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Old 10-19-2005 | 08:37 PM
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Aero65
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From: Honolulu, HI
Default RE: Gear Door Hinging Tips

Make sure there are no easily offended people around to hear you when the ca gets your finger stuck or the hinges stuck.

1. Know that they will get torn off at some time. Don't get frustrated just don't install them if you don't want to fiddle with them.

2. Try to make them strong as you can. As George said above use screws to secure hinges to door and fuselage.

3. Bring extra hinges to the field

4. When using pneumatic cylinders I like to mount them to bulkheads or trays rather than to the side of the fuselage on small mounts. If you put them on the thinner parts of fiberglass fuselages, many times you will get bending of the fuse when pressure is applied to the cylinders.

5. Have a variety of hinge types around to get the job done. Offset hinges are made by BVM, Robart, Skymaster, Tams, UEI Sorry if I forgot any. Also Nelson Hobbies sells some nice piano type hinges.

6. I like to use Gel Ca it sits on the hinges till you kick it and it sticks well. Handibond has it, and I think zap too.

7. Play around with the hinges that your going to use. Especially the offset hinges, the spacing of the hinge to the hinge line, thickness of the door are all very critical for a good working door. Also a Dremel tool with carbide cutters like BVM's or Robarts are a good idea, you will probably have to cut clearances in doors or the fuselage at times to get the doors to work.

8. Try your best to make the cylinders and their lines easy to get at and well organized, it makes it so much easier to find leaks and replace parts. Dreamworks has some very nice clips that you can use to organize your air tube. I believe he also carries many different colors of tubing to use for different systems. I like to use dawn dishwashing liquid water and a small brush to hunt down leaks.

9. If you are using a turbine install with just the bell mouth on the tailpipe opening you should protect any exposed wires and airline with a thin aluminum, stainless steel, fiberglass, or carbon heat shield. Wire loom can also work well. It takes just a little too much gas on start and poof you can have melted airlines.

10. Go to jet meets and look at other peoples setups, you will see some great stuff out there, I know that I always learn new stuff.