parts of a boat propeller - the basics
learn it - test it - check it
Glossary:
- Outer Hub = Exterior hub
- Inner Hub = Hub inside (sacrificial centre)
- Splines / Ribs = Connections between inner & outer hub
- Diffuser Ring = Flare ring on the back
- Diameter = Distance across the circle swept by prop blade tips
- Pitch = Distance prop 'theoretically' travels in one revolution
- Rake = Angle blades are set relative to outer hub
- Hole Shot = From dead stop (in the hole) to up on the plane
Blades:
- Blade Tip = furthest bit from the hub
- Blade Back = Blade side facing forward
- Blade Face = Blade side facing backwards
- Blade Root = Attachment point to hub
- Leading Edge = Forward part of the blade
- Cupping = Curl in the blade towards the trailing edge
test yourself:
check yourself:
additional Resources:
- Yamaha Propellor Selector: http://www.yamahapropselector.com/propSelector/web/