, AZ
-----Original Message-----
From: owner-land-speed@autox.team.net
[mailto:owner-land-speed@autox.team.net] On Behalf Of John Goodman
Sent: Saturday, June 26, 2004 7:52 AM
To: land-speed@autox.team.net
Subject: Re: Speaking Of Brakes
"What does anyone think of my design using front
brakes only on my front wheel drive streamliner. "
John, I wouldn't be in favor of front break bias on
any LSR car. This is a good way to swap ends under
breaking (even with a deployed drag chute). Using 100%
rear bias keeps all that 90% weight at front, pointing
straight under breaking.
Using the road racing car example, adjusting too much
front bias makes for a very squirrelly car under hard
breaking. A proportioning valve (driver adjustable)
will give a road racer some control over wearing
tires, pavement changes and general conditions such as
rain. In a rain condition and if you have a driver
adjustable proportioning valve, you would bias more
heavily to the rear. This is not too unlike conditions
we have on the salt. My vote goes to substantial rear
break bias.
John Goodman
John
--- John Burk <joyseydevil@comcast.net> wrote:
> What does anyone think of my design using front
> brakes only on my front wheel
> drive streamliner - With 90% of the weight on front
> didn't see any point in
> having rear brakes - The front tread is 19" and the
> directional stability will
> be very good at higher speeds .
|