HobbyKing.com New Products Flash Sale
nickatredbox's blog
Posted by nickatredbox | Nov 15, 2012 @ 03:32 AM | 1,629 Views
http://kiwitricopter.blogspot.co.nz/...-edf-with.html



500 Grams of thrust 90mm EDF with Turnigy L2210-1650

http://www.youtube.com/watch?feature...&v=Je9fi7cHIo4

Cobbled together 90 mm fan with 250 Watt Turnigy L2210-1650 Bell Style Motor (250w) seeing if I can get decent efficiency from a small fan turning slower.

http://www.youtube.com/watch?feature...&v=Je9fi7cHIo4



Weighs around 150 grams now.

https://docs.google.com/spreadsheet/...0ptZ25mVkZUUlE

On 14.8 Volts its pushing almost 500 Grams, not so bad thrust mapping is as follows.

100 Grams 1.9 A 27.6 Watts
156 Grams 3.0 A 42.9 Watts
197 Grams 3.9 A 55.1 Watts
257 Grams 5.5 A 76.0 Watts
296 Grams 6.7 A 90.9 Watts
340 Grams 7.9 A 105.5 Watts
432 Grams 10.7 A 138.1 Watts
492 Grams 12.5 A 155.7 Watts

The data in a spread sheet

The tests were run on two 7.4V 1300mAh Turnigy 20C Lipo's in series, I figure the motor will survive full throttle bursts on 4C and its 10 Amps short of the max, 100 Watts below its spec.

Its surprising as the same motor with a 8 X 6 prop pulled 23.3 Amps on a 3C yielding 520 Grams of thrust at 232.3 Watts.


Got this battery on its way from Hobby King Rhino 1550mAh 4S 14.8v 20C Lipoly Pack

...Continue Reading