(steve) wrote in message . com...
Hi Larry:
The compensating weights are sticking up on metal bands that are about
1" wide and have square weights on the end. They are located on the
forward upper right of the engine area and nearly directly above and
behind the right seat. They are for easing the weight necessary for
the collective/cyclic input. The thru bolts on them are hard to
inspect except when they are removed.

Not to throw a monkey wrench into the works but those weights you are
describing are not used for collective/cyclic input. According to the
Hiller manual they are for vibration dampening of the cyclic controls.
"Vibration in the cyclic control system is dampened by two damper
assemblies, ine installed on each upper firewall bellcrank. Weights on
the damper assemblies are preadjusted to give the damper a natural
frequency of 690 cpm +/- 10 cpm. Both rectangular and cylindrical
weights are used.

I believe the weights you are describing that pertain to the
collective is the ballast assembly. This is located on top of the
rotor head and has two curved arms that come down on opposite sides of
the rotorhead. In the ends of these tubes weights can be inserted to
provide the appropriate amount of 'pull' when actuating the collective
and to adjust for collective stick 'creep'.


Steve
You are right! Now you see why I was never certified as an A&P! To
further illuminate their location, they always reminded me of the
"rabbit ear" antennas on televisions. That entire rotorhead assembly
was different from the Bell and was a big difference when going from
one to the other in flight control characteristics.
Thanks for the clarification and correction.
Rocky