Why is my RC helicopter not taking off?
If you have a fixed pitch RC helicopter that won’t lift off, the problem is not enough rotor speed. Some common things to check: Bad/weak battery (usually the most common culprit). Faulty motor (worn out, bearings shot, magnets shot, etc).
How do I track my blade?
To check blade track, place a smooth board just under the tip of the lower blade. On controllable props, move the tip fore and aft carefully through its small range of motion, making small pencil marks at each position. Center the blade between these marks and draw a line the full width of the blade.
Are Longer helicopter blades better?
Longer blades provide less operating clearance. Longer blades not only stall before shorter blades (retreating), but also hit the Critical Mach number at lower air speeds (advancing).
What is normally adjusted to correct an out of track condition that was found on an in flight tracking check?
Vertical corrections
Vertical corrections This adjustment is typically used to correct for out-of-track conditions on the ground and in a hover.
What is helicopter ground resonance?
Ground resonance is an imbalance in the rotation of a helicopter rotor when the blades become bunched up on one side of their rotational plane and cause an oscillation in phase with the frequency of the rocking of the helicopter on its landing gear.
When should propeller blade tracking be checked?
Always have the blade track checked after the hub bolts are tightened. Every propeller is statically balanced at the factory. If the propeller-engine combination feels rough in flight, ask your mechanic to remove the propeller, rotate it 180 degrees on the engine crankshaft flange, and re-install.
Why are helicopter blades twisted?
Twisting a rotor blade causes it to produce a more even amount of lift along its span. This is necessary because rotational velocity increases toward the blade tip. The leading edge is the first part of the airfoil to meet the oncoming air.