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Message
Yes, Please, Todd. I
have the Tiny Tach, but it is true to it's name. I'd rather install a 3 inch
circular one.
Rusty said I'd need
to divide by 12 to use the EC2 output. Right?
How much?
3 inch tach!!! John, I think
what you really need is some glasses
:-)
For the record, since the
tiny tach expects one pulses per revolution, you'd have to divide by 12 to get
the proper reading if you hooked it up to the tach output. I don't think
that would be the best way to hook a tiny tach up
though.
Most normal tachs come with a switch, or
some other method of setting the number of cylinders, and the choice is usually
4,6, or 8. Since 4 cycle engines fire half of their cylinders on every
rotation, the tach expects to see half the number of cylinders pre
rev. If you use the tach output of the EC-2 for a normal, off the
shelf tach, you'll have to divide as follows:
4 cylinder setting, 2 pulses per rev,
divide by 6
6 cylinder setting, 3 pulses per rev,
divide by 4
8 cylinder setting, 4 pulses per rev,
divide by 3
Now that I think about it, what the heck
does that Geo 3 cylinder engine do :-)
Rusty (it's too
early)
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