Wow, lots of good info. I'll boil down what you all have said and let me know if I'm wrong.

1. A loose fit on the flaired area around the hinge pin is not a problem.

2. Set the hinge point into the control surface, not the TE of the wing, or either of the stabs.

3. by all means use them.


My first attempt was on the ailerons of a GP Super Aeromaster bipe I built last year, I gave up in frustration and went to the Dubro pined hinges. Bad choice. I ended up with one aileron high by about 3/32 on one wing tip. I have yet tried to fly the plane because of this and Looking back, I should have addressed my frustration then. Anyway, I'm just finishing up a new wing and replacement of all the hinges and control horns on the Ruperts Dad I built a couple years back, my first build in close to 40 years. Hinge points were not around back then, Over/under cloths strips were the norm then. Couldn't get them right either

Iv'e got a few of those taper dremil grinding bits. I'll give them a try. So far, I really like the hing points better than the flat dubro pined hinges. It is a lot easier to hit the center line with a drill rather than the slot machine. I'm also discovering how easy it is to build drill jigs, not only for the hinges, but for the locating dowels in the LE of the wing. A couple scraps of wood and balsa any you have your jig.

Don't wan't to make this to easy, or I'll have to build an addition on the garage to hold all the planes. Actually, it getting hard walking around it now.

Don