Rudder Return Springs

Discussion for builders, pilots, owners, and those interested in building or owning a Sonex.

Re: Rudder Return Springs

Postby fastj22 » Wed Dec 04, 2013 11:13 pm

For the life of me, I don't see the value of the springs. In flight, they really don't provide any value. Flutter dampening? On the ground, they also don't give much if any centering force.
And they were a pain the butt to install.
But I wouldn't not install them without consulting Sonex.

John Gillis
SEL Private, Comm Glider, Tow pilot (Pawnee Driver)
Waiex N116YX, Jabiru 3300, Tail dragger,
First flight, 3/16/2013. 403 hours and climbing.
Home: CO15. KOSH x 5
Flying a B-Model Conversion (Super Bee Baby!)
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Re: Rudder Return Springs

Postby Area 51% » Fri May 03, 2019 2:14 pm

For those of you that actually use the springs, did you heat the ends and remove the temper to bend them into shape?
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Re: Rudder Return Springs

Postby Bryan Cotton » Fri May 03, 2019 3:32 pm

I used mine for another purpose. I just bent the loop over, no heat.
Bryan Cotton
Poplar Grove, IL C77
Waiex 191 N191YX
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dual sticks with sport trainer controls
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Re: Rudder Return Springs

Postby Area 51% » Fri May 03, 2019 3:39 pm

The loop doesn't present the same challenge as the other end. Straightening a couple of inches of tempered wire is the problem child.
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Re: Rudder Return Springs

Postby radfordc » Fri May 03, 2019 10:06 pm

fastj22 wrote:For the life of me, I don't see the value of the springs. In flight, they really don't provide any value. Flutter dampening? On the ground, they also don't give much if any centering force.
And they were a pain the butt to install.
But I wouldn't not install them without consulting Sonex.


When one of mine broke I removed them....didn't consult anyone. They serve no purpose that I can see.
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Re: Rudder Return Springs

Postby Rynoth » Wed May 08, 2019 6:52 am

I don't remember making them very much shorter. My take was that the only reason for the springs is to take up slack in the cables to keep them from binding up or knocking around in the aft fuselage. As long as there was enough spring tension to keep a little bit of tug on the cable when the pedal is pressed to the stop and then released, I was happy.
Ryan Roth
N197RR - Waiex #197 (Turbo Aerovee Taildragger)
Knoxville, TN (Hangar at KRKW)
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