Landracing Forum

Tech Information => Technical Discussion => Topic started by: 55chevr on January 24, 2009, 02:23:23 PM

Title: Motorcycle Rear Brake Setup
Post by: 55chevr on January 24, 2009, 02:23:23 PM
This year for Bonneville I wanted to reduce the rotating weight and drag from the front brake. So I took the the front caliper and rotor off the bike. It would be tough to load and unload a bike off a pickup bed without a front brake to grab. I decided to use the front master with a long hose back to the rear caliper. Worked out fine. I would prefer to use the rear master with the rear caliper for stopping on the course and still keep the front master option for loading. Is there a way to combine the front master and the rear master with a tee connection into the rear caliper? Do I need a check valve?
Joe
Title: Re: Motorcycle Rear Brake Setup
Post by: oz on January 24, 2009, 02:39:48 PM
You could use a standard Tee from Goodridge or earls and fit a line lock on the run from the bars to stop the back feeding of the resevoir

http://www.compbrake.co.uk/brake_p4.htm

You could even use a thumb brake like the stunt riders use if you wanted to lose some bulk from the bars.
Just a thought.
Oz
Title: Re: Motorcycle Rear Brake Setup
Post by: bak189 on January 24, 2009, 04:49:45 PM
For loading and unloading without a frt. brake....
..........put it in low gear and use engine comp. and the clutch lever.....................very simple.............










Title: Re: Motorcycle Rear Brake Setup
Post by: 55chevr on January 24, 2009, 05:37:16 PM
Tried that but the clutch drags just a bit too much when loading ... Joe
Title: Re: Motorcycle Rear Brake Setup
Post by: krusty on January 24, 2009, 06:59:36 PM
Put a small shut-off valve in the front brake line before you tee the front and rear lines together. Once you've unloaded, close the valve. Check with your local oval track late model/sprint car supplier for the valve; they're commonly used in those environments.   vic
Title: Re: Motorcycle Rear Brake Setup
Post by: 55chevr on January 24, 2009, 08:47:35 PM
Vic ... found a valve in Speedway catalog that will do that .... thanks ... Joe
Title: Re: Motorcycle Rear Brake Setup
Post by: ol38y on January 24, 2009, 09:08:10 PM
I could be wrong but, you're gonna need 2 valves aren't ya. One to isolate each master cylinder.

Hooking the rear brake to the front master cyl. seems much simpler. KISS theory

Just my 2c 
Title: Re: Motorcycle Rear Brake Setup
Post by: 1212FBGS on January 24, 2009, 11:01:39 PM
you cant have 2 m/cyl in line... when 1 m/c pressurizes it bleeds out the compensating port of the other m/c... you cant put in a 1 way check valve cuz it wont release pressure
kent
Title: Re: Motorcycle Rear Brake Setup
Post by: bak189 on January 24, 2009, 11:07:40 PM
If your clutch drags to much for loading and unloading get a aftermarket Barnett clutch.....
.....very simple............................................................
Title: Re: Motorcycle Rear Brake Setup
Post by: 1212FBGS on January 25, 2009, 04:32:08 AM
yep if all the release stuff checks out OK its usually warped plates.... i've been using Barnett stuff for a long time, good stuff, great people... get yourself some
Kent
Title: Re: Motorcycle Rear Brake Setup
Post by: oz on January 25, 2009, 05:25:17 AM
or mount two rear calipers its easy no tees no valves or use a late model cbr1000 it has two indepependant inputs if i remember rightly
Title: Re: Motorcycle Rear Brake Setup
Post by: saltwheels262 on January 26, 2009, 10:11:18 AM
 two people are needed to load mine each time on to anything. i am always on left and

#2 on right. #2 operates rear brake pedal while pushing/stabilizing bike. have tried in gear with clutch; ezr w/ pedal  operation.

franey