70 S Manual

Problem Possible Cause Solution

Helicopter vibrates or shakes

in ﬂ ight

Damaged rotor blades, spindle or blade grips

Check main rotor blades and blade grips for cracks or chips.

Replace damaged parts. Replace bent spindle

Random movements in ﬂ ight Vibration

Verify the receiver is properly attached to the helicopter. Inspect

and balance all rotating components. Verify the main shaft and tail

rotor are not damaged or bent. Inspect mechanics for broken or

damaged parts and replace as necessary

Tail oscillation/wag or poor

performance

Damaged tail rotor, tailboom, main gear

mesh, main shaft, loose bolts, vibration

Inspect the tail rotor for damage. Inspect the tail boom for cracks.

Verify main gear mesh and ensure no tight spots in the mesh

through full rotation. Replace any damaged or worn components

Drift in wind Normal

The model will drift with the wind but should remain level in  ight.

Simply hold the cyclic stick in the necessary position to keep the

model stationary. The model must lean into the wind to remain sta-

tionary. If the model remains level then it will drift with the wind

Model does not return to level

when the sticks are centered

Model was not initialized on a level surface Re-initialize the model on a level surface

Model was not taken off of a level surface

Always lift off from a level surface

Severe vibration

Main shaft is bent Check the main shaft for damage and replace if necessary

Rotating component out of balance

Check the main shaft, tail rotor, main rotor blades and main frame for

damage and replace as necessary