ISO Insures Propeller Quality

1981 the ISO, or the International Standards Organization, established standards for the manufacture of propellers. This enabled propellers quality qualification. In order to compare the quality, almost all propellers (if it’s not damaged) satisfying Class III. Manufacturer mainly produce Class II propellers, while the propellers Class I and lass S are the propellers of the high quality, eliminating vibrations. Every boat owner will be satisfy with Class I and Class S propeller (off course, if match diameter and pitch)

With an accurate propeller, vibration will disappear and the power used to shake the boat will now be used to push the boat. The result is a threefold gain. More speed, less fuel, and a smoother ride. A true ISO Class 1 or Class S propeller pitch tolerance will save you headaches with warranty issues while offering fuel savings and smoothness!

 

Class Manufacturing Accuracy ISO 484/2 Classes S Very High Accuracy I High Accuracy II Medium Accuracy III Wide Tolerances

ISO Tolerances on Pitch

Class			S	I	II	III
a)	Local Pitch	Pitch of one portion of one blade	± 1.5%	± 2%	± 3%	-
b)	Section Pitch	Mean pitch of one radii of one blade	± 1%	± 1.5%	± 2%	± 5%
c)	Blade Pitch	Mean pitch of one blade	± 0.75%	± 1%	± 1.5%	± 4%
d)	Propeller Pitch	Mean pitch of all blades	± 0.5%	± 0.75%	± 1%	± 3%

Due to the Prop Scan® measuring concept and advances in computer technology we have been able to enhance the ISO 484/2 specifications.

Our Trained technicians will measure and assess your propeller, plus provide a Prop Scan computer generated report, free of charge...

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