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use the propeller's rotation and inertial force to power the cutting
action. As the offending line enters the propeller vortex, it is wound
toward the propeller hub. (NOTE: It is at this point that, without
SPURS installed, the line would wind itself tighter and tighter,
entering into the space between propeller hub and rope guard, where it
can damage the oil seals.) Instead, the line is engaged by the
rotating cutter blades and delivered to the stationary cutter blade.
The sudden resistance sensed by the stationary cutter forces a cam
action which causes the blade to be pushed outward, meeting the
rotating blade and severing the obstruction. |
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| The cutting force increases in direct proportion to
the resistance sensed by the stationary cutter assembly. This shearing
action means that the cutting blades never actually come into contact
with each other. Hydrophilic and bronze surface bearings maintain
precise cutter positioning when a resistance occurs. With each
rotation the cutters pass each other gliding on a thin lubricating
film of water or within a few thousandths of each other, thus avoiding
surface wear during long passages. Stationary Cutter centers itself in the cutter guides
as it passes through with each revolution of the prop.
 
PLEASE SEE INTERACTIVE
ASSEMBLY FOR MORE INFORMATION |

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