Determining Recommended Outboard Mounting Height - Mercury Optimax User Manual

Description
Nut
Determining Recommended Outboard Mounting
Height
e
a - The solid line is recommended to determine the outboard
mounting height.
b - The broken lines represent the extremes of known
successful outboard mounting height dimensions.
c - This line may be preferred to determine outboard
mounting height dimension, if maximum speed is the only
objective.
d - This line may be preferred to determine outboard
mounting height dimension for dual outboard installation.
e - Outboard mounting height (height of outboard mounting
brackets from bottom of boat transom). For heights over
56.0 cm (22 in.), a propeller that is designed for surfacing
operation is usually preferred.
f - Maximum boat speed (MPH) anticipated
OUTBOARD INSTALLATION
63.5 cm
(25 in.)
60.9 cm
(24 in.)
e
58.4 cm
(23 in.)
56.0 cm
(22 in.)
53.3 cm
(21 in.)
50.8 cm
(20 in.)
48.2 cm
(19 in.)
10
Nm lb. in.
47.5
c
a
20 30 40
f
92
lb. ft.
35
d
50 60 70
18562
b
80