Power Test
Following are 3
consecutive tests that show the incredible power of Power Master speed controls.
The tests were all conducted using my smallest speed control, the Micro
Master 2, which at 18mm x 11mm x 7 mm, is not much bigger than the receiver
plug. The picture left is of the
Micro Master speed control, while the one to the right is a screen shot of the
third test, which shows the general layout, Micro Master 2 connected between
battery (silver item in background), and Multiplex Permax 600 motor with
propeller. Also shown is the end of a Fluke clamp meter measuring current, and K
type thermal probe wire on mosfet under heatshrink in Micro Master (yellow
wire).
Test 1
Propeller 9 x 4 Master Airscrew
Battery Charged 6 cell GP330 NiMH car pack
Mosfet Start Temperature 26.2 °C
Start Current 20 Amps
Run time ~50 seconds
End Current 19 Amps
Mosfet End Temperature 41.8 °C
Test 2
Follows straight on from previous test
Mosfet Start Temperature 39.7 °C
Start Current 19.4 Amps
Run time ~55 seconds
End Current 18.5 Amps
Mosfet End Temperature 41.5 °C (stabilised after about 10 seconds)
Test 3
Propeller 9 x 6 Taipan
Battery Charged 8 cell LG Lion pack (8.4 V charged)
Mosfet Start Temperature 34 °C
Start Current 25 Amps
Run time ~55 seconds
End Current 20.5 Amps
Mosfet End Temperature 51.5 °C, peaked at 52.4 °C
Download Video 3 (9.5 Mbyte). Due to space restrictions this video has been removed from this website.
If you want to see it email me, and I will send it to you.
Additional Information
Performance at 25 Amps with 9 x 4 Master Airscrew propeller.
Micro Master 2 voltage loss 89 mV
Negative wire loss 186 mV
Positive wire loss 176 mV
Motor RPM 9,100 rpm
Maximum allowable Mosfet temp 170 °C (from specs)
It must be stressed that this is not a normal running situation for this controller. The tests were merely to prove the specs on this website are factual and tested.
If you want to see the other 2 videos, send me a line. Contact
If this is what my smallest controller will do, just imagine what Power Master VI or Skymaster 2 could do for you. Both are 4 times this powerful and Mini P2 max is twice as powerful.