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post #1 of 38 Old 06-18-2011, 10:55 AM Thread Starter
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ABS Question

Preamble

The bumper of my Van is a little twisted from hitting the rear end of a pickup..

My Van ABS PREVENTED the truck from stopping. One caliper jamed so it wouldn't slow that wheel. The ABS PREVENTED the other wheel from applying its brake. Fortunately the rears slowed us enough where it wasn't a big deal....

so

If your bike is on REAL slippery surface can you stop at all or will it just coast into whatever is in front of you. If the wheel wanted to slip everytime it tried to stop would it just keep going?

I certainly believe that our car ABS definitely INCREASES the stopping distance of my cars in slush etc.
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post #2 of 38 Old 06-18-2011, 11:04 AM
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Congratulations. You have just found out why I absolutely refuse to have ABS on a bike. I've had that happen to me far too many times in a car to even consider having ABS on a bike.

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post #3 of 38 Old 06-18-2011, 11:11 AM
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Quote:
Originally Posted by richw View Post
If your bike is on REAL slippery surface can you stop at all or will it just coast into whatever is in front of you. If the wheel wanted to slip everytime it tried to stop would it just keep going?

I certainly believe that our car ABS definitely INCREASES the stopping distance of my cars in slush etc.
Yes ABS increases stopping distance... if you engage it.

The flipside is it lets you stay upright - if you break traction without it on two wheels how are you going to stay upright?

If you can brake without slipping you won't engage it, but I'd imagine that's pretty hard on a surface as slippery as you're talking about. Thing is, on a surface that slippery stopping at all is going to take a long time and even cornering will be a problem, so ABS will be the least of your worries.
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post #4 of 38 Old 06-18-2011, 11:51 AM
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A jamming caliper is a maintenance issue. In well over 40 years of bike and car miles, I've never had a brake maintenance issue.

Pat- 2007 DL650A was ridden to all 48 contiguous states. I didn't quite make it to 17,000 miles on the 2012 DL650A.
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post #5 of 38 Old 06-18-2011, 11:52 AM
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When applying the rear brake, hoping to slow your descent down a steep hill with a loose dirt or gravel surface, ABS works against you.
Great for pavement; off road not so much.
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post #6 of 38 Old 06-18-2011, 12:12 PM
 
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Yea! another ABS debate!

No Wheelies Here: Why you need ABS

I used to find these discussions fun, but in reality there are two camps on this subject, and no one is changing tents.

Last edited by darkjedip; 06-18-2011 at 12:24 PM.
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post #7 of 38 Old 06-18-2011, 02:11 PM
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Quote:
Originally Posted by richw View Post
The ABS PREVENTED the other wheel from applying its brake. Fortunately the rears slowed us enough where it wasn't a big deal....
It wasn't a big deal because of the ABS.

The ABS prevented your van from piroutting on the one locked front wheel.

Don't blame a safety feature for a lack of maintenance on your part.

The answer to you question is a matter of degrees and is directly related to tha amount of available traction. For the vast majority of riders, the ABS will keep a bike upright while stopping the bike safely when there is little or no traction for braking. Yes, your stopping distance will be greater because you're using the little bit of traction available to the relatively small contact patches of the tires intead of the much greater drag of handlebars and footpegs digging into the asphalt.

However, rear-ending another vehicle because you failed to maintain a safe following distance for conditions is always the ABS's fault.

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Last edited by Stromin'Nroman; 06-18-2011 at 02:13 PM.
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post #8 of 38 Old 06-18-2011, 02:16 PM
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Rubber on the road has better traction than handlebars and footpegs. Every time somebody drops a bike by locking the brake, usually a rear lock often followed by a brake release and high side, and doesn't have the bike slide into the obstacle, I know a proper braking job would have saved the day. A proper job of braking will stop the bike way faster than dropping it will.

Pat- 2007 DL650A was ridden to all 48 contiguous states. I didn't quite make it to 17,000 miles on the 2012 DL650A.
Nicknames I use to lessen typing, Vee = 2002-2012 DL1000s. Vee2=2014-2016 DL1000s. Wee = 2004-2011 DL650s. Glee = 2012-2016 DL650s
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post #9 of 38 Old 06-18-2011, 03:09 PM
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The laws of physics/friction. A rolling tire has more friction than a sliding tire. (that is why it's still rolling) It will therefore, decelerate/accelerate better, and change direction better. This can be untrue on a soft surface where the sliding tire can dig into the surface and create a larger friction patch plus dislodging the actual surface which increases friction.

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post #10 of 38 Old 06-18-2011, 03:32 PM
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Quote:
It wasn't a big deal because of the ABS.

The ABS prevented your van from pirouetting on the one locked front wheel.
+1

ABS isn't for shorter stopping distances. It is for control. With 4 wheels, it allows some steering (or keeping straight) while braking at the max. With 2 wheels, it may help keep you upright if you aren't turning (if you're turning and hammer the brakes, you're doomed no matter what). The ABS system can determine changes in road traction much faster than I can and adjust the braking level for that. Yes, ABS needs to be switched off for downhill on loose stuff.

"Older people who are reasonable, good-tempered, and gracious will bear aging well. Those who are mean-spirited and irritable will be unhappy at every period of their lives.

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