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HomeScale✈️AircraftScale HeliScale Helicopter Main Discussion › Trex 650X and 700 Funkey
01-10-2021 01:39 PM  3 months ago
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Gfaltm

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Houston Texas USA

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Trex 650X and 700 Funkey
Hello
I just put together this build and need some much needed advice, I fly in normal mode not idle up, slow with a lot of hovering, I want to this with low head speed (6cell setup), can anyone tell me a good throttle curve and pitch curve to start out with.
Thanks in Advance
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01-17-2021 12:57 AM  88 days ago
Rojoalfa

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Punta de Mata, Monagas-Venezuela

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Well, you must follow the instruction manual for pitch angles, min - 5, center +5.5, max +10.

For your throttle curve, you need a tachometer to set proper rotor rpm.

For initial hovering, you can try...
min 0, 30,center 40, 40,max 40 in a five point throttle curve.
With this 40% you can fly near 1700 rpm... That should be enough.

Fly your heli and check rpm.
If you feel your heli need more power, increase 40, step 5 by 5 till you feel confortable with this.
On the contrary, decrease 40, step by 5.

/
Saludos cordiales,
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01-17-2021 03:16 AM  88 days ago
Gfaltm

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Houston Texas USA

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Ok Thanks I am actually gonna start with a higher curve because I am going with 6s instaed of 12s, I am going with low head speed.
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01-17-2021 01:00 PM  87 days ago
Rojoalfa

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Punta de Mata, Monagas-Venezuela

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Let me warn you about it.

When you lower the number of cells by two, you also lower the max rpm by two.

It is not easy as you may think. Doing such arrangement, your heli may not fly at all.

Would you give us more info...
ESC, motor, spur and pinion theets.

You would need to do some calculation before doing this.

/
Saludos cordiales,
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01-17-2021 07:00 PM  87 days ago
lt1pwr

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Douglasville, GA

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It can likely be done, however like mentioned you’ll need to be careful since you will not have the power to get yourself out of trouble when you get in to a power settling situation. I had an electric converted Raptor 50 in a Hughes 500 fuselage running a 4000 mah 6S battery pack.. I ran a flat throttle curve and a standard linear pitch curve. Here’s a video of it flying.

Watch at YouTube

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01-18-2021 11:53 PM  86 days ago
206 pilot

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Longisland, have a drink fly a kite. Ben franklin

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Rethink what you plan on doing,, there’s a 99.9% chance your going to burry it. Plan ahead.. Rich
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HomeScale✈️AircraftScale HeliScale Helicopter Main Discussion › Trex 650X and 700 Funkey
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