Abstract: A cooling system for a reciprocating engine includes a main cooling device and a side tank. The main cooling device includes at least one heat dissipation tube that contains an internal fluid for transporting excess heat developed by a reciprocating engine. The side tank is attached to the main cooling device and includes a plurality of exterior fins for dissipating heat to cool airflow. The exterior fins form an adjustable mounting location.

Abstract: A fan and hub assembly (60) having a plastic fan structure (62) molded to a hub (66) to achieve a predetermined resonance frequency. The hub (66) has a plurality of integrally formed arms (84) having one of more openings (88) of a predetermined size and predetermined location for permitting the flow-through of the plastic and to achieve a predetermined resonance frequency of the fan blades (64). A plurality of openings (86) are formed in the hub body (82) to permit the flow-through of liquid plastic to achieve a strong attachment of the blade root (76) to the hub (66).