Author Topic: My Kingdom for a K100RS Right Turn Signal Lens  (Read 352 times)

Offline propav8r

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  • Posts: 76
My Kingdom for a K100RS Right Turn Signal Lens
« on: December 05, 2017, 09:56:07 AM »
Yes, I know, me and everybody else...


I'm looking for a good condition right lens for my K100RS. I did (shockingly) manage to track down an NOS left lens awhile back, but now I'm looking for a right to match. Doesn't need to be NOS, but it does need to be uncracked and have both the screw hole and retainer tab. P/N 46631453002



  • Franklin, NC
  • 1985 K100RS, 1978 GL1000, 1972 Kawasaki H2 750

Offline The Mighty Gryphon

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  • Posts: 2985
  • dyke chik wit attatood
Re: My Kingdom for a K100RS Right Turn Signal Lens
« Reply #1 on: December 05, 2017, 12:17:03 PM »
You may want to just give up on the BMW turn signals, and use after market turn signals and mirrors.  I've seen a couple bikes on the net with them, and they look pretty good, actually more up to date looking than those huge pods attached to the side of the fairing.

These can be attached to the fairing where the mirror pods were with no modifications needed.

https://www.ebay.com/itm/2X-Motorcycle-Universal-Triangle-Flush-Mount-Turn-Signal-Smoke-Amber-LED-Light/202075015108?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2055119.m1438.l2649

You could sell your left lens and buy signals and mirrors with the proceeds.  Sell the mirrors and get a new rear tire.
  • In my garage in Marilla, NY
  • '94 K75RT Mystic Red, '92K100RS White, '94 K75S Dakar Yellow
"Dohn f wit me, honkey, cuz I dindu nuffin'"

Current:
'94 K75RT "Ilsa, She Wolf of the SS"
'94 K75S "Cheetos"
'92 K100RS "Moby Brick"

Past:
'82 Honda FT500, '80 Honda XR185, '78 Honda XL125, '76 Honda XL125, '74 Honda XL125, '71 Ossa Pioneer, '68 Kawasaki 175

Offline propav8r

  • ^ Motobrick Curious
  • Posts: 76
Re: My Kingdom for a K100RS Right Turn Signal Lens
« Reply #2 on: December 05, 2017, 12:19:38 PM »
Nah, I want to stick with the original mirrors and indicators. It's become somewhat of my white whale now.
  • Franklin, NC
  • 1985 K100RS, 1978 GL1000, 1972 Kawasaki H2 750

Offline The Mighty Gryphon

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  • Posts: 2985
  • dyke chik wit attatood
Re: My Kingdom for a K100RS Right Turn Signal Lens
« Reply #3 on: December 05, 2017, 12:29:54 PM »
I hear you.  I want to keep my bikes as original as possible too. 

It pisses me off that after my accident I saw a good pod laying on the ground as well as the mirror glass.  The impact must have knocked them loose, and they landed in the grass of the median.  The EMT's wouldn't let me get them, and the tow truck driver binned them along with taking all my tools(he did leave the empty tool roll, though).
  • In my garage in Marilla, NY
  • '94 K75RT Mystic Red, '92K100RS White, '94 K75S Dakar Yellow
"Dohn f wit me, honkey, cuz I dindu nuffin'"

Current:
'94 K75RT "Ilsa, She Wolf of the SS"
'94 K75S "Cheetos"
'92 K100RS "Moby Brick"

Past:
'82 Honda FT500, '80 Honda XR185, '78 Honda XL125, '76 Honda XL125, '74 Honda XL125, '71 Ossa Pioneer, '68 Kawasaki 175

Offline Jethroww

  • Motobrick Curious
  • Posts: 33
Re: My Kingdom for a K100RS Right Turn Signal Lens
« Reply #4 on: December 05, 2017, 08:46:20 PM »
Hi, Sent a PM.
  • Ontario,Canada
  • BMW 1974 R75/6, BMW 1988 K75s Past: 1972 Norton Commando Combat

Offline Laitch

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  • Posts: 4330
Re: My Kingdom for a K100RS Right Turn Signal Lens
« Reply #5 on: December 08, 2017, 05:54:27 AM »
Nah, I want to stick with the original mirrors and indicators. It's become somewhat of my white whale now.
I hear you.  I want to keep my bikes as original as possible too. 
There is an interesting compromise to be found in this recent k100-forum post.
  • Along the Ridley in Vermont.
  • 1995 K75T 60,000 miles
I wept because I had no radials until I met a man who had no splines.

Offline The Mighty Gryphon

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  • Posts: 2985
  • dyke chik wit attatood
Re: My Kingdom for a K100RS Right Turn Signal Lens
« Reply #6 on: December 08, 2017, 12:57:57 PM »
Here's the whole assembly.  Now that I posted it, you might want to move quickly.

https://www.ebay.com/itm/1991-Bmw-K100rs-K100-RS-Right-Side-Rear-View-Mirror-OEM/253298673187?fits=Make%3ABMW%7CModel%3AK100RS&hash=item3af9c70623:g:xqcAAOSwUYNaKIQt&vxp=mtr

It's been there for a couple days now.  I'm thinking of it as an investment if you don't grab it.
  • In my garage in Marilla, NY
  • '94 K75RT Mystic Red, '92K100RS White, '94 K75S Dakar Yellow
"Dohn f wit me, honkey, cuz I dindu nuffin'"

Current:
'94 K75RT "Ilsa, She Wolf of the SS"
'94 K75S "Cheetos"
'92 K100RS "Moby Brick"

Past:
'82 Honda FT500, '80 Honda XR185, '78 Honda XL125, '76 Honda XL125, '74 Honda XL125, '71 Ossa Pioneer, '68 Kawasaki 175

Offline Chaos

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  • Posts: 1818
  • Mars needs women!
Re: My Kingdom for a K100RS Right Turn Signal Lens
« Reply #7 on: December 08, 2017, 01:37:15 PM »
Here's the whole assembly.  Now that I posted it, you might want to move quickly.


And I thought K75s front blinkers were expensive!  :eek:   I think I'll keep hoarding them until all the cafe coverts regret their decision and the retro stock look is the new hot thing.   :hehehe
1987 K75S    VIN 0231
Original litter & owner
185,000 miles and 5 paint jobs
2012 Ural Gear-Up
(BMW's bastard step child)

Offline The Mighty Gryphon

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  • Posts: 2985
  • dyke chik wit attatood
Re: My Kingdom for a K100RS Right Turn Signal Lens
« Reply #8 on: December 08, 2017, 02:50:53 PM »
That price is actually pretty reasonable for what you are getting.  I've seen the mirror glass go for up to 60 bucks and almost the same for the lens.  This seller is including the mount, housing and free shipping. 
  • In my garage in Marilla, NY
  • '94 K75RT Mystic Red, '92K100RS White, '94 K75S Dakar Yellow
"Dohn f wit me, honkey, cuz I dindu nuffin'"

Current:
'94 K75RT "Ilsa, She Wolf of the SS"
'94 K75S "Cheetos"
'92 K100RS "Moby Brick"

Past:
'82 Honda FT500, '80 Honda XR185, '78 Honda XL125, '76 Honda XL125, '74 Honda XL125, '71 Ossa Pioneer, '68 Kawasaki 175

Offline billday

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  • Posts: 822
Re: My Kingdom for a K100RS Right Turn Signal Lens
« Reply #9 on: December 09, 2017, 09:56:18 AM »
   I think I'll keep hoarding them until all the cafe coverts regret their decision and the retro stock look is the new hot thing.   :hehehe

Wake me up when we get there.
  • 10977
  • 1985 K100

Offline Laitch

  • ^ Quintessential Motobricker
  • Posts: 4330
Re: My Kingdom for a K100RS Right Turn Signal Lens
« Reply #10 on: December 09, 2017, 01:38:18 PM »
Wake me up when we get there.
If you need to go to the bathroom, better do it now.
  • Along the Ridley in Vermont.
  • 1995 K75T 60,000 miles
I wept because I had no radials until I met a man who had no splines.

Offline The Mighty Gryphon

  • ^ Quintessential Motobricker
  • Posts: 2985
  • dyke chik wit attatood
Re: My Kingdom for a K100RS Right Turn Signal Lens
« Reply #11 on: December 10, 2017, 10:12:06 AM »
Well, it didn't last long.  Wonder if propav8r was able to grab it.  I'm pretty sure he'll be waiting a while for the next one if he didn't.
  • In my garage in Marilla, NY
  • '94 K75RT Mystic Red, '92K100RS White, '94 K75S Dakar Yellow
"Dohn f wit me, honkey, cuz I dindu nuffin'"

Current:
'94 K75RT "Ilsa, She Wolf of the SS"
'94 K75S "Cheetos"
'92 K100RS "Moby Brick"

Past:
'82 Honda FT500, '80 Honda XR185, '78 Honda XL125, '76 Honda XL125, '74 Honda XL125, '71 Ossa Pioneer, '68 Kawasaki 175

Offline propav8r

  • ^ Motobrick Curious
  • Posts: 76
Re: My Kingdom for a K100RS Right Turn Signal Lens
« Reply #12 on: December 13, 2017, 11:19:51 AM »
I completely missed this...
  • Franklin, NC
  • 1985 K100RS, 1978 GL1000, 1972 Kawasaki H2 750

Offline alexg

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  • Posts: 36
Re: My Kingdom for a K100RS Right Turn Signal Lens
« Reply #13 on: December 13, 2017, 11:36:39 AM »
With the advances in technology making it to everyday/household turf, could these type of parts be reproduced with 3D light scanning and 3D printing quite cheaply? Even if you have the RHS, scan it, flip it, and produce the LHS.
  • Michigan
  • '93 K75S, 1975 BMW R75/6 & 1984 Yamaha RZ350
Alex G.

Offline Laitch

  • ^ Quintessential Motobricker
  • Posts: 4330
Re: My Kingdom for a K100RS Right Turn Signal Lens
« Reply #14 on: December 13, 2017, 11:49:14 AM »
With the advances in technology making it to everyday/household turf, could these type of parts be reproduced with 3D light scanning and 3D printing quite cheaply?
In previous discussions about this possibility, passing a DOT/MOT inspection might be a problem because the lens will have neither the light dispersing qualities nor the DOT/MOT approval symbol. Many states in the USA have no inspection at all so such a printed lens might work, but in the event of an accident, components might be scrutinized by insurance adjusters for compliance failure.
  • Along the Ridley in Vermont.
  • 1995 K75T 60,000 miles
I wept because I had no radials until I met a man who had no splines.

Offline alexg

  • Motobrick Curious
  • Posts: 36
Re: My Kingdom for a K100RS Right Turn Signal Lens
« Reply #15 on: December 13, 2017, 12:28:08 PM »
The power of combined knowledge! Thanks for the comment. Never thought about compliance at that level.
  • Michigan
  • '93 K75S, 1975 BMW R75/6 & 1984 Yamaha RZ350
Alex G.

Offline propav8r

  • ^ Motobrick Curious
  • Posts: 76
Re: My Kingdom for a K100RS Right Turn Signal Lens
« Reply #16 on: December 13, 2017, 12:28:23 PM »
We have some rapid prototyping capabilities at work, but translucent plastics don't print well. I'm sure somebody, somewhere has production-quality translucent 3d printing capabilities, but then you get to draw up the lens, which would be a feat in itself to really get correct.
  • Franklin, NC
  • 1985 K100RS, 1978 GL1000, 1972 Kawasaki H2 750

Offline The Mighty Gryphon

  • ^ Quintessential Motobricker
  • Posts: 2985
  • dyke chik wit attatood
Re: My Kingdom for a K100RS Right Turn Signal Lens
« Reply #17 on: December 13, 2017, 01:05:55 PM »
The Fresnel angles of the lens are determined by the refractive index of the material used.  Even the density of the material can affect the transmission of light in the desired pattern.  I have seen molded lenses with the wrong density appear opaque to the transmission of light in the required pattern.  Optical properties of plastic lenses can be difficult to control.
  • In my garage in Marilla, NY
  • '94 K75RT Mystic Red, '92K100RS White, '94 K75S Dakar Yellow
"Dohn f wit me, honkey, cuz I dindu nuffin'"

Current:
'94 K75RT "Ilsa, She Wolf of the SS"
'94 K75S "Cheetos"
'92 K100RS "Moby Brick"

Past:
'82 Honda FT500, '80 Honda XR185, '78 Honda XL125, '76 Honda XL125, '74 Honda XL125, '71 Ossa Pioneer, '68 Kawasaki 175

Offline Laitch

  • ^ Quintessential Motobricker
  • Posts: 4330
Re: My Kingdom for a K100RS Right Turn Signal Lens
« Reply #18 on: December 13, 2017, 01:10:55 PM »
The Fresnel angles of the lens are determined by the refractive index of the material used.
I'm going to slip Fresnel angles into the conversation at Sunday's Yankee Swap party. Thanks, Gryph.
  • Along the Ridley in Vermont.
  • 1995 K75T 60,000 miles
I wept because I had no radials until I met a man who had no splines.

Offline The Mighty Gryphon

  • ^ Quintessential Motobricker
  • Posts: 2985
  • dyke chik wit attatood
Re: My Kingdom for a K100RS Right Turn Signal Lens
« Reply #19 on: December 13, 2017, 01:13:17 PM »
The women will surely swoon at your knowledge of the arcane...

...use with discretion.
  • In my garage in Marilla, NY
  • '94 K75RT Mystic Red, '92K100RS White, '94 K75S Dakar Yellow
"Dohn f wit me, honkey, cuz I dindu nuffin'"

Current:
'94 K75RT "Ilsa, She Wolf of the SS"
'94 K75S "Cheetos"
'92 K100RS "Moby Brick"

Past:
'82 Honda FT500, '80 Honda XR185, '78 Honda XL125, '76 Honda XL125, '74 Honda XL125, '71 Ossa Pioneer, '68 Kawasaki 175

Offline alexg

  • Motobrick Curious
  • Posts: 36
Re: My Kingdom for a K100RS Right Turn Signal Lens
« Reply #20 on: December 13, 2017, 02:43:07 PM »
Throw in Schroedinger equations and you are set !!
  • Michigan
  • '93 K75S, 1975 BMW R75/6 & 1984 Yamaha RZ350
Alex G.