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Old Jun 09, 2012, 12:17 PM
ZippoGeek
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United States, NY, Buffalo
Joined Dec 2002
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Help!
Kyosho F-16: what am I doing wrong?

I've had three flights on my Kyosho F-16 (55mm). I'm running a Thunder Power 1350, which is the battery indicated by Kyosho.

My problem: this jet nose-dives like a lawn dart! The only way I can get it to fly level is to maintain constant up elevator through the entire flight. Very stressful...

Before the maiden flight, I balanced the plane on a CG Machine with AUW. When I got to the field, however, it exhibited this nose-down behavior. After moving the battery back as far as possible towards the CG, she's still nosediving. Moving it back barely made a difference; it defies logic.

My next step is to add a ton of up-trim, which is completely bass ackwards.

Advice anyone? Thanks in advance...

Jason
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Old Jun 09, 2012, 04:59 PM
ZippoGeek
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bump - thx!
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Old Jun 09, 2012, 06:02 PM
Do it Right, the first time!
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United States, MN, Hermantown
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You could read this: http://www.rcgroups.com/forums/showthread.php?t=866346

Might have missed something. BTW, pretty old isn't it?
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Old Jun 09, 2012, 06:12 PM
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Anything misaligned?....stab, wing incidence? You say you checked your CG but if all of your surfaces are neutral or trimmed positive, your CG may be to far forward. Defiantely look/search into the older thread on this model.
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Old Jun 09, 2012, 06:49 PM
ZippoGeek
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United States, NY, Buffalo
Joined Dec 2002
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Quote:
Originally Posted by toughitaliankid View Post
Anything misaligned?....stab, wing incidence? You say you checked your CG but if all of your surfaces are neutral or trimmed positive, your CG may be to far forward. Defiantely look/search into the older thread on this model.
Just went out for two flights. A combination of up elevator and squeezing the battery back even further made it work. But it's definitely too draggy on the tail now.

I'm going to find that thread. Thanks.
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