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Thread: Magura handlebar master cylinder on my /6

  1. #1
    P Monk
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    Magura handlebar master cylinder on my /6

    Now that the project is complete I will post some pictures I took during the project and will do a short commentary on it. First I got the idea from a fellow in Australia on the old Boxerworks forum. I bought the throttle and brake assembly a couple of years ago in case I ever wanted to do this. Went out in the garage and found a big puddle of brake fluid on the floor so why not?P1120096 (2).jpg
    P. Monk
    74 R90/6 (the Black Hole) Harvey couldn't kill it. . 09 R1200 GS, drowned in Harvey replaced by 2011 R1200RT. Wife, 1953 model survived aplastic anemia and a bone marrow transplant.

  2. #2
    P Monk
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    Magura master cylinder

    First job is to shave off the brake lever. Did this with Dremel cutting off just at the holes for the mirror and the brake leverP1120098 (2).jpg
    P. Monk
    74 R90/6 (the Black Hole) Harvey couldn't kill it. . 09 R1200 GS, drowned in Harvey replaced by 2011 R1200RT. Wife, 1953 model survived aplastic anemia and a bone marrow transplant.

  3. #3
    P Monk
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    Magura master cylinder project

    Next, I filled in the void with liquid metal and filed and sanded smooth. Then painted with flat black paintP1120111 (2).jpgP1120111 (2).jpg
    P. Monk
    74 R90/6 (the Black Hole) Harvey couldn't kill it. . 09 R1200 GS, drowned in Harvey replaced by 2011 R1200RT. Wife, 1953 model survived aplastic anemia and a bone marrow transplant.

  4. #4
    P Monk
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    Magura master cylinder project

    Mounted master cylinder and throttle assembly.P1120124 (2).jpgP1120127 (2).jpg
    P. Monk
    74 R90/6 (the Black Hole) Harvey couldn't kill it. . 09 R1200 GS, drowned in Harvey replaced by 2011 R1200RT. Wife, 1953 model survived aplastic anemia and a bone marrow transplant.

  5. #5
    P Monk
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    Magura master cylinder project

    Installed Galfer brake hose, 42" but could have been an inch or two longer
    . Also wish I had gotten the hose in black.P1120155.jpgP1120157.jpg
    Last edited by dpmonk; 03-04-2017 at 07:19 PM.
    P. Monk
    74 R90/6 (the Black Hole) Harvey couldn't kill it. . 09 R1200 GS, drowned in Harvey replaced by 2011 R1200RT. Wife, 1953 model survived aplastic anemia and a bone marrow transplant.

  6. #6
    P Monk
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    Magura master cylinder project

    View from the saddle of my very dirty bike. A little additional info: the master cylinder is a Magura 225.2 M0222000. I would like the brake to feel a little firmer, it does feel slightly mushy, and takes a lot of lever pull (distance) , however It does not bottom out. The braking is very much improved. Stopping while normal riding is effortless, I don't have to stomp the rear brake and pull with all my might to come to a quick stop. I am not sure I can easily lock up the front wheel, but it is a dramatic improvement. My bike is a rider. It is not a show bike by any means, and I understand that a lot of people want to keep everything stock, and I have all the original parts to return it to stock If I ever wanted to, but I know I never will. It is too much fun riding. P1120160.jpg
    Last edited by dpmonk; 03-03-2017 at 02:40 PM.
    P. Monk
    74 R90/6 (the Black Hole) Harvey couldn't kill it. . 09 R1200 GS, drowned in Harvey replaced by 2011 R1200RT. Wife, 1953 model survived aplastic anemia and a bone marrow transplant.

  7. #7
    Nice work! I always wanted to do something similar with my airheads.
    '61 Clubman's Gold Star, '13 690 Duke, '13 Daytona 675R, '14 Street Triple R, '17 1290 GT (gone but not forgotten: '76 R75/6, '84 R100, '76 R90S)

  8. #8
    Registered User lkraus's Avatar
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    Quote Originally Posted by dpmonk View Post
    Installed Galfer brake hose, 42" but could have been an inch or two shorter.
    Would the "excess" length go away if you used the stock brake line routing?

    bmw_r90_6_1974-12516.jpg
    Larry
    2006 R1200RT

  9. #9
    P Monk
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    correct routing

    Yes I think it would. I measured with some line trimmer string going the stock route, but the master cylinder is a lot closer to the instruments and would have made a pretty tight turn to get under the tank. In the future I may decide to re-route the line for a better look. By the way, the cost was $106 for master cylinder and brake switch and about $70 for the brake line.
    P. Monk
    74 R90/6 (the Black Hole) Harvey couldn't kill it. . 09 R1200 GS, drowned in Harvey replaced by 2011 R1200RT. Wife, 1953 model survived aplastic anemia and a bone marrow transplant.

  10. #10
    P Monk
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    You are right

    Quote Originally Posted by lkraus View Post
    Would the "excess" length go away if you used the stock brake line routing?

    bmw_r90_6_1974-12516.jpg
    I ordered a 42 but think it was actually 43". After rerouting the hose It could have been a little longer. 44" would probably work.P1120163.jpg
    P. Monk
    74 R90/6 (the Black Hole) Harvey couldn't kill it. . 09 R1200 GS, drowned in Harvey replaced by 2011 R1200RT. Wife, 1953 model survived aplastic anemia and a bone marrow transplant.

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