MinnKota

Choosing the correct shaft length is important so that the angler’s electric motor does not cavitate, creating fish-spooking noise. The rule of thumb is that the top of the motor section should be submerged 12". In general, shaft length selection is more critical with bow-mount motors versus transom-mount motors. Most boat transoms are similar in their distance to the water, and Minn Kota’s standard transom shaft lengths should be adequate. With bow-mounted motors, there is much greater variation in shaft length requirements. Measure down from the mounting surface of the transom or bow to the water level. Add 5" to waterline measurement for fishing in rough water. Add 12" to waterline measurement for steering a hand control motor while standing. Use this measurement and the tables below to find the appropriate shaft length.

Transom Guide

Transom to Waterline	Recommended Shaft Length
0"-10"	30"
10"-16"	36"
16"-20"	42"
Over 22"	Consult Factory

Bow Guide

Bow to Waterline	Recommended Shaft Length
0"-10"	36"
16"-22"	42"
22"-28"	48"-52"
28"-34"	54"-62"

Engine Mount Guide

• Minimum clearance required from spine of outoard to end of cavitation plate (see diagram at right).
• Cavitation plate to waterline 13" (minimum).

 

Boats do not tend to go in a straight line. Because of this, it is much easier to pull a boat than to push a boat. It is also easier to move the bow of the boat sideways compared to moving the transom. Therefore, a bow-mounted electric trolling motor allows for much greater boat control and positioning. If quick-response boat control and positioning is what you are looking for, a Minn Kota bow-mount electric trolling motor is a must.