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1Back to top Go down    Aftermarket speedo on Thu Jun 16, 2016 8:12 am

6strings

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I'm looking to put an after market speedometer on my bike, currently like this one:
http://www.dimecitycycles.com/black-acewell-2853-digital-speedometer-and-tachometer.html

I know theres a neutral start lock out or something I have to figure out, does anyone have suggestions or diagrams.

I wouldn't actually take this on, except my speedometer and tachometer have both stopped functioning, after a couple years of intermittent function, and the gas gauge has never worked since I've owned the bike. I've read that the Speed sensor is not available anymore so, just trying to come up with an alternative.

    

2Back to top Go down    Re: Aftermarket speedo on Thu Jun 16, 2016 5:03 pm

Dai

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You say 'intermittant function'. Daft question - have you tried taking them apartr and cleaning the contacts (spikes) that hold the whole lot together?


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'83 K100 upgraded to K100RS spec
Others...
'78 Moto Guzzi 850-T3, '79 Moto Guzzi 850-T3 California,'93 Moto Guzzi 1100ie California,
'03 Suzuki Blandit GSF600SK3 (NFS any more because wifey has claimed it)
    

3Back to top Go down    Re: Aftermarket speedo on Thu Jun 16, 2016 9:11 pm

6strings

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Yeah I've had it apart a number of times, the problems still persists. The speedometer doesn't work at all and the tac just goes up and down, and not in relation to motor revs, it goes all the way to the max and then drops all the way back to zero, up and down, the whole time the bike is running, even at idle. the motorcycle has 103,268 miles on it, so it doesn't seem all too crazy to think they are just worn out. I have a buddy who has been riding his K100rs for five or six years just using a gps to monitor speed, because his was doing the same thing, his bike has 160,000 or so miles on it. I however would like to get and install a new type as I have altered the physical appearance of the bike considerably." />

    

4Back to top Go down    Re: Aftermarket speedo on Thu Jun 16, 2016 9:15 pm

6strings

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sure wish i could figure out why my photos always turn out sideways as well

    

5Back to top Go down    Re: Aftermarket speedo on Thu Jun 16, 2016 9:25 pm

RicK G

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For the speed sensor get a K1100 and change the plug. As for sideways photos are you using an iPhone, that seems to be the problem most of the time. Please dont ask me how to fix it as I don't have an iPhone.


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If everything seems under control then you aint goin fast enough:- Mario Andretti
Bikes 1986 K100RT, 1993 K1100 LT, 1994 K1100 LT, 1993 K75 RT, 1996 K75RT, 1986 K75 GS, 1979 Z1300 Kawasaki X 2 & 1976 SR 500 Yamaha for now
    

6Back to top Go down    Re: Aftermarket speedo on Thu Jun 16, 2016 9:58 pm

Gaz

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I use my iPhone to take photos when out and about. I typically upload the photos I want to use on the forum direct to servimg.com from the phone. If it comes out sideways on servimg.com I then go to Edit in Photos on the iphone, turn the photo 90 degrees and save it, then edit it again and turn it back to how I want it and save again. When uploaded to servimg.com it will be how you want it.

Sounds like a bit of messing around but once you've worked it out it only takes a couple of seconds. This doesn't happen on every photo and I have never bothered to try to work out why it happens once I had the work around.

I then typically do my posts from a computer at home or from the iPad if I'm travelling.

Cheers


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Gaz
95 K1100LT 0232224; 90 K75 6427509; 87 R80G/S PD 6292136
    

7Back to top Go down    Re: Aftermarket speedo on Fri Jun 17, 2016 5:06 am

charlie99

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6strings wrote:I'm looking to put an after market speedometer on my bike, currently like this one:
http://www.dimecitycycles.com/black-acewell-2853-digital-speedometer-and-tachometer.html

I know theres a neutral start lock out or something I have to figure out, does anyone have suggestions or diagrams.

I wouldn't actually take this on, except my speedometer and tachometer have both stopped functioning, after a couple years of intermittent function, and the gas gauge has never worked since I've owned the bike. I've read that the Speed sensor is not available anymore so, just trying to come up with an alternative.

robmac in here has the lockout - gpi decoder circuit already made for such devices

not hard at all to incorporate at all

have a look around with the search engine ....

or have a look here http://www.k100-forum.com/t4708-gear-indicator-for-aftermarket-speedometer-and-other-circuits

there have been a few discussions on gear decoding for the neutral switch function
including using a r1100 ? switch assembly on the gearbox to simplify matters

but I recon robs solutions are the simplest to hand so far


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'86 K100 RT..#0090401 ..."Gerty" ( Gertrude Von Clickandshift ) --------O%O
    

8Back to top Go down    Re: Aftermarket speedo on Mon Jun 20, 2016 12:36 pm

KJustin

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There's a thread in the cafe build section that deals with installing this speedo.http://www.k100-forum.com/t2611-my-k100-cafe-racer-project-story. Should get you most of the way there. I installed this unit on my bike following these instructions. I didn't build the neutral light circuit with relays. Instead I purchased a circuit board from Robmac that took care of that (and also reads the stock gear position indicator to tell you what gear you are in). He may be sold out now...not sure, but I think I got the last one of his most recent run.

Two things are missing from the thread, though. First, you may need an "exciter" light (or, alternatively, some resistors) to get the alternator working. There are other threads about this. In my case my alternator had enough residual magnetism to work without the exciter light, but I've been told that that's not a sure thing. I ultimately put one in after the fact.

Second, I couldn't get the tacho to work properly. It jumped all over the place. I eventually built a filter circuit for it. I found the instructions on the motobrick forum at http://www.motobrick.com/index.php? topic=6814.0. I used the circuit in reply 4. The simpler one in reply 2 of that thread gave only limited success (though I understand it has worked for some).

Good luck!


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1985 K100 Cafe Racer (formerly an RT), VIN 0051736
    

9Back to top Go down    Re: Aftermarket speedo on Tue Jun 21, 2016 12:02 am

robmack

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KJustin wrote:Instead I purchased a circuit board from Robmac that took care of that (and also reads the stock gear position indicator to tell you what gear you are in). He may be sold out now...not sure, but I think I got the last one of his most recent run.
I'm producing more boards. I have parts stocked again and am working through the soldering and testing. Takes me about 1 evening per board to build and test; slow going. This is my "electronics workbench" where I build the boards, if interested:


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

10Back to top Go down    Re: Aftermarket speedo on Tue Jul 05, 2016 12:19 am

6strings

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I am interested, let me know when you have them ready. I would certainly want to purchase one if they are not spoken for already

    

11Back to top Go down    re on Sun Sep 25, 2016 12:16 pm

6strings

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Still haven't installed the speedo and the PCB I got from Robmack. I guess it'll be a winter project. I got sidetracked when I unexpectedly ran across a great deal on a 1996 R1100R that had been converted to a R1100GS. Paid $1000 for it, and although I need to work on the ABS system some, the bike is a riot, I can't believe how much torque it has, I've never ridden any R models other than the 1982 R65 I used to own, It was a powerless little thing.

    

12Back to top Go down    aftermarket speedo advice? on Wed Jan 25, 2017 4:31 pm

FreyZI

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Greetings. Reviving a thread here. I'll be installing new gauges on my cafe/brat K100 as soon as I figure out which unit I should get. Nothing wrong with the old gauges, as far as I know, other than being enormous ("brick" could just as easily describe that unit). Looking through this thread, I see that wiring new gauges could be pretty involved. Can anyone tell me if they've had success with any particular unit? Is there anything I should look for in a new unit? Longer wires would seem to be a bonus.
Thanks!

    

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