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1 12th May 05:09
stephen barnes
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Posts: 1
Default West Wings Orion-E


Hi,

I've just finished my new Orion-E, built after a 10 year break from flying.
I'm having problems getting it to fly well under power though. I've set the
CG to the recommended place, and it glides quite nicely. However despite a
lot of tweaking it is horrible under power, the nose goes almost vertical,
and using the elevator to stop this makes it really squirm left and right.
The motor is a speed 400 with Rondo controller and Gunther prop, and
batteries are 7*1.0Ah hecells from Overlander. So far I've put more
downthrust on the motor, which does nothing, and i've chocked the wing up at
the front, which has helped a bit.

Can anyone make any suggestions?
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2 12th May 05:09
paul mcintosh
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Posts: 1
Default West Wings Orion-E


Strange that propping up the front of the wing helps. I would expect just
the opposite. The reason the nose goes up is because of the extra lift
generated by the higher speed under power.

--
Paul McIntosh
Desert Sky Model Aviation
http://fly.mcintoshcentral.com
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3 12th May 05:09
the natural philosopher
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Posts: 1
Default West Wings Orion-E


I'd agree with paul. Put the wing back where it was and move the CG
back, and ad some down trim to compensate. Check for wing warps to.
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4 20th May 18:48
tom gaskin
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Posts: 1
Default West Wings Orion-E


Hi,
I've been flying my Orion E since the beginning of the year, and yes - if
you trim it as per the instructions it will thermal a treat but will pitch
up almost vertical when you apply power.

I added a bit more downthrust to the motor which helped, but I eventually
used a free mixer on my transmitter to mix in a smidgeon of down trim (about
2mm down at full throttle) as you apply power.

Now it climbs at about thirty dgrees on full throttle, and transitions into
a nice glide as you shut the throttle.

Mine uses a Graupner 400 SPEED GEAR 4:1 with an 11 x 8 J.Perkins folding
prop.

Once sorted a very enjoyable model...

Regards,
Tom Gaskin
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