dual bore master cylinder... - TwoWheelForum: Motorcycle and Sportbike forums
 
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post #1 of 11 (permalink) Old 02-21-2006, 09:53 AM Thread Starter
 
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dual bore master cylinder...

I've been looking into this, but its so dam expensive..

"AP Racing master Cylinders feature an adjustable leverage mechanism. This allows the rider to tailor braking forces. In addition, adjustability allows the user to use a multitude of calipers of varying sizes.
Available for super motard, dirt, and road race applications. In single or dual bore configurations (two separate masters; one lever).
Equal line pressure to each front caliper. Separate system ensures the rider can stop even in the event of a line or pad failure."

^from the site www.gptechllc.com

anyway. i really like this idea for my fast bike (safe, great braking) and for my streetfighter (run two seperate lines cleanly instead of a big Y). the piece is 1200$! doesn anyone know if there is another manufacturer of such a thing? i really want to get one or two of em, but i cant afford that.

http://www.gptechllc.com/products_brake_components.htm
(pic is first one on link)
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post #2 of 11 (permalink) Old 02-21-2006, 10:22 AM
 
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It sounds like a good set up...providing they can be tuned together so one doesn't overpower the other...I can remember back in the stone age when I used to run dual point distributors in my 440 Super Bee and GTX and in my 426 challenger what a PITA if they weren't tuned together...
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post #3 of 11 (permalink) Old 02-21-2006, 11:06 AM Thread Starter
 
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i also saw some people running two straight lines from the cylinder, stacked on top of each other. is that better than having a Y split above the fender?
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post #4 of 11 (permalink) Old 02-21-2006, 11:15 AM
 
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I would think the two straight lines could be a problem...With the "Y", even if the pressure in the two feeder lines was unequal, the pressure below the "Y" would be constant going into the calipers...H3ll, what do I know?? I'm an accountant...you should ask Roach or LarryG...
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post #5 of 11 (permalink) Old 02-21-2006, 06:40 PM Thread Starter
 
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so ummm...Roach? Larry G? you guys reading this??

haha. i dont know either of them, but i'd appreciate any input.

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post #6 of 11 (permalink) Old 02-21-2006, 08:40 PM
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When I went from the stock rubber lines on my 9R to SS braided lines... it went from a Y to 2 seperate lines stacked and I NEVER had a problem with un-even braking aka pull.




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post #7 of 11 (permalink) Old 02-21-2006, 09:24 PM
 
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Quote:
Originally Posted by bumblebee
It sounds like a good set up...providing they can be tuned together so one doesn't overpower the other...I can remember back in the stone age when I used to run dual point distributors in my 440 Super Bee and GTX and in my 426 challenger what a PITA if they weren't tuned together...
I remember when those cars were common. My friend had a 69' GTX with 440 4-speed, around 4.11 rear, and premium was $0.32. Yahoo! But speaking of multiple points, My 79 GS1000 came with dual points, and my 75 GT750 had three sets of points.
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post #8 of 11 (permalink) Old 02-21-2006, 11:10 PM
 
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Quote:
Originally Posted by 929_RUI
so ummm...Roach? Larry G? you guys reading this??

haha. i dont know either of them, but i'd appreciate any input.

PM or email either or both of them, they are both pretty quick to get you an answer one way or another.
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post #9 of 11 (permalink) Old 02-22-2006, 08:59 AM Thread Starter
 
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Quote:
Originally Posted by Gas Man
When I went from the stock rubber lines on my 9R to SS braided lines... it went from a Y to 2 seperate lines stacked and I NEVER had a problem with un-even braking aka pull.

what kind of lines did you get? and did you keep the stock master cylinder?

I was looking into getting spiegler SS lines, but I know there is some others out there.
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post #10 of 11 (permalink) Old 02-22-2006, 10:16 AM
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I got Goodridge SS lines. They were nice.

And yes I kept the stock master cyclinder.




-Chris
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Was: 2002 Kaw ZX-9R
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post #11 of 11 (permalink) Old 02-23-2006, 10:32 AM
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Splitting up top is common. Never had a problem with'em. I cant help you with the rest. Maybe Roach or Laura can.

Submit your ride for the TWF Bike of the Month here


Currently ride 1987 GSXR 50, 1996 Ducati M900, 2005 GSXR 1000
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