Roban A-10 Slotted Flap Hinges

[@tedsmith6137]

Nice work. Always good to see people experimenting rather than buying ARF's. I think you still need to look at how the air will flow into that slot. The lower t/e needs to be rounded off to allow air to flow up into the slot, and the top wing surface needs to be extended over the flap to stop air just popping straight up and creating turbulence ahead of the flap.

[@JohnSmith-xl9bo]

Hi...great looking Flaps. Can you tell me where you got the hinges? They look really nice. I'd love to have some for my next build!

[@parsecpres]

Hey Max. There was an awesome article published by NACA waaaay back in the day. It discussed slotted flaps and compared slotted flap performance to other types (plain, split, and Fowler). Google "NACA Technical Report 664" and it will take you right to it. Focus on installation "2-h" The report features installation drawings with slot gap dimensions, trailing edge extension dimensions, all in percent of chord (C), and other information to effect a perfect slotted flap installation. Throwing flaps "out there" does work, but I can tell you this report will help you. Good luck

[@maxav8er]

Thanks! I'll read that.

[@parsecpres]

Most guys, as did I, just threw flaps "out there." They worked somewhat, but building and rigging flaps according to TR664 makes them much better! Strive for perfection in your fabrication and installation. You will be greatly rewarded. Any ???'s, let me know.

[@733DMPILOT]

Yeah I wonder why this 1600 model comes with hinges you would use with a line control plane. Bad kit from Roban