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Extra 300 Wing Snap
Hi all I have a Goldberg Extra 300 which will not snap it's wing even at low low speeds, on the other hand I have a Ohio 84 inch Extra 300 which will snap violently at the same speed.
Both Extra's have the same airfoil ? Any advice on how to correct this. Thanks Rcpete |
Wing loading
My Ohio 84" Extra had a pretty hight wing loading with a gas engine. I thought the plane built way heavier than they said it should. Mine also snapped really well(or bad) depending on how you look at it :D . Landings were a thrill for sure. The snapping finally got the best of it on a dead stick landing. I think Ohio designed the plane with a very scale size(small) stab and elevator, the stab just did'nt seem to have enough control over the wings angle of attack.
Kevin |
Extra 300 Wing Snap
Pete,
Careful for what you ask. "Snapping" can "take" your model very quickly. "If" you want to go in that direction: start (slowly) increasing control deflection, and (slowly) begin to move the C.G. to the rear. You will need: aileron, rudder, and elevator at the same time to snap. "purists" leave out the ailerons... Too soon you will have a "snappppa-haaappy" model, that may well get you into trouble on slow landing approaches, or, especially "dead-stick" landings.... Regards, Masked Pilot (Robert)........... |
Snap
Masked Pilot, please read the whole thread, I asked how to correct a unwanted snap, example the wing stalls,the plane falls to the ground, not what you want.
Thanks Rcpete |
SNAPPY
Well , i read the thread like MASKED PILOT , and it sounded like you wanted a more lively airplane and i can relate with that, I myself like a snappy bird :D
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I have to admit...
I thought you were trying to get the Goldberg to snap, too.
Read your post back to yourself, and think of it from the point of view of aerobatics nuts :D It's all just a matter of perspective. To some of us, the non-snapping plane is the one that needs correction. |
Extra 300 Wing Snap
To reduce snapping try:
Spoileron mixing. Ailerons go up slightly when the elevator goes up (creates a little washout) Reduce elevator travel. Check wing for warps or flaws in the leading edge. Try slightly nose heavy CG If possible reduce weight |
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