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Old 06-12-2010, 11:00 AM   #1
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Ok you buy a Heli and they must think everyone is into or going to do 3D with it. Reading this sight and this thread I have come to the conclusion that there are a few people like me that will be happy taking off with their \\\Heli and being able to fly across the field and even bring it back. I know how boring. But its a fact. So what would some pitch and throttle curve s be. You know at 70% heli lifts off, oops pulled back to much and heli is bouncing of the ground(this is what I wish to avoid)So guys if you have some good numbers you think I can use let me know. These will be used on a Heli with a KDS Flymenter. If there is a difference of not using the Flymenter ,please list these also as I have one with and one without the stabilization system. Thanks in advance
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Old 06-12-2010, 01:36 PM   #2
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Re: Curves!!

Your throttle curves will depend on whether you're flying electric or nitro. It'll also depend on which motor you're running, how much pitch you're pulling, if it's electric, then what pinion, and main gear size you have along with a whole host of other things. Getting a starting point for throttle curves shouldn't be a problem, but they're very likely to need a bit of tweaking once you take to the air.

Your pitch curves depend on your mechanical setup.

If you're set for 0 degrees at mid stick (the way 3d guys do it), and -10/10 at low and high, then a pitch curve like this would do the trick:


That would give you a half stick hover (round about) and give you lots of resolution so plenty of room on the collective without it being too touchy around the hover point.

If you don't have a setup for 0 degrees at mid stick, then let us know what your mechanical setup is like on a linear throttle curve. That'll make it easier to give you a reasonable answer.
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Old 06-13-2010, 07:13 PM   #3
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Re: Curves!!

I am just beginning in helis and I find this site to be pretty informative.

Watch the video called "Pitch and Throttle Curves 101 (58 MB)". I will give you an idea of how to set up curves.

Hope this helps.

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Old 06-14-2010, 08:14 AM   #4
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Re: Curves!!

There are no hard and fast pitch and power % numbers that you can just dial in and get the right performance. Each heli has to be individually tuned.

I adjust throttle curves according to the performance of the motor and the blades, depending on the setup

For conventional heli flying, it should hover at mid stick.

I adjust Pitch and RPM accordingly so that it hovers at mid stick at the correct RPM

High stick is governed by maximum engine performance and pitch combination. In other words, putting the heli in high stick should result in the motor maxing out and RPM holding steady. (pitch is adjusted accordingly so that the engine does not over/under rev)

For low stick on idle up- a good fast descent is deialed in by adjusting the pitch accordingly.

For 3d, hover should be at 3/4 stick and inverted hover should be at -3/4. Max and min stick's are both set to max power and pitch adjusted accordingly (motor maxing out and RPM holding steady; pitch is adjusted accordingly so that the engine does not over/under rev)

Of course, a set up for a beginner student is a different ball of wax, I adjust high and low so that there is not enough pitch to get the student in trouble (but it should still hover at 1/2 stick)
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