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Narrow opposed piston caliper?

This is a discussion on Narrow opposed piston caliper? within the Technical forums, part of the Caferacer.net Forums category; Lads, can anyone think of the narrowest opposed piston caliper at all? Clearance issues even with my disk spaced out with only 1mm till it ...

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  1. #1
    Senior Member Big Bad Bob Dog's Avatar
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    Narrow opposed piston caliper?

    Lads, can anyone think of the narrowest opposed piston caliper at all?

    Clearance issues even with my disk spaced out with only 1mm till it would hit the glide.

    Found an early GSXR1100 4 piston unit to be one of the slimiest, but would need to shave off a few mm, and unfortunately this would mean the transfer port. So no no.

    Was looking at those sexy r1, r6, yamaha everything 4 piston bastards with the removable caps on the outside, designed to take the pistons out that way.



    Unfortunately there isn't a shitload of thread for these caps, and if I were to mill these down I'd just ruin them.

    Fark. Fark. Fark. I do not want to put a lazy side caliper on this thing.

    Spitballing would be appreciated muchly. Off to the wreckers once again...
    That's like, your opinion, man.

  2. #2
    Senior Member hillsy's Avatar
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    Possibly the 6 piston calipers off a ZX6/9 would be thinner (due to the smaller pistons), but you'd have to line it up to see.

    I think you're screwed to be honest.....unless you get a larger diameter disc to move the caliper away from the wheel hub....

  3. #3
    Senior Member hillsy's Avatar
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    Possibly the 6 piston calipers off a ZX6/9 would be thinner (due to the smaller pistons), but you'd have to line it up to see.

    I think you're screwed to be honest.....unless you get a larger diameter disc to move the caliper away from the wheel hub....

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  5. #4
    Senior Member bmartin's Avatar
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    This is one reason doing custom brakes is such a bitch. Getting round holes to fit square pegs is part luck and part "I planned it that way". I don't have a solution for your problem, maybe getting the bike to completion and rideable with the stock brakes on it would be the area I would focus on.

    Without seeing all the pieces together it's rather difficult to envision the area that your having a problem with and coming up with a possible solution. There may be a possible solution with a custom bracket for the caliper but I'm sure you have a few pints thinking through that. Any possibility posting a picture with the pieces together so we can sit back and say shitz ourselves????
    Bob - Palmyra NY
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    1 - 71 CB750

  6. #5
    Senior Member bmartin's Avatar
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    This is one reason doing custom brakes is such a bitch. Getting round holes to fit square pegs is part luck and part "I planned it that way". I don't have a solution for your problem, maybe getting the bike to completion and rideable with the stock brakes on it would be the area I would focus on.

    Without seeing all the pieces together it's rather difficult to envision the area that your having a problem with and coming up with a possible solution. There may be a possible solution with a custom bracket for the caliper but I'm sure you have a few pints thinking through that. Any possibility posting a picture with the pieces together so we can sit back and say shitz ourselves????
    Bob - Palmyra NY
    2 - 69 CB750, 1 Turbo
    1 - 71 CB750

  7. #6
    Senior Member Big Bad Bob Dog's Avatar
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    Disk is far as it will go before it will hit lugs unfortunately.



    I'll have a look sir. Thanks.



    That's like, your opinion, man.

  8. #7
    Senior Member Big Bad Bob Dog's Avatar
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    Disk is far as it will go before it will hit lugs unfortunately.



    I'll have a look sir. Thanks.



    That's like, your opinion, man.

  9. #8
    Senior Member Big Bad Bob Dog's Avatar
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    I'll take more photos tomorrow sir Bob. I would be making a custom bracket for whatever caliper I'd be wacking on anyway, using the lugs for the fender mounts and the bottom fender rail mount.
    That's like, your opinion, man.

  10. #9
    Senior Member Big Bad Bob Dog's Avatar
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    I'll take more photos tomorrow sir Bob. I would be making a custom bracket for whatever caliper I'd be wacking on anyway, using the lugs for the fender mounts and the bottom fender rail mount.
    That's like, your opinion, man.

  11. #10
    Senior Member craig641's Avatar
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    Maybe a set of custom triple trees to make the forks wider?

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