wrote:
I was talking to a fellow that had a hydraulic flap actuator (hand
pumped) with a quick release return on a Top Cub. Anybody know of a
good source for these hand pumps? Any listers used something similar
for flaps and what did you think about it both in construction and
function?

I've thought of something like a floor jack pump but they're all too
heavy and have too short of travel. I need something with more throw
and less force and preferably made out of aluminum.

Joa

McMaster-Carr has some hand-actuated hydraulic pumps. Browse around
Mcmaster.com and see if there's anything suitable.
You might also look at the article at the Schreder sailplanes website.
http://www.soaridaho.com/Schreder/Co...rctn_tips.html
About halfway down, there's a two-piece article on hydraulic flaps.

Tim Ward