fowcat38

Hi everyone,

I fly airplanes, drive cars and boats (beginner to intermediate) on those. I bought a Falcon 40 from a friend in hope of "well rounding" my RC experience. I have followed the directions to a tee. I start the helicopter up and the thing wants to spin clockwise, therefore I input rudder to the left and the tail rotor will not spin therefore I can't stop the rotation. It work perfect when the stick is corrected to the right. The tail rotor spins and everything.

So the problem is that I get no tailrotor movement when the stick is pushed to the left. I do get movement when it's pushed to the right. So if I were to try and lift the thing off the ground it would just spin.

What little I know is that the gyro might be bad. I guessing at this point.

Any help or suggestions would greatly be appreciated.

Fowcat

USHobbySupply

Remember, the rudder controls the nose of the heli. Left rudder causes the nose to go left. Right rudder and the nose goes right.

Now, here is the trick. Since the blades are clockwise, without a tail motor (or any thrust from the tail), the heli will go nose left. Just the same as if you pushed left rudder. So, when you want to the nose to go left, all the tail has to do is slow down or stop the motor and the torque from the main blades will cause the nose to go left.
In order to go right, the tail motor has to overcome the torque, thereby requiring more thrust from the tail and hence, the tail motor (and blade) speeds up!

Sound like normal operation in that regard,
Michael

jk3700

I have a falcon 40 and have experienced this problem. I fixed mine by checking the rotor blade shaft. It has small plastic tubing, I believe, to keep the rotor blade engaged. Actually, I had to use one of the small rubber thingies that holds the canopy on to replace the lost plastic tubing. Every so often, things move on the tail rotor shaft and I have to reposition things to re-engage the tail rotor.

This might not be your problem, but then again it might.

Good luck!

yadac123

check your tail gear and make sure your entire tail assembly's gear are meshing against eaach other.

Andy

cflytrap

For one thing, when your heli is still on the ground while you are spooling up and getting ready for takeoff, it is normal for the helicopter to change position on its axis (like yaw left or right on its own). It is also normal for the tail motor to kick on kinda later than the main rotor. It is also normal for the tail rotor to stop or slow down dramatically when you apply left rudder. And when you apply right rudder the tail motor should spin fast.

I think you will find that once you get your helicopter off the ground about a foot or two, it will clear its own downward thrust and turbulence and the tail should hold. When its on the ground you get vibrations thru the landing struts which may affect the gyro, and the gyro tells the tail what to do. Also when the heli is on the ground, the ground is counteracting the torque of the main blades somewhat and thats why the tail motor doesnt kick on. No forces to counter at that point.

If your helicopter changes position on the ground while you are spooling it up, then hold it at a throttle just before where it would lift off, physically walk around the helicopter until YOU are behind the tail, and then throttle up higher to lift off.

hope this helps.

fowcat38

To all, I appreciate everything. I'm going for it tonight. I will let everyone know how it turns out. Hope it is not bad one. Thanks again.

Felix

nascarfaad

Can anyone send me pics/link so I can do a fuse mod to my Falcon 40? I've heard it keeps the 4n1 from frying.

Navy_1

hear is most of your mods

) super skids mod http://www.super-skids.com/superskids/superskids.htm
2) fuse mod to protect the 4-1 http://www.rcuniverse.com/forum/fb.asp?m=6855651
3) Lipo 11.1V upgrade http://www3.towerhobbies.com/cgi-bin...?&I=LXTFG6&P=7
4) 100 amp mosfet mod www.fairchildsemi.com part# HRF3205 http://www.rcuniverse.com/forum/fb.asp?m=5589679
5) Way better motor http://www.helihobby.com/html/e-sky_...l#PARTORI61107
6) Tail rotor mod (direct drive) http://www.rcuniverse.com/forum/fb.asp?m=6986819
7) Rotor core mod http://www.rcuniverse.com/forum/fb.asp?m=5839606
7a) Alternative motor core mod http://www.rcuniverse.com/forum/fb.asp?m=7009769
8) Weight reduction http://www.rcuniverse.com/forum/fb.asp?m=6965249
9) Metal parts http://www.rcuniverse.com/forum/fb.asp?m=7005431
10) 7mm boom mod http://www.helihobby.com/html/viper_...l#PARTGRP-2799
11) servo mod http://www.rcuniverse.com/forum/fb.asp?m=7003986
12) Night stuff http://www.helihobby.com/html/extras.html#PART67415
13) lipo info http://www.rcbatteryclinic.com/lithium-ion.html

have fun

pa902

ultimate falcon 40

http://www.stonehenge-capital.com/FALCON40_MODS.html