"Eric Greenwell" wrote in message
...

Yikes! I don't know what you are flying, but it takes my ASH 26 about 27
seconds to make one turn (50 kts IAS, 8000' msl, 8.2 lb/sq ft wing
loading). That's measured from a flight trace. My ASW 20 was a little
quicker, flying at 7.5 lb/sq ft, but nothing like 14 seconds.

You might re-check your bank angle and your static port position error. 27
seconds seems too long.

I fly a Nimbus 2C and I do turn tight. At 6lbs PSF I usually thermal at
45-55 degree bank at 40 MPH. I checked the elapsed time with the sweep
second hand on the panel clock. At 11 PSF the 45 degree bank Vmin sink goes
up to 55mph or so. (One of these days, I'll get an ASI in knots.)

Although, I did look at some flight recorder traces of the Nimbus thermaling
at 17,999 feet on a hot summer day with the ballast tanks full. The turns
were 2000 feet in diameter.

OTOH, a good 1-26 driver can rip off a 360 in 10 seconds.

How did the 302 compare, what did you have the time constants set at,
and where you judging by the needle or the audio?

I didn't check the 302.


I'm guessing the hard part for an inertial vario would be ignoring stick
thermals.

TE compensation can be done by the same computer that integrates the
acceleration.

Bill Daniels