Quickie Q2 Lite Construction Manual - page 6

Q2BT11

 21 August, 

1981

MASS BALANCING ELEVATORS. In 

preparation for testing on 

turbocharged Revmasters and 

possible A-65 thru C-85 

installations, we have further 

explored the very high speed area 

of the Q2 operating envelope. We 

have found that mass balancing the 

elevators improves the ride 

qualities at high speed. Therefore, 

we are supplying to all builders 

the drawings and hardware to mass 

balance all Q2 elevators, and 

recommend this before first flight. 

See pages

...

for details.

ELEVATOR MASS BALANCING

.....

Locate the two Q2CSA11 arms and the molded lead weights.

.....

These elevator mass balance arms can be retrofitted to the elevator 

control system even after the canard has been mounted to the fuselage. 

This will allow a closer clearance with the fuselage sides and maximize 

the available legroom. If the mass balance arms are installed prior to 

mounting the canard, careful measurements must be made to assure 

clearance with the fuselage sides.

.....

Begin by attaching a molded lead weight to each Q2CSA11 as shown.

.....

Next, remove the two bolts holding CS20 in position, and slide it 

outboard through the CS14 phenolic bearing until a Q2CSA11 arm can be 

slid onto the tube with the lead weight projecting forward. Reinstall the 

bolts holding CS20 in position.

.....

Then remove the three bolts securing Q2CSA8 and slip it inboard 

until the second Q2CSA11 arm can be slid on the outboard end inward with 

the lead weight projecting forward. Reinstall the bolts holding Q2CSA8 in 

place.

.....

Locate the Elevator Rigging template and jig the elevator in the 

full trailing edge up position. With the elevator in this position, each 

Q2CSA11 should be almost resting on the canard upper surface just inboard 

of the fuselage. Note the piece of felt called out as a bumper stop. The 

Q2CSA11's are located as far outboard as practical so as not to interfere 

with pilot or passenger legroom. Verify that when the elevator is rotated 

to full trailing edge down position, that the arc of each Q2CSA11 clears 

the fuselage and all other components.

.....

Finally, return the elevator to the full trailing edge up position 

with each Q2CSA11 resting almost on the canard, and drill in the one AN3-

12A bolt per side to attach the Q2CSA11's to Q2CSA8 and CS20.

.....

Leave the CS13 pitch control arm unattached from Q2CSA8, and remove 

the two AN4-11A bolts attaching the universal joint to Q2CSA8 and CS20. 

Remove the universal joint so that each elevator can rotate independently 

of the other. Make sure that you have lubricated all of the bearing and 

hinge points to reduce the system friction to a minimum. It is desirable 

for each elevator to balance at 0 degrees to 2 degrees trailing edge up 

with all painting and finishing complete. Remove lead, as necessary from 

the molded lead weight until that position is reached. Each elevator 

should rotate freely about the hinge points when given a slight nudge.