RW> RW> sd>> silly question, but what's a 2 piece tach? (the tach I have
RW> RW>> on my 55 Chevy...Basically, there was a solid state unit
RW> JS> Yup, except it wasn't really solid state, it was an
RW> JS> electro-mechanical kinda deal. No transistors in the early ones. When
RW>The two piece I remember didn't have anything in the way of any mechanical
RW>hook ups.  Unless your talking about the tach that was driven off the back
RW>of the generator, in which case, it was all mechanical. Anything else was
RW>solid state devices.
RW>Can you espound on the electro-mechanical kinda deal?
I wish I could .....
The one I had didn't have any mechanical connection to the motor, it
hooked up to the coil wire just like an late model tach, but I don't
think the sender unit had any transistor stuff inside (this was the late
'50s/early '60s). (I think I would have noticed 'cause I was into
electronics then ... ) All I remember was basic (passive) electrical
components, coils, resistors, maybe diodes, and a battery you had to
replace every once in a while ....
As I recall, solid state tachs came a little later and were one piece,
although there may have been two-piece solid state tachs that I don't
remember. You can sometimes still find the old 2-piece models at swap
meets ....
Jackson
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 * SLMR 2.1 * Speed costs money - How fast can you afford to go?
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