Sailmaker Instructions
Luff Tape • Tack and Head Shackles • Suncover
January 2001
Unit 2 MKIII
6
■
Sail Type
The Harken furler will work with conventional sails or
sails with built in shaping devices such as Aeroluff
®
,
Pirini Luff or foam luff.
■
Luff Length
Note offsets above and below the sail.
A shorter luff may be required if a halyard restrainer is
necessary (page 30) or a toggle or link plates are used
(page 8) below the furler to raise the drum.
If the luff of the sail is not long enough to put the
halyard swivel near the top of the headstay foil,
make sure a pendant is added, see page 30.
■
Tack Setback
Note setback for the tack shackle and cut the sail
accordingly.
■
Luff Tape Size
Unit 2 requires number 6 (
6
/
32
" or 5 mm)
luff tape.
■
Luff Tape Length
Cut off the top of the luff tape so it is 18 to 24" (450 to
600 mm) below the head of the sail. This will allow the
head to lag behind the rest of the sail to help flatten
the sail. It will also help the head to roll more smoothly.
Note feeder height and extend the bottom of the luff
tape downwards so it is below the feeder. This will pre-
vent the luff tape from catching in the feeder as the sail
is lowered. *The 36" (914 mm) minimum pertains to
shortened bottom foil installation, see page 13. Other
installations will have a minimum feeder height of
42
1
/
2
" (1179 mm).
■
Tack and Head Shackles
Make sure tack and head
shackles fit the sail rings.
The minimum inside
dimensions of the standard
head and tack shackles are:
(A) 1
3
/
4
" (44 mm) and
(B)
11
/
16
" (17 mm)
■
Suncover
Suncovers may be installed on either side of the sail.
However, make sure you match other sails in the cus-
tomer's inventory.
Connector
Foil
Halyard Shackle
Head
Shackle
Feeder Entrance
Tack Shackle
Pivot
Point
Clevis Pin
5
/
8
"
16 mm
1
5
/
8
"
41 mm
8
7
/
8
"
225 mm
6" Max
152 mm
4" Min
102 mm
Actual Size
46
1
/
2
" Max
1181 mm
42
1
/
2
" Min
1179 mm
*36" Min
914 mm
12
1
/
4
"
311 mm
6
1
/
4
"
159 mm
9
3
/
4
"
248 mm
13
1
/
8
" Max
333 mm
11
1
/
8
" Min
282 mm
16
1
/
4
" Max
413 mm
14
1
/
4
" Min
362 mm
9
1
/
2
"
241 mm
A
B
