Instruction manual

D. Select two #0067 bolts and temporarily thread each into holes provided near the base of the head block. Note

that even though the holes are threaded full depth, the bolts install from the side closest to the slot at each

corner. Do not tighten until Section IX , Step 2F.

Step 2: Installing the Bell Hiller Mixers

Parts Required: Bag #

2 #0113 M3 x 10.5 Threaded Double Ball (long threads) 1C

2 #0597-1 M3 x 0.126” x 0.187” Brass Spacer 1C

2 #0109 M3 x 8 Threaded Ball 1C

2 #0050-1 M2.5 x 3 Socket Set Screws 1C

2 #123-24 Pitch Arms 1C

2 #0597-3 M3 x 0.186” x 0.188” Brass Spacer 1C

2 #0115 M3 x 10.5 Threaded Ball 1C

2 #123-26 Bell Hiller Mixers 1C

4 #106-02 M3 x 7 x 3 Flanged Ball Bearings 1C

2 #0091 M3 x 16 Phillips Bolt 1C

2 #0562-1 M3 x .09 Shim Washer 1C

Refer to Drawing #1C

A. Press one #106-02 M3 x 7 x 3 Flanged Ball Bearing into each #123-26 Bell Mixer. It is recommended that

the bearing be installed first in the same side of each mixer. A light amount of Green Loctite is mandatory on

the outer race of each bearing. Insert one #0597-3 Brass Spacer into each bearing cavity opposite the

installed bearing followed by another #106-02 bearing in the opposite side of the bearing cavity in the bell

mixer.

B. Install one #0109 Threaded Ball and one #0115 Threaded Ball into each Bell Mixer, use Blue Locktite,

tighten securely.

Notes About Mixing Ratios and Setup:

The Bell Mixers, Flybar Tube, and Pitch Arms offer various mixing ratio options. The following guides

will help you select your options.

Bell Mixers: The Bell Mixers may be installed on the Pitch Arms in one of two positions:

Position 1: Raised bearing boss side facing away from the Pitch Arm

Position 2: Raised bearing boss side facing Pitch Arm

Flybar Tube: The Flybar Tube offers two threaded hole positions on each end of the tube for location of

the Double Threaded Balls:

Position 1: Inside Holes

- Increased Flybar Input

- Increased Pitch to Flybar

- Identical ratio as Standard Extreme rotorhead

Position 2: Outside Holes

- Medium Flybar Input