Martin Gregorie wrote:

On Thu, 25 Aug 2005 20:53:43 -0700, rhpf wrote:

I have flown with this instrument, it works well. It will tumble after
several minutes of extreme bank angles.

Would you trust it for that? I'm asking
because I've heard stories that continuous circling would tumble it.

The post you're answering to tells it clearly enough, I think. Extreme
bank angle is a pretty normal attitude in a glider.

The only instrument that will never tumble, by construction principle,
is the needle. So if you're looking for an emergency instrument, install
a classic, gyro driven needle. I wouldn't want to do serious cloud
flying with only a needle in a glass ship, but for an emergency descent
with open spoilers it's good enough.

Stefan