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Engine & Controls
V-DRIVE PROPELLER ROTATION
Left Hand Rotation
Right Hand Rotation
The blade section closest to the boat that cuts through
the water first is called the leading edge. Again, if you
follow the leading edge on the above propeller it will
trail down to the left thus being a left hand rotation
propeller.
Note: The diameter of a propeller is measured from the
center of the propeller out to the tip of the blade and
multiply by 2.
The pitch is the distance that propellers would move
inone revolution if it were traveling through a soft solid.
Normal stamping for diameter and pitch on Regal
propellers is on the hub. For example, a 18x21 propeller
means that the diameter is 18” and the pitch is 21”
Sometime propellers are cupped. The trailing edge of a
blade has a slight curl outward (away from the vessel).
It is said that a V-drive propeller has a certain cup like 5
which is usually stamped in the hub. A cupped propeller
will normally allow more “bite” in the water.
Trailing
Edge
Diameter & Pitch
Stamping
If you follow the leading edge on the above propeller it
will trail down to the right thus being a right hand rotation
propeller.
Leading Edge
DownTo Right
Leading Edge
Down To Left
Cupped
Trailering
Blade
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