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Old 03-26-2014, 08:32 AM
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aeajr
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EVERYTHING YOU WANTED TO KNOW ABOUT ELECTRIC POWERED FLIGHT
http://www.rcuniverse.com/forum/m_7100376/tm.htm

This e-book will help you.

Also, using a motor selection resource can be helpful too. The Electrifly system works well. I have had good experience with the Rimfire motors.
http://www.electrifly.com/powersyste...tem-index.html

Here is a possible combination for your application. The calculator will let you vary the prop size, flight character, weight and other parameters. This is just one option.





Motor Recommendations

[TABLE]
[TR]
[TH][/TH]
[TH]Best Combination
[/TH]
[TH][/TH]
[/TR]
[TR]
[TD="align: right"]Performance
[/TD]
[TD]Sport
[/TD]
[TD][/TD]
[/TR]
[TR]
[TD="align: right"]Motor
[/TD]
[TD]63-62-250 / GPMG4795
[/TD]
[TD][/TD]
[/TR]
[TR]
[TD="align: right"]Gear Ratio
[/TD]
[TD]N/A
[/TD]
[TD][/TD]
[/TR]
[TR]
[TD="align: right"]Gear Drive
[/TD]
[TD]Not Required
[/TD]
[TD][/TD]
[/TR]
[TR]
[TD="align: right"]Propeller
[/TD]
[TD]18x8 in., Electric
[/TD]
[TD][/TD]
[/TR]
[TR]
[TD="align: right"]Battery
[/TD]
[TD]6400 mAh, 44.4v
[/TD]
[TD][/TD]
[/TR]
[TR]
[TD="align: right"]ESC
[/TD]
[TD]SS-100 / GPMM1870
[/TD]
[TD][/TD]
[/TR]
[TR]
[TD="align: right"]ESC Motor Adapter
[/TD]
[TD]Not Required
[/TD]
[TD][/TD]
[/TR]
[TR]
[TD="align: right"]Motor Mount
[/TD]
[TD]X-Large / GPMP1265
[/TD]
[TD][/TD]
[/TR]
[TR]
[TD="align: right"]Current Draw
[/TD]
[TD]66 amps
[/TD]
[TD][/TD]
[/TR]
[TR]
[TD="align: right"]Approximate Speed
[/TD]
[TD]66 mph
[/TD]
[TD][/TD]
[/TR]
[TR]
[TD="align: right"]Approximate Thrust
[/TD]
[TD]315 oz.
[/TD]
[TD][/TD]
[/TR]
[TR]
[TD="align: right"]Weight of Power System
[/TD]
[TD]63.6 oz.
[/TD]
[TD][/TD]
[/TR]
[TR]
[TD="align: right"]Approximate Flight Time at Full Throttle
[/TD]
[TD]6 minutes
[/TD]
[TD][/TD]
[/TR]
[TR]
[TD="align: right"]Watts per Pound
[/TD]
[TD]126
[/TD]
[TD][/TD]
[/TR]
[/TABLE]

Flight times can be increased by reducing the throttle or by using two battery packs connected in parallel. Please note that the weight of the motor mount is not included in the system weight. The weight of the different mounts can be found on the ElectriFly web site. This is configured for a 12S Lipo pack.

Last edited by aeajr; 03-26-2014 at 08:36 AM.