New thread.. Brakes what has Pat tried, and what is his summary, Ryan and others may chime in
06-02-2005, 09:39 PM
#52
AudiWorld Super User
does 8 pistons always mean 2 pads per side like that?
06-02-2005, 10:10 PM
#53
Elder Member
Join Date: Mar 2001
Posts: 11,968
Likes: 0
Received 0 Likes
on
0 Posts
Not certain, but I believe yes.
Every Brembo and AP Racing 8-pot caliper I've seen uses 4 pads per caliper, including liquid cooled AP Racing 8-pot calipers and this <a href="http://www.prosystembrakes.com/20-8008-10-40.htm">Brembo 8-pot</a> CART caliper.
06-02-2005, 11:26 PM
#54
Elder Member
Join Date: Mar 2001
Posts: 11,968
Likes: 0
Received 0 Likes
on
0 Posts
Re: F1 brake calipers
These articles from the FIA 2005 Formula One Technical Regulations have been unchanged at least since 2001,
Article 11.2.3 -- No more than one caliper, with a maximum of six pistons, is permitted on each wheel.
Article 11.3.3 -- No more than two brake pads are permitted on each wheel
According to Piola's "Formula One Technical Analysis", some teams use 4-pot calipers in the rear.<ul><li><a href="http://www.fia.com/sport/Regulations/f1regs.html">F1 Regulations</a></li></ul>
Article 11.2.3 -- No more than one caliper, with a maximum of six pistons, is permitted on each wheel.
Article 11.3.3 -- No more than two brake pads are permitted on each wheel
According to Piola's "Formula One Technical Analysis", some teams use 4-pot calipers in the rear.<ul><li><a href="http://www.fia.com/sport/Regulations/f1regs.html">F1 Regulations</a></li></ul>
06-03-2005, 06:59 AM
#57
the seals retract the piston when off the brakes...
...so if seal X retracts the piston 1mm from teh disc, and seal Y retracts the piston 10mm from the disc, when you apply the brakes with seal X, you'll get pad to disc with less pedal travel then with seal Y.
06-03-2005, 07:28 AM
#59
AudiWorld Super User
Join Date: Feb 2001
Posts: 11,579
Likes: 0
Received 0 Likes
on
0 Posts
What I was saying was...
I was reiterating my earlier point regarding the street cars to show that it is pertinent to race cars. I was basically saying that the factory master cylinder isn't going to support the big Alcon/Stoptech/Brembo six piston, large rotor kits in a race application. Not that you'd ever see a race-bread alcon system on a SCCA T2 car, USTCC car or the like; they don't allow them and even if they did none of the teams would run them. The reason is that because you're pushing more volume through larger calipers that have greater leverage because of a larger rotor... pedal feel goes straight out the window. Bling factor, however, is OFF THE CHIZARTS!
06-03-2005, 07:42 AM
#60
ok, i do follow you, and you are totally right, but...
...you can add more pistons and keep the same displacement. I guess I was assuming that you would make the pistons smaller when you add more.
So like going from a 41/44 to a 31/35/38 for example.
You are right about leverege on the larger disc, no argument there. Though unless you're making some drastic change (100mm for example), something like going from 321mm to 332mm will be pretty marginal in it's affect on feel/bias. Now, i said marginal, not non-existent.
So like going from a 41/44 to a 31/35/38 for example.
You are right about leverege on the larger disc, no argument there. Though unless you're making some drastic change (100mm for example), something like going from 321mm to 332mm will be pretty marginal in it's affect on feel/bias. Now, i said marginal, not non-existent.