R/C Tech Forums - View Single Post - How to figure out brushless motor amp draw
Old 12-04-2023 | 02:32 PM
  #14  
gigaplex's Avatar
gigaplex
Tech Champion
iTrader: (2)
 
Joined: Dec 2015
Posts: 7,762
From: Melbourne, VIC
Default

Originally Posted by shortcut3d
I understand the amp changes with timing, what I’d like to know from the manufacturer is what is the target amp rating for the motors thermal design. That would take a lot of guess work out of adjusting the timing. My guess is that is known because the factory tuned motors, like Fantom Works, seem to target a specific amp draw for the use case. This is based on observations reading motorlyzer printouts from a few Fantom Works and Slot Machine Certified.
If the goal is to figure out the thermal impact of the amps, then you want the average amp draw during a run, not the maximum. Run the car, time how long the run went for, and get your charger to tell you how many mAh you put back in to the battery when charging it. Divide capacity used by time and bam, average current.
gigaplex is offline