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Author Topic: Sig Easy Hinges  (Read 1635 times)

Offline rich gorrill

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Sig Easy Hinges
« on: July 24, 2013, 06:52:39 PM »
Has anyone tried the sig easy hinges? They claim they are the greatest thing since sliced bread. What results has anyone had using these on sport ships

Offline Allan Perret

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Re: Sig Easy Hinges
« Reply #1 on: July 24, 2013, 08:38:00 PM »
Too stiff for control line.
Allan Perret
AMA 302406
Slidell, Louisiana

Offline Brett Buck

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Re: Sig Easy Hinges
« Reply #2 on: July 24, 2013, 09:58:29 PM »
Has anyone tried the sig easy hinges? They claim they are the greatest thing since sliced bread. What results has anyone had using these on sport ships

  No no no!  WAY too stiff! Use cloth or sewn hinges on thin surfaces and pinned hinges on thick enough surfaces.

    Brett

p.s. I violated my own rule by giving advice without explaining why. The reason they are OK on RC planes but not on CL is that on an RC plane, you have a servo with a fair bit of torque in all conditions. As long as the torque is sufficient to move the control, it will move where you want it to. On a CL plane, all you have to move the controls is the line tension, and in light line-tension conditions this can be insufficient to move the controls against the combined effects of the hinge moment from the slipstream (deflecting the controls into the airstream takes some torque, considerable in some cases) and the stiffness of the hinges. If you have a fixed control handle position, the total deflection of the controls changes as the line tension changes, causing changes in the effects at the airplane.

    This is all very important stuff. Paul Walker, crowned the National Champion about a week ago for the 11th time,  was talking about control effort effects in his NATs thread entry.
« Last Edit: July 25, 2013, 10:01:33 AM by Brett Buck »

Online Will Hinton

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Re: Sig Easy Hinges
« Reply #3 on: July 25, 2013, 09:34:22 AM »
What they said goes double for me! Nix!
John 5:24   www.fcmodelers.com

Offline rich gorrill

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Re: Sig Easy Hinges
« Reply #4 on: July 25, 2013, 04:28:55 PM »
Thanks for the input, I was going to try them, but now I won't. I didn't realize they were too stiff for our use.

Offline Jim Morris

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Re: Sig Easy Hinges
« Reply #5 on: July 28, 2013, 07:51:05 PM »
Yea, if the controles are stiff it will cause the plane to hunt also.


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