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Mako
Posted on Sunday, April 29, 2012 - 01:23 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

rear caliper and master cylinder toast. rear tire locked up. luckily no flat spot or crash but... where are the recalls? Is brembo setup the best replacement?.
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Timebandit
Posted on Sunday, April 29, 2012 - 02:07 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

If you suffered a rear brake lockup that put you at risk of injury and/or rendered the bike unsafe, then you must take the time to file a complaint with the NTHSA. Talking about it here won't help. The only way to ever get something to happen is for everyone to file the reports with the proper agency. Unfortunately, most people skip filing the complaint, so nothing happens.

Recalls only happen when enough people file a report with the NTHSA. Unless that happens, the NTHSA doesn't get the data that they need to have justifiable cause to take action. The problem with our bikes is that our numbers are so small that nobody's going to worry about the problem unless they see lots of reports getting filed. Filing the reports is what it takes to get the wheels turning.

Please take the time to file yours today. This is where you need to do it:

https://www-odi.nhtsa.dot.gov/ivoq/

(Message edited by timebandit on April 29, 2012)
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Stirz007
Posted on Sunday, April 29, 2012 - 02:11 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Filing a report with NTHSA is probably a good idea. While you're waiting for the NTHSA to issue a recall, you may want to consider getting back on the road again. The Brembo is a good upgrade and not too spendy.
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Timebandit
Posted on Sunday, April 29, 2012 - 02:14 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

^^ he's right. probably a good idea to file a report, probably not a good idea to wait on the government agency to take action on your behalf. : p
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Smoke4ndmears
Posted on Sunday, April 29, 2012 - 02:29 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

glad you made it through the situation safely. several track days and some commuting on my brembo conversion and its fine!
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Torquehd
Posted on Sunday, April 29, 2012 - 11:02 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

glad you didn't crash.
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Mako
Posted on Monday, April 30, 2012 - 09:17 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

the first thing I did was file a report. I wish more people have as most other companies having problems like this issue a recall.HD must have a lot of good lawyers. love the bike though.
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Reepicheep
Posted on Monday, April 30, 2012 - 09:21 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

How did it fail? Did you apply it and it just didn't un-apply? Did it lock up out of the blue while you were riding?
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Rogue_biker
Posted on Monday, April 30, 2012 - 11:59 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I'd like to know too.

My 1125R's rear brake seized and it overheated the rear brake rotor back when my buddy owned it and he admitted to NEVER using the rear brake.

I use the rear brake every time I ride. So far no problems after 12k miles. I do notice the rear brake is slippery after the morning start up due to condensation and soot from a cold engine exhaust gets on it. After that it works well.

I have OEM rear brake caliper, pads and rotor.
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Reepicheep
Posted on Monday, April 30, 2012 - 12:26 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

About all I could think of that would cause a spontaneous lockup would be moisture in the system, and a dragging brake, leading to spontaneous boiling.

So perhaps a simple preventative maintenance task of changing the rear brake fluid at yearly intervals (which we should probably be doing anyway) would solve the problem.
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Stirz007
Posted on Monday, April 30, 2012 - 12:36 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

The reported 'rear brake sieze' problem seem to be related to one or all:

1 - Too much fluid in reservoir - brake gets hot in use, not enough room for brake fluid expansion, brake locks up.

2 - Exhaust soot and brake dust accumulate, caliper not cleaned (ever) and caliper gets gummed up to the point that the pistons can't retract properly and drag or lock.

3 - Not so good caliper

Annual bleed and replace fluid a good idea in any case.

Symptoms and Results may vary......

(Message edited by stirz007 on April 30, 2012)
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Pwillikers
Posted on Monday, April 30, 2012 - 12:38 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I had the same thing happen to me. The rear brake started dragging after use. Fortunately, it coincidentally howled so I pulled over immediately and opened the bleeder. Fluid spewed about but I was able to manually push the pads back into the caliper and continue on my way being careful to not touch the rear brake for the rest of the ride. I caught it quick enough so no damage was done to the rotor. HD replaced the rear caliper under warranty.

I admit to being a rider that rarely uses the rear brake. I really only to drag it for tight u-turns. I am now trying to use it more often in hopes that more frequent exercising will preclude a similar malfunction.

I've wondered if the rear caliper gets fouled by exhaust gas deposits causing it to stick. Any one with the custom muffler "turnout tips" have this problem? If no, that might be further evidence.

I'll file an NHTSA report.
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Rogue_biker
Posted on Monday, April 30, 2012 - 02:01 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

A good yet simple way to know is to poll those who've had rear brake seizure and ask them how often they use the rear brakes.

i figure if it's there, it's meant to be used so I use it. Also, the rear brake does stabilize the bike during braking so it's all good to me.
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Froggy
Posted on Monday, April 30, 2012 - 02:02 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)


quote:

I admit to being a rider that rarely uses the rear brake.




I've always personally suspected this to be a cause of the issue. I have two 1125s, one with a completely stock exhaust, one with a KEDA pipe, both bikes are ridden the same way, same conditions, and both have around 20k miles on it, I use the rear brake quite a bit, still on original pads and never had any brake related issues.
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Syonyk
Posted on Monday, April 30, 2012 - 03:19 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I'm on my 2nd set of rear pads (and 2nd set of front pads) with around 35k miles, and the rear brakes work just fine, no issues. I do admit that they could use a good bleeding...

I usually use the rear brake to finish stopping for normal stops so I don't have a hot front pad stopping pressed against the rotor depositing material. Also it helps stabilize the bike as noted - the bike doesn't feel as solid with pure front brake use on the street.
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Smoke4ndmears
Posted on Tuesday, May 01, 2012 - 09:17 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

also, getting a return spring for the MC can helps. something like this:

http://www.gravesport.com/Graves-Motorsports-Sport -Bike-Rear-Brake-Return-Spring.html
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Mako
Posted on Tuesday, May 01, 2012 - 09:41 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

the caliper stuck once and I pried the pads back. About an hour later I forgot and applied them again and they locked up. Went home and removed caliper sprayed lubricant on pistons. I had to push so hard on master that it blew and pistons still didn't budge?
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Ogobracing
Posted on Tuesday, May 01, 2012 - 10:15 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

also, getting a return spring for the MC can helps. something like this:

http://www.gravesport.com/Graves-Motorsports-Sport -Bike-Rear-Brake-Return-Spring.html


Do you know if that spring or of any other that properly fits?
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Captain_america
Posted on Thursday, May 03, 2012 - 02:31 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Wish I could lock my rear break up that easy lol.

I use mine all the time and never have had an issue. 2nd set of pads, 24k miles.
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