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Frequently Asked Questions

Click a topic below to see Formula's most frequently asked questions.


What is a cupped propeller, and for what applications are they best suited?

Cupped propeller blades have their trailing edges turned slightly up, generally resulting in improved 'bite' of the propeller, which is advantageous in planing and cruise conditions. Cupped propellers are also sometimes used for in-between applications, wherein an ideal selection cannot be found using regular propellers.

updated: 4/1/2008