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05-24-2007 06:46 AM  13 years ago
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freck

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worcestershire, united kingdom

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tt 39 pro
Hi guys,
i have recently purchased a new raptor 30 with tt 39 pro engine, the problem i have is when coming out of a circuit and bleeding the speed of to land, at half throttle and under the engine starts to speed up, also when i go into the hover and then land again at about a 1/4 throttle the engine speeds up instead of coming down, pitch and throttle curves are correct, could this be a lean idle mixture setting or somthink else .
Freck.
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05-24-2007 08:28 AM  13 years ago
himaxkeith

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Atlantic City NJ. USA

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sounds like you could be rich on the top and lean on the idle but keep in mind when you say coming out of a circut bleeding off head speed your also decreasing your pitch faster than the eng spools down might have something to do with it also
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05-25-2007 06:12 AM  13 years ago
freck

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worcestershire, united kingdom

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hi himaxkeith,
thanks for your replie,have looked at what you said and
restet both needles, and the heli now loses hieght without speeding up.
Freck.
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05-25-2007 06:44 AM  13 years ago
concho

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montreal canada

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i think your problem is at point 2 throttel curve
dont touch the curve but instead try to richned the iddle mixture
wat hepening wen you when you transelate from hover to normal decent

your iddle mixture is too lean resulting a higer rpm
your natural reflex is to reduce throttel to slow down rpm

slow down rpm=under rpm head speed=fast decent
with a richer mixture the point 2 th curve(dont touch the throttel curve in the tx) will (keep a constant rpm
the head love a constant rpm
buy the way my advise come from rays authoritative helicopter manuel
wich i consulte like a bible
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05-25-2007 09:25 AM  13 years ago
freck

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worcestershire, united kingdom

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thanks concho,
good advice will try it and see if can get it better.
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