Preassembly
Top Foil Length
Length Chart
Dimensions
Inches
mm
A
Center of Pin to Bottom of Terminal
B
Bottom of Terminal to Top of Foil
.5*
13*
C
Top Foil Length
D
Number of Foils ________ x 84" (2133.6 mm)
E
Bottom Foil
24.0
610
F
Bottom of Foil to Crosspin
19.1
485
G
Crosspin to Clevis Pin
Pin-to-Pin Length
*Add 1.12" (29 mm) if using a Halyard Deflector.
Measure A and add to this chart
and length chart below
Inches
mm
A
B
.5*
13*
E
24.0
610
F
19.1
485
G
Total A+B+E+F+G
*Add 1.12" (29 mm) if using a Halyard
Deflector.
A
C
D
E
F
Pin
to
Pin
B
8
MKIV Unit 1
Make sure upper
measurement points
of A and pin-to-pin
are the same.
1
Pin-to-Pin Length
2
Subtract ABEFG
–
3
Result (Pin-to-Pin – ABEFG)
4
Subtract D
–
To find “D” pick number from chart below that is closest to,
but not greater than total from step 3.
Inches
mm
3 X 84 = 252
4 X 84 = 336
5 x 84 = 420
6 x 84 = 504
7 x 84 = 588
8 x 84 = 672
3 x 2133.6 = 6400.8
4 x 2133.6 = 8534.4
5 x 2133.6 = 10668
6 x 2133.6 = 12801.6
7 x 2133.6 = 14935.2
8 x 2133.6 = 17068.8
Example–If result from Step 3 is:
500 inches “D” = 420 inches 12000 mm “D” = 10668 mm
5
Result (C) Top Foil Length
After completing worksheet above fill in A, C, D, and G below. Add
“A” through “G” to confirm total equals your pin-to-pin measurement.
Length Check
Alternate
Measurement
Point
A
TOP FOIL LENGTH WORKSHEET
G
G Toggle Distance from Lower Clevis Pin to Crosspin Hole
Toggle Part No.
Type
Clevis Pin
G Distance
7411.20 1/2
Eye/Jaw reversible
1
/
2
"
12.7 mm
1.75"
44 mm
7311.20 1/2
Jaw/Jaw
1
/
2
"
12.7 mm
1.75"
44 mm
7311.20 5/8
Stud/Jaw
5
/
8
"
15.9 mm
4.00" 102 mm
7311.21 1/2
Long Link Plate w/Toggle
1
/
2
"
12.7 mm 15.00" 381 mm
7311.21 5/8
Long Link Plate w/Toggle
5
/
8
"
15.9 mm 15.25" 387 mm
Note: If long link plate is shortened, dimension must be changed or foil will be too short.
Measure distance from crosspin down to where clevis pin attaches toggle to boat and
use this dimension in G above.
Pin
to
Pin
