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Old 12-11-2013, 01:45 AM   #1
andy120
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Default Gearbox ratio selection help

Hi
Working from Motocalc i have come up with 2 motor/gearbox sets for my 69" BT spitfire driving a near scale 16.2" prop.
Scorpion S2-5525-210KV at 1.25:1 and a Scorpion HK5020-450KV at 3:1.
Is there a prefered ratio region?

Many thanks
Andy
NZ
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