MOTOBRICK.COM

TECHNICAL MOTOBRICK WRENCHING In Remembrance of Inge K. => The Motobrick Workshop => Topic started by: conybeare on April 27, 2012, 06:20:37 PM

Title: Fuel sending unit
Post by: conybeare 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!
Title: Re: Fuel sending unit
Post by: Inge K. on April 27, 2012, 06:30:22 PM
Since -86 all K`s have a sender unit, combined for light and gauge.

Inge K.
Title: Re: Fuel sending unit
Post by: conybeare 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 (http://www.summitracing.com/parts/SUN-CP8219))?
Title: Re: Fuel sending unit
Post by: Inge K. 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.
Title: Re: Fuel sending unit
Post by: frankenduck 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:

Title: Re: Fuel sending unit
Post by: frogy on May 02, 2012, 05:57:34 PM
So that gauge would work with an 85 K100?
Title: Re: Fuel sending unit
Post by: wmax351 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.
Title: Re: Fuel sending unit
Post by: mystic red on May 02, 2012, 06:13:21 PM
Quote from: wmax351 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.

Are you mass producing these? :eek:
Title: Re: Fuel sending unit
Post by: wmax351 on May 02, 2012, 06:47:14 PM
Quote from: mystic red on May 02, 2012, 06:13:21 PM
Quote from: wmax351 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.

Are you mass producing these? :eek:

If there is interest, I will. I can also make some kits.
Title: Re: Fuel sending unit
Post by: Rick G 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.
Title: Re: Fuel sending unit
Post by: wmax351 on May 02, 2012, 08:51:22 PM
Quote from: Rick G 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.

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.
Title: Re: Fuel sending unit
Post by: thebob on May 02, 2012, 09:47:29 PM
Done, if you need a beta tester, I'll help write documentation.
Title: Re: Fuel sending unit
Post by: frogy on May 03, 2012, 07:28:31 AM
Any pics of what it looks like and size ? Size does matter :neener:
Title: Re: Fuel sending unit
Post by: wmax351 on May 03, 2012, 03:53:48 PM
Quote from: frogy on May 03, 2012, 07:28:31 AM
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.