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Composite-ARF Extra 330L (2 x 2m)
techsupport@composite-arf.com
Extra rudder is VERY sensitive, and the plane
high rate: 175mm (max.)
starts shaking at high speed if the rudder link-
low rate: 120mm
age is not really rock solid. So check your link-
ages and closed-loop cables again and make
sure that there is NO slop at all ! On the other
hand these characteristics are also the rea-
son for best rudder sensitivity at the slowest
3D-speeds.
low rate: 120mm
Ailerons
high rate: 175mm (max.)
Aileron throw for high rate is 70mm up and
RUDDER THROWS
down. Use at least 30% exponential
for high rate. For low rate you should
decrease the throw to the top to
high rate: 70mm up
45mm, and the bottom to 50mm. Yes,
low rate: 45mm up
this is a reversed differential due to
the hinge line being in the top skin
instead of on the centre line. You will
have to finalise this differential figure
during flight, as mentioned earlier in
this instruction book. At high rate, for
low rate: 50mm down
high rate: 70mm down
3D maneouvres, this doesn't effect
the rolling too much, so you can max-
AILERON THROWS
imize the throws to whatever is
mechanically possible, even more up
than down if you wish.
In General
Your Extra has very large control surfaces, which makes it very sensitive and reactive. It is
always possible that these huge control surfaces can flutter at high speeds if the assembly, servo
installation and linkages are not made perfectly. So please do yourself a favour, and make sure
that you only use the best servos available, and take the utmost care making your linkages.
Check every linkage for slop, and rather reduce the maximum throw than risking a high speed
flutter due to sloppy servo gear or linkages.
We hope that you enjoyed building your Extra 330L. Also let us know, if you think that any hard-
ware is missing or inadequate. We have tried to make this airplane as complete as possible, and
with good feedback from customers you will help us to continue making good things even bet-
ter. We appreciate your comments very much.
Email: feedback@composite-arf.com
Thank you!
Your Composite-ARF Team
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