Weight of ultralight rotor head

[Aviator168]

What is the typical weight of an ultralight rotor head? An AR-1 engineer said their rotor heads weight 88 lbs. That's very heavy and no wonder it can afford a high thrust line.

 

[Brian Jackson]

That weight is probably for the entire rotor system (blades, head and hub bar). The head itself is substantially lighter but depends on brand/style. They are generally under 10 lbs. I believe.

 

[Aviator168]

That weight is probably for the entire rotor system (blades, head and hub bar). The head itself is substantially lighter but depends on brand/style. They are generally under 10 lbs. I believe.

But he did indicated that 88 lb does not include the weight of the blade, and from the video, it looks weight a lot more than 10 lb.

 

[Doug Riley]

There's probably some confusion about metric vs. English units. That head is a pretty standard design. An assembly of aluminum blocks, hollow where possible. 10-15 lb. You can pick them up with one hand. Heaven forbid that any small gyro's rotorhead weigh 88 lb.