This post was authored by James Redfern:
“I use a sharpened wire to make first hole to servo location. I
simulate where control horn will be and do the best I can to end up at
servo horn. Long wire helps with this. Once I like where wire is,
(usually I have to take 2 stabs to get it close enough for step 3. I
pull the wire most of the out, but making sure it will follow hole to
correct location. Then with wire pulled out, I heat wire a couple
inches up. Once hot slide wire in and move in a circle to enlarge hole
only where it exits wing. Then remove wire completely, heat first
couple inches of wire. Carefully open lower part of hole w circular
motion. That quick, perfect tubes.”
Some updates to the http://redigital.org/wind mobile wind graphs:
This is an article describing how to make silicone hinges along with several links to other resources on the same subject.
Man, that sucks! Heres what I would do. First hold the hinge back in place at neutral and wick some thin CA into the torn area. If you need to tape off the surrounding areas to avoid getting glue everywhere then do so. The CA will actually attatch many of the tiny fibers that remain. Then take the edge of a diamond cutoff wheel or an abrasive wheel and use it to chase out any extra glue from the hingeline. I do this by hand without a dremel. Your hinge should seem normal at this point. You can unhook the linkage so you can drop the flap down 90 degrees. The hinge should still be working ok. Next, spread a thin layer of 3M5200 1mm thick 10MM wide across the hingeline on the inside of the wing. Then close the flap to neutral and tape the ends. On the outside retape the surrounding area of the hingeline and spread some 3M5200 into the hingeline. This should be wiped very thin so it’s basically lower than the wing surface. Then untape the surrounding area. Once dried this should hold up if all went well. You could always put a layer of tape over the hingeline after it’s dry for extra insurance.
The other way to fix it would be to apply tape to the outside of the wing as step one. Then smooth the inside of the hingeline with the 3M5200 making sure that you force the material through the hinge into the tape by looking from the outside periodically as your moving across the damaged area. Once you have a good 1mm thick bead across the damaged area and the taped side has a smooth line of 5200 stuck to it then you can tape the flap at neutral and let it sit for a couple days. Leave the tape on for flight.
The reason I mantioned two different ways is that sometimes when the hinges tear there is a lot of kevlar left and just using CA sometimes brings them back to really good shape. If that is the case with yours then you might be able to just back the hingeline up from the inside with the 5200 and not have any tape or 5200 on the outside for the best looking repair. Hard to reccomend the best option withoud putting my hands on it though. Hope this made sense.
I used Futaba S3114 servos for the ailerons.
Just picked up a Hammer 2.4 from alofthobbies.com
The build will start shortly…