Author Topic: K75 Street Tracker by -mek-  (Read 1091 times)

Offline -mek-

  • Motobrick Curious
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K75 Street Tracker by -mek-
« on: October 30, 2018, 06:53:47 AM »
I got on September a 1992 K75 RT. A former Swedish police bike, so technically in good condition, but not a near to restoration. So a perfect project base.


As an inspiration I found a Street Tracker built by Foundry MC in Spain.


Time will tell how it goes. I've never built up a motorcycle, alltough having some technical experience long time ago...
As a practice I merged old Sauna owen and wheelbarrow to smoker.

I started my project by removing all the fairings. The previous owner had a quite comprehensive service of the bike, with receipts, but some jobs still waited finishing, so I started with service.

So far I've got the wheels to powder coating, should get these ready next week.



Last weekend I continued with steering head bearing, which was good. So just cleaning with kerosine and new CRC Super Longterm MoS2 Grease. I also drained the fork oil and flushed the forks with kerosene. Today I'll change the springs to Progressive suspension and fill it up with Motul 7,5 W fork oil.

My bike has black forks, engine and final drive, but I still have to repaint valve and camshaft covers, since the fairing seals have scraped the paint away a little bit.

I've allready got the most of the parts I need. The biggest question is the fuel tank colour. I like the paint scheme of the Foundry bike, but at the moment I think the tank of my bike will be Mystic red metallic, with Alpine white center (the blue part of Foundry bike) and black stripe between. The paint shop have time just after christmas, so I still have 2 moths for changing my mind...

I will not use any mini led blinkers, headlights or bar end mirrors, but try to imagine, how a Street Tracker would have been in 90'ies.

edit by admin to remove utube link per request of -mek-
  • Finland
  • 1992 BMW K75 RT, 2016 Honda CRF 1000 L

Offline -mek-

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Re: K75 Street Tracker by -mek-
« Reply #1 on: November 02, 2018, 03:04:42 AM »
Got Progressive Suspension springs installed. First I filled up with 420 ml Motul 7,5 W fork oil. Then adjustet the oil level to -160 mm (fork compressed, without springs), also removed about 10 ml oil. I think about 410 ml will give the -160 mm oil level, if you don't have a tool for measuring oil level. PS springs with the spacers that came with them, gave about 30 mm preload. Oil level and viscosity is easy to change later if I'm not happy, we'll see on May.

My RT had OEM heated grips, working. They were easy to uninstal since also the left heater element was glued to the sleeve which was then fastened by two M4 screws to handlebar. I started replacing the RT handlebar with LSL Flat Track handlebar, which I shortened to 800 mm. 10 mm hole on the middle, underside for heated grip wires and two 3,3 mm holes for fastening the left grip sleeve, then M4 threads. No problems.

The most work is grinding the rigth end to 22 mm. Almost all bars that are sold as 22 mm bars aren't realle 22 mm, but 7/8" which is 22,2 mm. So the throttle grip does not rotate free on that, but the bar end must be grinded to 22 mm. Lots of sweat with sandpaper... I also cover the end with thin layer of paynt for protecting against rust.
  • Finland
  • 1992 BMW K75 RT, 2016 Honda CRF 1000 L

Offline -mek-

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Re: K75 Street Tracker by -mek-
« Reply #2 on: November 04, 2018, 11:20:00 PM »
  • Finland
  • 1992 BMW K75 RT, 2016 Honda CRF 1000 L

Offline -mek-

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Re: K75 Street Tracker by -mek-
« Reply #3 on: November 19, 2018, 01:35:35 AM »
Most of the service, ignored by previous owners, is done. I'm afraid the splines have not been lubed for a long time. They were a bit worn, but hopefully will do still some years. I'm not gonna put so many km's for this bike. Two exhaust valves must be adjusted, but I'm still waiting for the ordered shims. I'll change the brake lines to Probrake Stahflex, but won't do it yet since the front line change requires cooler removal and I've still not got the Samco silicone hose kit yet.

When I get the wheels from powder coating, I'll build the front fender fastening. I also need the wheels for seeing how the bike stands with the new fork springs and Wilbers shock, if I have to adjust the front preload. Just then I'll be able to build the seat fastening to the right position and fit the Leo Vince GP-Style universal muffler to right position.

  • Finland
  • 1992 BMW K75 RT, 2016 Honda CRF 1000 L

Offline Laitch

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Re: K75 Street Tracker by -mek-
« Reply #4 on: November 19, 2018, 10:49:08 AM »
That was a great cinematic touch—sawing in time to music!

I'm afraid the splines have not been lubed for a long time. They were a bit worn, but hopefully will do still some years. I'm not gonna put so many km's for this bike.
Be certain you don't put many kilometers on it. They aren't long for this world. When those tips in the photo break, you'll be stopped in your tracks. It won't take much to break them—drag racing with a restored Lada might do it, maybe even racing with an unrestored Lada. :giggles


 
  • Along the Ridley in Vermont.
  • 1995 K75T 68,000 miles
I wept because I had no radials until I met a man who had no splines.
http://www.motobrick.com/index.php/topic,296.msg53303.html#msg53303

Offline The Mighty Gryphon

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Re: K75 Street Tracker by -mek-
« Reply #5 on: November 19, 2018, 11:38:52 AM »
It will be easier to push with the rear loop intact.
  • In my garage in Marilla, NY
  • '94 K75RT Mystic Red, '92K100RS White, '94 K75S Dakar Yellow
Current:
'94 K75RT "Ilsa, She Wolf of the SS"
'94 K75S "Cheetos"
'91 K100RS "Moby Brick Too

Offline -mek-

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Re: K75 Street Tracker by -mek-
« Reply #6 on: November 26, 2018, 01:03:03 AM »
Fortunately Ladas are nowadays quite rare also here in Finland, so I'm yet not very much worried about the drive shaft splines ;-D If they break, I'll try to get better from ebay.

​Finishing the service. Two exhaust valves must be adjusted. Also got the brake lines changed to steel braided ones. The hose from front master cylinder to ABS is very tightly fitted under the frame, behind radiator. Removed the radiator first, but just when I got also the ECU loosened I got enough space for changing the hose.

https://youtu.be/RQSVvogzA4c​
  • Finland
  • 1992 BMW K75 RT, 2016 Honda CRF 1000 L

Offline Laitch

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Re: K75 Street Tracker by -mek-
« Reply #7 on: November 26, 2018, 06:40:05 AM »
Fortunately Ladas are nowadays quite rare also here in Finland, so I'm yet not very much worried about the drive shaft splines ;-D
Some people have all the luck. :giggles
  • Along the Ridley in Vermont.
  • 1995 K75T 68,000 miles
I wept because I had no radials until I met a man who had no splines.
http://www.motobrick.com/index.php/topic,296.msg53303.html#msg53303

Offline The Mighty Gryphon

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Re: K75 Street Tracker by -mek-
« Reply #8 on: November 26, 2018, 01:17:50 PM »
Some people have all the luck. :giggles

That's probably because the Finns are less enamored of Soviet Communists than the residents of Vermont.
  • In my garage in Marilla, NY
  • '94 K75RT Mystic Red, '92K100RS White, '94 K75S Dakar Yellow
Current:
'94 K75RT "Ilsa, She Wolf of the SS"
'94 K75S "Cheetos"
'91 K100RS "Moby Brick Too

Offline -mek-

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Re: K75 Street Tracker by -mek-
« Reply #9 on: November 27, 2018, 02:11:26 AM »
During the centuries Finns have got 42 wars against Russia, and lost them all. Somehow we still have succeeded maintaining independence. In WWII only 3 capitals of European war parties were not occupied, London, Moscov and Helsinki.

Maybe it's these 42 wars that have rised the Finnish Sisu, guts. Or maybe the secret is .
 :giggles
  • Finland
  • 1992 BMW K75 RT, 2016 Honda CRF 1000 L

Offline Laitch

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Re: K75 Street Tracker by -mek-
« Reply #10 on: November 27, 2018, 03:05:40 AM »
Some notable examples of Sisu-deficiency in this clip.
  • Along the Ridley in Vermont.
  • 1995 K75T 68,000 miles
I wept because I had no radials until I met a man who had no splines.
http://www.motobrick.com/index.php/topic,296.msg53303.html#msg53303

Offline The Mighty Gryphon

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Re: K75 Street Tracker by -mek-
« Reply #11 on: November 27, 2018, 02:08:31 PM »
Where can I get some of that stuff!!!
  • In my garage in Marilla, NY
  • '94 K75RT Mystic Red, '92K100RS White, '94 K75S Dakar Yellow
Current:
'94 K75RT "Ilsa, She Wolf of the SS"
'94 K75S "Cheetos"
'91 K100RS "Moby Brick Too

Offline bocutter Ed

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  • Posts: 620
Re: K75 Street Tracker by -mek-
« Reply #12 on: November 28, 2018, 08:23:23 AM »
  • Toronto, Canada
  • '61 Puch DS60 - '66 Puch 250 SGS - '87 BMW K75s

Offline -mek-

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Re: K75 Street Tracker by -mek-
« Reply #13 on: December 28, 2018, 04:10:05 AM »
Some progress during christmas holidays.

  • Finland
  • 1992 BMW K75 RT, 2016 Honda CRF 1000 L

Offline Laitch

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Re: K75 Street Tracker by -mek-
« Reply #14 on: December 28, 2018, 11:02:46 AM »
Thanks for the updates and videos, –mek–.
  • Along the Ridley in Vermont.
  • 1995 K75T 68,000 miles
I wept because I had no radials until I met a man who had no splines.
http://www.motobrick.com/index.php/topic,296.msg53303.html#msg53303

Offline Skunky

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Re: K75 Street Tracker by -mek-
« Reply #15 on: December 30, 2018, 05:17:24 PM »
Looking good. are you going to cut the tabs with the holes off the tank that were for the fairing ?. Always looks better if you ask me.
  • Derby GB
  • BMW K100lt
Rebuild it and they will come..
90 K100lt
Triumph Thruxton 900
Honda CB400F

Offline billday

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Re: K75 Street Tracker by -mek-
« Reply #16 on: December 30, 2018, 10:40:07 PM »
Sure you don't want to do something about those splines?  I mean given all the time and money you're putting into this bike?
  • New York State, USA 10977
  • 1985 K100

Offline -mek-

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Re: K75 Street Tracker by -mek-
« Reply #17 on: January 02, 2019, 12:50:45 PM »
Sure you don't want to do something about those splines?  I mean given all the time and money you're putting into this bike?

My K will get only a few thousand km's per season, but I will do. I allready got a new, used drive shaft, with good splines. Also looking for final drive at ebay. Will get it when I'll find a one in good condition at the right price. Changing these is omly one hours job, so I allready put the old one on. Won't take the risk for changing just the drive shaft, since the bad final drive spline may harm the good drive shaft spline.
  • Finland
  • 1992 BMW K75 RT, 2016 Honda CRF 1000 L

Offline -mek-

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Re: K75 Street Tracker by -mek-
« Reply #18 on: January 07, 2019, 01:56:58 AM »
I wasn't so happy with the U-shape tube seat mount that I got before christmas. In my mind the seat sat a bit too high from the frame and I found it difficult for fastening hinges and original seat lock. So I let the grinder and drill sing... after few hours I got another solution. It still requires some fine adjusting, but I think it fits better than U-mount.

  • Finland
  • 1992 BMW K75 RT, 2016 Honda CRF 1000 L

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