What’s your E38-200 Cruising Speed in slack water?

[Christian Williams]

Found a scrap of paper with RPM readings taken by a $25 hand-held laser tachometer. Fixed three-blade Michigan sailor prop, Universal 5432.

5 knots, 1875 RPMs
6 knots, 2275 RPMs
7 knots, 2815 RPMs

The readings on the boat tach are about 100 RPMs higher than these laser readings.

 

[Pete the Cat]

Found a scrap of paper with RPM readings taken by a $25 hand-held laser tachometer. Fixed three-blade Michigan sailor prop, Universal 5432.

5 knots, 1875 RPMs
6 knots, 2275 RPMs
7 knots, 2815 RPMs

The readings on the boat tach are about 100 RPMs higher than these laser readings

If that is the original prop from Ericson, someone did a very good job of fixing the pitch in the factory. My 32-200 with the stock prop seems to have been set well, too. My experience in delivering a number of production boats was that mostly they were over pitched.

 

[Saverio]

My 38 200 Universal 32 hp engine with three-bladed Max Prop propeller, diameter 16 × pitch 14, what are your propellers? Thank you. Xavier

 

[Christian Williams]

Me: Michigan 3-blade prop, diameter 15 marked pitch 12 measured pitch of wheel 11.861.

 

[Saverio]

Me: Michigan 3-blade prop, diameter 15 marked pitch 12 measured pitch of wheel 11.861.

Thank you Mr Williams