The pad or rotor's coefficient of friction actually has little to do with it
once one's brakes are good enough to put all 4 little tires at incipient
lockup throughout the entire braking event.
It just sounded like you were disputing that with everything else remaining
the same in a brake system, there would not be a greater temp rise of a
given rotor mass for a greater vehicle mass.
Unless, of course, you intend to convert kinetic energy to radio energy
instead of heat energy.
Chuck
From: "Jay Novak" <[EMAIL PROTECTED]>
Reply-To: [email protected]
To: <[email protected]>
Subject: RE: [F500] Brake Issues for MC cars
Date: Thu, 19 Apr 2007 08:38:19 -0400
Gee Chuck, of course heat is how brakes work. How about if the pads are
300
deg cooler, how much cooler is the fluid, how much more consistant is the
pad temperature, how much more consistant is the Mu? Maybe, just maybe
there is just a bit more to good brakes than just being able to lock the
brakes.
Blah blah blah.
Thanks ... Jay Novak
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] Behalf Of
Chuck Voboril
Sent: Thursday, April 19, 2007 1:56 AM
To: [email protected]
Subject: RE: [F500] Brake Issues for MC cars
Cooler temps...Yes, thats what I would expect for the pads since you have
twice as much pad area.
but not the rotor temperature. It will increase if you are able to stop
sooner. or stay the about same if you stop in the same distance.
Turning speed into heat is how brakes work, Jay.
BTW, the KBS's have uprights that allow mounting dual calipers just like
your car, but few people run them on KBS's these days for some reason.
I personally like that dual caliper setup very much.
But I like the large outboard rotors of a Sidewinder even better.
The KBS is about about as light as one can make a F500.
The addition of Rotaxes to them required some frame strengthening vs.
running a Kaw.
Chuck
>From: "Jay Novak" <[EMAIL PROTECTED]>
>Reply-To: [email protected]
>To: <[email protected]>
>Subject: RE: [F500] Brake Issues for MC cars
>Date: Wed, 18 Apr 2007 14:04:18 -0400
>
>Chuck, for your information putting dual calipers on the front LOWERED
>brake
>themperatures by OVER 300 deg F & in general improved limit modulation,
pad
>life etc.
>
>PS: the KBS & Invader are approx. 25 lbs lighter than the Rakavon.
>
>Thanks ... Jay Novak
>
>
>-----Original Message-----
>From: [EMAIL PROTECTED]
>[mailto:[EMAIL PROTECTED] Behalf Of
>Chuck Voboril
>Sent: Wednesday, April 18, 2007 1:18 AM
>To: [email protected]
>Subject: Re: [F500] Brake Issues for MC cars
>
>
>Chris has a good grasp of basic physics.
>
>Given dream rotors, perfect balance and suspension geometry, the mass of
>car
>and size of the tires will determine the stopping distance.
>
>Heavier car on the same tires= longer stopping distance.
>
>Jay, dual calipers don't decrease the amount of heat in the rotor; if
>anything, it CAN run hotter with more pad area and more clamping pressure
>available when faced with more mass to stop.
>
>13" rims with giant rotors are just ONE cheap cure. Number of calipers
>won't
>matter.
>
>Finally,
>
>I doubt if MOST people are going to buy a brand new car just to run a
bike
>motor at 825# in an economically despondent class.
>
>So regardless of what Jay hopes his new car will weigh, most OTHER people
>are faced with a 50 # or more heavier car if they switch to a bike motor.
>
>I don't remember many places on a KBS to take off 50 or more pounds to
>maintain the same as the Rotax weight.
>
>But if they don't switch, they will be 14 to 18 HP down with their
Rotax.
>Hmmmm?
>
>Chuck
>
>
>
>
>
> >From: Chris Reinhardt <[EMAIL PROTECTED]>
> >Reply-To: [email protected]
> >To: [email protected]
> >Subject: Re: [F500] Brake Issues for MC cars
> >Date: Tue, 17 Apr 2007 12:21:12 -0700 (PDT)
> >
> > Jim, stopping equals heat, more stopping is more heat, that's the
> >issue...
> >
> > CR
> >
> >[EMAIL PROTECTED] wrote:
> > One idea for increasing braking power is to double the number of
> >calipers on the front 10" wheels and double the calipers on the rear
axle
>-
> >maybe bigger as well on the rear. Of course, cross-drilled,
cryo-treated
> >rotors will be needed. You can see the price just keeps going up.
> >One of KBS' cars ran this configuration way back when and found that
for
>a
> >F500 it was way too much brake power.
> >
> >Just a brain storm idea.
> >
> >Jim
> >
> >
> >
> >---------------------------------
> >Ahhh...imagining that irresistible "new car" smell?
> > Check outnew cars at Yahoo! Autos.
>
>--
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>
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