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Well, it would seem there is a connection (at least
on two occasions - mine and yours) between being "throttled way back" and
a more rapid rate of descent than expected. My experience with the old
prop/gearbox (never had a hard landing like that) was that pulling
the power back to 2000 rpm simply slowly bled off airspeed (assuming you didn't
lower the nose) but with this prop/gearbox is seems it is a sudden and large
magnitude change.
I am going to experiment some more (at
altitude), but there is a definite connection (at least in the 80-90 mph range
on my bird) between what appears to be a sudden change from a non-factor
to an "air brake" factor. {:>). Until I decide otherwise, I will keep
my rpm above 2800 on final.
Glad to see you back in the air, John. I am
interested, when you get to that point, about your performance with the modified
turbo.
Ed
----- Original Message -----
Sent: Saturday, February 26, 2005 9:04
PM
Subject: [FlyRotary] Re: Monster Prop Air
Brake
So don't know whether this theory holds
water, but the effect is there and I found today that keep the engine at 3200
rpm resulted in a considerably difference. Any ideas from you prop
guys??
I'm no prop guy, but ...
That makes sense to me,
Ed, and it might also have been a factor in my prop strike incident. This was
the first time I'd been able to get a smooth idle, and I was throttled way
back. My prop is a pretty big bad boy too. It might have been giving me some
drag I wasn't expecting. I flew it again today (prop fixed with flox) and kept
the speed up this time. No problems. No vibration.
John
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