CPT AUTOPILOT CPT Installation Manual page 20

Spoke-to-Bulkhead Clearances
(If the wheel pulley mounts to a wood ring on a wood wheel, or to spoke spacers, use the clearance from the wood ring or
from the spoke spacers when using the charts below)
Full Bulkhead Mount Clearance Chart
Clearance
2.25ʺ (57mm)
2.375ʺ (60mm)
2.5ʺ (64mm)
2.625ʺ (67mm)
2.75ʺ (70mm)
2.875ʺ (73mm)
3ʺ (76mm)
3.125ʺ (79mm)
3.25ʺ (83mm)
3.375ʺ (86mm)
3.5ʺ (89mm)
3.625ʺ (92mm)
3.75ʺ (95mm)
3.875ʺ (98mm)
4ʺ (102mm)
Shims thicker than 2.5ʺ are not advised due to the long
bolts required. We recommend fastening a 2ʺ backing
block to the bulkhead and attaching a thinner shim to
that in order to get the necessary clearance. See diagram
at right.
Clearance
4.125ʺ (105mm)
4.25ʺ (108mm)
4.375ʺ (111mm)
4.5ʺ (114mm)
4.625ʺ (117mm)
4.75ʺ (121mm)
4.875ʺ (124mm)
5ʺ (127mm)
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Shim Thickness
0.75ʺ shim (19mm)
0.875ʺ shim (22mm)
1ʺ shim (25mm)
1.125ʺ shim (29mm)
1.25ʺ shim (32mm)
1.375ʺ shim (35mm)
1.5ʺ shim (38mm)
1.625ʺ shim (41mm)
1.75ʺ shim (44mm)
1.875ʺ shim (48mm)
2ʺ shim (51mm)
2.125ʺ shim (54mm)
2.25ʺ shim (57mm)
2.375ʺ shim (60mm)
2.5ʺ shim (64mm)
Backing Block + Shim Thickness
2ʺ + 0.625ʺ shim (51 + 16mm)
2ʺ + 0.75ʺ shim (51 + 19mm)
2ʺ + 0.875ʺ shim (51 + 22mm)
2ʺ + 1ʺ shim (51 + 25mm)
2ʺ + 1.125ʺ shim (51 + 29mm)
2ʺ + 1.25ʺ shim (51 + 32mm)
2ʺ + 1.375ʺ shim (51 + 35mm)
2.5ʺ + 1ʺ shim (64 + 25mm)
Partial Bulkhead Mount Clearance Chart
(clutch extends past bulkhead starboard corner)
Clearance
1.5ʺ (38mm)
1.625ʺ (41mm)
1.75ʺ (44mm)
1.875ʺ (48mm)
2ʺ (51mm)
2.125ʺ (54mm)
2.25ʺ (57mm)
(refer to Full Bulkhead Mount chart for larger values)
Shim Dimensions
2"
3"
Use #10 screws
(#7 or 3/16ʺ drill size)
Shim Thickness
no shim
0.125ʺ shim (3mm)
0.25ʺ shim (6mm)
0.375ʺ shim (10mm)
0.5ʺ shim (13mm)
0.625ʺ shim (16mm)
0.75ʺ shim (19mm)
2" 2 ½"