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Author Topic: CLIMBS RIGHT THEN STRAIGHT  (Read 413 times)
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riversidedan
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« on: July 31, 2020, 06:05:37 PM »

we gotta couple rubber models that are fine turning right on the climb then wants to go straight on the glide
both nose block and rudder have some right in them , also some down thrust on the nose block.

we know the model powers up to the right which is normal, but am wondering what makes it go straight on the glide and is thier a fix for that?? Huh
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gossie
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« Reply #1 on: July 31, 2020, 06:12:01 PM »

Tail tilt will fix it.
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riversidedan
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« Reply #2 on: July 31, 2020, 11:23:08 PM »

already is about 3 *
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vintagemike
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« Reply #3 on: August 01, 2020, 04:34:44 AM »

what are the models?
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lincoln
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« Reply #4 on: August 01, 2020, 07:25:04 AM »

Maybe use less right thrust and more right rudder? I usually get my models trimmed for low power using tail and/or wing adjustments and then use only thrust adjustments to cope with high power.
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BG
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« Reply #5 on: August 01, 2020, 09:02:52 AM »

Sounds to me like you have a warp in the wing. Your right trust and rudder overpowers it in the climb but when the glide kicks in the wing fights the right rudder and she goes straight. Solution is to take the warp out of the wing if you can. If this fails then maybe go to more stab tilt and maybe a bit more right rudder (be careful though because she may start to spiral to the right).

BG
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riversidedan
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« Reply #6 on: August 01, 2020, 03:42:15 PM »

   no wing warps that I can see so will add in more tilt and right thrust, but good suggestion.....
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lincoln
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« Reply #7 on: August 02, 2020, 12:59:11 AM »

More right thrust will just increase the disparity between the climb and glide.

What kind of model? If it's an EZB, disregard,my comments.
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Viperkite
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« Reply #8 on: August 02, 2020, 05:40:58 AM »

I had this problem with my Keil Kraft Eaglet. The torque was creating the turn so when the motor stopped it went straight (into a tree). I just fitted a rudder trim tab to give a turn in the glide.
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OZPAF
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« Reply #9 on: August 02, 2020, 09:02:23 PM »

Just a off the cuff suggestion - but is the wing skewed left wing tip forward? This will give the effects BG mentions as the effective washin will lead to a right turn under power and then the drag from the washin will pull it straight on the glide.

John
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Robmoff
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« Reply #10 on: August 03, 2020, 03:51:54 AM »

Have you tried trimming for a LEFT glide? Try reducing the right rudder.
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gossie
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« Reply #11 on: August 03, 2020, 06:03:58 PM »

I notice there is no mention of what we are talking about?HuhHuhHuh
Give us a clue please......Models, and span.
It just might help a lot.
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