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The invention provides a power transmitting system for a small boat, such as a water jet propulsion craft, and more particularly, an improved arrangement for connecting an engine output shaft to a propulsion unit input shaft. Also provided is an arrangement for balancing an engine within the craft a

The invention provides a power transmitting system for a small boat, such as a water jet propulsion craft, and more particularly, an improved arrangement for connecting an engine output shaft to a propulsion unit input shaft. Also provided is an arrangement for balancing an engine within the craft against undesirable operational forces tending to render the craft unstable. The connecting assembly includes a coupling arrangement utilizing elastomeric vibration dampening members. One of the dampening members possesses a high degree of elasticity, while another of the dampening members possesses a low degree of elasticity. A

대표청구항 ▼

A balancing arrangement for an internal combustion engine comprising a crankshaft assembly; a rotatable output shaft secured to a portion of said crankshaft assembly; a rotatable flywheel in communication with said crankshaft assembly; means for imparting rotational movement to said flywheel in resp

A balancing arrangement for an internal combustion engine comprising a crankshaft assembly; a rotatable output shaft secured to a portion of said crankshaft assembly; a rotatable flywheel in communication with said crankshaft assembly; means for imparting rotational movement to said flywheel in response to rotational movement of said crankshaft assembly, said rotational movement of said rotatable flywheel being in a direction opposite to a direction of rotation of said crankshaft assembly; said rotatable flywheel weighted so that upon rotation of said flywheel, during engine operation, said flywheel achieves a rotational momentum to offset a rotational momentum achieved by said crankshaft assembly; and further comprising an axle, upon which said flywheel is mounted, and an engine casing; wherein said axle is rotatably journaled within said engine casing at a location above said output shaft; wherein said flywheel is a magneto generator flywheel; and further comprising a first set of gear teeth, said first set of gear teeth provided around the outer periphery of said magnet generator flywheel.