That is a really good question. Years ago I built a published design by
Bill Henderson that had both props rotating on bearings. This required
three hands to wind and launch since I had no brake on the winder and it
would have been difficult even if I had.
On the contrary, some people claim that having bearings at both ends and
both props rotating is less likely to break on impact since both rotors
can move relative to the heavier motor stick (or tube) and motor.
Therefore, maybe one rotor fixed to the stick is better on the bench but
both rotors free to rotate is better in the air.
Fred Rash
On 3/7/2011 7:17 AM, Eric wrote:
>
> Was watching some of the helicopter event at our SO regional on
> Saturday. Can someone explain if there is a reason to let both rotors
> turn relative to the motor stick versus keeping one rotor fixed to the
> stick? Seems like I've seen successful designs both ways.
> Thanks,
> Eric Monda
>
>
Received on Mon Mar 07 2011 - 06:00:58 CET
This archive was generated by Yannick on Sat Dec 14 2019 - 19:13:46 CET