Posts: 345
Joined: 10/29/2002 From: Mountain View, CA, USA Status: offline
Rslocum, could I get you to take a really close up picture of one of the top hinged robart hinges, I'm have a world of trouble getting it right on my test block.
Posts: 255
Joined: 1/24/2002 From: Mt. Vernon, IN, USA Status: offline
Finally back at it! Busy does not really cover the last few weeks. My car died, bought a new one, work out the kazoo and assorted family stuff. Also Thunder on the Ohio happened last weekend. This was the air show I was hoping to be done by, but on the plus side I got the meet the Firebirds and the Bulldog’s Jim LeRoy. They were all great and let me take some nice detail shots of the real planes. The Extra’s were shorter and better looking than I ever expected. The Sukhoi was taller then I expected and the engine smaller. A Pitts may be my next major project.
Tonight I got most of the right aileron hinging done. I have attached a photo from the end of the wing with the aileron pulled out to show how I am doing it. I did not get to glue the hinges in tonight do to a fit issue with the end of the aileron rubbing against the wing when it is lowered. It will be easy to fix but I did not have time tonight.
Posts: 26
Joined: 1/26/2003 From: Milford, DE, USA Status: offline
i have the same plane and was looking forward to this part of your post as i have never seen this type of hinge done before.just wondering did you use a jig or just real careful with the drill.and help you can give would be greatly appreciated. thanks for this post...
Posts: 255
Joined: 1/24/2002 From: Mt. Vernon, IN, USA Status: offline
Tonight I got the right aileron glued on. Then I completely mounted the left aileron.
My method for these went something like this. I start by taping the aileron on with masking tape on the top. Then I fold the aileron up onto the wing so that it looks like large piece of triangle stock. With it in this position it is easy to measure where I want my hinges and mark both pieces at the same time. I used about 10 cm spaces between. This may be over kill but I have never seen a plane crash because it had too many.
After I have the marks I use a hinge to mark the bottom of the hole using the thickness of the hinge in the middle. I do this for each mark. Then I used a piece of ¼ inch stock I had laying around and connected the dots for the bottoms of the hinges. Then I hand drilled using the balsa stock as a guide. There is a photo of this stage on page 5 post 93. It would make more sense if you flip the photo upside down.
Then I oil each hinge at the pivot point. This helps keep glue out. Then I put the glue in each hole in the wing. After the glue is in I also put a light coat on one side of the hinge to make sure the glue keys on the barbs and insert the hinges into the wing. After that I put glue in the aileron holes and on the barbs sticking out of the wing and press them together. Then I make sure the aileron moves fully in both directions. This will twist the hinges into alignment. I put a bit of masking tape on the joint just to make sure it does not separate and wait until morning.
Posts: 255
Joined: 1/24/2002 From: Mt. Vernon, IN, USA Status: offline
Nope. Work over the last month or so has been a Witch! I have been making progress at a much slower than usual pace. At this point both wings are done. The fuselage is about 30% covered.
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All Forums >> RC Airplanes >> Kit Building >> Colombo-Anderson Models 27% 300L Build by RSlocum 
Colombo-Anderson Models 27% 300L Build by RSlocum - 
Sorry Rog, but I just couldn't resist.
Colombo-Anderson Models 27% 300L Build by RSlocum - 
