On Jan 23, 9:07*am, brianDG303 wrote:
Anyone got a clue as to how the pictorial T&B works? I don't see how
they can get good data with just accelerometers.

Accelerometers? It will use a MEMS gyroscope. See
http://en.wikipedia.org/wiki/MEMS_gyroscope

(I'll repeat a concern I have about the TruTrak ADI - not the
Pictorial T&B that Brian is asking about. The ADI presents a "vertical
speed enhanced pitch indication". That worries me if you are sucked
into a CB with dramatic up/down drafts or enveloped in a lennie on a
strong wave day. I just don't want to be in a situation of having to
double guess whether to ignore a pitch indication while doing the
instrument scan. Has anybody checked out this behavior of the ADI in a
sailplane in practice?)

Darryl