BMW K bikes (Bricks)

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1Back to top Go down   ABS Question Empty ABS Question on Thu Jan 09, 2014 8:09 pm

klamityboy

klamityboy
Gold member
Gold member
Yesterday I had to slam the brakes due to a pedestrian darting in front of a truck. No damage other than a racing heart. I noticed that the ABS kicked in but the pulses were much slower than I recall. My recollection is that the last time the ABS was activated (a few years before) the brakes pulsed about 2-3 times per second. Yesterday is was about once every 1 to 1.5 seconds. Thoughts on what might cause this?

Thanks


__________________________________________________
Klamityboy
1991 K75RT-P

Model Description: K 75RT
Market: Europe
Type: 0565
E-Code: K569
Engine: 3_ZYL - 0,70l (55kW)
Transmission: Manual
Body Color: Polizeiweiss
Production Date: 30.08.1990
    

2Back to top Go down   ABS Question Empty Re: ABS Question on Thu Jan 09, 2014 8:59 pm

RicK G

RicK G
admin
admin
I would not even hazzard an opinion but the Guru of K bike ABS will be able to answer (most likely) http://bmwk10075abs1fix.web.fc2.com/  If anyone knows Tosi Tabuki will


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"Man sacrifices his health in order to make money.
Then he sacrifices money to recuperate his health.
And then he is so anxious about the future that he does not enjoy the present; the result being that he does not live in the present or the future; he lives as if he is never going to die, and then dies having never really lived."   Dalai Lama


Bikes 1998 K1100 LT, 1993 K75 RT, 1996 K75RT, 1986 K75 GS, 1979 Z1300 Kawasaki
    

3Back to top Go down   ABS Question Empty Re: ABS Question on Fri Jan 10, 2014 4:06 am

xpc316e

xpc316e
Gold member
Gold member
Before you start delving into the ABS, I would advise going out on the bike and deliberately activating the ABS in a simulated emergency braking exercise.  When it all happens for real, our reactions are so quick that we perceive things as happening in slow motion; that may have given you the impression of the 'slow' pulsing.

I know many years ago I was a passenger in a car that spun on a busy road, and the sensation was one of 'this is all happening so slowly, why isn't our driver doing anything?', when in reality it was all over so quickly.


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VIN 0191428, 1991 K100LT, formerly owned by Lancashire Constabulary. This old warhorse is now 'out to grass' and living in retirement in Suffolk, where it will be showered with appropriate love and care.

VIN 6459609, 1992 K1100LT, another ex-Police machine, even though she now looks like she is a former fire engine.
    

4Back to top Go down   ABS Question Empty Re: ABS Question on Fri Jan 10, 2014 3:59 pm

klamityboy

klamityboy
Gold member
Gold member
In the most recent case it was a real emergency and thus perspective might have been skewed. Subsequently I have done a controlled emergency stop test and the brakes pulse very slowly. Not sure if it is the ABS computer or the actual pumps for from and rear brakes.

I should add that there are no ABS faults just a slow pushing of the brakes when the ABS activates.


__________________________________________________
Klamityboy
1991 K75RT-P

Model Description: K 75RT
Market: Europe
Type: 0565
E-Code: K569
Engine: 3_ZYL - 0,70l (55kW)
Transmission: Manual
Body Color: Polizeiweiss
Production Date: 30.08.1990
    

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