Bert,

All the sailplanes, I am aware of, that use flaps for glide-slope control also have ailerons. (PIK-20B, 1-35, Concept 20, the entire Schreder series, etc.) None of the mentioned models' wing control surfaces are full-span flaperons.

Wayne
http://www.soaridaho.com/Schreder


"Bret" wrote in message ...
Hi, do any gliders have full-span flaperons that also act as airbrakes
(say at 70-90 degree), or do you lose all aileron authority when the
flaperons are that deflected?