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Brian Steeves
Joined: 19 May 2009
Posts: 8
Location: Wahpeton, ND
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 Posted: Sat Aug 29, 2009 2:38 pm Post subject: Rudder Trim Pushrod Help |
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I am modifying my rudder for rudder trim with a trim tab fit into the rudder. Now that everything is in and mounted, I am having some clearance problems with the push rod hitting the outer skin and flare.
As it sits now, the servo can travel a little over half an inch but the actual travel is 7/8 for the T2-7A Servo.
When the push rod is pushed it ends up hitting the outer rudder skin, when it is pulled it hits the flare.
I am attaching a couple of pictures to help better understand my rambling and horrible description.
So my question is, can anybody give me some ideas on how get full travel of the servo without the push rod hitting the skin or flare (hopefully with out boring the hole out to much).
For more detailed pictures you can see them on my builders log at http://www.briansrv10.com/Rudder_Trim.php
Appreciate any help you can give.
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woxofswa
Joined: 12 Aug 2008
Posts: 349
Location: AZ
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| Posted: Sat Aug 29, 2009 8:11 pm Post subject: Re: Rudder Trim Pushrod Help |
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From an old modeler, if you move the clevis down closer to the airfoil you will have more clearance and need less throw for the same deflection.
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Myron Nelson
Mesa, AZ
Flew May 10 2014 |
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Ron B.
Joined: 17 Feb 2009
Posts: 103
Location: Nova Scotia
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| Posted: Sun Aug 30, 2009 4:11 am Post subject: Re: Rudder Trim Pushrod Help |
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I think if you move the servo closer to the trim arm it may help.
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jkreidler
Joined: 13 Feb 2008
Posts: 151
Location: Sheboygan Falls WI
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| Posted: Sun Aug 30, 2009 8:31 am Post subject: Re: Rudder Trim Pushrod Help |
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You might consider going to your local hobby shop. There are many different rod ends available for RC airplanes. Your call if you want to use those parts in this application, but it might lend some ideas.
Thansk, Jason Kreidler
N44Thanks Flying #40617
4 Partner Build - Sheboygan Falls, WI
Tony Kolar, Kyle Hokel, Wayne Elsner, Jason Kreidler
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Brian Steeves
Joined: 19 May 2009
Posts: 8
Location: Wahpeton, ND
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| Posted: Thu Sep 03, 2009 5:31 am Post subject: Re: Rudder Trim Pushrod Help |
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Thanks for the input. I will try those to see if I can get more throw.
I am assuming that the trim tab will only need to move from flush to the left side to trim out during flight. This might help also since pulling the tab is what makes it hit on the flare.
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