Boat inboard propeller calculator full#

A lower pitch prop will perform better for wakesurfing and wakeboarding than for high speed activities such as slalom skiing and barefooting. A lower numerical pitch number means higher engine RPMs relative to boat speed, which is translates to better performance for slower speed activities. In most cases, pitch is also the most important variable for controlling boat performance. Obviously we don't live in the ideal world, and slippage does occur, but for the purposes of comparing one prop to another, pitch is instrument. For example, a prop with a pitch of 12' would travel forward one foot after completing one revolution.

Boat inboard propeller calculator full#

Basically, pitch is a measurement of the distance the prop would travel with no slippage after making one full revolution. Often times a deceiving measurement, once understood, pitch makes a lot of sense. When it comes to props, the question we most often hear from our customers is 'what is pitch?'. Typically the diameter is limited by either clearance between the hull or the trailer, which is important to check. For higher speed activities like slalom skiing and barefooting, a moderately sized prop will provide better performance. In general, for slower sports, like surfing and wakeboarding, the larger prop diameter the better.

More diameter also means more rotational inertia, which means the prop will not rotate as fast. In general, more diameter means more surface area, which means better transmission of power from the engine to the water. This specification is pretty straight-forward measure from the middle of the prop's hub out to the end of one blade and double that distance. Depending on the brand of prop, most of these measurements will be listed on the prop hub. Understanding the way propellers are measured is paramount to gaining the knowledge needed to choose the right prop for your boat. WakeMAKERS is the largest prop dealer for watersports boats in the world, and we've used our decades of experience to distill all the options down to a specific recommendation based on the individual year/make/model of boat and how you typically use it. If you don't care about the specifics, and just want to find the perfect prop, refer to our exclusive PropFinder Tool. You must look at the prop's diameter, pitch, cup, rotation, bore, and more.įear not, we've developed this Basics of Propellers guide to help answer all those questions to make sure you'll find the perfect prop for your specific application. There is a lot of terminology and measurements that the everyday boater won't understand. Shopping for a new propeller, whether it's simply to replace a damaged one, or because you're looking for better performance, can be a daunting, confusing process.