Pull Pull Servo Connections  
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All Forums >> RC Airplanes >> Questions and Answers >> Pull Pull Servo Connections
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Pull Pull Servo Connections - 12/3/2004 3:50:09 PM   
ZapRC



Posts: 51
Joined: 9/20/2004
From: Pearland, TX, USA
Status: offline 		I have not used this type of connection on a Pull Pull system. I want to know if this is a reliable way to connect the cables to the servos.

All the control surfaces move great and the cables are perfectly centered and functional. The cables are fastened to the servo with that push rod holder on the servo arm and it is very strong. I am sure that the cables will not pull through the set screw but I want to make sure that they don't break due to friction. It is being used in an 80" 1.60 Spitfire (world Models)

I really like this way to mount the cables because it is very easy to make adjustments.

Any input please.

< Message edited by MinnFlyer -- 12/3/2004 4:09:10 PM >

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RE: Pull Pull Servo Connections - 12/3/2004 4:00:33 PM   
MinnFlyer



Posts: 19989
Joined: 4/22/2002
From: Willmar, MN, USA
Status: offline 		Are you saying that you're using EZ Connectors for your Pull-Pull wires? If so, I don't see a problem as long as the set screw stays tight. Loc-tite would be a good idea.

Edit. Oh! I see, it took so long for the pics to load that I didn't know they were there. I stick with my original answer (And I'm going to try to fix your pic.)

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< Message edited by MinnFlyer -- 12/3/2004 4:09:46 PM >

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RE: Pull Pull Servo Connections - 12/3/2004 4:21:05 PM   
ZapRC



Posts: 51
Joined: 9/20/2004
From: Pearland, TX, USA
Status: offline 		Thanks for fixing the pic and thanks for the response.

I sure like this way of connecting the wires and loctite is a must. It makes it real easy to get them perfectly parallel and tight.

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RE: Pull Pull Servo Connections - 12/5/2004 5:25:32 AM   
Sense963



Posts: 107
Joined: 5/17/2002
From: Murfreesboro, TN, USA
Status: offline 		My 2 cents.... I don't trust EZ connectors. I make my pull pull out of nylon coated leader wire from the fishing store, use 1/16" ID copper tubing, and those 2-56 studs with the holes in the end. That is my control surface solution. I simply make a loop at the servo end and go thru the servo arm. (Adjustments made at control horn end) You make the loop with the wire and pass it back thru the tube after going thru the servo. Then you take the wire and fold over the top of the tube and pass thru the tube again, then crimp a couple times. It will NEVER let go. For a really detailed explanation, see an old control line flyer. They know how to make secure wire connections!


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RE: Pull Pull Servo Connections - 12/6/2004 2:50:20 AM   
Gray Beard


 

Posts: 2267
Joined: 4/21/2003
From: Hemderson, NV, USA
Status: offline 		I use the fishing leader, wire, plastic wrapped the same way as sense with either 4-40 or 2-56 ends. I also twist the wire and heat with A match just enough to melt the plastic coating so it bonds. I then connect clevises and lock screws and hook up to the control horn. Those EZs tend to get too loose with use and develop slop in the controls. I have also had the peg end break off.

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RE: Pull Pull Servo Connections - 12/6/2004 1:06:52 PM   
Edwin


 

Posts: 3440
Joined: 2/8/2002
From: Leander, TX, USA
Status: offline 		I wouldnt use a quick link for a pull-pull system. I use them on planes up to 60 size and throttle on larger. I prefer the ball links with screws thru them. Then setup the rest of the system the same as sense963.
Edwin

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RE: Pull Pull Servo Connections - 12/6/2004 11:33:43 PM   
Stick Jammer



Posts: 2251
Joined: 11/21/2002
From: Crete, IL, USA
Status: offline 		You should be fine with that set up in your Spitfire. It has small control surfaces and minimal deflection, not a 3D machine by any means. FWIW, those 5945's are way overkill for that application unless you already had them and don't have a better use. Good luck with the Spit. I have the .60 size, great flying bird.

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