Eric,
My Westerboer seems to have a higher sensitivity around Zero than
further up. It's hard to describe the tone it makes which is very
pleasant to the ear, in German we call it a Dreiklang. It all combines
to flying comfortably in weak lift at 500-700 ft while looking for a
landing spot, watching airspeed and attitude. I wouldn't want to do
that with a (silent) mechanical vario.
The vario is so sensitive, when you open the canopy to which the panel
is attached, it sings it's 'up' song.
Herb, J7


Eric Greenwell wrote in message ...
Herbert Kilian wrote:

Curt,
Consider an electric audio vario like the Westerboer 911 vs. any
mechanical instrument (incl. Sage, way overrated).
- The Westerboer has pressure transducers so it doen't need a flask.
- Mine is just as sensitive as my Cambridge 302, they move in perfect
sychronism.
- You only connect 12V and your TE tube to the instrument.
- The tone is very pleasant, nicer than the Cambridge and of course
you can turn it down
- When the going gets tough, I switch to the Westerboer, better in
really weak lift

I agree with Herb that a mechanical vario is pointless unless you don't
have any batteries at all. Even a battery to weak to operate a radio
still has enough power for a vario.

So, Herb: what features of the Westerboer make you like it better in
weak lift?