On Sat, 03 May 2014 08:46:55 -0700, Larry Jaques
wrote:

On Fri, 02 May 2014 20:59:10 -0500, "Lloyd E. Sponenburgh"
lloydspinsidemindspring.com wrote:

Larry Jaques fired this volley in
m:
Vibe tach? Nevahoiduvit. Are they available?


All day long. They're almost a commodity item. Anything with a reliably
repeatable cyclic vibration is a candidate for the method.

Interesting! More research is in the offing.

They even sell sub-$20 elapsed-time meters for gasoline engines that are
only activated when vibrated by the running motor.

Yeah, $13.98 for a vibration hour meter for ATV/cycle/etc. on eBay.
Hour meter and tach are totally different tech togh. The hour meter
just counts time when it is buzzing. No speed info involved.