3
Mast Tang
Assembly
Installing
Mast Tangs
Measurement
from
Chart A
Top View
Tangs installed
on widest part
of mast
Installing Mast Tang and Wire Assembly
If you are installing system with the mast up, take the following parts up in the
bosun's chair or send them up with a messenger line. (Follow all precautions to insure
the safety of the person aloft. Use a safety halyard and make sure halyards are in good
condition. Make sure no one is standing where they could be hit with dropped tools.)
WARNING! When drilling through mast, do not let drill bit contact the halyard that is
holding you aloft! This may cause the halyard to fail. Limit depth.
Tape measure
Screw Method
Port and starboard templates (attached to pg. 3)
Drill with
5
/
32
" (4 mm) drill bit
Tape for template
#10-32 Tap & Handle
Tang assembly including wires and blocks
Slotted Screw Driver
Hammer
Rivet Method
Center punch
Drill with
13
/
64
" (5 mm) drill bit
Rivet Gun
Note: before going up the mast, insert the middle screw or rivet into the tang.
Squeeze the top and bottom of the tang together to insert the screw or rivet. It
may be necessary to use a pliers or vice grips.
Measure up from the top of the boom to the height from chart A (page 2).
Moveable Gooseneck - If the gooseneck is capable of moving up and down, measure
from the top of the boom when the boom is positioned in its normal sailing position.
Mark the mast at this point.
Tape the template to the side of the mast so the middle hole is even with your mark.
Line the template up so the vertical line is parallel to the side of the mast. See drawing
below.
Use center punch to mark (4) four tang holes. Remove template and drill (4) four holes.
DRILL HOLES: Screws
5
/
32
" (4 mm)
& Tap
#10-32
Rivets
13
/
64
" (5 mm)
Attach tang beginning with center holes.
