K301 Tach

[OldSkull]

The VDO look promising
Here another one but it's set for 8 pole only, got a adjustable potentiometer to fine tune, direct fit in the dash and 6000rpm reading...Well the price help to forgot some issues.

http://greatlakesskipper.com/bayline...chometer-gauge

I take a open box and save $20
Wish he don't finish in my old stuff museum...

http://greatlakesskipper.com/faria-m...chometer-gauge

[OldCubby]

Originally Posted by OldSkull

The VDO look promising
Here another one but it's set for 8 pole only, got a adjustable potentiometer to fine tune, direct fit in the dash and 6000rpm reading...Well the price help to forgot some issues.

http://greatlakesskipper.com/bayline...chometer-gauge

I take a open box and save $20
Wish he don't finish in my old stuff museum...

http://greatlakesskipper.com/faria-m...chometer-gauge

I'm not sure how well those tachs will work. Especially with it stating 8 poles and I'm not sure if it has potentiometer to fine tune it.

[OldSkull]

We will see in few days! I pull the trigger for one and he should has a fine tuning potentiometer, they all do! Some are internal and you need to open the case. I'm the guinea pig here, left me all the risky fun part

This one look pretty similar to the VDO and Kirk unit but your can read "Deutz" in the counter. Asking price $50 :-)
If he work this can be the best deal out there.

http://www.ebay.com/itm/VDO-Cockpit-...-/251504700247

[OldCubby]

Originally Posted by OldSkull

We will see in few days! I pull the trigger for one and he should has a fine tuning potentiometer, they all do! Some are internal and you need to open the case. I'm the guinea pig here, left me all the risky fun part

This one look pretty similar to the VDO and Kirk unit but your can read "Deutz" in the counter. Asking price $50 :-)
If he work this can be the best deal out there.

http://www.ebay.com/itm/VDO-Cockpit-...-/251504700247

I bought one from across the pond....I'm waiting for Christmas to arrive LOL Mine should be here in a week or so. I am wishing I had waited. I think these VDO gauges will work just fine.

[R Bedell]

I further researched the Durite 0-525-10 with the company. Tech support responded back by saying it will NOT working with a Kohler single cylinder engine. Their tach was designed to work with an "alternator".

[Calvins66Cub]

FWIW, I emailed Autometer shortly after this thread started. I was curious if they would consider modifying their : Auto Meter 2697 Z-Series, to work for our application. It's been a week, no response. I tried.

However, if one of you guys buys one that just doesn't work as expected, I play around with Arduino micro-controller electronics. If you would lend me the unit for a donor, I would experiment making a custom adapter "black box" that would make it work properly. If I succeed, free to you (donor). Then I would have a solution for the rest of us.

J-mech has seen some of my tinkerings. I expect he would vouch for me.

[darryljs]

Originally Posted by Calvins66Cub

FWIW, I emailed Autometer shortly after this thread started. I was curious if they would consider modifying their : Auto Meter 2697 Z-Series, to work for our application. It's been a week, no response. I tried.

However, if one of you guys buys one that just doesn't work as expected, I play around with Arduino micro-controller electronics. If you would lend me the unit for a donor, I would experiment making a custom adapter "black box" that would make it work properly. If I succeed, free to you (donor). Then I would have a solution for the rest of us.

J-mech has seen some of my tinkerings. I expect he would vouch for me.

If you like to tinker, here's an idea. Auto Meter is pretty expensive to tinker with. Sooooo....... Find a cheap tach, you can find some for around $12 or $13, doesn't matter if it's a 4000 or 8000 rpm for experimentation, as long as it can hook to the coil. The way these tachs work is basically a timer circuit, it reads a frequency. You could build a tach circuit with a 555 timer IC. But the board in the tach already has a timer IC. Soooo ......... it will have a switch for 4, 6, 8 cylinder. From the switch position for the 4 cylinder, that trace that goes to the IC has a resistor in between. If you put a variable resistor in it's place you can tune it to what you need. For a 1 cylinder, the resistance will be less than original resistance for the 4 cylinder. After you tuned it to the resistance that makes the meter read the correct value, replace the variable resistor with that resistance, you can use 1/8 watt resistors.

Don't know why the manufacturers can't easily add this unless it's $$$$$$.

[sbauerz28]

Dakota Digital makes a tach convertor. I think the part number is SGI-8. I used one on my Trans Am I put a LS1 engine in. The LS1 pcm puts out a 4 cyl. tach signal and the gauges are set to read a 8 cyl. tach signal. I will have to look now because I'm curious if it could be used for 1 cyl. engines.

[OldCubby]

Originally Posted by R Bedell

I further researched the Durite 0-525-10 with the company. Tech support responded back by saying it will NOT working with a Kohler single cylinder engine. Their tach was designed to work with an "alternator".

The fella on this forum "wheelhorseforum.com" used a durite tach and connected it to one of the leads on his voltage regulator and his worked. He adjusted it using a digital hand held tach reader. Even though we don't have an 'alternator' per say, we have a stator, in all sense and purposes is an alternator.

http://www.wheelhorseforum.com/topic...r-onan-kohler/

[R Bedell]

I further researched the Durite 0-525-10 with the company. Tech support responded back by saying it will NOT working with a Kohler single cylinder engine.

I would like to expand and clarify. This is meant for single cylinder Kohlers that utilize a Starter/Generator system.