Thread subject: Whaler Central - Boston Whaler Boat Information and Photos :: How do you measure the shaft length on your outboard
Posted by countryred on 07/13/12 - 5:59 PM
#1
I'm reading a lot about shaft length, where do you measure shaft length from?
Posted by Joe Kriz on 07/13/12 - 6:05 PM
#2
Moved this to the "Engines" discussion area instead of the "General"
This is the second one...
Please use the correct forum for the question at hand.
Posted by countryred on 07/13/12 - 6:15 PM
#3
I'm new thanks for the guidance
Posted by Tom W Clark on 07/13/12 - 6:35 PM
#4
You don't measure shaft length really. Shaft length of just the height of the transom a given motor is designed to fit.
A lot of folks make the mistake of thinking that shaft length is the distance between the cavitation plate (aka...anti-ventilation, A/V plate, etc.) and the apex of the motor mounting clamps or "hooks". It is not. That distance will vary from motor to motor even within a given brand.
I have measured Long Shaft (20") motors that were as much as 23" and as little as 19-1/2" to the A/V plate. But they are both 20" shaft motors.
Posted by Bake on 07/13/12 - 7:07 PM
#5
Yep just measure the transomif your checking Your boat. If you want to check a motor that us not on your boat measure from the bottom of the ears that set on the transom down to the anti cavitation plate. It will give you a measurement that will be close to the 25 or 20 inch measurement.