John Slade wrote:
>
> Are you 13B flyers using engine tach, or is there some way to get a tach to
> read prop rpm? I've heard there's an electronic sensor which reads a passing
> magnet, but I havent found one yet.
> Regards,
> John Slade

The simple solution is a 'prop-tach' available from suppliers like Wag-Aero &
A/C S&S for $50-100 or from hobby shops for around $30. They use an optical
pickup, not a magnetic one.

Charlie