Roll trim rigging

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Roll trim rigging

Postby Bryan Cotton » Mon Dec 19, 2022 5:43 pm

After 3 full turns of down left flap, this is where I am:
Left seat:


Right seat:


I'll see what it does with 2 people soon....
Bryan Cotton
Poplar Grove, IL C77
Waiex 191 N191YX
Taildragger, Aerovee, acro ailerons
dual sticks with sport trainer controls
Prebuilt spars and machined angle kit
Year 2 flying and approaching 200 hours December 23
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Bryan Cotton
 
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Location: C77

Re: Roll trim rigging

Postby pfhoeycfi » Mon Dec 19, 2022 6:31 pm

Looks good. How aggressive was the original left tendency? Mine is fairly significant...
Peter Hoey
SEL Pvt, Comm Glider, CFIG, Pawnee & L19 Towpilot
Philadelphia Glider Council
Sonex B SNB0021, N561PH, Taildragger, Aerovee Turbo, MGL MX1, First flight Dec 18, 2022
Also built Sonerai IIL N86PH
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Re: Roll trim rigging

Postby Bryan Cotton » Mon Dec 19, 2022 7:21 pm

I didn't take any video, but it was uncomfortable to hold for a long time. I'd either use both hands, or trade off hands. In the pattern or maneuvering it seemed fine, but extended straight and level wasn't great.

I think I overdid it. Turns faster right hands off than left. I played both videos at once.
Bryan Cotton
Poplar Grove, IL C77
Waiex 191 N191YX
Taildragger, Aerovee, acro ailerons
dual sticks with sport trainer controls
Prebuilt spars and machined angle kit
Year 2 flying and approaching 200 hours December 23
User avatar
Bryan Cotton
 
Posts: 5381
Joined: Mon Jul 01, 2013 9:54 pm
Location: C77

Re: Roll trim rigging

Postby Skippydiesel » Sun Jan 08, 2023 6:49 pm

I started with a right role tendency - adjusted left flap up to correct.

Flaps at Left 0.9 degrees Right 0.4 degrees (relative to trailing edge of each wing skin, using digital level)

Now have to use right rudder and left stick to get ball centred.

Yet to test but have adjusted right flap down 1/2 turn Right flap now 0.1 degrees.

Also - with no baggage have run out of aft (elevator up) trim ie at cruise (130 + knots) pilot must hold continual back pressure to prevent nose drop. Have tried adjusting trim spring positions with limited benefit. Just about to go out and see if I can find a heavier (front, pilot adjustable) spring.
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