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Old 11-18-2006, 10:08 AM   #1
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heli help pleez !

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hey guys.
i have a question that is really discouraging me. i baught the Walkera 22E at the hobbyshow (a Hornet clone i heard). I am a COMPLETE BEGINNER to the air. the chopper is still virgin to the 5ft height, lol.
my Q is: my chopper is not tuned properly, when it gets a bit of lift (on the ground still mostly) it starts to drift left/forward, and turn clockwise. i messed around with the trims alot, both ways, and im not getting anywhere. and once it gets off the ground it drifts the same way and then i try to correct, but its so touchy and rips the other way, and i correct and correct untill it crashes or i get scared and back off the throttle hoping to land strait. so what would i adjust on it to increase its stability and straitness ?

...also, where should i set the PLT and PIT knobs ?

...3rd, is the balance point for a heli suppose to be on the main rotor shaft ?

thanks alot ! , and im hope'n im not looking too much like a dumb- on this one. but i did mention i am a beginner to the air.
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Old 11-18-2006, 12:09 PM   #2
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Just to answer the cg question. Yes it should be at the main rotor shaft, if you pick up the heli by the blades it should be parallel to the ground. As for adjusting the gyro I don't know, I'm still trying to set mine up..the trex is a big step up from the cx
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Old 11-18-2006, 01:50 PM   #3
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If you want a really good flight sight go to www.rccanada.ca
Post your problem there.
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Old 11-18-2006, 04:51 PM   #4
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Not 100% sure about your heli but my Cp Blade and Lepton will drift somewhat to the left also. Mine is however very minor. I'm told that this is "some what" normal due to the main blades and there rotation. As for the tail wagging, it's all about the gyro or in the CP blade's case the 4 in 1 gain control (i.e. built in gyro). When setting up the gyro - MAKE FINE ADJUSTMENTS ONLY! This was the key to both my heli's gyro set-ups. Try http://www.runryder.com/ for info, they have a huge forum with various heli's sub groups. Good Luck SO
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Old 11-18-2006, 04:51 PM   #5
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In terms of trim, make sure the swashplate is perpendicular to the ground. Use the trims to trim that first without operating the throttle. Try to eye it as best as possible. This should give you a ballpark trimming. The fine tuning you will do in the air.

The helicopter does drift to left upon takeoff because of the tail rotor pushing. Once your heli starts sliding to the left, you'll need to increase the throttle a little faster till it's in the air and compensate with the aileron at the same time. It's a gutsy move for a beginner, but it's something all heli pilots have to go through.

Next is your rudder. Use your rudder trim and compensate. Sometimes, you'll need to move the servo that controls to rudder to get mid point if your gyro doesn't have AVCS.

Then use the trims and fine tune it. Since you're a beginner to helicopters, I would suggest you read up on helis. Helicopters are NOT an easy thing to learn. It takes hours of practice in order to hover properly. Helicopters are naturally unstable so you'll need to continually move all your sticks simulaneously. It took me a month to produce a steady hover. And now, it's been 11 months and I can do some light aerobatics.

Some words of encouragement told to me by Arden from A&J's: "Don't give up" I was persistent, and kept flying no matter how discouraging my beginner flights were and now I'm having a blast flying.
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Old 11-18-2006, 05:46 PM   #6
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thanks for the advice everybody, il keep working at it to see what i can get. and thanks for the words wedginator, il learn this thing if it takes me 5 helicopters .
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Old 11-18-2006, 06:29 PM   #7
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Best advice.... don't use trims. you need to get the setup with mechanical adjustments. I check my balance by holding the flybars and moving stuff to get it balanced.

After that you set up pitch curves. I make a jig to hold the flybar parallel with the tail. Usually the blade holder or something like foam. also use a bubble level.

then check the pitch settings with a pitch guage both left and right sides of the heli. set all the settings on one side first then set the other and adjust the linkages so both sides are the same at low mid and high stick. this will get the tracking very close to start off. I personally start with stunt mode and go for -10 to +10 (or whatever you are going for but make it even top and bottom) and I start with zero at center stick. even if you aren't going to use stunt yet, it is more parallel to work with. then I set up normal mode.... you need to get it about -4, +4, +10, then make adjustments to pitch and throttle curves to get the headspeed where you need it.

the only settings you should be making with the radio is pitch and throttle curves. you will also have a channel to use for adjusting the gyro gain, if the gyro is equipped with one. a good gyro makes all the difference in easy and hard flight. I love futaba and at stock settings in the manual I have always been able to lift and take off

Before changing the gyro, make sure the tail blade pitch is set. usually you want the lever to be 90 degree angles to the tailboom. this is common but check the manual for the actual point they say. the preset angle is usually almost perfect pitch to hold the tail.

check the gyro is operating in the proper direction. with the unit on, move the tail around and make sure the pitch changes to push back opposite the way you are moving. this will show if it's reversed or not. remember to unplug the motor so you don't accidentally bump the throttle (ask me how I know about this LOL)

it is normal to pitch left when taking off. you just need light touch on the controls to counter on lift. you need to get the heli 3 feet up, or so, to get out of the ground effect. the blades cause a lot of turbulance near the ground which makes the heli harder to fly until up and out of it.
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