How to measure shaft on motor

10point

Seaman
Joined
Jul 24, 2006
Messages
57
I need to know if the shaft on my motor is 15 or 20 inch. Do you include the lower unit portion or measure to where the lower unit begins?
 

wilde1j

Vice Admiral
Joined
Apr 15, 2002
Messages
5,964
Re: How to measure shaft on motor

Measure from the AV plate to the inside bottom of mounting bracket.
 

HighTrim

Supreme Mariner
Joined
Jun 21, 2007
Messages
10,486
Re: How to measure shaft on motor

Measure from the inside top of mounting bracket down to anti-cavitation plate above propeller (this is the largest plate/fin directly above the prop)

...sorry too slow
 

Vic.S

Rear Admiral
Joined
May 4, 2004
Messages
4,720
Re: How to measure shaft on motor

But you may well find that the distance you measure will be an inch or so more than the quoted shaft lengths of 15" for standard shaft and 20" for longshaft.
This one is quoted as a 20" shaft but it measures nearly 22.5"

 

10point

Seaman
Joined
Jul 24, 2006
Messages
57
Re: How to measure shaft on motor

So on the picture that Vic has do I measure to the sharpened end of the pencil or non sharpened end?
 
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