Curing a Roll Problem in your Mooney Mite
Here’s a useful article explaining what to do if your aircraft tends
to go into a roll when you take your hands off the controls.
It was sent to the Mite Site by Boyd Maddox, who runs a one
man shop in Houston, TX. At
the bottom you will find some addition helpful comments submitted by Patrick
Moran, N9AW.
Rolling to one side or the other is a normal problem with most
every airplane that I see. If you want to cure a roll problem, start with
the wings.
- Be sure that the AILERONS are rigged and that the proper up
and down travel is achieved.
- With the stick held in the center, set the
ailerons at 0 deg. I would use a straight edge off the bottom of the
wing. Most important is getting them the same.
- Now see how the flaps line up. If you made any changes in the ailerons DON'T touch
the flaps. GO FLY IT AND SEE WHAT IT DOES. Write it down. So often
the pilot says my left wing is falling off when what he really means
is he has to hold the left wing down.
- If it still falls off to the left, make sure the FLAPS are
set the same. If they are, lower the left flap one turn. GO FLY IT
AND SEE WHAT HAPPENS, and so forth
- Now that you have it flying level, see what THE BALL is doing.
- Check and make sure the Turn & Bank is level. Put a level across
the canopy sill and level the airplane (wings).
- If it's not level, loosen the screws that hold it in and turn it until
it is level. Tighten the screws.
- Now GO FLY IT and see what the Ball does. ARE YOU SKIDDING?
- If it’s still skidding, proceed with the adjustment of the RUDDER.
- Block the rudder peddles so they are parallel.
- Adjust 1/2 turn at a time. Loosen one turn buckle and tighten the
other and you got it. GO FLY IT.
- Actually what I have done is give you another excuse to fly your Mite!
- GOOD LUCK! LET ME KNOW IF IT WORKS AND I'LL TRY IT ON MINE. (Just
kidding, but do let me know how it goes and what you find.)
BOYD
Boyd Maddox is at Houston
Southwest Airport (AXH), Houston, Texas.
281-431-1756 or cell 832-656-8332
"I'm a one man shop that specializes in
Mooneys and Mites but I work on all brands. I'm slow, but
they come out good. I have three Mites in the
hanger right now; 2 are mine that
I am restoring. I do wood, fabric, and of course
annuals. I'm always willing to talk other mechanics through annuals on
the phone."
February, 2002
Patrick Moran: "I would add a
few other items that come to mind as I recall this problem with 9AW long
ago"
-
Is one wing heavy? Repairs may have added extra weight to one wing.
-
Is the aileron gap seal leaking air on one side? I can testify this
will make a tremendous difference.
-
Is the horizontal stabilizer level?
-
One main wheel hanging down more than another can even make a difference,
though mine showed up as a yaw movement.
March, 2002