BMW K bikes (Bricks)

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diesputnikdie

diesputnikdie
active member
active member
Does anyone have experience or know if it is possible to fit the new design rear brake switch on a pre-'86 K100RS?

I ordered the newer style (61311459588) without realizing that there was an older style (61311459569) on my bike.

I replaced this part because the design was poor enough that oil, road grime, and brake dust had clogged the pin-style connector in the on position, causing my brake lights to constantly be on.  The new style is clearly a better design but I am unsure how to attach it to the footrest that I have.

I cannot find a clear picture or diagram on the net that shows how the new style part is attached.  If anyone could provide a good picture to me I may be able to either fashion a bracket or purchase an updated footrest.

Or maybe you have another way?  Thanks!


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1985 BMW K100RS (SN:0040831)
    

duck

duck
Life time member
Life time member
Install newer peg plates.  But then you'll also need to modify the exhaust hanger mount or get an 86+ exhaust.


__________________________________________________
Current stable:
86 Custom K100 (standard fairing, K75 Belly pan, Ceramic chromed engine covers, paralever)
K75 Frankenbrick (Paralever, K11 front end, hybrid ABS, K1100RS fairing, radial tires)
86 K75C Turbo w/ paralever
94 K1100RS
93 K1100LT (x2)
91 K1
93 K75S (K11 front end)
91 K75S (K1 front end)
14 Yamaha WR250R
98 Taxi Cab K1200RS
14 K1600GT
http://www.ClassicKBikes.com
    

rosskko

rosskko
VIP
VIP
Here is one I prepared earlier.
Hope it helps

Retrofitting K100RS Rear Brake Switch (New Style) Dsc04610


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1986 K100RT VIN 0093801K100RT with summer fairing for a northern visitor

Basic/2 6308802K100CJ  05/1988

K1100RS 0194321
    

RicK G

RicK G
VIP
VIP
@duck wrote:Install newer peg plates.  But then you'll also need to modify the exhaust hanger mount or get an 86+ exhaust.
One can always just install the right peg plate and hope no one will notice and most wouldn't.
I once had a Ford Galaxy LTD with different mags on one side to the other. They were the same brand but one side had 5 kidney shaped slots and the other side 6 slots and in the 2 years I drove it like that nobody even noticed.


__________________________________________________
"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
    

Inge K.

Inge K.
VIP
VIP
The peg plate must be from a bike made sept. -86 (-87 model year) or later.


__________________________________________________
Inge K.
K100RS -86. (first owner), K1100LTSE -94.
    

charlie99

charlie99
VIP
VIP
or just lube up the pin on the old switch with some wd40 every oil change ....to dissolve the crap off it ...it aint hard ....grin


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cheezy grin whilst riding, kinda bloke ....oh the joy !!!! ...... ( brick aviator )

'86 K100 RT..#0090401 ..."Gerty" ( Gertrude Von Clickandshift ) --------O%ORetrofitting K100RS Rear Brake Switch (New Style) Au-log10

'86 k100 rs.. #######..  "Fred " (f(rame) red ) ( Fredrick leichtundschnell ) - -
bits and pieces from many kind friends across the k100 world ...with many thanks ..
    

Inge K.

Inge K.
VIP
VIP
+1.


__________________________________________________
Inge K.
K100RS -86. (first owner), K1100LTSE -94.
    

rosskko

rosskko
VIP
VIP
Actually, I had Al inform me that my brake light was permanently on.
On the RT it has the little plunger type.

The pin appears to be nylon or plastic or some other soft as crap bit of crap and mine was worn off/ rubbed off/ broken off at the base of the metal housing. No amount of WD40 is gonna make it grow back.

Maybe it is not stuck and has suffered the same fate.

Just what I found.

I did not pull the pin out to check its makeup, but the broken end appeared to scratch very readily. I assume something soft ish.


__________________________________________________
1986 K100RT VIN 0093801K100RT with summer fairing for a northern visitor

Basic/2 6308802K100CJ  05/1988

K1100RS 0194321
    

AL-58

AL-58
Life time member
Life time member
If you're prepared to sacrifice your choke light, you can use that switch as a replacement.  Its exactly the same and being in the middle of the bike its usually in pretty good shape.

Al


__________________________________________________
'87 K100RS/HRD sidecar (1100 motor)  sc25 
'92 K100RS-16v (Paint it Black)

'87 K100RT with Paralever backend

"When I'm too old and too foolish to handle a sidecar I'll buy a Sportsbike"

Retrofitting K100RS Rear Brake Switch (New Style) K-dogs10
    

charlie99

charlie99
VIP
VIP
that's pretty true rossko ...when its broke ...good to recognise the fault ...doesn't mean that all the designs were bad ...

just change for changes sake, means that bmw have listened to the wingers for far too long ...crikey mate
there are old "k"s out there  many years older and still going well ...its really a point of recognizing the issue and putting it on the "to do" list ...just like changing plugs ...oil etc

the next thing that might happen is that some one found out that that over priced micro switch with origami folded leg ...isn't ip 67 rated ...and all claims are null and void if you have ridden in rain and out of warranty period ?

manufacturers  - service centres thrive on this kind of "return business " eh?


__________________________________________________
cheezy grin whilst riding, kinda bloke ....oh the joy !!!! ...... ( brick aviator )

'86 K100 RT..#0090401 ..."Gerty" ( Gertrude Von Clickandshift ) --------O%ORetrofitting K100RS Rear Brake Switch (New Style) Au-log10

'86 k100 rs.. #######..  "Fred " (f(rame) red ) ( Fredrick leichtundschnell ) - -
bits and pieces from many kind friends across the k100 world ...with many thanks ..
    

sidecar paul

sidecar paul
Life time member
Life time member
Fit a hydraulic switch in the brake line......no more problems.

Paul.


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'84 K100RS (0014643) (owned since '85), 86 K100RS (0018891) with Martello sidecar (built as an outfit in '88),
'51 Vincent (since '67),'72 Montesa Cota (from new), '87 Honda RS125R NF4 (bought 2015) 
....No CARS never ever!
    

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