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Old 08-27-2015, 09:32 PM   #1
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Flying wires help

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Looking for some help with flying wires on a 35 cc gas engine, scratch built Ryan's Rebel. The tail surfaces are braced by four wires, I initially used Sullivan rigging brackets, 4-40 steel rod with one soldered clevis and one threaded clevis, After breaking two of the rigging brackets I beefed those up with heavier material but now I have broken one of the soldered clevises (next weakest link I guess). One of the guys at the field suggested using a nylon clevis at one end, the idea being that the nylon would provide a touch of flexibility but I'm a bit skeptical that they will hold up.

My purpose in this thread is to get a feel what others have used with success.

Thanks in advance, I'm sure others have had this problem and solved it eons ago, Other than this issue I love this airframe as a first venture into the gas world - just another dead reliable honest stick type aircraft.
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Old 08-27-2015, 11:07 PM   #2
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Re: Flying wires help

Terry, I've been doing flying wires the same way you did, for many years. I too have had failures like you describe. The way I fixed the problem was to balance the prop carefully, and if possible, soft mount the engine. A lot of airplanes, model and full size, shake their tails like a dog at idle. Also, vibration travels along the length of the fuselage and seems to increase intensity at the end, probably due to lighter construction in the typical tail section.
I hope this helps, Jon
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Old 08-28-2015, 09:13 AM   #3
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Re: Flying wires help

Try the Dubro 1/4 scale strut attachments. Use blue Loctite on the little screws.

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Old 08-28-2015, 09:22 AM   #4
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Re: Flying wires help

I have, in the past, used weed eater line crimped into electrical eye fittings with a touch of ca. The line also comes in different thicknesses and colours.

Vibrations are absorbed by the more broken fittings.

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Old 08-28-2015, 03:47 PM   #5
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Re: Flying wires help

Thanks for the replies. I checked the prop and the hub was a bit out of balance. Don't know how I missed that earlier but better late than never. I also replaced the lower two wires with weed eater cord since I had all the materials needed on hand (no trip to the hobby shop). We'll see how it goes the next time out.

Keep the ideas coming if there are more ways to skin this critter.

Thanks again!!!!
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