Glow to Electric Conversions Discuss glow/gas conversion to electric here.

Bridi Shrike Commander


Old 04-29-2013, 05:29 AM
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Default Bridi Shrike Commander

We are building two Shrikes, one glow with twin OS Max 50SX's at 1.8 hp a side. And one electric. I have no clue what size electric motors i need to equal a glow .50 or ESC or batts or prop. Has anyone done a Bridi Shrike ? They run about 12lbs.
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Old 05-05-2013, 04:06 AM
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Default RE: Bridi Shrike Commander

For a start, you can use the Watts per pound thumb rule. For sports planes I use 120-150 watts per pound. Therefore, you would need about 120 x 12 = 1440 watts total. Since this is a twin, you would need two 720 watts motors. So you could start by looking for 700-800 watt motors that use the desired prop for this plane. Most mfg's provide a prop chart for each motor. Look at the chart and it will give you the watts for a given prop at a given battery voltage. That is one way to do it.

Many of the newer motors are list with a glow-powered equivalent. For instance, E-flite has a Power 46 motor that is the equivalent of a .46 size glow motor. Once you find the motor equivalent for your .50 size glow engine, then check the specs listed for the motor (battery, prop, Watts, ESC).

Hope this helps.
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