Harken 447 User Manual
INSTALLATION SHEET
15:1 Power Dinghy Vang
447 (System) or 455 (Lower Assembly)
N15W24983 Bluemound Road • Pewaukee, WI 53072 U.S.A.
Telephone: (262) 691-3320 • Fax: (262) 701-5780
Web: www.harken.com • Email: harken@harken.com
Max working load = 450 lb (204 kg)
Breaking load = 1200 lb (544 kg)
Max sail area = 125 ft2 (11.6 m)
Lower line
(5 mm)
Parts included (447 only)
Lower assembly
16mm AirBlock
Upper block 16 mm AirBlock
Upper Line: 10' of 3mm polyester line
Lower Line: 10' of 5mm polyester line
®
405
®
w/becket #407
Tools you must supply
Drill motor
5/32" (4 mm) drill bit (for screws)
10-32 (5 x .80 mm) tap (for screws)
Screw driver (for screws)
3/16" (5mm) drill bit (if pop rivets are used)
Pop rivet gun (optional)
Centerpunch
Pencil or fine-point marker
407
405
Upper line
(3 mm)
The enclosed vang is not for use on the
Laser. The Laser vang is a different part
and is only available through Laser
builders or their dealers. Please contact
your Laser dealer regarding availability.
Lower assembly
(455 if purchased separately)
Parts you must supply
10-32 (5x .80 mm) stainless steel screws
(optional)
– or –
3/16" (5 mm) stainless steel pop rivets
Use shackle (246) if there is a bail or strap
to attach upper block to boom.
Use eyestrap (073) if there is no bail on
boom.
Part 1 – Reeving Line
Note: The following section is for replacing line on the 447 system, or
assembling if you purchased the 455 separately. If you purchased the
Dinghy Vang system 447, line is pre-reeved. Skip to Part 2: Mounting
Instructions.
Line replacement chart
Length AB 14" 16" 18" 20" 22" 24" 26" 28" 30" 32" 34" 36"
3:1 28" 32" 36" 40" 44" 48" 52" 56" 60" 64" 68" 72"
5:1 28" 37" 46" 54" 63" 72" 80" 89" 98" 106" 115" 124"
Typically 3:1 is the heavier line that exits from cam. 5:1 is the lighter, gross trim line. Line Lengths
are close, but add extra for adjustments on individual boat. Be sure to add extra line to the 3:1 to
accommodate the distance from vang fitting to helm.
Lower assembly
Tie off one end of 5 mm line on becket of 405 block. Pull line through front of lower assembly,
around top sheave from the bottom. Pull line back out of lower assembly, around sheave of 405
block from the top, and back into lower assembly. Then wrap around lower sheave from the top,
and pull line out through bullseye and cam.
Start here
A
Length from
base of mast
to boom
attachment
B
Upper block
Fig. 1
A
407
1. Tie off one end of
3 mm line around head
of 405 block. Pull line
up around becket side
sheave of 407 block,
and down around
sheave A on end of
lower assembly as
shown.
Start
here
405
Continues on Fig. 2
B
End of lower
assembly
A
continue
from here
A
Fig. 2
End
here
B
407
2. Pull line back up from
back side of sheave A on
end of lower assembly,
around top of the back
sheave of 407 block. Then
pull line down around
sheave B on end of lower
assembly. Then bring line
back up to becket of 407
block and tie off.
405
B
End of lower
assembly
405
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