8
MKIV Ocean Unit 3
UNIT
3
Alternate
Measurement
Point
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
7 x 84 = 588
8 x 84 = 672
9 x 84 = 756
10 x 84 = 840
11 x 84 = 924
7 x 2133.6 = 14935.2
8 x 2133.6 = 17068.8
9 x 2133.6 = 19202.4
10 x 2133.6 = 21336
11 x 2133.6 = 23470
Example–If result from Step 3 is:
800 inches “D” = 756 inches; 20,000 mm “D” = 19202 mm
5
Result (C) Top Foil Length
Pin-to-Pin Length Worksheet
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
30.8
782
G
Crosspin to Clevis Pin
Pin-to-Pin 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
G Toggle Distance from Lower Clevis Pin to Crosspin Hole
Toggle Part No.
Type
Clevis Pin
G Distance
7413.20 3/4
Jaw/jaw with short link plate
3/4"
19.1 mm
5.42"
138 mm
7313.20 7/8
Jaw/jaw with short link plate
7/8"
22.2 mm
6.00"
152 mm
7513.20 1
Jaw/jaw with short link plate
1"
25.4 mm
6.79"
173 mm
7513.20 1 1/8
Jaw/jaw with short link plate
1 1/8"
28.6 mm
7.24"
184 mm
7313.21 3/4
Long link plate w/toggle
3/4"
19.1 mm
22.00"
559 mm
7313.21 7/8
Long link plate w/toggle
7/8"
22.2 mm
22.63"
575 mm
7513.21 1
Long link plate w/toggle
1"
25.4 mm
23.32"
592 mm
7513.21 1 1/8
Long link plate w/toggle
1 1/8"
28.6 mm
23.64"
604 mm
Note: If long link plates of 7313.21 3/4 or 7313.21 7/8 are 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.
Measure A and add to this chart
and “length chart” below
Inches
mm
A
B
1*
25*
E
24.0
610
F
30.8
782
G
Total A+B+E+F+G
Pin
to
Pin
A
IMPORTANT! If top foil
length is less than 5 5/8"
(143 mm), go to page 9.
*Add 1.12 " (29 mm)if using a 7304
halyard deflector.
A
C
D
E
Pin
to
Pin
B
G
F
G
Preassembly
Top Foil Length
