BMW K bikes (Bricks)

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1Back to top Go down    K100RS sidecar 1100 upgrade on Sun Jun 30, 2013 6:06 am

AL-58

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I've got a couple of weeks off work so it's time to get stuck into it at last. I've stripped the 1100LT down to an engine and gearbox sitting on the floor.

Now it's the sidecars turn


The first challenge is to get the bike stable on the ground with no wheels or centrestand.


Tomorrow is more stripdown and start on cleaning bits. There will be more pics as it progresses.
Al


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'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"

    

2Back to top Go down    Re: K100RS sidecar 1100 upgrade on Sun Jun 30, 2013 6:40 am

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So, what do you see as the advantages of the upgrade?
Sean.

    

3Back to top Go down    Re: K100RS sidecar 1100 upgrade on Sun Jun 30, 2013 6:47 am

AL-58

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@Saxon7 wrote:So, what do you see as the advantages of the upgrade?
Sean.

More torque, better economy(=better fuel range). I know a few that have done the same and they all reckon its worthwhile.

The existing motor is quite tired and down on power so something had to be done regardless. The big stripdown/reassembly will mean a few things get tidied up along the way too.

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"

    

4Back to top Go down    Re: K100RS sidecar 1100 upgrade on Tue Jul 02, 2013 12:37 am

AL-58

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I've had a win, both bikes are now stripped as far as they will be and I've discovered that I have a 3 row radiator in my '87 RS. That will save me from having to look for one.

Now its time to start cleaning and preparing for reassembly. K parts spread all over the garage

Al



Last edited by AL-58 on Sat Jul 13, 2013 9:17 am; edited 1 time in total


__________________________________________________
'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"

    

5Back to top Go down    Re: K100RS sidecar 1100 upgrade on Tue Jul 02, 2013 1:08 am

RicK G

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I just got mine back together and I still have K parts all over the cave.


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"Every normal man must be tempted, at times, to spit upon his hands, hoist the black flag, and begin slitting throats." from Mencken's 1919 Prejudices

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

6Back to top Go down    Re: K100RS sidecar 1100 upgrade on Sat Jul 13, 2013 6:39 am

AL-58

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I've been slack with pics and updates.

But it's back together bar some small final jobs like wiring the sidecar and towbar wiring again. Also modifying the inner fairing panels to accept the temp and fuel guages. Have to mount the Motronic unit properly also, I do have room for it though under the low seat, though the sidecar top rear mount makes it snug.

The only real problems that fitting the 1100 motor threw up was the exhaust system. It appears the K1100 cyl head mounts the exhaust a little lower and a little further forward than a K100 cyl head. This caused some clearance problems with the sidecar subframe. Otherwise there are few issues, some soldering of K1100 switch connectors to K100 switches etc. Using the K1100 tank as the fuel gauge doesn't want to work with the K100 tank.

Tightened the steering head bearings a bit more than normal, at this stage I don't need a steering damper, there is no headshake.

Was it worth it. Geez it goes hard now SmileThe answer is YES.

Photos tomorrow.

Al



Last edited by AL-58 on Sat Jul 13, 2013 9:15 am; edited 1 time in total


__________________________________________________
'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"

    

7Back to top Go down    Re: K100RS sidecar 1100 upgrade on Sat Jul 13, 2013 6:51 am

charlie99

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onya al ! .....congrats


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

'86 K100 RT..#0090401 ..."Gerty" ( Gertrude Von Clickandshift ) --------O%O
    

8Back to top Go down    Oops on Fri Jul 19, 2013 9:15 am

AL-58

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I suppose it was inevitable that I forgot to tighten something. I triple checked everything for the chassis, sidecar mountings and front end. The back wheel was another story. I've had K rear wheels loosen on me before but it feels very different on three wheels than it does on two.

After feeling an odd vibration/noise, I pulled up to check and found a loose rear wheel, very loose. One snapped bolt, one bolt just sitting in the hole and the two still holding the wheel on well unscrewed. I found the snapped one and the conical seat just 30 metres back down the road. I tightened the 3 to get me home.

The remainder of the broken bolt was easy to remove. I replaced all 4 with new high tensile bolts (they are longer than the standard ones due to the billet rear wheel). No other damage done.

The other good news, it passed it annual roadworthy this afternoon.

Tomorrow new brake pads all round.

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"

    

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