GAUI STD 850kv motor
13T Pinion - Calculated RPM (Headspeed) = 1820, Measured RPM = 1900
14T Pinion - Calculated RPM (Headspeed) = 1960, Measured RPM = 2050
15T Pinion - Calculated RPM (Headspeed) = 2100, Measured RPM = 2200
With the STD 850 KV motor and the 13T pionion Desire Power 2200 MAH 25C batteries can easily be used.
Expected flight time of around 4 minutes depending on flight tipe. With Desire Power 330 Mah 22C expected
flight time is 6 minutes
With the 14T pinion the perfromance is close on that of with the 13T pinion on the 2200 with the 3300 Mah packs
due to the 3300 packs being heavier. flight time is less flight time
Witht the 15T pinion the helicopter is potenent but the motor becomes extremely hot, but does nto seem to have any
impact. The flying time drops to 5 minutes
All flight times is based on 80% li-po discharge capacity.
Tonic Z20 motor - 980kv
13T Pinion - Calculated RPM (Headspeed) = 2100, Measured - 1900
14T Pinion - Calculated RPM (Headspeed) = 2260, measured - 2140
15T Pinion - Calculated RPM (Headspeed) = 2420, measured - 2150
The Z20 motor is not a perfromance upgrade but rather an enhancement as it extends flying time by 30% or so.
Using Desire Power 2200mah 25c batteries with the 13t pinion, the performance is not great. Flight times
around 5 to 5.5 minutes without hammering the batteries
The 14T pinion the best option on the Desire Power 3300 batteries. Flight times of around 8 minutes
with average perfromance even with some wild flying
The 15T does not improve performance but flying times drop. Looks like the 15T pinions gears the motor out of its
performance range (power band)
This motor runs alot cooler than the STD even when using the 15T pinion
Tonic Z30 motor - 1100kv
13T - Calculated RPM (Headspeed) = 2350, Measured RPM =
14T - Calculated RPM (Headspeed) = 2550, Measured RPM = 2280
15T - Calculated RPM (Headspeed) = 2750, Measured RPM =
The Z30 motor performs beter that the STD motor. Testign was only doen with the 14T pinion gear. Here you have to use
at least 3300 Mah batteries. Expected flying time is around 5.5 minutes with hard flying
The motor runs relatively cooler compared to the STD but is much heaver and larger than the standard motor. It makes the
helicopter becomes quite heavier and afefcts the overal heli performance which can be felt with hard flying
GAUI upgrade motor 1300kv
13T and 50T Spur Gear - Calculated RPM (Headspeed) = 2342, Measured RPM expected 2400+ (did not do measurement)
This motor as just as light as the STD and slightly bigger. Larger batteries are needed and testing was conducted using
Desire Power 3300 Mah packs. This setup moves the heli. It does run hot as with the STD motor but has no real affect
Hard flying was done for 5min on the 3300's and the batteries were still inside the 80% capacity
All testing was done with 500mm GAUI carbon blades.
This setup was done and tested by Tinus Pretorius from PRF R/c club in Pretoria. Thanks Tinus for the input |
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