Mine stalls at about 50 mph indicated. I've checked the airspeed with
a GPS and it is within 1-2 mph
after "boxing" the compass. I use 70 mph as my approach speed.
Dan Caliendo
Ercoupe Mach 0.14
3658H
On Aug 14, 2009, at 4:30 PM, [email protected] wrote:
It's pretty much as Mike says. I did power on stalls and power off
stalls on Thursday afternoon. Just me and full tanks, so probably
around 1250# at 3500'. The power off stall basically consisted of
the airplane settling into a "mush" of about -200 FPM VVI, with
full aft yoke, and then if you held it there, it would eventually
have a very gentle straight-ahead break that flew itself out. The
ASI showed 64 MPH. Power on was about the same, except for the
right wing dropping when it broke, but still pretty gentle. Once
again, it indicated 64 MPH when stall occurred. I spoke to Mike,
and this was consistent with what he saw. He said that if you get
below 70 MPH indicated at a high AOA/pitch attitude, you are
definitely approaching stall. But he also said that 70 MPH
indicated in a descent or low AOA would not be close to stall. His
belief that the airspeed reads high at high angles of attack due to
the way the airflow hits the pitot tube makes sense but I will
still check out the airpseed readings on a calm morning using the
GPS and "boxing the compass" at around 70 MPH when I get home from
my UPS trip in a couple weeks.
Thanks,
Dave
--- In [email protected], si...@... wrote:
>
> N3041H is a D model in E configuration. It has a split elevator
with the 20
> deg up and 10 deg down rigging. The pitot was set at 3 7/8". on
straight
> and level the airspeed appeared to be within 5 kts accurate but
in a high
> incident stall climb the indicated speed appeared to be high.
>
> Mike Sigman
> Prior owner.
>
