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jesse(at)saintaviation.co
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 Posted: Sun Jul 19, 2009 6:11 am Post subject: Aileron Rigging - how is it done? HELP |
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If your flaps do not have a twist in them, then you get your angle by
holding the aileron even with the flap when the flap is fully up
(bottom skin even with fuse bottom skin and nose skin up against rear
spar). Then with the neutral bracket in place on the aileron
bellcrank, adjust the small aileron pushrod to fine-tune the
position. When finished, move the aileron through its full range of
motion and make sure there is no rubbing of pushrods on the wing
structure.
Next, do this on the other wing, then connect them together with the
fuselage control linkages and verify that they hit both stops (with
the elevator in neutral/trail) without any obstructions, and that the
sticks are straight up when both ailerons are in neutral. It is easy
to see neutral on the ailerons with the flaps up.
If you hit the stops, then you should have full travel, as long as the
ailerons line up with the flaps with the elevator in trail.
The angle measurements shouldn't matter if you have straight flaps and
they are all the way up.
Jesse Saint
Saint Aviation, Inc.
jesse(at)saintaviation.com
Cell: 352-427-0285
Fax: 815-377-3694
On Jul 19, 2009, at 2:05 AM, AirMike wrote:
| Quote: |
Ok - Ok - this has probably been discussed before, but please
anybody explain the procedure.$%&*?&%#(at)^&%#
I have the flaps installed and the inboard edges are flush with the
bottom of the fuselage. I have the large (in-the-wing) aileron push-
rod adjusted at 2.28" from the fuel tank skin (to the center of the
bolt). The W-730 measuring do-hickey is in place on the outer crank
and is tight against the spar in the wing.
Question - If I adjust the length of the small aileron push-rod that
goes to the aileron itself - will I automatically get the specified
up/down limits. And if I do not how do I finesse the push rods to
get those limits?????
Lastly a really stupid question. How are those angles measured with
an electronic level. Is Zero degrees what would appear to be a
straight line across the top of airfoil? Or is it an imaginary line
down the middle of the airfoil? If it is the latter - how do you
extrapolate that line?
This end game stuff can make a sane person crazzzzzzzzzzy.
--------
OSH '09 or Bust (busted) be there someday
Q/B Kit - end game
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p 53692#253692
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carl.froehlich(at)verizon
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| Posted: Sun Jul 19, 2009 10:48 am Post subject: Aileron Rigging - how is it done? HELP |
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I suspect you will get a lot of responses on this. Here is mine:
1. The call outs on the push rods are to get you in the ball park. They
are not the final lengths.
2. The hardest part in this is to get the aileron's rigged so that they are
exactly in the trail position at the same time. Get this done first, and
then do as many cross checks as possible to make sure they are exactly the
same (straight edge coming off the bottom of the wing then measuring the
height to the trailing edge, etc.).
3. While using the flaps as the indicator for aileron alignment is a good
check, you first need to confirm the flaps themselves are correctly aligned
and even.
Control surface rigging is not a trivial task. During your test flight
program you will probably find the need to adjust the rigging several times
until you get it right. While the typical indication of a rigging problem
is a heavy wing, there are other more subtle indications such as changing
roll trim with speed.
Carl Froehlich
RV-8A (500 hrs)
RV-10 (still sanding the doors to fit)
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