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Join Date: Jun 2003
Location: Glendale, CA
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2001 ABS Bypass

I recently acquired a '03 R1150GS Sport which has no ABS, and I find I MUCH prefer the feel of the brakes without the ABS trying to help me.

The one time I really wanted the ABS to help me on the S, the only result I could discern was that the brakes just went away, leaving me with more speed than I really wanted.

I was trying to scrub off a little speed on a bumpy corner entrance, and the ABS cut in when the front wheel got airborne over the bumps, and then did not come back on until the second bounce. A VERY scary moment indeed.

Is it possible to deactivate the ABS II on my bike? I was thinking of getting aftermarket brake lines and simply bypassing the ABS control unit by directly connecting the front/rear master cylinders with their respective calipers.

Any thoughts, flames, suggestions, etc?

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Old 12-18-2003, 02:53 PM
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Your money would probably be better spent getting your suspension set up properly. A set of Ohlins shocks will keep those tires in contact with the pavement much better than stock. I noticed that with the OEM shocks, I would sometimes get those unexpected ABS activations under hard braking on bumps. After I installed a set of Ohlins and got them dialed in, I never have had that problem again. The ABS only kicks in when needed or when I deliberately "test" it's operation.
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Old 12-18-2003, 06:12 PM
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BTDT on the Ohlins front & rear, and they are really great.

Maybe I need to do some more ABS testing.
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Old 12-18-2003, 06:24 PM
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I think some thread searching is in order. I thought there was the ability to turn on and off the ABS during startup. I'm sure it has been discussed before.
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Time Marches On: 2015 F800GS, 2010 F800GS, 2007 R1200S, 2003 Dakar, Buell 1125r, 2001 F650GS. 1999 F650. 1998 HD Sportster Sport. 2010 F150, 1995 GMC Sierra ALL GONE
Old 12-18-2003, 06:30 PM
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Hold your finger on the starter button whilst turning the key.
Put tape over the ABS blinkey lights.
Be careful®

jeff
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Old 12-18-2003, 06:36 PM
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I wonder if this turning off of the ABS will improve the soggy feel at the lever.
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Ride well. Ride safe. WEAR YOUR GEAR!
-Jack Price
Glendale, CA
03 BMW R1150GS
01 BMW R1100S (sold)
01 KTM Duke II (for sale)
Old 12-18-2003, 06:36 PM
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profWacko

Your scenario is exactly why I don't like ABS on a sporty type bike.

Curious did it make you change your line when it didn't slow as you would expect?

My feeling has always been there are more bumpy roads out there......... then the need for panic stopping...so I find the bad effects outweigh not Knowing how to use brakes = ABS


ABS = Almost Braking Substitute



go ahead I just put on the nomex
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Old 12-18-2003, 06:58 PM
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No, the soggy feel is from the pressure valves in the ABS Unit.
If it's rock hard brake feel you want, then ABS ain't gonna make you happy.
It will, however stop you just fine.
Either enabled or disabled..

jeff
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Old 12-18-2003, 08:04 PM
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Hey profWacko,
I’ve seen an S with the latest Integral ABS with bypass brake lines directly from the master cylinder. I‘m very sure one could do it on the ABS II version too (I'm not sure which one you have). I haven’t done this, but I’d guess that one could disable the ABS II by simply installing a larger spacer, or washer, under a wheel speed sensor to separate it far enough from the toothed-ring to fault the ABS computer. I wouldn’t do that with the power assist version simply because I wouldn‘t want power assist brakes without the ABS function.

On my ABS II equipped S, I tried the trick of holding the start button down, then turning the key to start it, robbing the ABS system of the voltage level needed to initiate. The ABS system faulted for a short distance, but it seemed to always correct itself.

MarkC
Old 12-19-2003, 12:58 AM
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profwacko
I raised the question a couple weeks ago also, how do I turn it off?

I believe someone said something about taking off right after start-up before the ABS has a chance to cycle.
Try that.

Joe

My last experience was when riding spiritedly and backing it into a 20mph turn after a short straight.
ABS kicked in and left me upright before the apex...in other words, I was no longer turning.
Scarey ****.
It's then I figured out the real drawbacks to ABS...

In retrospect, I had a get-off last year that I now attribute, at least partially, to that darned ABS kicking in.

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Old 12-19-2003, 09:40 AM
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