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Gimbal balancing U2, Shadow, Clipper, PRO
BALANCE PROCEDURE
1. Mount simulated camera weight (maximum payload capacity of sled
recommended) onto sled and place onto appropriate balance spud.
2. Fine tune fore-aft and left-right balance by adjusting fore/aft and
side/side adjustment knobs on stage. Verify balance using a bubble
level attached atop the stage on a flat surface.
3. Balance sled with an approximate 3-4 second drop time by fine tun-
ing vertical position of gimbal.
4. With the front of the sled facing left, and the stage perpendicular
to the curved gimbal handle, raise the sled to the right to a horizontal
position and release until it swings back to a vertical position.
5. The sled should always return to the established vertical position
as noted by the bubble level. If it does not, fine-tuning of the gimbal
spacers 800-7179-XX or 815-7110-XX on either side of the yoke will
be required as noted in the next steps to shift the gimbal center with
respect to the yoke to help achieve balance.
a) If after the swing test in step 4 the sled has the right side
of the sled is slightly raised, this will indicate that the gimbal bearing
housing will need to be shifted to the left with respect to the position-
ing in the yoke. (See image below with respect to gimbal orientation.)
b) If after the swing test in step 4 the sled has the left side
of the sled is slightly raised, this will indicate that the gimbal bearing
housing will need to be shifted to the right with respect to the position-
ing in the yoke. (See image below with respect to gimbal orientation.)
c) Note that the 800-7179-xx and 815-7110-xx spacers come
in three different sizes (.000”, +.001” and -.001”) as indicated by the
grooves cut into the parts (Refer to image below). The type of spacer
used will depend on the gimbal that is being balanced.
6. Dock the sled such there is no weight applied to the gimbal.
7. Remove the 815-7111 cap from using the supplied blue gimbal tool.
8. Remove the SCI-D020B1123 (10-32 screw) using a 1/8” hex key,
along with washer WHR-190375.
9. In order to remove the BRG-105421 and spacer, insert 3/16” ball
lock plunger (PIN-137003) into the spacer and pull out the spacer and
bearing.
RIGHT LEFT