You have mentioned Tiny Tach before , Larry. They seem pretty impressive,
and now the diesel model.
Are they very accurate?

"Larry" wrote in message
...
"boater435" wrote in
ups.com:

I belive my tach is not reading properly. I have an albin 27 family
cruiser with a lehman diesel the rpms seem to exceed the redline by
alot 500 to 800 rpm (guessing) the tach stops at 4100. I don't think
the engine would go this high. I am trying to find something to check
the rpms so I can calibrate the tach or repitch the prop. Any help
would be appreciated. Paul, Cape Cod, MA



Dump it. Put in a $65 TinyTach! Here's the diesel model:
http://www.tinytach.com/tinytach/diesel.php

Even keeps up with engine hours, automatically. Runs 24/7 for a whole
year
on ONE 9V battery...(c;

--
Larry

"Garland Gray II" wrote in
news:NF7Se.106075$Ep.86997@lakeread02:

You have mentioned Tiny Tach before , Larry. They seem pretty
impressive, and now the diesel model.
Are they very accurate?



Digital....it's a pulse counter. It's as accurate as your quarts
wris****ch.

The first model was created for toy engines....jetskis, snow mobiles,
motorcycles, etc. I had one I transferred from jetski to jetski. It
didn't even connect to the engine! You wrapped its little antenna wire
around a spark plug wire and told it how many cylinders your engine had.
It picked up the pulses by capacitive coupling. Those had watch batteries
in them I don't ever remember replacing. The diesel models must have to
use a little more power, hence the 9V or DC power connection.

--
Larry