Harken 1807, 1807HL System A Battcars: built before 2005 - Manual (Page 14)

14
Use a cloth to fill in the space between the ears of the
headboard plates.
Use enough pressure so rings will fit in coupler. The inside dimen-
sion of the coupler is .535" (14 mm).
Make sure the ring fits inside the coupler.
Installing 1807 Light Duty Headboard Coupler Car Assembly
Maximum Mainsail Area
Monohull 425 ft2 (40 m2)
Multihull 350 ft2 (33 m2)
Headboard Plate Thickness
1 /
16
” (1.5 mm) or 1 /
8
” (3 mm) per plate
Maximum Thickness of Headboard Plates and Sail
9 /
16
” (14 mm)
The 1807 light duty headboard coupler is designed to attach to
standard headboards with some headboard modification.
Note: If
1 /
16
" (1.5 mm) plates are used, a stainless steel headboard
liner must be used in the hole for the coupler.
Halyard Attachment Hole
If the headboard has two halyard attachment holes, use the aft hole.
If not, drill a second hole large enough to accept the halyard shackle
pin. Locate hole approximately 2 1 /
2
" (63.5 mm) aft of the existing
hole.
If the halyard attachment hole is not moved aft, the top of the head-
board will cock aft, pushing the bottom of the plate into the coupler.
Coupler Attachment Hole
Use a stainless steel headboard liner with an inside diameter of at
least 1 /
2
"(12.7 mm). Although a liner is recommended, 1 /
8
" (3 mm)
thick headboard plates could be used without a liner.
Drill the coupler attachment hole so the center is 4" (101 mm) down
from the top of the headboard and approximately 1 1 /
2
" (38 mm) from
the front edge of the boltrope.
You must leave at least
3 /
8
" (9 mm) between the front of the head-
board plate and the front edge of the coupler attachment hole.
Sailmaker’s Instructions