wrote in message
oups.com...
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


The Republic SeaBee uses a handpumped hydraulic system to drive the flaps.
They have a separate hydraulic cylinder for each flap. The flaps tend to go
down one at a time! Fortunately, the split flap condition is easy to handle
and doesn't cause a great deal of roll tendency.

Many GA airplanes use hydraulic flaps. Mooney and Piper Apache/Aztec come
to mind immediately. Look at the system in a Mooney. It has worked well
over the years.

Highflyer
Highflight Aviation Services
Pinckneyville Airport ( PJY )

PS: Annual Pinckneyville rec.aviation flyin is coming up friday, saturday,
and sunday. Let us know if you are planning on coming by emailing Mary at
so she knows how many steaks to buy.