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Old February 7th 08, 07:16 PM posted to rec.aviation.soaring
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Default Inter-thermal cruise speeds?

On Feb 7, 10:50 am, Frank wrote:
I'm curious what others are using for inter-thermal cruise speeds for
modern 15m (and 18m I guess) gliders like the Ventus 2bx, Ventus 2cx,
ASW-27, ASG-29, Diana 2, etc (add models as necessary).

Here in the U.S. we have been moving toward cruise speeds much lower
than would normally be dictated by using straight McReady settings,
but how low is too low?

I've also been flying a V2bx & V2cxt in Condor a lot, and cruise
speeds there are all over the map, from 90kt to 125kt (fully
ballasted) in the same race/weather conditions, with varying results.


It would seem to depend on a lot on the conditions of the day, right?
How far apart are thermals? How large is the working altitude band?
How strong are the thermals?

I don't fly nearly as high a performance ship, but on a good day with
reasonably well marked 8-12 knot thermals that go to 15,000 feet and
beyond, I'll easily fly 10-15 knots faster between them than on a blue
day when I'm having less luck getting the lift.

Jeremy