BMW K bikes (Bricks)

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1Back to top Go down   intergrated brakes Empty intergrated brakes on Mon Jan 09, 2017 6:54 pm

flea

flea
active member
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having the 1987 k100rt and a dodgy foot was wondering how hard / exspensive it would be to put a intergrated brake system on so would only have to use the front brake lever ,we have 2 blokes in the area both with only 1 arm and 1 leg each , both riding Harley trikes using a moto guzzie set up operating like this , don't mind me but its still new toy statis so looking at all the options while waiting to get the parts to get it back on the rd

    

2Back to top Go down   intergrated brakes Empty Re: intergrated brakes on Mon Jan 09, 2017 7:48 pm

indian036

indian036
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I'm no expert, but branching the front brake line and carrying it back to the rear caliper wouldn't be difficult. How that would go with braking balance I'll leave to those with more expertise.
Again, from hearsay, I think the ABS brakes operate both brakes from the front lever, but not from the back pedal. Big job to retrofit an ABS, though.

Might be a good idea to relocate this thread into the Technical, Repair and Troubleshooting section.  Smile

Bill


__________________________________________________
1985 K100RT  VIN 0028991  My original Very Happy   (Historic rego)
1985 K100RT  VIN 0029036  BOB the Blue Old Bike  (Historic rego)
1990 K100LT  VIN 0190452  Work in progress
1984 K100RT  VIN 0023022  Work needing lots of progress

1986 K100RT  VIN 0090542  Work needing lots and lots of progress
1993 K1100LT  VIN 0183046  Work in progress
1993 K75S  VIN 0213045  Newest toy, slightly non-original
    

3Back to top Go down   intergrated brakes Empty Re: intergrated brakes on Mon Jan 09, 2017 8:10 pm

RicK G

RicK G
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None of the ABS I were integrated. The ABS-II on the K1100 did not have integration and AFAIK the K1200 bricks didn't have it either but on that I will stand corrected.
As for retro fitting I wouldn't even attempt to try.
Are you familiar with the rear braking setup that Mick Doohan used, it had a thumb operated lever on the left grip and gave him enough braking for Moto GP racing.
Also be aware that with the integrated braking the front comes on when going slow and turning and until you learn better you will probably go arse over, that doesn't happen with a trike. It's very easy to do.


__________________________________________________
"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 1993 K1100 LT, 1998 K1100 LT, 1993 K75 RT, 1996 K75RT, 1986 K75 GS, 1979 Z1300 Kawasaki X 2 for now
    

4Back to top Go down   intergrated brakes Empty Re: intergrated brakes on Tue Jan 10, 2017 12:32 am

Stan

Stan
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Trying to get a retro fitted system through registration may prove to be difficult, even in Queensland where you don't have annual checks.


__________________________________________________
1983 K100 basic vin 0003960 colour red  GONE
1987 K100RT vin 0094685 colour, orange peel, sorry, pearl..GONE
F800R black
    

5Back to top Go down   intergrated brakes Empty Re: intergrated brakes on Tue Jan 10, 2017 2:39 am

flea

flea
active member
active member
kinda looked into yrs ago for my xs650 but stopped when found the guzzi production models which used it used a disc rear brake where my xs was drum rear , did learn there was a adjustible valve normally set at 60 % front 40 % back off front brake lever (moto guzzi ) ,was same prob with the k-lever ,made in England ,was for disc ,besides a redicules price (same company who makes the klictronic gear change ) might have to look into it a bit more ,just thought with the older mob here someone might have already done the set up (some ? jap cruisers had similer set ups )... was told the thumb brake (by k- lever )was a bit of a understatement ...mmm.. might have to make some more enquirys

    

6Back to top Go down   intergrated brakes Empty Re: intergrated brakes on Tue Jan 10, 2017 4:46 am

92KK 84WW Olaf

92KK 84WW Olaf
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As Dai will point out the Brembo brake calipers on the K100 are shared with the Guzzi which may be a good starting point. The same calipers are also shared with some of the R models but left becomes right as they are mounted the other way round. Not sure about the master cylinders but I suspect that this may be a route to go as the braking forces on each wheel may not be radically different. Getting it signed off may be a problem.

BUT I DO NOT fancy linked brakes for riding in ice or extreme gravel when at best you need the option of zero brake force on the front wheel. Many years back a very kindly man would take us riding our bikes on mud and oiled surfaces to get us the feel of bikes in such conditions and how to keep them upright or let them down slowly to minimise damage to oneself or the bike. Extreme careful use of the throttle on power and engine braking and complete non use of front brakes was the order of the day and very little use of the rear. Not a chance you could do that with linked brakes, front wheel may well let go first.

Roundabouts and car parks over here can be heavily contaminated with diesel spillages, use of the rear brake is great for getting the K to drop into the tight curve, relearning this could be scary as I would never use the front brake in such a location in wet conditions when you see rainbows on the surface!

Having a complete K100LT with ABS in my shed I think the idea of adding ABS would not be impossible but would have to be extremely methodical and IMHO I would only attempt it as a transfer from one working bike to another. Wiring is 'fun'.


__________________________________________________
1992 K100LT 0193214 Bertha Alaska Blue 101,000 miles
1984 K100RT 0022575 Brutus Baja Red 578 bought 36,000 now 89,150 miles
1997 K1100LT 0188024 Wotan Mystic Red 689 58,645 now 100,380 miles
1983 K100RS 0011171 Fricka 606 29,495 miles Damn K Pox Its a Bat outta Hell No 33,600 miles
    

7Back to top Go down   intergrated brakes Empty Re: intergrated brakes on Tue Jan 10, 2017 5:41 am

flea

flea
active member
active member
@92KK 84WW Olaf wrote:As Dai will point out the Brembo brake calipers on the K100 are shared with the Guzzi which may be a good starting point. The same calipers are also shared with some of the R models but left becomes right as they are mounted the other way round. Not sure about the master cylinders but I suspect that this may be a route to go as the braking forces on each wheel may not be radically different. Getting it signed off may be a problem.

BUT I DO NOT fancy linked brakes for riding in ice or extreme gravel when at best you need the option of zero brake force on the front wheel. Many years back a very kindly man would take us riding our bikes on mud and oiled surfaces to get us the feel of bikes in such conditions and how to keep them upright or let them down slowly to minimise damage to oneself or the bike. Extreme careful use of the throttle on power and engine braking and complete non use of front brakes was the order of the day and very little use of the rear. Not a chance you could do that with linked brakes, front wheel may well let go first.

Roundabouts and car parks over here can be heavily contaminated with diesel spillages, use of the rear brake is great for getting the K to drop into the tight curve, relearning this could be scary as I would never use the front brake in such a location in wet conditions when you see rainbows on the surface!

Having a complete K100LT with ABS in my shed I think the idea of adding ABS would not be impossible but would have to be extremely methodical and IMHO I would only attempt it as a transfer from one working bike to another. Wiring is 'fun'.
thanks will give me something to mull over ,if remember correctly the front brake lever controlled f / and back ,where the rear lever only activates the rear on the guzzi ,so there is a choice , on the xs650 tried forward controls but found to tiring on dodgy leg (means  pushing leg on pedal instead of toes and foot ) on the xs have a longer pedal off a xs750 which is bent up slightly . but this means have to lift foot up and forward before pressing down (bit like using boards instead of pegs ) time consuming in a emergency

    

8Back to top Go down   intergrated brakes Empty Re: intergrated brakes on Tue Jan 10, 2017 6:45 am

BobT

BobT
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I know my 2003 R1150RT had integrated brakes but not sure if my 2004 K1200GT did.

    

9Back to top Go down   intergrated brakes Empty Re: intergrated brakes on Tue Jan 10, 2017 8:25 am

RicK G

RicK G
VIP
VIP
The K1200LTs may have had that system, they had twin spot calipers at the rear but the GTs probably not because they had a single spot two piston caliper on the rear like the K100 and K1100.


__________________________________________________
"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 1993 K1100 LT, 1998 K1100 LT, 1993 K75 RT, 1996 K75RT, 1986 K75 GS, 1979 Z1300 Kawasaki X 2 for now
    

10Back to top Go down   intergrated brakes Empty Re: intergrated brakes on Tue Jan 10, 2017 8:28 am

Dai

Dai
Life time member
Life time member
@flea wrote:if remember correctly the front brake lever controlled f / and back ,where the rear lever only activates the rear on the guzzi ,so there is a choice , on the xs650 tried forward controls but found to tiring on dodgy leg (means  pushing leg on pedal instead of toes and foot ) on the xs have a longer pedal off a xs750 which is bent up slightly . but this means have to lift foot up and forward before pressing down (bit like using boards instead of pegs ) time consuming in a emergency
Other way round - foot brake operates the rear and front l/h disc, front master cylinder operates the front r/h disc. Minimum requirement for linked P8 calipers is a 13mm master cylinder and a 10mm for the front. There are two types of proportioning valve available; a fixed 60-40 fitted to most pre-1100 Tonti-framed Guzzis (except the Spadas) and a pressure -controlled one that runs from 60-40 to 80-20. This type tends to crud up and quit working. I've often wanted to ask someone who has 'de-linked' their brakes whether they'd bothered to change the master cylinders to 13mm front and 10mm rear.

Olaf - I spent the whole time in the Himalayas using the back brake only. The one time I didn't I ended up on my *rse  as the almost-filling in a tuk-tuk sandwich.


__________________________________________________
'83 K100 upgraded to K100RS spec
Others...
'78 Moto Guzzi 850-T3, '79 Moto Guzzi 850-T3 California,'93 Moto Guzzi 1100ie California,
'03 Suzuki Blandit GSF600SK3 (NFS any more because wifey has claimed it)
    

11Back to top Go down   intergrated brakes Empty Re: intergrated brakes on Tue Jan 10, 2017 5:36 pm

Rockman

avatar
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I had integrated brakes on a K100 sidecar. The rear brake was linked to one of the front discs, and the other front to the handlebar lever. Seemed to work ok in that application. Not sure on a solo though.

    

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