This is exactly the video that I was looking for! Thanks very much!

Good idea with the countersink bit.

That'll work too. I had good luck not tearing the covering when I made an "X" with the knife. It also helped with getting the correct angle when first drilling.

I used a small phillips head screw driver over the exacto knife to make my marks for the drill. The drill bit fell right into place nicely.

Don, The one thing I learned - quite by accident - was that, on a plane like this that has ply running through the center of the control surfaces, it's better to remove the lower covering, which gives you a close-up look at the way the pin in laying against/through the ply sheet. Covering it afterward is easy, especially on a white or solid color plane, and in this case the GP plane had the usual festival of wrinkles on it, so recovering it was just as easy as removing the wrinkles.

It's awesome. I have two. You'll never find a nicer, more complete, or better running engine anywhere. There's a Syssa 30CC engine thread on RCU.

Thanks, I'm doing these hinges in a Giant Super Sportster as of right now.

The small one is a 1/16" - that's what I usually keep in my small hand-drills for pilot holes and for servo screw holes. The final sized hole is big enough that the barbs fit but don't rattle in the hole, and at the top I move it around in a circle to accommodate the hinge section when it's pressed down to center. Have fun with your revolver - I'm sure it'll fly like it's on a rail! J

Yes, they come in at least two sizes. For giant scale, they have large hinges. For your average-size models (.46 to 1.20), there's a standard size. And they're perfect for every type of control surface.

@rcskypilot I have a Zenoah G38 pilling it. Whole lot of power. Little heavy for plane, had to put 12 oz in tail, but I'm happy. The plane was ready and flying, when last time I found 2 paper hinges cracked right wing and 2 more left wing, so I'm replacing hinges for robarts. Thanks for the help. Gracias.

I just take an old board, and drill some test holes until the pin hinge just slips inside without dragging. I think it's in the 3/16" to 1/4" range. Interestingly enough, I'm building another GP Super Stearman now (the same plane as in this video), and I went with the smaller standard size pin hinges on this one, and I found they're better for the thinner surfaces. I used more of them on each surface; at least one extra per surface. They also come in even smaller sizes.

Oh, sorry. I countersink it with a standard 60-degree rose bit. You have to accommodate the wider hinge section. The newer ARFs with pin hinges use a larger drill bit and only drill a very shallow shoulder hole. It does the same thing.

May I ask: for the large size Robart pin hinges, what size counter sink bit are you using in the drill? Thanks. PS: Great instructional video!!!

It's a RIGID brand drill. You can get them in Home Depot. GREAT drills.

Can you use these hinges for the elevator and rudder as well? and do they come in different sizes? Thanks!

These were the giant sizes. Anything above a 60-90 size, I use them.

De nada. :) ~ J ~

Some arf's lack much balsa in the trailing edge or control surface leading edges so only a small amount of hinge and epoxy is gripping a small amount of balsa.

@martinwhite418

11 ай бұрын

There is very little force trying to pull the hinge outward.

Hey Jim, great video... perhaps the best Robart Installation video online! I was wondering if there are any new tricks or tips that you may have learned or experienced since making these videos a few years back? Thank you in advance for your reply. Don S.

JIm, one more question if you don;t mind (although I may have more!). You mention that the drill size is a "smaller size one" for the pilot hole, and I expect that you followed that with a slightly larger drill bit size. What size drill bit did you use for both the pilot hole and the final sized hole? I am using the 1/8" sized Robart hinges too. BTW, this is all for my newest bird, a GP Revolver 70" w/a Saito FA-100. Thank you for all of your help and these great videos! Don

Beautiful drill mate...what make is it?

toothpicks work great with resins in small holes.

@rcskypilot

7 жыл бұрын

Absolutely. Another favorite trick I have is to grab a handful of the Starbucks coffee stir sticks every time I'm in a Starbucks; break them in half and they're perfect for stirring up the small batches of epoxy, and applying them into small spaces.

Hi Jim, could you tell me the make and model of your drill please?

what size hinge points are you using?

What kind of material are you using for the wings

@jamessurra16

5 жыл бұрын

It's the factory plastic coating. Great Planes.

How do you like that Syssa ? It's made in the USA, right ? I'd buy it just cause that... but If I have good references it's better.

Use 24 hour epoxy, move as slow as you want, can even break for dinner.