Preventing full throttle (hot) starts:
Remember “Clockwise is Closed”. Both start with CL. Move your throttle stick and verify operation. Reverse if necessary.
Rudder/Gyro direction. Is it normal or reversed?
This will keep your heli from whipping around on spool up. Stand behind the heli and rotate the tail blades so they are at 12 o’clock and 6 o’clock. Now fold the 12 o’clock blade forward in the grip(pointing at canopy now) but keep the other blade and grip pointed at 6 o’clock. Still standing behind the heli, move your rudder stick and the folded blade should move the same direction. If not, reverse the RUDD channel. Now you need to check the gyro direction. Grab the boom back by the tail case so that if the folded blade were to move you would feel it against your hand. We know that a left input will cause the folded blade to angle towards the boom and we know that the purpose of a gyro is to keep the heli from pirouetting from torque. It does this by sensing what direction the heli is wanting to spin(Yaw) and it sends the opposite signal to the tail servo. So if it senses the nose yawing right, it will send a LEFT signal to the servo. Have you been holding the boom this entire time? Good. Let’s test it. Give the nose of the heli a quick yaw to the right(since you have the heli by the boom you will be moving the boom to the LEFT). You should have felt the folded tail blade press against your knuckles. If not, then you need to reverse the gyro and this is done on the gyro control box, NOT in the radio. You say you have NO movement when you yaw the heli? Check to make sure you have the gyro sensitivity turned up in the radio. Factory default on most gyro screens is 50/50 so that would not make the gyro move much. Crank that baby up to 80 and you will see the gyro move. The final setting will be determined by flying the heli and seeing how high you can set this number before you get tail wagging. Most gyro manufactures have recommended settings.
I can’t turn my gyro gain up very high before my tail wags and the heli appears to have no vibrations
Pop your tail pushrod link off the tail servo and move the pushrod by hand. It MUST be silky smooth. No exceptions. If it is not, figure out which part is causing drag. The guides on the boom, any of the links on the tail pitch levers could be tight, the pitch arm could be tight on its pivot point or the blade grips mat not be swiveling freely on the tail hub.
I have a CCPM heli and can’t get the correct swash plate movement
Think monkey. APE. (Aileron, Pitch, Elevator). These are the three links on the swash. If you have a function (it is no longer a channel because of the way CCPM works the servos together) that is not working correctly then you will need to go to the swash mix menu and change the value for that function. Default values are usually 60/60/60. If the aileron was backwards but your elevator and pitch are correct just make the positive 60 into -60 and that reverses the function.
How tight should my blades be?
Hold you heli with the skids to your belly and the blades parallel to the ground. Give the heli a good shake towards the ground. Your blades should move in the grips but not completely droop/flop down.
My helicopter vibrates
What kind of vibration? High frequency shaking fins and foamy fuel = tail or fan clutch system (bent tail output shaft/hub, torque tube problem, fan run out, etc.). Lower frequency = head system (balance blades, tracking, paddle distances, worn out damper rubbers, bent main shaft, etc.)
Good luck and happy flying.
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