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Help, need some advice

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Old 02-06-2010 | 12:07 PM
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From: Sandnes, NORWAY
Default Help, need some advice

This atum I baught a Reichard Proxima II. My problem is that when I hand lauch it, it immediatlygoes into a stall. And stalls in low altitude isent good for any plane.............need some repair.........

After the first time I added some more dowtrust to the motor, but the same happende the second time. Im sure the elevator is correct. Can it be the cg that is wrong???? I have put it where the manual says it to be, 65 mm from LE.

Any advice??????
Old 02-06-2010 | 02:58 PM
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Default RE: Help, need some advice

Just verify the difference in angles between the wing and the horizontal tail, if the manufacturer gives that data.

I believe that there is too much difference in those angles; hence, if your stab-elevator is correct, as you say, then the angle of attack of the wing is too high.

The easiest solution is just to trim the elevator down and perform an unpowered glide test.

Check these articles:

http://fatlion.com/sailplanes/decalage.html

http://www.charlesriverrc.org/articl...GMarkDrela.htm

Good luck!
Old 02-06-2010 | 06:28 PM
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From: Sandnes, NORWAY
Default RE: Help, need some advice

thx, I will try that. Its a T stabilisator with 2 screws on the top, so its easy to change the angel. Just have to put something under the forward one and try it out.. Just have to glue a bit first..........

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