User Guide

OPTIMIZING SPIRAL CAM & 1/2 PERFORMANCE

To verify factory

setting of bows

featuring Hoyt’s

Spiral Cam &

1/2 System, you

should examine

the cams’ built-

in performance

marks. On both

the top and bot-

tom cam, the

limb should lie

somewhere in

between the

marks. (See fig

16) It is not necessary to have the limb exactly cen-

tered between the marks. The let-off of your Spiral

Cam & 1/2 bow can be adjusted using a standard

allen key. The ATA let-off values of the Spiral Cam

& 1/2 System vary from 55% to 65%. You will notice

the four draw-stop holes on the bottom cam num-

bered 1 through 4. (See fig 17)

For 55% let-off, the

draw-stop peg

should be placed

in hole #4.

Simply remove

the draw-stop peg

from its original

position, place it in

the desired posi-

tion, and tighten.

CABLE

SIDE

fig 17

Draw Stop in Highest Let-off Position

fig 16

Performance

Marks

Buss Cable

Control

Cable

Bowstring

STRING

SIDE

Limb