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  1. #1

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    Flex Point Hinges & 1/2A Planes


    Are these hinges intended to be used on 1/2A planes? The ones I am referring to are Klett Plastics, Polypropylene Flex Point Hinges, RK-4, Small as shown in the attached sketch. Are they superior to CA hinges of similar size? By the looks of the instructions, installing them is essentially the same as CA hinges. The only difference that I see concerning installation is the use of epoxy as the adhesive instead of CA glue.

    Iā€™m trying to decide whether to use CA hinges or Flex Point hinges. I have both types on hand. Which hinges are the best?
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  2. #2
    combatpigg's Avatar
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    RE: Flex Point Hinges & 1/2A Planes

    I don't see how they can be as good as the fuzzy sheet plastic hinges.
    I suppose the Klett hinges work OK, but it's been so long since I used them I can't remember why I don't use them......besides just an instinctive aversion to things that look like they could fail.
    WHO GUNNA FEED MAW KEEEIDS..???

  3. #3

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    RE: Flex Point Hinges & 1/2A Planes

    I've used them, but I wasn't overly enamoured with them, as you not only have to drill a hole for the fin, you still have to carve a slot too, and sometimes they're noton the same axis, which can be a real headache.

    IMO CA hinges are better as it's a simple knife slot andthe hinges are thin so you won't distort thin tail surfaces. Also they're easy to pin if you're really worried about them jumping off your plane.
    Go knife edge your cub!

  4. #4

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    RE: Flex Point Hinges & 1/2A Planes

    http://www.iroquois.free-online.co.uk/knot.htm

    Take a look here. Scroll down to close sewn hinges. This is what I use, made of dental floss. One surface needs to be notched in the thickness of the floss so the surfaces will be close together at the hinge line. These hinges are very flexible, and I have never had one fail, even on 40 size CL airplanes.

  5. #5
    Duane-RCU's Avatar
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    RE: Flex Point Hinges & 1/2A Planes

    I remember trying to use those in my early years! I may have better luck now, but back then I made a mess everytime I used them. CA hinges for me.


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