Running Hardware

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R/C Tips › Tips For Radio Control Boats › Running Hardware

Running Hardware Does Not Have to be Puzzling.

The running hardware of the RC boat can be a mystery to the novice. The power created by the inboard engine is transferred to the propeller by a drive shaft. It exits through a "stuffing box" (a tube filled with grease), which lubricates the shaft and keeps water out of the hull. Some stuffing boxes include needle bearings for superior performance.

Some remote control boats use a flexible drive shaft where the propeller and rudder are mounted behind the boat and power is transferred from the engine to the propeller by a flexible cable, which exits through the bottom of the boat. This eliminates the use of universal joints beneath the water.

Beneath the hull are additional fittings. A strut, which supports the drive shaft, also provides a solid mounting for the propeller and absorbs the thrust from the propeller, transferring it to the boat. Immediately behind the propeller is the rudder for steering the boat and the water pick-up tube. Water expelled by the propeller is caught by the tube and routed through the engine's water jacket to cool it. The heated water is then expelled overboard.

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