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AP Racing front master cylinder

 
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Paul



Joined: 27 Jan 2005
Posts: 182
Location: Utah

PostPosted: Wed Nov 02, 2005 2:30 pm    Post subject: AP Racing front master cylinder Reply with quote

Saw this in Cycle World, would be great for a HPS setup:

http://www.apracing.com/motorcycle/cylinder/data.asp?code=CP4325

It's a handlebar mounted brake master cylinder, but it has two completely separate circuits. For sport bike use you connect one to each of your front brake calipers - so that if you split a hose or have some other catastropic failure, you still have half of your front brakes.

(The same sort of safety is provided by some linked brake setups, but linked brakes and performance don't go together. Using this front master cylinder you can have redundant braking safety as well as independant non-linked braking safety).
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anderl



Joined: 19 Oct 2005
Posts: 27
Location: Munich Germany

PostPosted: Wed Nov 02, 2005 2:47 pm    Post subject: Reply with quote

thanks for the advice Exclamation

Anderl
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Anderl
www.gespannmeisterschaft.de - sidecar championship
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Bandit Bill



Joined: 31 Jan 2005
Posts: 202
Location: Hamilton, Ontario, Canada

PostPosted: Sat Nov 05, 2005 4:34 pm    Post subject: Reply with quote

Great.. I think you just added more to my project! Big Grin

In building up my spindle backing plate (so far, hand-cut out of a plate of 12"x8"x1/4" steel, glutton for punishment Laughing ) I see i got plenty of room to put in a Tokico 6 pot, or Nissin 4 pot caliper, in addition to the 2 pot rear brake i've already designed in. The thought is to tie in the 2 pot to the rear brake setup as is currently designed, and route the single Nissin 4 pot into the front Lockhart master cylinder..

Couple thoughts come to mind though, using it on a modified uneven a-arm suspension design, do i risk twisting the a-arms into a prezel around the rotational axis the first time I stomp on the binders front and rear? Am i better swapping the choice of calipers front/rear to 2 front - 4 rear, to limit any potential of the sidecar braking force overwhelming the steering control of the rig under heavy braking? Has anyone done a braking design for the sidecar involving dual braking similar to the madness i'm contemplating, that found it of benefit?

Thanks, now trotting down to the local bike shop to see if it can be sourced out.. Big Grin
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bmcsheehy



Joined: 22 Jan 2005
Posts: 975
Location: Massachusetts USA

PostPosted: Sun Nov 06, 2005 11:42 am    Post subject: Reply with quote

Hi Bill,
I use a floating single piston Caliper, and it is almost too much braking.
I think with the amount of brake you’re talking about, would constantly lock up the sidecar wheel.
Then if you add a proportining valve, you're not using all the braking anyway. So, why have it.
Under Construction
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Bill
High Performance Sidecaring... ...There is nothing "HACKED" about it.
2006 ZX-14 / HANNIGAN HP.
2011 Concourse / California Friendship III.
1936 Ford Fordoor Humpback
www.Yankee-Engineering.com
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Bandit Bill



Joined: 31 Jan 2005
Posts: 202
Location: Hamilton, Ontario, Canada

PostPosted: Mon Nov 07, 2005 3:09 am    Post subject: Reply with quote

bmcsheehy wrote:
Hi Bill,
I use a floating single piston Caliper, and it is almost too much braking.
I think with the amount of brake you’re talking about, would constantly lock up the sidecar wheel.
Then if you add a proportining valve, you're not using all the braking anyway. So, why have it.
Under Construction


Thanks for the advice, I think i'll hold off on what may be an un-necessary and potentially redundant project then.. It looked like a trick part to potentially include at the time. I'm gonna have enough issues with unsprung weight as it is i think Big Grin
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Homebrew '99 Suzuki Bandit 1200 / '88 Hannigan Comet
'78 Honda CT70 playbike
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