Pontoon Boat Props: No Mickey Mouse Affair

Pontoon Propeller

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Ever wondered why the propellers you see on the engines of most pontoon boats resemble Mickey Mouse ears? The round, oversized blades – which actually are referred as “ears” in the industry -- really stand out when compared to the sleek, angled blades sprouting from the sterns of most pleasure craft. And for good reason.

“Due to their design, pontoon boats require a lot of push to get them going,” explained David Meeler of Yamaha Marine, which produces two lines of propellers designed specifically for use on pontoon boats, “and the ability to move lots of water to maneuver the boat.”

Both are factors in the design of the large diameter, low pitch, round eared, minimum-rake propellers designed for pontoon boats.

“What you are looking for in a pontoon prop is lots of blade surface” with low pitch and rake angle, said Meeler. The large surface area pushes lots of water and the low pitch and rake allows for the engine to quickly build to the proper RPM for optimum control. Underway, because they push plenty of water, the larger diameter, oversized-ear props allow for more responsive handling, if not higher speed, when operating pontoon boats.

Four-bladed props offer even more surface area with which to move water for speed and control, especially in turns. According to Meeler, four-blade props can be beneficial on pontoons with three tubes, “which have some very different hydrodynamic needs,” and in instances when pontoon boats of any design carry heavy loads or need enhanced cornering capabilities.

Engines of all sizes that are used to propel pontoon boats benefit from being fitted with large-diameter, oversize-eared propellers, says Meeler, Four-bladed props offer even more surface area with which to move water for speed and control, especially in turns. According to Meeler, four-blade props can be beneficial on pontoons with three tubes, “which have some very different hydrodynamic needs,” and in instances when pontoon boats of any design carry heavy loads or need enhanced cornering capabilities.

Most propeller manufacturers offer models intended for use on pontoons boats; many provide selection charts on their web sites to help you determine the best “Mickey Mouse” prop for your particular pontoon.

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UNDERSTANDING PROPELLER PITCH

COMPARISON: PROP HUBS

REPLACING SEALS ON PROP SHAFTS