Author Topic: Not a cafe racer project K100  (Read 15996 times)

Offline Skunky

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  • Posts: 384
Not a cafe racer project K100
« on: August 25, 2017, 05:05:30 PM »
Hi I recently stole a K100 ex police bike for a met 700. Up till now I have had newish
Bikes but this is my first build.

Thinking being ex Police for most of its 60k it would be well maintained I thought it was a great buy. The bike starts runs and drives and sounds OK if not a bit smokey ( seems to be running rich ) but plugs were nice and dry so no oil or water evidence just a little sooty. Clutch is a little stiff but it has stood for a while. I have in mind what I want to achieve and have made a mock up.






So started the strip down.......

I'm not one for giving a bike names but I have given this one many B######d F#####r piece of S##t and even the C word And at times all of them..

It would seem that although the Police mechanics maintain their fleet they do not use torque wrenches or anti seize. Bsds

The Exhaust had three stripped and crossed studs and no gaskets meaning it was corroded into place. One of the sockets snapped at the back and two studs had to be drilled out and re threaded but all done now

I have cut the frame and re- fitted and welded in the original rear section, minus any unwanted tabs etc. Ready for a seat build





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  • Derby GB
  • BMW K100lt
Rebuild it and they will come..
90 K100lt
Triumph Thruxton 900
Honda CB400F

Offline The Dude

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  • Posts: 509
Re: Not a cafe racer project K100
« Reply #1 on: August 25, 2017, 08:11:34 PM »
Awsome providence,Skunky,welcome.
The smoke will be from the weed someone stuffed into the air box.Ha,the fuzz,aye!
The cuss word that works for my brick and Guzz,funnily enough,is:Honda.'Took a long time to find that out.
All the best.
  • Auckland, New Zealand
  • K75s
Current.
TR6R 1973 from new.
Moto guzzi 850 III .1983 from,almost, new.
K75S 1986 from new.vin-0103141
On my second millionth km.give or take a hundred k Kay's.
"The Dude abides. I don't know about you but I take comfort in that. It's good knowin' he's out there."
All the best!

Offline Skunky

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Re: Not a cafe racer project K100
« Reply #2 on: August 25, 2017, 11:59:28 PM »
Hi Dude

If it was Skunk in the air Box I would have smoked!.  But I imagine you're right about the air box. I think the Filter has been there for a few years smelt like a badgers box. Hopefully a new one will help the mixture and reduce the blackness.
  • Derby GB
  • BMW K100lt
Rebuild it and they will come..
90 K100lt
Triumph Thruxton 900
Honda CB400F

Offline Martin

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Re: Not a cafe racer project K100
« Reply #3 on: August 26, 2017, 01:37:47 AM »
There is a plug on top of the RH front of the air box, removing this allows you to access the mixture screw, with a 5 mm allen key. To adjust you can either use a exhaust gas analyser  or use a method called the lean drop method ( look up on this site). I bought a Gunson Digital Analyser years ago for between $300.00- $400.00 a lot cheaper in the US around $200.00. If you buy one follow the instructions to the letter and be patient, it has proved to be invaluable.

A little known feature on the 2v bikes ( not on 4v engines) is that with the bike idling at 1000rpm if you press the green stater button it will tell you whether the mixture is right. When you press the button if the mixture is right the revs should either stay the same or rise slightly. If the revs drop or rise significantly the mixture will require adjusting.
Regards Martin.
  • North Lakes Queensland Australia
  • 1992 K75s Hybrid, Lefaux, Vespa V twin.

Offline Skunky

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Re: Not a cafe racer project K100
« Reply #4 on: August 26, 2017, 05:52:34 PM »
Thanks Martin useful advise that I will look at once the beemer is running again.


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  • Derby GB
  • BMW K100lt
Rebuild it and they will come..
90 K100lt
Triumph Thruxton 900
Honda CB400F

Offline Skunky

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Re: Not a cafe racer project K100
« Reply #5 on: August 26, 2017, 06:52:59 PM »
 On Monday my back had some sort of seizure reducing me to crawling around the house and not moving much. Not being good at inactivity I decided it would be the perfect time to make my seat. I have already made a seat pan using a rear from a RS as Sloping rear on the LT felt a bit clumsy.




The unit was cracked and therefore a reasonable price 15 .

So after cutting and painting I have built the new seat base.





The lights and indicators are an led strip that will sit on the black line.

Anyway I had bought a used leather jacket  and turned this



Into this



I'm pleased with the outcome and know it will look better when stretched over the base rather than loose. Almost worth the back pain.




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  • Derby GB
  • BMW K100lt
Rebuild it and they will come..
90 K100lt
Triumph Thruxton 900
Honda CB400F

Offline Martin

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Re: Not a cafe racer project K100
« Reply #6 on: August 26, 2017, 07:06:37 PM »
Won't the jacket be a bit drafty with the back cut out? :dunno
Regards Martin.
  • North Lakes Queensland Australia
  • 1992 K75s Hybrid, Lefaux, Vespa V twin.

Offline Skunky

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Re: Not a cafe racer project K100
« Reply #7 on: August 26, 2017, 07:09:50 PM »
Matches my leather Chaps   :hehehe
  • Derby GB
  • BMW K100lt
Rebuild it and they will come..
90 K100lt
Triumph Thruxton 900
Honda CB400F

Offline Laitch

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Re: Not a cafe racer project K100
« Reply #8 on: August 26, 2017, 11:24:30 PM »
Matches my leather Chaps   :hehehe
:clap:
  • Along the Ridley in Vermont.
  • 1995 K75 72,000 miles
I wept because I had no radials until I met a man who had no splines.
https://tinyurl.com/RillRider

Offline johnny

  • TrailBrakingThrottleWhacker
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  • Whacking...n...Chopping Sliding...n...High Siding
Re: Not a cafe racer project K100
« Reply #9 on: August 26, 2017, 11:40:04 PM »
greetings...

matches my coddpiece... or at least the one i gotts on tonight...

j o
  • :johnny i parks my 96 eleven hundert rs motobrick in dodge county cheezconsin  :johnny

Offline Laitch

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Re: Not a cafe racer project K100
« Reply #10 on: August 26, 2017, 11:49:30 PM »
matches my coddpiece... or at least the one i gotts on tonight...
  • Along the Ridley in Vermont.
  • 1995 K75 72,000 miles
I wept because I had no radials until I met a man who had no splines.
https://tinyurl.com/RillRider

Offline Skunky

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Re: Not a cafe racer project K100
« Reply #11 on: August 26, 2017, 11:56:22 PM »
Perhaps I'll stitch one one the front saddle. Like the CB200


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  • Derby GB
  • BMW K100lt
Rebuild it and they will come..
90 K100lt
Triumph Thruxton 900
Honda CB400F

Offline The Dude

  • ^ SuperNatural Motobricker
  • Posts: 509
Re: Not a cafe racer project K100
« Reply #12 on: August 27, 2017, 01:32:49 AM »
Perhaps I'll stitch one one the front saddle. Like the CB200

Ahhh,I thought I smelt Honda,just to the left there.Awsomely reliable.
'Loved the look of the CB two hundie.
Classic use and source of leather,yet more providence.The ducktail still holds a few cans,but I guess your gunna put the brains in there or the power source or that skunk I know you've found.
I have to kayak 50 kms a week to stop my back fucking out.'Took a long time to find that out,seriously.
  • Auckland, New Zealand
  • K75s
Current.
TR6R 1973 from new.
Moto guzzi 850 III .1983 from,almost, new.
K75S 1986 from new.vin-0103141
On my second millionth km.give or take a hundred k Kay's.
"The Dude abides. I don't know about you but I take comfort in that. It's good knowin' he's out there."
All the best!

Offline Skunky

  • ^ Proficient Motobricker
  • Posts: 384
Re: Not a cafe racer project K100
« Reply #13 on: August 27, 2017, 09:56:44 AM »
No Honda there, It's a Triumph Thruxton




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  • Derby GB
  • BMW K100lt
Rebuild it and they will come..
90 K100lt
Triumph Thruxton 900
Honda CB400F

Offline Skunky

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  • Posts: 384
Re: Not a cafe racer project K100
« Reply #14 on: August 27, 2017, 09:58:07 AM »



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  • Derby GB
  • BMW K100lt
Rebuild it and they will come..
90 K100lt
Triumph Thruxton 900
Honda CB400F

Offline The Dude

  • ^ SuperNatural Motobricker
  • Posts: 509
Re: Not a cafe racer project K100
« Reply #15 on: August 28, 2017, 03:34:13 AM »
No Honda there, It's a Triumph Thruxton.
Nice!
Interesting codpiece surrounding the drive sprocket,must be back in fashion,Jo the trend setter?
  • Auckland, New Zealand
  • K75s
Current.
TR6R 1973 from new.
Moto guzzi 850 III .1983 from,almost, new.
K75S 1986 from new.vin-0103141
On my second millionth km.give or take a hundred k Kay's.
"The Dude abides. I don't know about you but I take comfort in that. It's good knowin' he's out there."
All the best!

Offline Skunky

  • ^ Proficient Motobricker
  • Posts: 384
Re: Not a cafe racer project K100
« Reply #16 on: August 31, 2017, 06:18:06 AM »
Greetings Beemer Lovers, Having mostly recovered from the back spasm incident I'm back on the project. The seat has been finished.


The stock front mudguards and fork brace trimmed down and repainted.




And work started on a new clock and warning light surround.





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  • Derby GB
  • BMW K100lt
Rebuild it and they will come..
90 K100lt
Triumph Thruxton 900
Honda CB400F

Offline MaraudeRS

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  • Posts: 235
Re: Not a cafe racer project K100
« Reply #17 on: September 04, 2017, 03:17:33 AM »
I like your idea of using the back part of the RS cowl for the new one. As mine is a 92 RS I was considering doing the same. Keep up the good work!


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  • Monterey, CA
  • 1992 K100RS

Offline Skunky

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  • Posts: 384
Re: Not a cafe racer project K100
« Reply #18 on: September 16, 2017, 09:32:16 AM »
Good morning Brickers

This week has been an electrical and painting week. I was not happy with the paint on the rear tail piece so decided to reprint. I also rewired the tail lights shortened the cable and refitted the stock connector under the seat so that the seat can be removed. I then fitted a connector on the led light strip, wired in the resistors for the flasher circuit applied the decals and fitted the strip to the painted tail piece .

I also did more work on the fuel tank and the first four coats have been applied.


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  • Derby GB
  • BMW K100lt
Rebuild it and they will come..
90 K100lt
Triumph Thruxton 900
Honda CB400F

Offline Skunky

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  • Posts: 384
Re: Not a cafe racer project K100
« Reply #19 on: November 25, 2017, 03:07:53 AM »
Greetings people. Build has been slow since September due to holidays work and life getting in the way. However I have spent time on the painting of the tank and I have finally finished and wired the speedo and warning light surround





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  • Derby GB
  • BMW K100lt
Rebuild it and they will come..
90 K100lt
Triumph Thruxton 900
Honda CB400F

Offline Skunky

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  • Posts: 384
Re: Not a cafe racer project K100
« Reply #20 on: December 03, 2017, 04:27:02 PM »
Operation Radiator revamp. The radiator although solid and not leaking was cosmetically in a sorry state so needed a revamp.
  • Derby GB
  • BMW K100lt
Rebuild it and they will come..
90 K100lt
Triumph Thruxton 900
Honda CB400F

Offline Martin

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  • Posts: 3909
Re: Not a cafe racer project K100
« Reply #21 on: December 03, 2017, 04:40:00 PM »
There are devices available to help straighten out cooling fins. Available from about $3.00 upwards, however they need to be used with care.
https://www.ebay.com.au/itm/A-C-Condenser-Radiator-Evaporator-Straightener-Fin-Comb-Rake-Cleaner-Tool/222624429526?hash=item33d57335d6:g:EG0AAOSwXf9ZoPnn I have also seen a special pair of pliers used by a radiator restorer but I'm not sure if they were custom as I have not been able to find them online.
Regards Martin.
  • North Lakes Queensland Australia
  • 1992 K75s Hybrid, Lefaux, Vespa V twin.

Offline Skunky

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  • Posts: 384
Re: Not a cafe racer project K100
« Reply #22 on: December 03, 2017, 06:24:36 PM »
There are devices available to help straighten out cooling fins. Available from about $3.00 upwards, however they need to be used with care.
https://www.ebay.com.au/itm/A-C-Condenser-Radiator-Evaporator-Straightener-Fin-Comb-Rake-Cleaner-Tool/222624429526?hash=item33d57335d6:g:EG0AAOSwXf9ZoPnn I have also seen a special pair of pliers used by a radiator restorer but I'm not sure if they were custom as I have not been able to find them online.
Regards Martin.


Thanks Martin


Overall there are about 5% or so that have fin damage and I decided to live with them for now and see how it shapes up in use. The fan is working well and worst case scenario is to buy another radiator .


https://www.ebay.co.uk/itm/For-Bmw-K100-Rt-Rs-Aluminum-Radiator-1985-1990-New-86-87-88-89-90/272747515077?epid=2230504805&hash=item3f8104ccc5:g:flsAAOSw74FXPcdy


The Apollo racing stainless steel look tempting.

  • Derby GB
  • BMW K100lt
Rebuild it and they will come..
90 K100lt
Triumph Thruxton 900
Honda CB400F

Offline Vespa no more

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Re: Not a cafe racer project K100
« Reply #23 on: December 04, 2017, 03:16:11 AM »
Is there something wrong here...


Laitch, your earlier history lesson bombed


Now getting back to codpieces, it is a well know fact that lined pants are very subtle.





Enjoy


Couple of us might have this song on vinyl


GF
  • Wollongong NSW AUSTRALIA
  • K100RT 1984, K1100RT 1993, Vespa VNB125 1963 :)

Offline Skunky

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Re: Not a cafe racer project K100
« Reply #24 on: December 04, 2017, 04:44:25 AM »
Is there something wrong here...


Laitch, your earlier history lesson bombed


Now getting back to codpieces, it is a well know fact that lined pants are very subtle.





Enjoy


Couple of us might have this song on vinyl


GF

Surely posting the Bee Gees is punishable offence.... :nono

  • Derby GB
  • BMW K100lt
Rebuild it and they will come..
90 K100lt
Triumph Thruxton 900
Honda CB400F

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