Thread: Mini-HowTo How to choose a power system
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Old Sep 09, 2007, 04:39 PM
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Melbourne Australia
Joined Jun 2006
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Hi FF,

I use a Hyperion E-Metre. It is the best little gadget you will ever buy for e-flight. It has a tachometer built in and it can calculate all sorts of stuff you might never even need to know. Check it out!

About pitch.

The higher the pitch the higher the load on the motor. For the same size motor the higher pitch prop will spin slower and create less thrust. As the model builds up speed the prop will become more efficient. It's like riding a bike in 1st gear (= low pitch). It gives the equivalent to high thrust but low speed like if you want to hover 3D model. Move to top gear on your bike and the load on your legs makes it almost impossible to take off, but once you get up to speed your legs can take and maintain the load. A prop with high pitch is the same unless you use a larger motor.

I hope this helps. If not let me know. I think I will revise the guide to clear this up. Thanks for pointing it out.
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