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Old 04-06-2008, 09:58 PM
cyclops2's Avatar
Join Date: Dec 2005
Location: Frenchtown, NJ
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Default RE: 1/2A ducted fan???

About using a small GWS 40 mm EDF . I am using 2 of them powered buy 2...brushless motors.
Each motor pulls 7 amps @ 12 volts or 84 watts. Gives 6 ounces of thrust. 2 of them in a small 1lb. A-10 do a nice scale flight. The rpm is so high I can hear less noise near the peak.

A 2 bladed prop in the same plane, I have one made, wants to jump vertically out of my hand.

My read is, ducted fans are for outragiously powerfull setups. Less blades has always given more thrust & speed for a given power..

The airflow into the carb is dicey.