ABS Recall???

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dallara

ABS, Linked Brakes, Servos...

Post by dallara »

Wow!

Another wonderful thread on ABS, linked brakes, and servos...

Who would'a thunk it! :lol: :lol: :lol:

Put me down in the pro-properly trained and practiced braking before all else category...

It never ceases to amaze me how many people prefer relying on some sort of "system" to save them rather than take the time to learn proper braking techniques at the limit... What's next for riders like that? Do you want BMW to computer-control your throttle application and cornering inputs for you, too?

Just where, exactly, does one draw the line between an individual actually *RIDING* the motorcycle and becoming a no more than a passenger?

No offense intended to those making some of the following statements, but come on...

Ones like:
In hard braking on a rough surface, the ABS has been known to fully release and let the bike coast, at least briefly. This has happened to me twice on rough San Francisco streets. I don't particularly consider it dangerous but I know it can happen.
Hmmmm... You are applying the brakes, but because the computer-controlled, servo-assisted, BMW thought-managed braking gets *confused* you are suddenly left with less than full braking capability, even if you wanted it, and it is *NOT DANGEROUS*?

What exactly would it be then?

And then there's this one:
When I'm filtering in trafic on the way to work. I cover the rear brake because my hands are busy with the controls. And I could never get on the front brake quick enough.
A couple of things here...

If you are lane-splitting and "filtering" and you don't already have two fingers *covering* the front brake you are greatly increasing your risk factor. In fact, riding in any heavy traffic situation without *covering* the front brake lever is a recipe for disaster sooner or later...

Your hands are busy with the controls???

Are you saying you cannot work the throttle and the front brake simultaneously? If that's the case you need to learn... It is pretty essential for proper downshifting and corner entry technique, and is one of the most basic skills for operating a motorcycle safely.

Properly practiced braking techniques will assure you can easily get to the front brake "quick enough". Your first two fingers on your right hand are much faster reacting than your right foot and leg. Don't believe it? Try Google...

And then there's this one:
I MUCH prefer the option of a fully linked front and control of the rear-brake-only via the peddle. On the other hand, a peddle operated fully-linked with the front-brake-only option (like my old Moto Guzzi) would be cool! Or the option of turning it off altogether would be nice too!!!

Wouldn't it be sweet if BMW could give us what H&K introduced in it's semi-autos?

With regard to servos, let's just say my ignorance has been the source of my bliss. My servos NEVER revealed themselves to me as grabby, touchy, noisy, annoying, etc.
To be quite frank, Pat, I am surprised... Somebody with your mileage on bikes, and the variety of bikes you have owned, preferring any sort of linked braking system baffles me... particularly if you like to ride fast. One of the greatest things about motorcycles is being able to have full capability of modulating between front and rear brakes at your own discretion. That is unless you honestly believe that some engineer in Germany, who has never met you or ridden where you ride, knows far better than you all the varying conditions you might encounter in your riding experience...

And if you never noticed the servos then I have to conclude you either didn't ever use the brakes on any of your bikes *HARD*, or either never had a bike with decent brakes. I think even the majority of the pro-BMW Servo-Assist ABS faithful would freely admit that the system is hardly *transparent* by even any wild stretch of the imagination... :-k

But leave it to the Darth-Man (Dave) to fully grasp the situation, and put a logical conclusion so concisely with:
Hmmm...seems like coasting when you need to be braking would be dangerous by definition.
Yep, Darth... Coasting when one wants (or needs) to be braking seems pretty risky to me, too! :lol: :wink: :lol: :wink: :lol:

Moving on... Again, I mean no offense when commenting on some of these statements, but I had to actually *LAUGH* out loud at this one:
On the rough surfaces in question, when wheel hop locks the front, it's a choice of losing braking for a short period, or going down.
For *WHO*, exactly??? :roll:

35 years riding motorcycles, and racing them 22 of those, and *NOT ONE TIME* has such an occurence of wheel chatter, wheel hop, or even locking the front wheel ever happened to me and caused me to go down or lose control... Of course, I firmly believe in practicing, practicing, practicing, practicing, and even practicing some more at proper riding and braking techniques, and I even used ot teach 'em!

So I ask again... For *WHO*, exactly? Have you actually experienced "going down" due to such an occurence, or are you guessing?

Please folks... Chime in if you have actually crashed due to such occurences, but otherwise... Well...

I don't *mind* a properly engineered ABS system - i.e. one that is completely transparent, non-linked, and not *over-programmed* to actually remove braking capability even if the rider decides he needs it - but a servo-assisted, linked system that can actually have you coasting on some some surfaces is not the answer.

Remember, even a locked wheel has more retardation going on than a freely rolling one, and it's the responsibility of the *RIDER* to learn how to keep the bike upright with either wheel locked.

One quick question for those proponents of Beemer's servo-assisted, linked, ABS systems - Are you interested in actually learning proper braking techniques, or would you simply prefer not to learn to ride proficiently and leave the control aspects of the motorcycle to BMW?

Cheers!

Dallara
Last edited by dallara on Fri Sep 02, 2005 6:12 pm, edited 1 time in total.
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Re: ABS, Linked Brakes, Servos...

Post by rdsmith3 »

Dallara wrote:Wow!

Another wonderful thread on ABS, linked brakes, and servos...
So, Dallara, how about those Cowboys -- 3-1 in the pre-season. But they'll never catch the Eagles. Or are you a Houston fan? You never know with them. :D
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dallara

Hey, RD...

Post by dallara »

Hey, RDSmith3...

You wrote:
So, Dallara, how about those Cowboys -- 3-1 in the pre-season. But they'll never catch the Eagles. Or are you a Houston fan? You never know with them.
Cowboys have a season now? And they try to catch Eagles instead of roundin' up cattle? Wow, I didn't know that... :lol: :lol: :lol:

As for Houston... I was born there, and spent a lot of time there, but it is not my favorite Texas locale (no offense to you Houstonians... :wink: ). Just too big and too crowded... And now the Astrodome, which used ot host such fine events as the Astrodome AMA TT and Short-Track Nationals and AMA Supercross, is being used for a refugee hotel...

To tell the truth, RD... If it don't have wheels on it and go fast, I don't keep up with it. Played some "stick-n-ball" sports in my youth, but once I found gasoline, rubber, RPM, and velocity all those other "sports" just seemed to pale by comparison...
:lol: :lol: :lol: :lol: :lol: :lol: :lol:

Cheers!

Dallara
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Post by Lance1150 »

I'm soooooooooo glad my bike didn't have ABS!

P.S. Hopefully most of us here DO go out and take the time to practice braking under difficult situations, so we know how it feels and what to expect BEFORE we're knee-deep in it. I'll go out this weekend and wear some rubber off my Avons and lock some wheels... it's an eye opener for those who haven't done such practice.

Thanks for all your thoughtful recapping Dallara.
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Dam ABS

Post by airmail351 »

Hello boys ... my R had no ABS .. didn't want it , and no problem.. then I bought a K1200LT... had no choice then... 6500 miles later went zipping past my road... NO ABS.... ABS modulator faliure... I agree with Dallara.. I am 43 and still racing motocross and do believe in practicing good riding habits. I do not need or will have ABS on my next bike.... unless of course that bike's residual braking is as strong as a non-ABS model. I believe you should not sell a motorcycle with such poor ... (and that is being generous)....residual braking.
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Post by NoRRmad »

Dallara --

I don't have ABS, and yes, I have gone down due to front wheel lockup.

It was early Spring and I was cruising through a small town in New York State, and came to an intersection. I was going about 15 MPH when a Harley decided it was his turn to go through the intersection and pulled out in front of me. I just tapped the front brake; piece of cake, I was going so slow that I was sure I could stop in time. BANG! I was on my side and the bike scraped to a stop in front of me. Everybody came running. Somebody tried to hit the kill switch, but engaged the starter instead. The Harley rode around my body lying in the road and puttered up the hill and out of sight.


Lying there, I ran my hand over the asphalt. It felt like there was soap on it. Glad I was wearing my armored Roadcrafter; the ribs felt OK after a few weeks, but no other damage.

Sometimes the bear eats you.
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Re: ABS, Linked Brakes, Servos...

Post by morrie »

Dallara wrote:Wow!

Another wonderful thread on ABS, linked brakes, and servos...

Who would'a thunk it! :lol: :lol: :lol:

Put me down in the pro-properly trained and practiced braking before all else category...
Dallara,

I could have written it a little better about the skipping brakes. The release I experienced was very brief and didn't cause any problem, but I suppose it could in other circumstances.

I practice braking a lot, and at the ERC I recently took, other riders were impressed with the way I cold stop the Beemer without activating the ABS. In fact, in the 25,000 miles I have ridden the ABS bike, I have only had it engage once, and that was on dirt. (Unless you count the skipping stop.)

If I had your skill and experience, I might not want ABS either. I don't like it in cars. But practice as I do on the bike, I'm still not certain that I would not lock them up in a real panic stop. A friend who had ridden for 50 years without an injury, and had not been down since 1967, recently locked up the front wheel of his Aprilla when a woman turned in front of him from the left lane. He said he almost got it stopped, but then came the skid....and broken ribs.

BTW, I cover the front brake with two fingers at ALL times. It has saved my bacon at least once
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Post by socalrob »

Dallera

I would suggest on your next BMW you not get ABS w/ servos, as I don't think you would like it. :wink:

There, everything is settled.

:D
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dallara

SocalRob...

Post by dallara »

Hey, SocalRob...

You wrote:
Dallera

I would suggest on your next BMW you not get ABS w/ servos, as I don't think you would like it.

I don't think you really have to worry about that, Rob! :lol: :lol: :lol:

I think I would love one of the new R-1200-RT's, but I'm afraid between BMW's every escalating prices and the linked, servo-assisted brakes it is becoming an almost certainty one won't be in my garage...

However, a R-1200-GS, which you *CAN* buy without the servo-assist (and Bones here just got one...) might be a distinct possibility one day... That is if I can ever make up my friggin' mind on what ot buy next! :lol: :lol: :lol:

And it's D-A-L-L-A-R-A... :wink: :lol: :wink:

Rob, you also said:
There, everything is settled.

Well, I guess you're right, as it applies to me... But I still wish somebody would answer the question, just once, that I have asked in this thread earlier (and previously in other threads, too, but nobody seems to want to go there...).

You know the one; it goes like this:

"One quick question for those proponents of Beemer's servo-assisted, linked, ABS systems - Are you interested in actually learning proper braking techniques, or would you simply prefer not to learn to ride proficiently and leave the control aspects of the motorcycle to BMW?"

I also wonder if some of the pro-BMW servo-assist ABS proponents would welcome fly-by-wire, computer-controlled throttle control and/or any sort of computer-controlled servo-assisted steering system that would do their riding for them...

Just curious...

Cheers!

Dallara
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Post by arkline »

I also wonder if some of the pro-BMW servo-assist ABS proponents would welcome fly-by-wire, computer-controlled throttle control and/or any sort of computer-controlled servo-assisted steering system that would do their riding for them...
Sorta violates the KISS principle, doesn't it? I think that's the one thing that keeps me away from ABS, that and Murphy... :lol:
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Re: SocalRob...

Post by morrie »

Dallara wrote: "One quick question for those proponents of Beemer's servo-assisted, linked, ABS systems - Are you interested in actually learning proper braking techniques, or would you simply prefer not to learn to ride proficiently and leave the control aspects of the motorcycle to BMW?"
ABS systems vary in efficiency and I would put the BMW motorcycle system at the top. I generally don't like them in a car. I have been a track instructor in cars for two decades and have taught a lot of car-control clinics. We teach how to emulate ABS by rapidly pumping the brakes in a panic stop. This induces brief wheel skid, but will produce a faster stop than a full lockup. That is OK for someone with average skills, but every competition driver I know can stop an ABS equipped car faster using threshold braking and never activating the system.

The same is true, in my opinion, for the BMW bike system. I can haul that sucker down in no time using two fingers on the front brake, and never engaging the ABS, and my skills on the bike don't measure up to what I can do in a car. As I wrote earlier, The instructor and other riders at my recent ERC course were very impressed with the way the roadster stopped. The BMW system is sophisticated enough that it only engages a miliisecond before tire skid. I contend that if you are braking properly, you'll never know the ABS system is there. For those of us with lesser motorcyling skiils, it's a comforting safety feature.
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