Today's Message Index:
----------------------
1. 04:48 AM - Re: Elevator Trim Tab Setting (Thom Riddle)
Message 1
| INDEX | Back to Main INDEX |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Elevator Trim Tab Setting |
--> Allegro-List message posted by: Thom Riddle <jtriddle@adelphia.net>
Hugh,
Perhaps we are misunderstanding each other. By 9 o'clock, I mean that
the trim control handle, when looking at it from the center of the
cockpit, is in the 9 o'clock position, i.e., handle extending aft. I'm
not certain if that is the result of the factory instructions or a
previous owner's adjustments. The result, in our case, is that this is
full nose up trim and yields about 70 mph with power set for straight
and level flight. The only disadvantage I see in this is that you can't
trim it to slower flight for final approach, but as I said before, the
control forces are so light that you don't notice the need for slight
back pressure to slow it down to flare and touch down speed. The
advantage is that you can't trim it to stall speed with a load factor
of 1. In an emergency situation, if the trim is set in this position,
then relaxing the elevator will give you a safe AOA which is very
close to Vy.
On the other end of the speed range, 75% cruise power in our 80 hp
Allegro, the trim control handle is set to about 5-5:30 o'clock. There
is plenty of trim control range and it easy to set precisely the
trimmed AOA for any speed above 70 mph. If you want the full nose up
trim to be slower, that is your choice, of course.
Thom in Buffalo
Other Matronics Email List Services
These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.
-- Please support this service by making your Contribution today! --
|