Author Topic: Fuel sending unit  (Read 18662 times)

Offline conybeare

  • ^ Motobrick Curious
  • Posts: 96
  • Conybrick
Fuel sending unit
« on: April 27, 2012, 06:20:37 PM »
Hi all,

Is there any difference between the fuel sender unit on a k-bike with a proper fuel gauges vs. a k-bike with just the low-fuel warning light?

Thanks!
  • Saint Paul MN
Current:
Nothing :o

Previous: 2004 R1100S, 2009 Yamaha FZ6,1990 K75S, 1986 K75C, 1984 Honda VT500 Ascot, 1981 Suzuki GS250T

Offline Inge K.

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  • Posts: 1451
Re: Fuel sending unit
« Reply #1 on: April 27, 2012, 06:30:22 PM »
Since -86 all K`s have a sender unit, combined for light and gauge.

Inge K.
  • Norway

Offline conybeare

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  • Posts: 96
  • Conybrick
Re: Fuel sending unit
« Reply #2 on: April 27, 2012, 06:36:41 PM »
Gotcha - thanks, Inge.

Does that mean it would be relatively easy to add a universal aftermarket fuel gauge (such as this one http://www.summitracing.com/parts/SUN-CP8219)?
  • Saint Paul MN
Current:
Nothing :o

Previous: 2004 R1100S, 2009 Yamaha FZ6,1990 K75S, 1986 K75C, 1984 Honda VT500 Ascot, 1981 Suzuki GS250T

Offline Inge K.

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Re: Fuel sending unit
« Reply #3 on: April 27, 2012, 06:48:03 PM »
That gauge is meant for a sender with higher resistance, than the one we got in our bikes.
The sender in our bike have the range: 3,5 - 110 ohms....full - empty.

Inge K.
  • Norway

Offline frankenduck

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Re: Fuel sending unit
« Reply #4 on: April 27, 2012, 10:22:15 PM »
Yes, K bike fuel gauges are "backwards" compared to most.  However, you can use a VDO 301-107 with the stock wiring:

Once I had a Collie pup. Dug a hole and covered him up. Now I sit there by the hour. Waiting for a Collie-flower.
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Offline frogy

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  • Posts: 91
Re: Fuel sending unit
« Reply #5 on: May 02, 2012, 05:57:34 PM »
So that gauge would work with an 85 K100?
2002 R1150RT
1985 K100 Naked

Craig

Offline wmax351

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Re: Fuel sending unit
« Reply #6 on: May 02, 2012, 06:06:48 PM »
You could also use my fuel mileage computer, once I get it working. Will be absolutely precise.
  • Albuquerque, NM
  • 91 BMW K75 Standard, 98 Moto Guzzi California EV
Bikes:
Current:1991 BMW K75 Standard, 1998 Moto Guzzi California EV11
Past: '83 BMW R65LS, '75 Honda CB550F, '69 Honda CB175, 1999 Royal Enfield Bullet 500, 1973 Triumph Tiger TR7V, 1971 BMW R75/5 in Toaster outfit, 1979 Harley Davidson XLS-1000 Sportster Roadster

Offline mystic red

  • Retired Professsional Driver
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Re: Fuel sending unit
« Reply #7 on: May 02, 2012, 06:13:21 PM »
You could also use my fuel mileage computer, once I get it working. Will be absolutely precise.

Are you mass producing these? :eek:

Offline wmax351

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Re: Fuel sending unit
« Reply #8 on: May 02, 2012, 06:47:14 PM »
You could also use my fuel mileage computer, once I get it working. Will be absolutely precise.

Are you mass producing these? :eek:

If there is interest, I will. I can also make some kits.
  • Albuquerque, NM
  • 91 BMW K75 Standard, 98 Moto Guzzi California EV
Bikes:
Current:1991 BMW K75 Standard, 1998 Moto Guzzi California EV11
Past: '83 BMW R65LS, '75 Honda CB550F, '69 Honda CB175, 1999 Royal Enfield Bullet 500, 1973 Triumph Tiger TR7V, 1971 BMW R75/5 in Toaster outfit, 1979 Harley Davidson XLS-1000 Sportster Roadster

Rick G

  • Guest
Re: Fuel sending unit
« Reply #9 on: May 02, 2012, 08:20:31 PM »
Depending on price I would be interested and I know of a few others here that would also be interested.

Offline wmax351

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Re: Fuel sending unit
« Reply #10 on: May 02, 2012, 08:51:22 PM »
Depending on price I would be interested and I know of a few others here that would also be interested.

https://docs.google.com/spreadsheet/viewform?formkey=dElJOHotbTFpUTVtSm92aGRqUWZ0aUE6MQ

Fill this out and let me know. I will be making some this summer. I will etch some PCB's myself, but if I get enough interest, I can make an order, and get some professional, CNC ones.
  • Albuquerque, NM
  • 91 BMW K75 Standard, 98 Moto Guzzi California EV
Bikes:
Current:1991 BMW K75 Standard, 1998 Moto Guzzi California EV11
Past: '83 BMW R65LS, '75 Honda CB550F, '69 Honda CB175, 1999 Royal Enfield Bullet 500, 1973 Triumph Tiger TR7V, 1971 BMW R75/5 in Toaster outfit, 1979 Harley Davidson XLS-1000 Sportster Roadster

Offline thebob

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  • Posts: 70
  • K100RS
Re: Fuel sending unit
« Reply #11 on: May 02, 2012, 09:47:29 PM »
Done, if you need a beta tester, I'll help write documentation.
1984 K100RS Japan Motobrick!

Offline frogy

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  • Posts: 91
Re: Fuel sending unit
« Reply #12 on: May 03, 2012, 07:28:31 AM »
Any pics of what it looks like and size ? Size does matter :neener:
2002 R1150RT
1985 K100 Naked

Craig

Offline wmax351

  • ^ Quintessential Motobricker
  • Posts: 1237
Re: Fuel sending unit
« Reply #13 on: May 03, 2012, 03:53:48 PM »
Any pics of what it looks like and size ? Size does matter :neener:

I'll post some up when I get the prototype done. Should be about 3 x 1.5 x 1 inch.
  • Albuquerque, NM
  • 91 BMW K75 Standard, 98 Moto Guzzi California EV
Bikes:
Current:1991 BMW K75 Standard, 1998 Moto Guzzi California EV11
Past: '83 BMW R65LS, '75 Honda CB550F, '69 Honda CB175, 1999 Royal Enfield Bullet 500, 1973 Triumph Tiger TR7V, 1971 BMW R75/5 in Toaster outfit, 1979 Harley Davidson XLS-1000 Sportster Roadster

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