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Greg_e
Posted on Thursday, March 18, 2010 - 12:58 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

OK, so is the rear brake on this machine just plain way too small with way too small a master cylinder? I just put in a pair of EBC Black pads and if I push extremely hard I can sometimes get the back wheel to lock. In short I get more braking from the engine coasting down than the back brake. Do I have a problem on the brake or is it really just that weak?
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Froggy
Posted on Thursday, March 18, 2010 - 01:09 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Make sure your line is bled and has fresh fluid. Other than that, the brake pads probably need to be broken in. If that still isn't enough, the Lyndal Gold pads work fantastic, my XB locks it way to easy with them.
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Sloppy
Posted on Thursday, March 18, 2010 - 01:10 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Rear brake is designed that way.

Buells are among the best braking bikes in the world so I wouldn't mess with success...

Compare Buells to other sport bikes:

ref: Motorcycle Consumer News (http://www.mcnews.com/mcn/articles/2010JanIndex.pd f)
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Firebolt020283
Posted on Thursday, March 18, 2010 - 01:29 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

sloppy which bikes are you comparing it to?

Looking over that sheet and comparing it to the bikes on that sheet the buells did not do too hot on the 60 to 0 times.
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Firebolt020283
Posted on Thursday, March 18, 2010 - 01:31 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

except the cyclone which had really good numbers in that area.
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Chessm
Posted on Thursday, March 18, 2010 - 10:38 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

so i guess you discovered the buell's antilock rear brakes? pretty spiffy huh?!
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Greg_e
Posted on Thursday, March 18, 2010 - 11:23 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

I'll have to do the fluid today and see if that makes a difference. I've had the EBC black pads on my old Katana and they pretty much sucked until they got hot, but even so if I mashed the lever it would lock the rear wheel. I'm finding that I need to put way more pressure on the lever than any other cycle I have ever ridden, to the point where I think it is beyond excessive and I'm wondering if the caliper or master is bad. When I changed the pads it was pretty clear that they had never been changed from stock so I have a feeling the previous owners never used it. I like the brake to work because I can use it to relax my hands when coming to a stop and when stopped on a hill. It currently only holds on a hill when I press real hard.
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Sloppy
Posted on Thursday, March 18, 2010 - 12:13 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Fire:

Compare the Buells to other "sport bikes".
{feet to stop from 60mph - 0}
Buells - 115 - 130
R1 - 130 - 145!
CBR1000 - 135 - 143!

Sure there are better braking bikes, but when you compare them to bikes that are seen as "performance" bikes, Buells compare quite well.
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Gunut75
Posted on Thursday, March 18, 2010 - 03:18 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Yup, pull the little master cylinder, take it apart and clean it out. I have never understood why my rear brake works so well, and most others dont. I have great feel, no "wooden" feeling, and with a little more pressure, I dont have any problems locking up the rear. Weird. I have everything from the factory, except the brake pedal, on it too.
If the master cylinder is good, next check for a bad piston in the caliper. If those are good, check for obstruction in the line.
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Northernyankee
Posted on Thursday, March 18, 2010 - 03:47 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

I ditched the stock rear caliper and put a Brembo back there with a Dark Horse Moto bracket and its a night and day difference.
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Rsh
Posted on Thursday, March 18, 2010 - 04:19 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Sloppy, are you looking in the correct column. You listed the 1/4 mile speed

Worst of the CBR1000RR's listed is the 08. 60mph to 0 is 122.8 feet.

The worst of the R1's listed is the 07.
60mph to 0 is 117.9 feet.

Some of the numbers for the Buell's in the referenced article do not look great.

XB9R 60 to 0 is 125.7
1125R 60 to 0 is 133.53
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Sloppy
Posted on Thursday, March 18, 2010 - 04:36 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Ooops. Maybe I should zoom in on those table documents. DOH!
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Azxb9r
Posted on Thursday, March 18, 2010 - 05:13 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

If you squeeze the front brake lever hard enough, the rear wheel will lighten up and allow the rear brake to lock quite easily

I heard it was made weak on purpose to avoid rear wheel lock-up.
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Greg_e
Posted on Thursday, March 18, 2010 - 06:31 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

The stuff that came out was the color of honey.

ANd do not under any circumstances allow the front to run dry while you are doing this, getting the bubbles out is a huge pain in the @$$. For a while I thought I was stuffed until I could get out and find a vacuum bleeder device. Finally managed to get all the air out.

The back is better and I'll try and work the pads in next time I ride it and see if things get better.
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