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Old Dec 05, 2004, 11:53 AM
all can crash
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Himax 2025-4200 in gws "d" box q?

Can the genII TP1350 handle this setup or do i need the 2100
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Old Dec 05, 2004, 12:00 PM
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Is it 2s or 3s? The 1320 should be fine either way. D gearing sounds low. With my 4200 my gear ratio is 4.5. Yours is 6.6. With 3s and 9x7.5 prop I draw 18 amps. Your batt is good for about 16 so you can get more out if it by gearing lower. If its 2s gear lot lower
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Old Dec 05, 2004, 12:04 PM
all can crash
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3S sorry..
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Old Dec 05, 2004, 12:13 PM
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Chattanooga, Tennessee, United States
Joined May 2003
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Even using a prop as big as 11x7 you'll only pull just over 11A, so you should be fine with the 1320.


Motor: Himax HA2025-4200; 4200rpm/V; 0.75A no-load; 0.075 Ohms.
Battery: Kokam 1500; 3 cells; 1500mAh @ 3.7V; 0.027 Ohms/cell.
Speed Control: Castle Creations Phoenix 25; 0.0065 Ohms; High rate.
Drive System: DD; 11x7 (Pconst=1.17; Tconst=0.95) geared 6.6:1 (Eff=95%).
Airframe: Anything you want.
Conditions: Sea Level, 29.92inHg, 59F

AirSpd (mph) = 0.0
Batt Amps = 11.4
Motor Amps = 11.4
Motor Volts = 10.1
Input (W) = 114.9
Loss (W) = 22.0
MGbOut (W) = 92.9
MotGb Ef(%) = 80.8
Shaft Ef(%) = 73.6
Motor RPM = 38654
Prop RPM = 5857
Thrust (oz) = 23.4
PSpd (mph) = 38.8
Prop Ef(%) = 0.0
Total Ef(%) = 0.0
Time (m:s) = 7:55
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Old Dec 05, 2004, 12:13 PM
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According to my calc youll be drawing under 10 amps static with 10x8 prop. C gearing will give you under 16 amps static and less in the air.
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