Early Bensen rotor head

Sita

Guest
Joined
Sep 20, 2005
Messages
741
I know this is searching for a needle in a hay stack but is there any chance that someone has drawings or pictures of the very early Bensen rotor head,the one mounted in a rubber block ?
I'm not sure but I believe it was the Bensen B-6 which used that kind of "U joint"

Many thanks in advance

Cita
 

pancho

Member
Joined
Sep 1, 2011
Messages
198
Location
Rigby Idaho USA
Aircraft
Precepter ultrapup
Total Flight Time
2800
I have an early Bensen rotorhead. But it doesnt have any rubber blocks, it just has a self centering bearing inside that has just enough to give it 10 or so degres of cyclic action. I sure wouldnt fly on one.
 

Doug Riley

Platinum Member
Joined
Jan 11, 2004
Messages
6,312
Pancho, the Bensen spindle head you refer to uses a spherical roller bearing. It's perfectly safe as long as the spindle is well-made (don't skip the radii).

I have at least 100 hours on one. It had a nice, light control feel but lacked the self-centering pressures of an offset gimbal.

The rubber-block model is even earlier, I believe.
 
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