Piranha Dual Line Cutter for 1.50" Shaft

Piranha Dual Line Cutter for 1.50" Shaft
Shaft Size: 1.50"
Cutter Diameter: 4.50"
Cutter Width: 0.875"

There are THREE important measurements to consider when ordering a Piranha Dual Line Cutter for your boat.

1) Shaft Diameter:

Piranha Dual Line Cutters are sized based on the propeller shaft diameter. Make sure you confirm your boat's propeller shaft diameter before ordering and keep in mind it could be metric.

2) Propeller Hub Diameter:

Make sure the forward hub of your propeller is not wider than the cutter diameter. Ideally, the propeller hub diameter should be around 1 to 1 3/4" shorter than the cutter diameter listed below. 

3) Prop Overhang:

Make sure you'll have a gap equal to half the propeller shaft's diameter between the forward face of the cutter and shaft bearing housing (or strut) to ensure adequate water flow.  If the water lubricated shaft bearing is blocked by the cutter, it may overheat and become damaged.

EXPOSED TAPER:

Finally, make sure the shaft doesn't start to taper before the propeller. The Piranha will not properly clamp against the taper.