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Tribalreaper
Posted on Wednesday, June 05, 2019 - 01:20 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

What is the best up grade for the rear master cylinder?
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Stimbrell
Posted on Wednesday, June 05, 2019 - 02:43 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I am genuinely interested in why people ask this about a sports bike, What are you looking to upgrade? What do you want it to do differently? A sports bike has a front brake that can lift the rear wheel off the ground, the back brake is basically a parking brake, I have seen riders doing stunts using it to control a wheelie and recently been told some use it to perform a controlled U turn ala LEO, but apart from that what is it you want to improve?
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Nuts4mc
Posted on Wednesday, June 05, 2019 - 06:41 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

an old post with P/Ns and pix...hth
http://www.badweatherbikers.com/buell/messages/290 431/767668.html?1438829847
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Fresnobuell
Posted on Wednesday, June 05, 2019 - 10:21 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I would forego the rear master cylinder (if still functional) and put the Brembo caliper on. That will improve things a bit....then spend the rest on the Buelltooth quickshifter!
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Shoggin
Posted on Thursday, June 06, 2019 - 12:37 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

If you go one size smaller on the rear MC bore, you will happily get rid of the stock wooden-feeling brake pedal and have a progressive and MUCH more effective rear brake.

The Brembo P32 caliper has a a piston area that measures slightly larger netting the same effect, but not to the degree the MC swap does. I HIGHLY recommend it. $30 upgrade
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Stimbrell
Posted on Thursday, June 06, 2019 - 10:50 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Perhaps I am wrong on this, I did not notice any difference when I changed to the Brembo caliper but for the sake of $30 I am going to give it a go and see. What size mc do I need?

This guy did the conversion and says the brake felt the same.

http://www.badweatherbikers.com/buell/messages/290431/634669.html

"Buying the master from Brembo seemed like a nice upgrade, and easy to get. I'll admit that I replaced the caliper just for the cool factor. Honestly the brake feels just like it did before, go figure."

Perhaps he used a larger mc?

(Message edited by stimbrell on June 06, 2019)
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Fresnobuell
Posted on Thursday, June 06, 2019 - 11:41 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Changing the caliper will not do any miracles. I don't use the rear brake much so it doesn't matter a whole lot to me personally. It's marginally better IMHO and still feels wooden. My main objective was to get rid of a dragging rear stock caliper and at least I can use the Brembo without worrying if it's going to drag or not. That's good enough for me.
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Stimbrell
Posted on Thursday, June 06, 2019 - 12:49 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I only changed the caliper because the brake pads are so much cheaper and widely available for the Brembo. I just priced up the mc change and it is north of $120 so far so unless I can find a used mc I will not be doing it, not worth it just to satisfy my curiosity.
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