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Thread: Motor Trike Rear additional brake caliper upgrade - what master cylinder to use?

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    Default Motor Trike Rear additional brake caliper upgrade - what master cylinder to use?

    I see from a few posts on here that folks have fitted additional rear brake calipers to their MT and prob a few other machines too!

    So question is - what large rear master cylinder did you use? Obviouslt stock one will not work and you now have doube or more the piston volume to move?

    Ours is a 08 Goldwing GL1800 and someone put VW Golf GTi rear calipers with hand/parking brake function then fitted and addition 2 x 4-pot calipers for good measure. Result = NO rear brake - piston bottom on in master cylinder before it can move enough fluid.

    As a gues as the oem m/cyl is 11/16" / 17.5mm it needs to go up to either a 19mm or better still a 22mm bore cylinder - again preferabley another Nissin unit but strugling to find one.

    Anyone help?

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    3/4 and 7/8 are popular and should be available

    For reference, 19 mm=.748 or 3/4 of a inch and 22mm =.864 or 7/8 of a inch.

    You may also try a residual check valve in line, unless you already have one
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    Quote Originally Posted by Jack Klarich View Post
    3/4 and 7/8 are popular and should be available

    For reference, 19 mm=.748 or 3/4 of a inch and 22mm =.864 or 7/8 of a inch.

    You may also try a residual check valve in line, unless you already have one
    Sure did help my rear brake feel on our Lehman with drums. I used a 10 psi one because drums have return springs.
    Make Courtesy Your "Code of the Road" too!

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