RCU Forums - View Single Post - Make that Trainer smoother at landing speeds
Old 06-26-2012 | 03:23 PM
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CGRetired
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From: Galloway, NJ
Default RE: Make that Trainer smoother at landing speeds

ORIGINAL: Hossfly

Just a thought about something I do most of the time with any non-scale model that has strip ailerons all the way to the tips. Maybe it will be helpfull to some of you folks and not just beginners.

1. Especially with wings that are less than symetrical, I cut the aileron at about 3 to 4 Inches from the tip. I glue that portion back to the wing with about 3-5 degrees UP. To add a hinge to the end of the remaining aileron is rather easy.

2.Cut a normal slot in the aileron. Same for the wing if the aileron is not yet fixed in place. Place a hinge in that end area.

3.If the aileron is already hinged, do the slot in the aileron by bending it down or up and make a slot with a knife. Then cut a small piece of the trailing edge away to accept the other end of the hinge. Then glue it back in place. It's out of sight and it will hold the aileron in place.

You will be very surprised what this bit of effectively, ''washout'' does for your slow flight, especially landing speeds. I learned this way back when I found that with Scale Warbirds, Take-offs and Landings became much easier if the entire aileron was raised about 3-8 degrees above the main wing. When it's right, that old booger, Tip-Stall, pretty much disappears.

The above assumes that you have laterally balanced your model.

EDITED:
Didn't mean for two pictures. The cut and redo is not shown here, just the ailerons to full wing length. This was for club racing but since that is over, I cut the aileron 3.5 inches bacl. Landings are smooth and easy. No sudden yaw & r0ll on take-off as before.
This DOES sound interesting. How does it affect the normal flight and aerobatics capability? In other words, would it do to modify, say a sport plane with shorter ailerons, by adjusting that length of wing at the tip that is not aileron to have a bit of up-angle? Say a Tiger 60 (or similar) as a second plane to give it a bit more ease at landing but remain capable as an aerobatic trainer sport plane?

CGr