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Live hinge repairs

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Old 07-04-2012, 01:13 PM
  #1
rc4flying
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Default Live hinge repairs

Hello guys,

How or should I say, what is the best way to repair a "Live" hinge? I have the hinge delamenating from the skin and I am new to this type of hinging. Just trying to get some ideas before I attempt the repair. This is on my Flap hinge.
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Old 07-04-2012, 01:48 PM
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tuan lam
 
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Default RE: Live hinge repairs

I been using CA hinge, it work good for me
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Old 07-04-2012, 03:58 PM
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HI Joe
I mix up finishing resin run it in where it has torn away and tape the flying surface down hard and leave it to set, it has never let go after doing this repair.
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Old 07-04-2012, 05:22 PM
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Default RE: Live hinge repairs

Mav,

Thanks for the suggestion. This is exactly what I did after looking at some of my options. I have one side drying now. Good to know it will work.

Thanks for the info.

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Old 06-16-2014, 08:49 PM
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Bump old thread. Same issue, got a small 1mm tear forming at the end of a flap, and its never flown. So want to catch it. I am not sure what the method is with the finishing resin, care to explain. I also PM
tuan lam to understand how he used a CA hinge to fix it.

I am not a fan of the live hinges and they make me nervous, but they look good!

They do seem strong though.
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Old 06-16-2014, 09:47 PM
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Hi essyou35.
Just got an email about the thread I have done a couple of repair's this way now and they are still going strong after must be close to 300 something flights. I use the finishing resin because it is thin and runs right down and soaks into the tear then pull the flying surface back hard and tape it till it is dry then just crack it and away you go. the beauty of the finishing resin is that it doesn't bulk up like ordinary say 30 m or 15 m epoxy's.

Cheers
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Old 06-16-2014, 09:55 PM
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Reading your post again I think you mean just a 1mm tear along the hinge if this is the case I wouldn't even worry about it. The repair I explained above is for when it pulls away from the top or bottom wing skin.
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Old 06-17-2014, 05:30 AM
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I have used a silicon bead on the tear with great success. My flap on the original Skymaster L39 tore and I found the repair on a glider site. I did not trust it so I made up and experimental piece using an old wing. I let is set for a week and tried to destroy it, no way :-) about 1/4 inch either side of the tear and 1/4" high in the centre of the bead

Last edited by Jet Doctor; 06-17-2014 at 05:31 AM. Reason: More info
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Old 06-17-2014, 06:02 AM
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Rtv clear silicone? Just put it over the top of the tear?
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Old 06-17-2014, 11:24 AM
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Yes, just clear RTV silicon over the tear. Just a light sand and clean of the area. Stick some tape on the top side to prevent the silicone coming through the top. Let it stand for about a week to ensure the silicone has time to cure properly
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Old 06-17-2014, 01:30 PM
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Great idea Zane...amazing how we gather knowledge and experience in this hobby....it never stops.
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Old 06-17-2014, 03:20 PM
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Once repaired a great way to protect the hinge is a strip of hockey tape across the top, I did this on my 42% comp arf extra and my flash, it helps support the hinge and can easily be replaced when it gets old. It's clear so not even noticeable.
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Old 06-18-2014, 01:26 AM
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I been using CA hinge, it work good for me
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