Author Topic: Say hello to Bumly. My 85 K100RT. turned into well, something else.  (Read 27357 times)

Offline MonkeyMcBean

  • ^ Proficient Motobricker
  • Posts: 137
Re: Say hello to Bumly. My 85 K100RT. turned into well, something else.
« Reply #25 on: August 14, 2015, 03:53:04 PM »
lookin' good. Keep up the awesome work.
  • North Dakota, USA
  • 1993 k75s
This is it. F*** it. It is what it is.

Offline dansvan

  • Motobrick Curious
  • Posts: 30
Re: Say hello to Bumly. My 85 K100RT. turned into well, something else.
« Reply #26 on: August 21, 2015, 04:12:53 PM »
Hey thanks! Appreciate it. Did a few more things. Relocated the license plate to the final drive. Built a small splash shield out of the original inner rear fender. Ill see if it grows on me. Installed a used Supertrapp. Matched the patina of the bike well. I like it.
  • Eagle River, Ak
  • 1985 k100rt "Bumly"

Offline MonkeyMcBean

  • ^ Proficient Motobricker
  • Posts: 137
Re: Say hello to Bumly. My 85 K100RT. turned into well, something else.
« Reply #27 on: August 21, 2015, 05:14:56 PM »
I'm having trouble figuring out her far the rearsets moved your pegs. About 3"? Did it move them up at all?
  • North Dakota, USA
  • 1993 k75s
This is it. F*** it. It is what it is.

Offline dansvan

  • Motobrick Curious
  • Posts: 30
Re: Say hello to Bumly. My 85 K100RT. turned into well, something else.
« Reply #28 on: August 21, 2015, 07:57:30 PM »
The originals were slightly in front of and below the front mounting point of the "tri-angle." This set of rear sets moved them up and slightly behind the rear mounting points of the three bolt mounting "tri-angle." The original gear shift lever was here.
  • Eagle River, Ak
  • 1985 k100rt "Bumly"

Offline TrueAce

  • ^ SuperNatural Motobricker
  • Posts: 973
Re: Say hello to Bumly. My 85 K100RT. turned into well, something else.
« Reply #29 on: August 30, 2015, 12:08:57 AM »
You definitely have major skills, and the bike is awesome! In reviewing all your posts covering the build, a few questions for you:
Any issues with the lithium battery? Whats the CCA rating?
What is the can length of the exhaust.......did you cut down a can to get that shorty? Source of the upward connector?
Thanks for the excellent documentation of your build, and for taking time to share it with everybody.
  • Florida
  • '85 K100GS, '85 K100RSSC,', '94 K1100RS,'10 S1000rr,'14 Ural Sidecar, '15 R Nine T

Offline sj2000

  • ^ Proficient Motobricker
  • Posts: 133
Re: Say hello to Bumly. My 85 K100RT. turned into well, something else.
« Reply #30 on: August 30, 2015, 12:38:32 PM »
Question on the rear sets, did you make the link yourself or it comes with the rear set? thanks, the bike looks nice now.
  • Parker, USA
  • 1985 K100

Offline dansvan

  • Motobrick Curious
  • Posts: 30
Re: Say hello to Bumly. My 85 K100RT. turned into well, something else.
« Reply #31 on: August 30, 2015, 04:38:05 PM »
Thanks, been enjoying this project tremendously. No issues whatsoever with the battery. I have no add-ons on this bike just basic what it needs. It has never failed to start it or even show a sign of struggling. I did replace my voltage regulator to try and get the charging voltage up to 14.2 from the 13.2 it had before. I can get about 13.8 constant out of it. No idea on CCA. Their website is very informative. Overall length of the muffler is 13 inches. No I did not cut it down. I built the turn up. I cut apart the factory muffler to gain access to the collector. Then I cut apart an old catalytic converter to gain the stainless tapered oval cone and welded it to the collector. Welded a piece of angled pipe to it and called it good. Not as sexy as some but not 150-250$ either. And I  like building things. The linkage on the rearsets came with them. It would be easy enough to replicate though. Original shifter cut off, drilled and installed how it was needed, a couple small heims and a bent threaded rod would do the trick. I wrapped my exhaust this weekend, will post a pic soon.
  • Eagle River, Ak
  • 1985 k100rt "Bumly"

Offline TrueAce

  • ^ SuperNatural Motobricker
  • Posts: 973
Re: Say hello to Bumly. My 85 K100RT. turned into well, something else.
« Reply #32 on: August 30, 2015, 05:34:34 PM »
Appreciate the feed-back......I am running a 240 CCA lithium battery which I managed to mount in the relay box, with modifications. Folks tell me the lithium won't handle starter duties past nine months, but we'll see. My can-bus equipped BMW's have too many passive drains to keep a lithum charged, but I am building in scrambler mode like you, and there are no drains with my battery kill switch installed. The exhaust you fabed is really sharp, that's the sort of creativity(and skill) that a lot of us wish we had! Shows what you can do other than whip out a charge card. I have cut down the foot-plates as shown in your earlier pic's, rounded with a grinder, & extreme-polished the aluminum. Can't see expensive S100RR rear-sets on a bike this heavy w/ not much hsp.I, too, have the exhaust wrap ready to put on,,,,,using the "titanium". Your build is a real "go-to-school", thanks for sharing; Good Job!
  • Florida
  • '85 K100GS, '85 K100RSSC,', '94 K1100RS,'10 S1000rr,'14 Ural Sidecar, '15 R Nine T

Offline TrueAce

  • ^ SuperNatural Motobricker
  • Posts: 973
Re: Say hello to Bumly. My 85 K100RT. turned into well, something else.
« Reply #33 on: August 30, 2015, 05:37:11 PM »
Appreciate the feed-back......I am running a 240 CCA lithium battery which I managed to mount in the relay box, with modifications. Folks tell me the lithium won't handle starter duties past nine months, but we'll see. My can-bus equipped BMW's have too many passive drains to keep a lithum charged, but I am building in scrambler mode like you, and there are no drains with my battery kill switch installed. The exhaust you fabed is really sharp, that's the sort of creativity(and skill) that a lot of us wish we had! Shows what you can do other than whip out a charge card. I have cut down the foot-plates as shown in your earlier pic's, rounded with a grinder, & extreme-polished the aluminum. Can't see expensive S100RR style rear-sets on a bike this heavy w/ not much hsp. I, too, have the exhaust wrap ready to put on.......using the "titanium" brand w/o spray. Your build is a real "go-to-school", thanks for sharing; Good Job!
  • Florida
  • '85 K100GS, '85 K100RSSC,', '94 K1100RS,'10 S1000rr,'14 Ural Sidecar, '15 R Nine T

Offline dansvan

  • Motobrick Curious
  • Posts: 30
Re: Say hello to Bumly. My 85 K100RT. turned into well, something else.
« Reply #34 on: September 01, 2015, 12:47:22 PM »
Heres a few pics of the wrapped exhaust. Titanium wrap. Was easier to work with than the original style I've used. It did want to unravel a lot on the ends. Overall I am pleased with it.
  • Eagle River, Ak
  • 1985 k100rt "Bumly"

Offline TimTyler

  • Adrninistrator
  • ^ Quintessential Motobricker
  • Posts: 1884
Re: Say hello to Bumly. My 85 K100RT. turned into well, something else.
« Reply #35 on: September 01, 2015, 04:11:03 PM »
What's the purpose of the wrapping?

Offline MonkeyMcBean

  • ^ Proficient Motobricker
  • Posts: 137
Re: Say hello to Bumly. My 85 K100RT. turned into well, something else.
« Reply #36 on: September 01, 2015, 04:31:55 PM »
Looks cool and helps you not burn your ankle.
  • North Dakota, USA
  • 1993 k75s
This is it. F*** it. It is what it is.

Offline dansvan

  • Motobrick Curious
  • Posts: 30
Re: Say hello to Bumly. My 85 K100RT. turned into well, something else.
« Reply #37 on: September 01, 2015, 04:43:10 PM »
In this case, for me, purely visual. My pipes looked ratty. I could clean them up and polish them but thats not the look I was after on this bike. Being stainless and not driven in the rain, stored indoors etc, I am not concerned about rotting the pipes. Just a current trend that I think looks cool too.
  • Eagle River, Ak
  • 1985 k100rt "Bumly"

Offline sj2000

  • ^ Proficient Motobricker
  • Posts: 133
Re: Say hello to Bumly. My 85 K100RT. turned into well, something else.
« Reply #38 on: September 07, 2015, 01:00:57 PM »
Could you post the video of the sound clip of that exhaust? Just curious how loud is it. Thanks.
  • Parker, USA
  • 1985 K100

Offline Mongrel

  • ^ Proficient Motobricker
  • Posts: 205
Re: Say hello to Bumly. My 85 K100RT. turned into well, something else.
« Reply #39 on: September 07, 2015, 02:11:49 PM »
This is honestly the only café K build that I really like.
'86 K75c
'79 Motobecane Mobylette (mothballed)

Offline dansvan

  • Motobrick Curious
  • Posts: 30
Re: Say hello to Bumly. My 85 K100RT. turned into well, something else.
« Reply #40 on: September 07, 2015, 07:26:14 PM »
Thanks for the kind words. I tried to video my db meter app on the phone and it didn't show up. But you get an idea of what it sounds like. keep in mind sound clips on the computer are pretty subjective. Speaker quality, volume etc all play a part. Enjoy!

  • Eagle River, Ak
  • 1985 k100rt "Bumly"

Offline Ianetti

  • Motobrick Curious
  • Posts: 10
Re: Say hello to Bumly. My 85 K100RT. turned into well, something else.
« Reply #41 on: September 09, 2015, 10:21:21 AM »
this is a cool bike but I'm so curious as to what it looks like without the tank cover.... i bet the bronze looks great show us all
  • new jersey
  • 1983 k100

Offline dansvan

  • Motobrick Curious
  • Posts: 30
Re: Say hello to Bumly. My 85 K100RT. turned into well, something else.
« Reply #42 on: September 15, 2015, 02:34:55 PM »
Been super busy here lately and pouring rain. (Insert sad face) Thought I'd share a few links Ive found for the K-bikes. Maybe they could help someone out.

 https://www.etsy.com/listing/233733430/imola-cup-k-base-for-bmw-cafe-racer?ref=related-2      Fuel caps and exhaust collectors.

http://www.k100-forum.com/t8793-k100-collector     another possible collector source

http://www.ludwig-tuning.de/auspufftechnik/bmw-modelle2/hattech2/bmw-k100-k100-rsrtlt-66-kw-hattech-sammler-4-1.html           another collector

https://www.etsy.com/listing/227540934/bmw-k-series-leather-tank-belt-and     Cool leather things for K-bikes

http://www.bikeexif.com/build-cafe-racer    Visual help in styling a cafe racer

http://www.fastfromthepast.com/26-0012  fork braces, clip ons, rearset parts.

Enjoy!

  • Eagle River, Ak
  • 1985 k100rt "Bumly"

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