BMW K bikes (Bricks)

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1Back to top Go down    Speedo Option on Wed Jan 24, 2018 3:49 pm

Hale_Storm

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Hello all, I am doing a custom build, and want to switch to a smaller speedo. There are a lot of options out there, and prices vary quite a bit. Wondering if anyone has seen these guys? Seems like it has decent reviews, and quite a bit of functionality

https://www.amazon.com/gp/product/B01J5TVRZ8/ref=ox_sc_sfl_title_1?ie=UTF8&psc=1&smid=A1TOO39TOFBL5E

For the price it seems like it might be worth trying...

    

2Back to top Go down    Re: Speedo Option on Wed Jan 24, 2018 8:38 pm

robmack

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That's a fairly decent gauge for the price. I get contacted by many members who are seeking my TGPI board and there are quite a few who have selected this gauge. It is nice that it has an integrated gear display and fuel gauge. These can be adapted to the K-bike.


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Robert
1987 K75 @k75retro.blogspot.ca
2011 Moto Guzzi V7 Racer
http://k75retro.blogspot.ca/
    

3Back to top Go down    I got one. on Tue Feb 13, 2018 7:34 pm

ZonaDevin

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I got one of those a few weeks ago and am having the hardest time wiring it in, I am able to get it to turn on but that's it. Does anyone have a good diagram to map out the connections? The ones that I've found on this forum so far and simply googling it have not worked.

    

4Back to top Go down    Re: Speedo Option on Tue Feb 13, 2018 7:43 pm

robmack

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Check out these documents I've written:

Universal 12000 RPM Wiring Guide
https://drive.google.com/open?id=15CRrZ74KuwMdrZ1FZhfTuxBguhFVAXQF

Koso DL-05SR Gauge - K100 Connections Schematic
https://drive.google.com/open?id=0B3UPbNZRyr1rU0hTVkdhM0VRYTQ

Write-up on modifying the fuel sender to be compatible with this gauge. Use Fuel Sender mode 2.
http://www.k100-forum.com/t9265-messing-with-the-in-tank-fuel-sender


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Robert
1987 K75 @k75retro.blogspot.ca
2011 Moto Guzzi V7 Racer
http://k75retro.blogspot.ca/
    

5Back to top Go down    Thank You!!! on Tue Feb 13, 2018 7:55 pm

ZonaDevin

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@robmack wrote:Check out these documents I've written:

Universal 12000 RPM Wiring Guide
https://drive.google.com/open?id=15CRrZ74KuwMdrZ1FZhfTuxBguhFVAXQF

Koso DL-05SR Gauge - K100 Connections Schematic
https://drive.google.com/open?id=0B3UPbNZRyr1rU0hTVkdhM0VRYTQ

Write-up on modifying the fuel sender to be compatible with this gauge. Use Fuel Sender mode 2.
http://www.k100-forum.com/t9265-messing-with-the-in-tank-fuel-sender
This looks to be EXACTLY what I need!!! Thank you!!! Ill play with it this weekend and let you know how it goes!!

    

6Back to top Go down    Re: Speedo Option on Wed Feb 14, 2018 8:25 am

charlie99

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@robmack wrote:Check out these documents I've written:

Universal 12000 RPM Wiring Guide
https://drive.google.com/open?id=15CRrZ74KuwMdrZ1FZhfTuxBguhFVAXQF

Koso DL-05SR Gauge - K100 Connections Schematic
https://drive.google.com/open?id=0B3UPbNZRyr1rU0hTVkdhM0VRYTQ

Write-up on modifying the fuel sender to be compatible with this gauge. Use Fuel Sender mode 2.
http://www.k100-forum.com/t9265-messing-with-the-in-tank-fuel-sender

top work yet again Rob ...


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7Back to top Go down    Re: Speedo Option on Wed Feb 14, 2018 3:46 pm

chris846

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Oh boy, the speedo of doom....

(A complete electronic hack (me) can get it to work full function btw. Did I mention I own an oscilloscope?)

    

8Back to top Go down    Re: Speedo Option on Wed Mar 07, 2018 10:37 am

Hale_Storm

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@chris846 wrote:Oh boy, the speedo of doom....

(A complete electronic hack (me) can get it to work full function btw. Did I mention I own an oscilloscope?)
That's good... i'm about to dig into setting it up, so i'm glad to hear there's hope

    

9Back to top Go down    Re: Speedo Option on Wed Mar 07, 2018 4:38 pm

chris846

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Rather than throw information at you, let us know where you are at, or what you are stuck on.
Robmack's instructions are spot on viz. operating & programming.

In short, you might need to:

modify/clean up the tacho signal (easy & interesting)

adapt the speedometer signal if using the OE speed sensor (easy), although the speedo of doom does come with its own sender & magnets.

decode/encode the gear position signal

adapt the fuel level sender signal (if you have a fuel level sender on your bike)

modify the indicator signals (if you are using an aftermarket LED flasher relay)

Of course if you don't need all the functions, then you can ignore them. The EASIEST way (although I didn't do it myself) must be to use one of Robmack's units - he's done all the hard work on this one.


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10Back to top Go down    Re: Speedo Option on Wed Mar 07, 2018 4:44 pm

Hale_Storm

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i went the easiest rout and picked up Robmacks "unit"

i did already modify the indicator signal.

I have the old style of fuel level sender, i dont know how it will work...

    

11Back to top Go down    Re: Speedo Option on Wed Mar 07, 2018 4:50 pm

chris846

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'Old style' - is that the unit that just operates the two fuel level warning lights?


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12Back to top Go down    Re: Speedo Option on Wed Mar 07, 2018 5:02 pm

Hale_Storm

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@chris846 wrote:'Old style' - is that the unit that just operates the two fuel level warning lights?
haha, i think its a scientific term... all i know is they changed the design the year after, or maybe even mid year? mine is a 1985

yes, the two fuel level lights is correct. it has been an ongoing battle for the last month, the plastic cap failed and was leaking gas, they dont manufacture the part anymore, i had to buy a bolt with the correct threading, weld a washer to it and drill it out to fit the fuel sender probe thing. it was frustrating

    

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