View Full Version : Having trouble with Heli-max MX400

02-24-2008, 01:43 AM
Hi guys,
So when i take off the tail just spins in one direction.
I'm not sure if it could be the gyro or whatever.
How can i check if the gyro is screwing up?
Or whatever else needs to be fixed?

02-24-2008, 02:14 AM
Which direction does the tail spin? Hows the headspeed? You need a good deal of rpm's to get good tail authority on a belt drive. You may need to reverse the gyro.

02-24-2008, 02:31 AM
ok well the heli spins counter clockwise
What is headspeed?

02-24-2008, 02:47 AM
Headspeed is how fast the actual main rotor spins. This translates to tail rotor speed as well. If your tail rotor is not spinning fast enough, it cannot push enough air to control the tail.

You should look through finless bob's set up videos over at helifreak. They cover trex and hdx models but have the same pricipals as with most r/c helicopters.

02-24-2008, 03:24 AM
ok thanks for all the info.
I really appreiciate it.