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Buell Motorcycle Forum » XBoard » Buell XBoard Archives » Archive through September 23, 2008 » Rear tire Grip under braking? « Previous Next »

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Dukedog
Posted on Sunday, September 21, 2008 - 08:21 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Any suggestions on getting better grip out of rear tire while under braking. 09XBScg keeps you to the front of the bike, shifting back in seat is not enough.Should I firm the front damping or soften the rear settings? Like some advise before I start changing my ride setting.
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Borrowedbike
Posted on Sunday, September 21, 2008 - 08:53 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Yeah, quit using the rear brake, except at stop lights and slow straight line stops.

Check out twist of the wrist II. Code explains it well, but any time you break a motorcycle the weight shifts to the front. This means less weight on the rear, which means a rear that is easier to lock up. As breaking becomes harder it is easier and easier to lock up the rear, beyond the slide, the loss of they gyro effect form the rotating mass is a very bad thing.
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Iamarchangel
Posted on Sunday, September 21, 2008 - 08:56 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Not sure of your question: are you using your front brake as well?

About 80% of your braking is done with the front so the rear is seldom used. At highway speeds, the rear alone won't do much.

Suspension settings aren't going to affect braking as much as braking will affect suspension.

Adjust the rear brake lever to be more accessible to your foot.

Set up a figure "8" on some parking lot and practice braking.
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Growl
Posted on Monday, September 22, 2008 - 12:36 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

The classic answer to the question is:
slide back in your seat, lean back and
pull slightly on the bars - the point is to shift weight towards the rear.
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Paint_shaker
Posted on Monday, September 22, 2008 - 12:38 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

I think I may have touched my rear brake 3 times in 2 days on the track. I would haul down from 125-130 to 70ish with nothing but the front brake and a downshift.
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Midknyte
Posted on Monday, September 22, 2008 - 12:47 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Reducing my rear compression damping a bit solved this for me
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Swordsman
Posted on Monday, September 22, 2008 - 09:45 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Yeah, funny one of you should ask if he's using the front brake. I've heard more than one person claim they NEVER use the front... all rear brake, or else you risk flipping. WTF!? Their stopping distance must be measured in football fields! I wonder if they were talking about bicycles...?

~SM
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Jlnance
Posted on Monday, September 22, 2008 - 10:24 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Hey Dukedog, there is some good advice above, but it's a bit spread out so let me summarize so it's all in one place. I don't know how much of this you already know, so forgive me if I'm telling you stuff you know.

1 - Most of your stopping power comes from the front brake.

2 - Weight shifts to the front of the bike when you stop (regardless of which brake you use.)

3 - As the weight shifts, it reduces the traction available to the rear wheel. In the extreme case, the rear wheel isn't even on the ground and has no traction at all.

4 - All this makes the problem you are describing common: the rear locks up under hard braking.

Rear wheel lockups are bad on a motorcycle. This is because the rear will fishtail, and if you unlock it when it isn't in line with the front, it can throw you over the bars (highside crash.) On the other hand, if you don't unlock it, you're fishtailing all over the place.

Most people's solution to these problems is to use the rear brake very little. It is good for holding the bike at stoplights, and in certain situations it can stabilize the bike going into corners. But if you want to stop fast and hard, you don't want much, if any rear brake.
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Dukedog
Posted on Monday, September 22, 2008 - 10:14 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Thanks To ALL!

Yes I use my front Brake for most of my riding, I will take all your advice and give it HELL.



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