Speedometer and Tachometer solutions

Rev Counters, Speedo's, etc..

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Speedometer and Tachometer solutions

Postby Tetronator » Sun Jul 19, 2015 6:51 pm

So I was thinking it might be good idea to put all speedometer and tachometer solutions for our diesel bikes onto a list. (Also because I will need them...)

Speedometer:
Stock gear driven/electronic set up (do not change anything)
GPS
Bicycle speedometer (magnetic pickup from a wheel spoke)

Tachometer:
Stock gear driven from engine, if you've got one.
Inductive alternator pickup (https://www.youtube.com/watch?v=HhLPAPZxNsM)
TinyTach injector line pickup (http://www.tinytach.com/installation-diesel.php)
Direct Alternator pickup (Not sure how this works...)
Bicycle speedometer transformed into tachometer (http://www.instructables.com/id/Tachometer-made-from-a-bicycle-speedometer-cycloc/)

So if anyone has any solutions please post them, I will add them to this post.
Last edited by Tetronator on Mon Jul 20, 2015 12:21 pm, edited 1 time in total.
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Re: Speedometer and Tachometer solutions

Postby sbrumby » Sun Jul 19, 2015 9:36 pm

Far the easiest solution for a tach is to get an electronic tach off any bike and fit a prox switch, this can be signalled off anything on the external of the crankshaft ie. a woodruff key or a nut or a bolt, anything as long as its not stainless.
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Re: Speedometer and Tachometer solutions

Postby Tetronator » Mon Jul 20, 2015 11:15 am

sbrumby wrote:Far the easiest solution for a tach is to get an electronic tach off any bike and fit a prox switch, this can be signalled off anything on the external of the crankshaft ie. a woodruff key or a nut or a bolt, anything as long as its not stainless.


You mean signaling via an magnetic pick-up? I can't find any such proximity switches.
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Re: Speedometer and Tachometer solutions

Postby UAofE » Mon Jul 20, 2015 11:41 am

You could use a bicycle speedometer to function as a tach, you just need to set the "tire size" to 268mm for MPH or 167mm for KPH.
http://www.instructables.com/id/Tachome ... er-cycloc/
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Re: Speedometer and Tachometer solutions

Postby Tetronator » Mon Jul 20, 2015 12:20 pm

UAofE wrote:You could use a bicycle speedometer to function as a tach, you just need to set the "tire size" to 268mm for MPH or 167mm for KPH.
http://www.instructables.com/id/Tachome ... er-cycloc/


That's a really nice temporary or emergency solution, thanks!
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Re: Speedometer and Tachometer solutions

Postby sbrumby » Mon Jul 20, 2015 12:23 pm

on ebay electrical and test equipment type in proximity sensor , 1800 results about £3.50 each.
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Re: Speedometer and Tachometer solutions

Postby UAofE » Mon Jul 20, 2015 12:24 pm

I have a tiny tach but its slow to update, inconsistent, looks terrible on a motorcycle and the head unit isn't water resistant.
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Re: Speedometer and Tachometer solutions

Postby Tetronator » Mon Jul 20, 2015 12:31 pm

sbrumby wrote:on ebay electrical and test equipment type in proximity sensor , 1800 results about £3.50 each.


Well, I haven't tried that, thanks!

UAofE wrote:I have a tiny tach but its slow to update, inconsistent, looks terrible on a motorcycle and the head unit isn't water resistant.


Is it? I myself want an analogue style tachometer, but I guess it's the easiest solution without having to fabricate anything.
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Re: Speedometer and Tachometer solutions

Postby Eddy Wane » Mon Jul 20, 2015 9:06 pm

In one of my posts I mentioned using the same type of proximity switch as I use when I fit taximeters. By far the simplest is a Hall Effect transistor and a small magnet which can be fixed to any rotating part to either give miles/kilometres per hour or RPM depending on what type of display you use. One of the switches I use has an LED as a comfort light (if it flashes it shows 1. It is getting power. 2. It is pulsing/counting. 3. It is working.

The other main sensor is an ABS sensor which by design is waterproof and robust and used as the VSS (vehicle speed sensor) as well as the brakes.

As you can imagine there are lots of vehicle sensors that can be pressed into service for use on a diesel bike. If I can find the circuit I will post the speed pulse information.
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Re: Speedometer and Tachometer solutions

Postby dieselbikin » Fri Aug 14, 2015 12:37 am

Speaking of anything GPS, met modern smart phones have it. There are many free apps that will track your avg speed, distance and time. I just downloaded one called downhill social for my iPhone that I think will work well.
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Re: Speedometer and Tachometer solutions

Postby UAofE » Fri Aug 14, 2015 1:00 am

Speedometer is only $2. I use it frequently, especially on long trips.
https://itunes.apple.com/us/app/speedom ... 29008?mt=8
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Re: Speedometer and Tachometer solutions

Postby Tetronator » Fri Aug 14, 2015 8:15 am

Yeah, I'm using this to get my donor motorcycle trough the import tests.

https://play.google.com/store/apps/details?id=com.mapfactor.navigator&hl=en

All-tough I'd like a more permanent solution for the speedometer.
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Re: Speedometer and Tachometer solutions

Postby dieselbikin » Fri Aug 14, 2015 6:15 pm

My tiny tach didn't last very long. My sendec rotating shaft tach has been very rugged.
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