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Old 01-27-2007, 11:02 PM
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Default Hinges

What type of hinges do you prefer to use on your control surfaces?

On 40 to 60 size planes.
Old 01-27-2007, 11:41 PM
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Default RE: Hinges

Robart Hinge Points,
Best hinge on the market IMO.
Old 01-28-2007, 12:11 AM
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Default RE: Hinges

robart/dubro pinned hinges
Old 01-28-2007, 12:27 AM
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Default RE: Hinges

Klett Hinges from Klett Plastics. To bad they went out of business within the last year [sm=disappointed.gif]
Old 01-28-2007, 08:17 AM
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Default RE: Hinges

40 - 60 size planes? I use nothing but CA Hinges.

The only exception would be a 3-D plane, then I would use Robart Hinge Points
Old 01-28-2007, 08:58 AM
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Default RE: Hinges

Nothing but CA hinges. I haven't had a failure in over 20 years of use on many planes. I have seen two failures, both on ailerons. One was due to improper installation, and one due to extreme flutter that destroyed the wing panel.

Here's how you do it:
CA Hinge Installation

There are several rules to follow for an easy, correct CA hinge installation. These rules are good for hinges from different manufacturers, including Great Planes and Radio South. I’ve used them on many planes from pylon racers to Unlimited class Fun Fly planes to even a giant scale Stinger (the 1/4 scale size hinges). I have never seen an in-flight failure using this procedure.

I have seen only two in-flight hinge failures. One failure was from catastrophic flutter, which also destroyed the wing panel. The other was due to doubled hinges and the use of thick CA.

Here we go:

Use a #11 blade to cut the slots.
Cut only once per side/per hinge.
Use only thin CA.
Do not double the hinges.
Do not use “kicker”.
Install after covering.

1. Slot the wood pieces, install the hinges, and mount the control surface. Gently push the pieces together.
2. Flex the control surface both ways for the maximum amount of travel you expect to use. This will automatically create the proper hinge line gap.
3. Slowly drop 2-3 drops of CA on each hinge at the hinge line on one side only. If any CA puddles in the hinge line, blot it with a paper towel.
4. When that is dry, apply 2-3 drops of CA to the other side of each hinge.
5. When both sides are dry, flex the control surface both ways to ensure proper movement.

That’s it! The wood will pull out before the hinge will let go. The surface will tend to stay centered and will not flop around. Both will help prevent flutter.

Old 01-28-2007, 10:18 PM
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Default RE: Hinges

C/A hinges. Usually Radio South on the pattern planes. Sig or Greatplanes on the 60 size and smaller. Robart Hinge points on the rudder of Pattern planes. Otherwise C/A all the way
Old 01-28-2007, 10:49 PM
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Default RE: Hinges

CA hinges up to 9 lbs of model +/-. DuBro HD pinned hinges thereafter.

Robarts are probably the best, but as the Russian aircraft industry saying goes: Perfection is the enemy of good enough".
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