Re: High School Student Inquiring about the Science Olympiad Event Wright Stuff

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From: <ykleetx_at_gmail.com>
Date: 26 Jan 2016 22:19:33 -0800

The prop that uses the least amount of power at cruise is the best one.

Power is proportional to torque X RPM, but it is not easy to measure each precisely enough during cruise. In addition, it's not easy to isolate when "cruise" happens. It takes a lot of effort to measure power, although it can be done. Very few people do this.

However, to get the most bang for your time and effort, start with a prop pitch that's reasonable. Do a little reading on HPA on what that is. Next, start with a reasonable rubber motor length. Again, do a little more reading. From here, work on trim and getting the most out of your rubber. Finally, make small adjustments on your rubber length/cross-section to really match the prop, model, and rubber.

-Kang

Received on Tue Jan 26 2016 - 22:19:34 CET