Ratio of Hobbs to Tach for instruction w/tower

On Sat, 03 Jan 2004 22:41:13 +0000, Ben Jackson wrote:

It does have a Hobbs meter. But plane costs are mostly in units of Tach
time. At a towered airport you (probably?) spend more time taxiing and
therefore accumulate more Hobbs time per unit Tach.

I assume you mean maintenance since that's about all done with tach time,
where rentals are usually based on Hobbs time, if the plane has one of
those. The reason is that the rental makes more money since the Hobbs
will indicate a higher number than the tach. This is a benefit when it
comes to paying for your maintenance.

I've almost never rented a plane based on tach time unless the Hobbs was
not working right, but then most of the planes I rent have a Hobbs meter
and you can see why they'd want to use it's figure.

You're correct in that at towered airports you'll log more Hobbs time than
tach time, but those have been the breaks for me. I know of no planes
around here that use the tach for anything beyond maintenance.

Out of curiosity, why are you trying to figure the ratio anyhow? It
varies at each airport depending on how far from the hangar to the ramp or
runway you are, how long you warm it up, etc.

Based on your website, are you planning on getting back into flying, or is
your site just not updated, kinda like how I do mine?