BMW K bikes (Bricks)

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1Back to top Go down    Vibration Trivia Question on Mon Nov 18, 2013 1:59 pm

BadjerJim

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I was reading back through fuel injection synchronization, and vibration, and knew this would be a good place to ask:

Did any of the K-bikes (K100, K1100, K1200, K75) have rubber mounts on the engine? Or was it always on the handlebars/footpegs?

I know early K100 had rubber footpeg mounts, and later models did not.

    

2Back to top Go down    Re: Vibration Trivia Question on Mon Nov 18, 2013 2:53 pm

MikeP

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The RS, RT & LT models have a rubber bush in the forward engine mounts.

The naked versions have solid mounts as does the K75S.

The K1100 has rubber mounted footpegs but a completely different system to that fitted to the early K100s.


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1992 K1
1993 K1100R (used to be an LT)
    

3Back to top Go down    Re: Vibration Trivia Question on Thu Nov 21, 2013 4:19 am

K75cster

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I love to know just how different a k100 rs,rt,lt would be if all 5 mounts were rubber like the front 2 on the rs rt lt's, I know they design frames to manage vibration but ya just have ta wonder.


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Keith - 1987 K75c with r100rt replica fairing and half of a 1984 K100rt

The Clever are adept at extricating themselves from situations that the wise would have avoided from the outset - QUOTE from david Hillel in Out of the Earth.
    

4Back to top Go down    Re: Vibration Trivia Question on Thu Nov 21, 2013 8:53 am

RicK G

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That would mean the rear and front wheels would have a rubber mount between then. Reminicent of the Norton Comandos with the Iso-elastic mounts on the engine and rear wheel.


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If everything seems under control then you aint goin fast enough:- Mario Andretti
Bikes 1986 K100RT, 1993 K1100 LT, 1994 K1100 LT, 1993 K75 RT, 1996 K75RT, 1986 K75 GS, 1979 Z1300 Kawasaki X 2 & 1976 SR 500 Yamaha for now
    

5Back to top Go down    Re: Vibration Trivia Question on Fri Nov 22, 2013 12:20 am

K75cster

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yes it would, you then are at the mercy of the vulcanising merits of the rubber mounts, but would it detract from the ride experienced by all at present or would it improve the experience by lessening the vibes? or just shift them to another entry point. kawasaki had rubber mounts on the GT550 and gt750 from mid 80'sish from what I remember of looking at them at the time, I remember what a badly set up commando was like so wouldnt want that for any of us


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Keith - 1987 K75c with r100rt replica fairing and half of a 1984 K100rt

The Clever are adept at extricating themselves from situations that the wise would have avoided from the outset - QUOTE from david Hillel in Out of the Earth.
    

6Back to top Go down    Re: Vibration Trivia Question on Fri Nov 22, 2013 3:54 am

the.postman


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There's nothing like riding a bike that's hinged in the middle to test the control of the old sphincter muscles!!!!!


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1985 K100 RS 104EA49840092 #0081788 SILVERish (Madison) Prod. date 05/12/84
1984 srx 600
1986 cbr1000f/h
    

7Back to top Go down    Re: Vibration Trivia Question on Fri Nov 22, 2013 4:01 am

blaKey

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"There's nothing like riding a bike that's hinged in the middle to test the control of the old sphincter muscles!!!!!"

A mates Kawasaki 350 triple comes to mind...


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Neil
K100RS 1986 RED!
K100RT 1987 (now nekkid with red bits)

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8Back to top Go down    Re: Vibration Trivia Question on Fri Nov 22, 2013 4:17 am

K75cster

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And my old ram air gt550 also gets the nod


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Keith - 1987 K75c with r100rt replica fairing and half of a 1984 K100rt

The Clever are adept at extricating themselves from situations that the wise would have avoided from the outset - QUOTE from david Hillel in Out of the Earth.
    

9Back to top Go down    Re: Vibration Trivia Question on Fri Nov 22, 2013 4:20 am

the.postman


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Yep. The old kwak 750 H2 "widow makers". The bikes I cut my motorcycling teeth on. Ahh joyous memories.


__________________________________________________
1985 K100 RS 104EA49840092 #0081788 SILVERish (Madison) Prod. date 05/12/84
1984 srx 600
1986 cbr1000f/h
    

10Back to top Go down    Re: Vibration Trivia Question on Fri Nov 22, 2013 4:30 am

K75cster

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and for post number 800, we can say i've never ridden one of those quackas, my mate wombat has a kawasaki 250 triple twostroke that was fun, i must say the triple twostrokes were or had one hell of a note on the throttle, loved to get the suzuki gt550 screaming, that is also how i found out about the frames wonderful handling failures.


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Keith - 1987 K75c with r100rt replica fairing and half of a 1984 K100rt

The Clever are adept at extricating themselves from situations that the wise would have avoided from the outset - QUOTE from david Hillel in Out of the Earth.
    

11Back to top Go down    Re: Vibration Trivia Question on Fri Nov 22, 2013 6:11 am

MikeP

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K75cster wrote:I love to know just how different a k100 rs,rt,lt would be if all 5 mounts were rubber like the front 2 on the rs rt lt's, I know they design frames to manage vibration but ya just have ta wonder.
Looking at the models with the bushed forward frame mounts, it suggests to me that they are there to deal with vibrations transmitted to the fairing rather than the rider.

The K75S doesn't need them as the fairing is mainly mounted on the headstock in a very different fashion and the two, rear lower mounts (to the frame) have their own rubber bushes.


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1992 K1
1993 K1100R (used to be an LT)
    

12Back to top Go down    Re: Vibration Trivia Question on Fri Nov 22, 2013 6:59 am

K75cster

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Good point mikep, the naked K's have solid mounts, wonder if any of the boys who removed their fairing had ever ridden a naked K to notice any difference with the rubber mounts new nakeds they greated, maybe too insignificant to notice without the fairing to amplify things


__________________________________________________
Keith - 1987 K75c with r100rt replica fairing and half of a 1984 K100rt

The Clever are adept at extricating themselves from situations that the wise would have avoided from the outset - QUOTE from david Hillel in Out of the Earth.
    

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