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"Final" Torque Rod Questions.

Old 01-02-2008, 05:38 AM
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fr4nk1yn
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Default "Final" Torque Rod Questions.

I finally decided to do some torque rods after a couple threads and a lot of searching.

One of the things keeping me from trying it was an "easy" way of connecting the torque rods to the rods coming from the servo. Crimping, flattening and/or soldering is too hard (:
I think I came up with and easy, simple and cheap way to do it.

One final question though on placement.
The aileron has a 45 bevel. Should the torque rod be centered or on one side to keep from "binding" the tape hinges?

Photo attached.
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Old 05-29-2008, 05:20 AM
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Voyager2lcats
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fr4nk1yn, I am working on some torque rods (first time for me) and I have similar issues (placement, tubing, lubrication?). pd1 (Paul) recommended tubing that is slightly larger than the torque rod (.047 diameter wire in my case). I have plans for a PT-19 that shows the torque rods partly buried in a channel in the wing in front of the aileron(s). I haven't done it before so that's all I can offer. Maybe I can get Paul to give some advice. Hmm, your post is not too recent. Maybe not.

Bob
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Old 05-29-2008, 06:35 AM
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Biplane Murphy
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Center the torque rod in the beveled part of the aileron.....cut a channel/slot for it to be glued into.....the part of the rod that extends into the aileron should be very snug and it is good to fill the hole it slides into with epoxy or glue that will be gap filling...

Use a sleeve that is close fitting for the part of the rod that is in the center section of the wing....

The part of the torque rod that the pushrod connects to is usually threaded and has a fitting screwed onto it that a clevis or Z-bend can be attached to....

Here are some photos of a wing with Torque rods for aileron control....
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Old 05-29-2008, 02:02 PM
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fr4nk1yn
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Old thread.

I used some aluminum rod from the LHS, Looks like the same Murphy has in the photos.
There's some nylon tubing the LHS has that a perfect match for it.
It used the same end as in the photo but I wrapped with string and CA'd instead of the heatshrink.

If I remember right I didn't get the single bevel working 100%
It needed to slide in the wing which had some slop. With a "double" bevel it was much tighter. The plane I used it on surprising didn't mind the slop though
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Old 05-29-2008, 02:58 PM
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Biplane Murphy
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I almost forgot.....

Use vaseline in the tubes to prevent epoxy from getting in there, and to provide lubrication.....
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Old 05-29-2008, 03:38 PM
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Voyager2lcats
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Thanks Murph! The photos give me a pretty good idea about what I need to do. Do you recommend threaded torque rods? I guess a screw cap will prevent the clevises from pulling off of the ends.
So cut a channel into the aileron? Very good. Excellent tips.

Originally Posted by Biplane Murphy View Post
Center the torque rod in the beveled part of the aileron.....cut a channel/slot for it to be glued into.....the part of the rod that extends into the aileron should be very snug and it is good to fill the hole it slides into with epoxy or glue that will be gap filling...

Use a sleeve that is close fitting for the part of the rod that is in the center section of the wing....

The part of the torque rod that the pushrod connects to is usually threaded and has a fitting screwed onto it that a clevis or Z-bend can be attached to....

Here are some photos of a wing with Torque rods for aileron control....
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Old 05-29-2008, 04:00 PM
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Biplane Murphy
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Hi Bob....I like the threaded torque rods....since they are "adjustable" for surface deflection....

Here's another way of doing it....this is one of my glow fuel combat planes....it simply has a bolt through the aileron, and the plastic fitting w/clevises...
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