Arnold Pieper wrote:
Therefore, if you're maintaining the correct Speed in the traffic pattern,
you can (and SHOULD) bank the glider as appropriate for the turn. ALWAYS.
There is no exception.

A glider will not Stall/Spin from a coordinated turn with the proper speed.

This begs the question: a glider will NOT stall/spin from an
UNcoordinated turn with the proper speed, either.

It will do so always from an uncoordinated turn, usually with the Wings
close to level in a skidding turn and the stick aft.
Remember what I said about Wings level and the stick full aft.

I've routinely stalled our club's Blanik from coordinated turns, and
other gliders, too. Establish a shallow banked turn (10-15 degrees,
say), then simply slow down while maintaining a coordinated turn. At
some point, the inner wing falls and the spin begins.

Coordination is important, but not sufficient to protect you from a spin.

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Eric Greenwell
Washington State
USA