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Old 01-06-2008 | 07:24 PM
  #8  
Truckracer
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From: Des Moines, IA
Default RE: drilling robarts


ORIGINAL: tankertoad

Anybody ever made this mistake? One of my rudder hinges had some space around it at the opening due to my removing a little too much wood to give the knuckle room to move so, without much thought, I dabbed a little gap filling CA in there. BIG MISTAKE!!! CA and ROBARTS DON'T MIX!!!! It basically melted the hinge. Now I have the whole rudder off and have to drill out the old hinges and pray the new ones go in OK.

Any tips or advice would be GREATLY appreciated.
As you know, CA isn't a correct glue for Robart hinges but if CA melted the hinge, it wasn't a Robart hinge. It was probably one of the knock off, Robart look alikes made with a different type of plastic. I've had durability problems with cheap, look alike Robart hinges and if in doubt, change them out when assembling the plane. The look alikes can usually be detected by dipping them in acetone or lacquer thinner ... real Robarts are not affected by these solvents, the chinese knockoffs will usually soften and even go to pieces if left in the solvent for any length of time. Airplanes and engines are too expensive to loose them to a few $$ worth of counterfeit hinges.