S2000 Racing and Competition The S2000 on the track and Solo circuit. Some of the fastest S2000 drivers in the world call this forum home.

StopTech Big Brake Kit

Thread Tools
 
Old Nov 23, 2004 | 06:01 PM
  #21  
Ludedude's Avatar
Administrator
 
Joined: Jan 2002
Posts: 15,835
Likes: 1
From: Vegas Baby, Vegas
Default

Pssst.... JRitt works for Stoptech, I'm pretty sure HE knows what rear-biased means and it doesn't mean what you think it does
Reply
Old Nov 23, 2004 | 06:17 PM
  #22  
kitwetzler's Avatar
Registered User
 
Joined: Oct 2001
Posts: 2,061
Likes: 0
From: Sunnyvale
Default

My definition of rear biased is correct. The rear brakes lock before the front. Lots of pickup trucks are rear biased as well (look at the prevalance of rear only ABS in the early 90s on trucks.)
Reply
Old Nov 23, 2004 | 06:21 PM
  #23  
mikegarrison's Avatar
Registered User
 
Joined: Apr 2003
Posts: 22,888
Likes: 3
From: Covington WA, USA
Default

Originally Posted by kitwetzler,Nov 23 2004, 06:58 PM
rear biased means that the rears lock before the fronts
No, it means the rear brakes have more torque than the front brakes. It is distinct from the dynamic weight-transfer issue. You can swap ends like that even if you don't have any rear brakes at all (100% front biased).

Think of a bicycle or a motorcycle, where you control how much braking you do on either wheel. You can shift the bias completely one way or the other. You can't do that on a normal car (but many race cars do have driver-adjustable brake bias).
Reply
Old Nov 23, 2004 | 07:01 PM
  #24  
Ludedude's Avatar
Administrator
 
Joined: Jan 2002
Posts: 15,835
Likes: 1
From: Vegas Baby, Vegas
Default

Originally Posted by kitwetzler,Nov 23 2004, 07:17 PM
My definition of rear biased is correct. The rear brakes lock before the front. Lots of pickup trucks are rear biased as well (look at the prevalance of rear only ABS in the early 90s on trucks.)
Your definition is your definition, but it's not correct

http://www.stoptech.com/whitepapers/brakeb...performance.htm
Reply
Old Nov 23, 2004 | 07:13 PM
  #25  
mikegarrison's Avatar
Registered User
 
Joined: Apr 2003
Posts: 22,888
Likes: 3
From: Covington WA, USA
Default

Originally Posted by Ludedude,Nov 23 2004, 08:01 PM
Your definition is your definition, but it's not correct

http://www.stoptech.com/whitepapers/brakeb...performance.htm
I read their paper, and they are using the same (sloppy, IMHO) terminology that kitwetzler is using. I believe that the more correct terminology is to say that the "brake bias" is the ratio of torque on the brakes, not the ratio of deceleration force on the car. Obviously, though, it is a matter of what definition you choose to use.
Reply
Old Nov 23, 2004 | 07:19 PM
  #26  
payneinthe's Avatar
Registered User
 
Joined: Sep 2002
Posts: 2,677
Likes: 0
From: Upland, CA
Default

Brake torque is a measurement of negative acceleration force. The conversion from rotational to linear force is linear (T = rF).
Reply
Old Nov 23, 2004 | 07:44 PM
  #27  
mikegarrison's Avatar
Registered User
 
Joined: Apr 2003
Posts: 22,888
Likes: 3
From: Covington WA, USA
Default

Originally Posted by payneinthe,Nov 23 2004, 08:19 PM
Brake torque is a measurement of negative acceleration force. The conversion from rotational to linear force is linear (T = rF).
As long as the wheel isn't slipping. That's why I said that it was sloppier to use the force definition than the torque definition.
Reply
Old Dec 1, 2004 | 04:08 PM
  #28  
CrazyPhuD's Avatar
Registered User
 
Joined: Jan 2004
Posts: 3,759
Likes: 0
From: SF, California
Default

Originally Posted by Stoptech,Nov 18 2004, 10:10 AM
We have considered making a rear kit for the S2000 using our new ST-22 2-piston caliper (developed for World Challenge cars), but there has not been enough demand.
So I've heard great news that you've changed your mind. Care to comment officially?
Reply
Old Dec 1, 2004 | 05:13 PM
  #29  
Stoptech's Avatar
Registered User
 
Joined: Oct 2004
Posts: 30
Likes: 0
Default

StopTech will be bringing in an S2000 for measurements. From there we will go into development for the kit.

The Honda fans here at StopTech have convinced the powers that be to bring in an s2000 to see if we can make a rear kit. I'll try to keep you guys posted.
Reply
Old Dec 9, 2004 | 01:53 PM
  #30  
Stoptech's Avatar
Registered User
 
Joined: Oct 2004
Posts: 30
Likes: 0
Default

An S2000 was brought in to see if a rear kit is possible.

The stock rear brake caliper on the S2k is a combination of a hydraulic and mechanical braking mechanism, normal braking and parking brake. In order for StopTech to make a 4 wheel street legal kit, it needs to have a parking brake. Our 2 piston rear caliper is hydraulicly actuated. A separate caliper is necessary for the parking brake. Unfortunately, the rear does not allow a place for a parking brake caliper to bolt on safely. If 4 wheel kit is produced, it would be produced without the rear parking brake and that would make it a race only kit.
Reply



All times are GMT -8. The time now is 01:29 PM.