Weights Comparisons – Brushless vs. Brushed / NiHm vs. Lipo
A handy little kitchen-scale* allowed us to make some weight analysis:
We’d just received the new Etronix Brushless 10Turns + Esc set and we were curious to check what the difference in weight would be. So we took:
- a standard brushed motor – GM Racing Purple Tiger – 21 Turns
- vs.
- the new 10T brushless motor by Etronix.
174-151 = 23 grams lighter. In all fairness though, the Brushless ESC is heavier probably by more than just 23 grams.
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The real and more interesting comparison is in the type of battery we can use with the new Brushless Set – NiHm vs. Lipo:
- an old NiHm 3300 mAHr
- vs.
- a new Lipo 4000 mAHr (20c)
359-213= 146 grams lighter which is a considerable 10% of the overall car’s weight!
We saw a BIG improvement in Speed (due to Motor) but mostly in Run Time. We have two of these new Lipo 4000 mAHr batteries and, in all fairness, we still haven’t managed to run them to their 6v lower limit. (the weather always forced us off the track before the batteries gave in)
One really pleasant surprise was the Lipo-friendly ESC (Viper V12r) which allows us to use these new excellent batteries also on our previous brushed motors.
Thanks for watching
A.
