System A (CB/slider)
12
Determining Track Length
Bottom track must be short enough to remove easily. Use 457 mm to 609 mm
(18" to 24") length. Do not use 3807 track for drilling and tapping.
Remove Old Track
IMPORTANT! Before removing old track, scribe pencil line down either side.
Drill, Tap, and Fasten
After old track is removed, attach string to mast to line up track
during installation.
1. Start at one end of track and work down: Do not drill and tap from both
track ends.
Clamp or duct tape track on mast. Center punch in center of track hole using
a narrow shaft spring-loaded machinist's punch with plastic centering tube or
a transfer punch. Track hole size is 2.05" or 5.2 mm.
2. Drill track hole, holding drill perpendicular to mast face.
Tap threads and install screws using blue Loctite
®
adhesive.
Tip: Use low speed drill with tap for cutting threads.
IMPORTANT! Use blue Loctite
®
adhesive instead of oil for tapping lubricant.
CB/Sliders Systems (Drill/Tap)
Install Track
Part No.
Description
Includes
Purchase from Harken
2707
Track (Micro CB)
Use for masts without grooves or when slugs will not fit. Purchase
stainless steel #8 (4 mm) screws separately.
Do not use 3817
open-backed track. It requires mounting slugs.
See page 11 for
drill/tap sizes and mounting instructions.
2724
Splice links
One needed for each track joint
263
Endstop set
Purchase Separately
#10 (5 mm) Flathead screws
Purchase 10 fasteners/meter of track
Drill
4.2 mm (5/32")
Tap
10-32 (5 x .80 mm)
Track and Accessories
2720
263
2724
3. Align track at joints. Use 2711 splice links and round rods or dowels on
outside of track to align during installation. Hold in place with spring or “C”
clamps until track is secured.
Load all cars before installing bottom track and endstop.
Loctite is a registered trademark of Henkel AG & Company KGaA.
