No more servo assited brakes for bmw? - BMW Luxury Touring Community
 
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post #1 of 8 Old Jul 31st, 2006, 9:20 pm Thread Starter
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No more servo assited brakes for bmw?

http://www.gelandestrasse.com/bmw/bmwabsasc.pdf

saw this on another list and took a quick look, I like the servo brakes, hope these stop as good <g>

Tom

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post #2 of 8 Old Jul 31st, 2006, 9:25 pm
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Not from what I read...
"To provide the desired integral function, brake pressure for the rear-wheel

circuit is generated and built up by an electronically controlled hydraulic pump.

This offers the advantage of pressure management and control completely

independent of the front wheel circuit which is the prerequisite for dynamic,

adaptive and, ultimately, consistently ideal brake force distribution to

the rear wheel as well as fully independent brake management and control."

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post #3 of 8 Old Jul 31st, 2006, 9:36 pm
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Tom,

You are correct. No more servo assist. Just simple hydraulic ABS.

http://www.bmwlt.com/forums/showthre...nced+stability


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post #4 of 8 Old Jul 31st, 2006, 10:20 pm Thread Starter
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Quote:
Originally Posted by eljeffe
Tom,

You are correct. No more servo assist. Just simple hydraulic ABS.

http://www.bmwlt.com/forums/showthre...nced+stability
is that what is on the NEW gt now? cause that thing sure stopped great!

Tom

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post #5 of 8 Old Aug 3rd, 2006, 2:53 pm
 
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the servo assist will be

ok its throu the servo will continu just on the lt !!! just on the LT !!!! no more servo on bmw motorcycles from 2007 just continu on LT
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post #6 of 8 Old Aug 3rd, 2006, 2:58 pm
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Since the reason is to provide traction control, I was thinking.

Since if you're rear wheel starts spinning and sliding, and you let off the gas, you risk a high side,

Would the traction control lead to an increased risk of high sides ?

What do you all think ?

James Ranks
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post #7 of 8 Old Aug 3rd, 2006, 3:16 pm
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Quote:
Originally Posted by eljeffe
Tom,

You are correct. No more servo assist. Just simple hydraulic ABS.

http://www.bmwlt.com/forums/showthre...nced+stability
They had a good thing with the 99 - 01's and should have kept the brakes that way. Power assisted brakes is (other than $$) the main reason I have no desire for a newer bike. I like my setup much better - but still hate the clanking rear rotor which now rattles at idle.

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post #8 of 8 Old Aug 16th, 2007, 8:58 am
 
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Quote:
Originally Posted by ranks
Since the reason is to provide traction control, I was thinking.

Since if you're rear wheel starts spinning and sliding, and you let off the gas, you risk a high side,

Would the traction control lead to an increased risk of high sides ?

What do you all think ?
From my understanding the brakes are not used with the ACS (traction control). The computer first retards the igntion to reduce power, then cuts teh igntion and fuel altogether.

I honestly don't know why it's called stability control rather than ATC (automatic traction control) since unlike a car, a motorcycle has a limited ability to slide before it crashes, so you can't really react to a loss in traction in the lateral direction to prevent tucking the front end, sliding out hte rear or highsiding.

So the only thing ASC does is prevent wheelies and rear wheel spin on accleration. Supposedly it also allows 10% wheel slippage for optimum traction, and that might also help prevent a highside and still allow the front wheel to come just barely off the ground for optimum acceleration.

My '07 R1200RT does not have the servo assist. I think overall I prefer it this way. It still feels more powerful than my non-abs R1150R and it's not too grabby at parking lot speeds, and has no lag is response to lever inputs. Also you have full brakes with the engine off or if there is a ABS fault or failure.
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