Quote:
Originally Posted by maxxximatoze
For info (and memory for me)
I have measured again I0, but this time with a higher motor temp (around 60°C) and the kv is rising up a little with temp (from 2220 to 2250) and I0 go down a little (-300mA from 4A to 3.7A@24V and from 3A to 2.7A@16V)
So the calculated max efficiency at 60°C of the motor is 93.7% for 16V and 91A (50W copper losses and 43W iron losses), and 94.0% at 24V and 131A (106W copper losses and 89W iron losses)
The esc+motor max efficiency is calculated to be around 90/91% for 16/24V
In fine, it's a pretty good motor with some high efficiency :)
I'm curious to see what would happen with hybrid ceramic bearing. I think I will do some tests later.
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Ceramic bearing may decrease IO somewhat. But I wouldn't expect much of a difference.
When you compare our motor with others, you will notice our IO is very low, and efficiency higher.