Need some help with heli trimming!! - RCCanada - Canada Radio Controlled Hobby Forum
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Old 03-18-2006, 10:33 AM   #1
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Need some help with heli trimming!!

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i bought a blade cp heli off ebay..after screwing around for a couple weeks i can now fly it(barely). I have noticed that when i am flying and i get it perfectly level, it ALWAYS wants to start going right, so i am constantly fighting it back to the when u are standing directly behind it, its not even really flying straight, the blades are straight, but the heli looks like its hanging to the left.....its wierd....

I dont know if this is a lack of flight knowledge, but i finally got flying down, and its pissin me off because i spend the whole flight fighting it from drifting to the right.

let me know what u think, any ideas are appreciated.
Tamiya TNX
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Old 03-18-2006, 06:55 PM   #2
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I just bought a venom 3D, And have been practicing in the driveway for about a week. I am having the same problem
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Old 03-18-2006, 07:15 PM   #3
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you will find even with bigger helis that there are some tendencies.

when you take off, you need to pull the stick to the left. you actually want to get it light on the skids and almost balance on the left skid. this is basically caused by the tail blade blowing to counter the torque of the blades (the tail stops the heli from spinning around due to the main blades right?)
another thing to consider is how far up you get. you need to get out of the ground wash to get a smoother flight. take it up about 3-4 feet off the ground when learning, it will actually be easier than close to the ground. swirling air makes a lot of turbulance.

other than that, if it is just panning to the right with tail facing you, then a little left trim should help.

setup for a heli is crucial. getting all the linkages the same length and using radio settings as a last resort. level everything up and make sure the flybar paddles sit flat as well. check the heli balance... easy to put flybar side to side and grab that. you can see where it needs weight moved by fulcrum balance. front to back as well to check side to side wieght balance.
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Old 04-02-2006, 07:32 PM   #4
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Unfortunately these little helicopters are very squirmy and you need to give constant input to keep them hovering in the same place (especially the micros).

Like Pipeous said, the helicopter will naturally not hover level due to the trust of the tail rotor.

Best way to trim the helicopter is to find a large indoor area (or outside on a calm day) and take the helicopter 3-4 feet in the air. See which direction the helicopter wants to go when it is hovering level (front to back). Land the helicopter and give some trim input to correct that. Keep repeating until you get it trimmed out. Don't expect the helicopter to stay in the same place for more than a second or two without any input.

Is the CG correctly setup?
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