Ira,
BJ8 tach is electrical, no cable from the distributor drive. So you
would need to simulate the primary circuit through the induction coil of
the tachometer.
Just guessing, a zero to 12 volt square wave at a frequency of something
like:
3000 engine rev/min 1 dizzy revolution
------------------- * ------------------- * 6 cylinder = 150 Hz.
60 sec/min 2 engine revolution
As Kees suggested - in a car would probably be easier.
Cheers,
Bob Haskell
AHCA 3000 MkI registrar
http://www.ciahc.org/registry_3000mk1.php
On 12/24/2017 06:41 PM, i erbs wrote:
> Drill motor connected to cable. Or just spin the cable with your fingers
> to detect movement. If it spins,? could be? angle drive or bad cable.
>
> On Dec 24, 2017 3:08 PM, "Bruce Peters" <rv9aplane at gmail.com
>
> How does one go about testing a tachometer (?67 BJ8) to see if it?s
> functional?
>
> Thanks and Merry Christmas!
>
> Bruce
>
> Sent from my iPad
> _______________________________________________
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