cavelamb wrote:
Ron Wanttaja wrote:
I've been chasing down some tach-indication problems lately, and as
part of it, I installed a borrowed tach in the Fly Baby. I'm ready to
put the original tach back in, but would like to change the hour meter
to reflect the time that was flown with the temporary tach in place.
The tach is a standard model made by AC.

Opening the tach is non-obvious. There's a set of screws in the back,
but there isn't a big enough opening in the back for the tach innards
to come out of. It looks like the faceplate of the tach needs to be
removed to let guts come out the face, but the faceplate looks like
it's formed around the mounting flange.

Anyone got a hint at how the tach comes apart...for that matter, will
I be able to just manually turn the hour-meter tumblers once the
innards are exposed?

I'm ready to rig up a power drill to turn the thing the old-fashioned
way, but since I'd flown about five hours on the borrowed tach, it'd
take about the same amount of time to run the new tach forward.
Hoping for a quicker solution.

Ron Wanttaja


Simplest way is a log book entry to correct tach time to real time.


Neither being a lawyer nor having seen one on TV I would wonder if
resetting an hour meter without putting an entry into the log would
equivalent a false entry.

Dan, U.S. Air Force, retired