|
Dave S asks:
> If you get your tach signal from your Engine Controller, and your
> engine fails because the electrical system or the engine controller
> goes kaput, then it is very likely you will not have a tach signal.
> (this was the scenario explicitly discussed in the flyrotary listserv)
OK - I guess then you're SOL using the tach :-).
> How does the traditional a/c engine do it... hall effect on the
> flywheel? Direct drive tach cable?
My Lyc. has two choices - either a mechanical cable (which I have capped
off), or a tap off the magneto P-lead (that's what I use). I guess if
that one mag died, I would lose tach signal, too.
I guess I was thinking that the engine died from fuel exhaustion, or
throwing a rod or something. If the electrical thing that supplies the
tach signal croaks, then yeah, that's toast.
> Some kicked around the idea of a rear view mirror someplace.. or an
> optical tach of sorts..
I keep a small pocket mirror in the map pocket to look at my fuel gauges
in the back seat - I think I could see the prop with it.
--
Marc J. Zeitlin mailto:marc_zeitlin@alum.mit.edu
http://www.cozybuilders.org/
Copyright (c) 2006
|
|
Re: monitoring pusher props
