Installation manual

90-898305

1-46

The Flo-Torq III plastic drive sleeve assembly has a small forward/aft

clearance so that it or the prop is not locked to the prop shaft. This allows the

two hub pieces to rotate ± 10° relative to each other, and allows the springs to

absorb the impacts from the combustion cycles instead of the clutch dogs.

The plastic drive sleeve assembly has clearance, which allows it to move

forward and aft slightly over the inner brass hub that is supplied with the Flo-

Torq III hub kit. This free movement, along with the spring wires between the

forward and aft section of the plastic hub, act as a shock absorber, reducing

the noise. Do not shorten the inner brass hub of a Flo-Torq III prop hub; the

prop must be allowed to have a slight forward and aft clearance. Aluminum

props do not have the weight and mass (inertia) to remain at a constant

speed. Generally aluminum props tend to remain at crankshaft speed.

Because of this, the clutch dogs do not separate and there is very little or no

prop rattle.

Notes

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