[OldCubby]

Originally Posted by twoton

You notice that in Dave Kirk’s,” Building a Hot-Rod Kohler K301”;

http://www.kirkengines.com/downloads...ohlerPartI.pdf

On the bottom of page 11, “This shows the right side of the engine where the Mercury outboard voltage regulator replaces the stock item. This contains the tach driver circuitry for the instrument panelmounted Datcon tachometer.”

I believe that different tachs are triggered by different means. Some like a timing light, “inductive tachs” may be listed as being for 2,4,6 or 8 cylinder engines but may, ( Please correct me if I'm wrong here) be used in other cylinder configurations, like single cylinder, as long as it is being triggered from the proper source.

There’s this one,

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



don’t know how these are triggered.

And from Datcon;

http://www.datcon.com/en-US/Products...chometers.aspx

part way down on the page, P/N 106461.

I'm going to look into this Mercury outboard voltage regulator with the built in tach circuitry.