title_body: Effect of motor load on ESC? I know that when a prop is caught on something or is slowed down by something it can put extra strain on the ESC or even burn it out. 
  
  If I was using a 2207  motor with an unusually large and heavy prop, would I need a more powerful ESC to compensate for the extra load of the large prop? 
  
  Would the ESC just need a higher Amp rating in order to operate under the increased load?
upvoted_answer: The primary thing that high torques affect in a brushless motor is the current flowing through. It obviously affects your ESCs, but also the motors themselves: high currents have been known to melt/burn the insulation on motor windings, which then short out and wreck the motor itself and possibly the ESC as well. 
  
  If the source of this torque is just a prop, the best way to see the actual effects of it on your particular motor would be to find a datasheet/spec sheet for it that lists thrust and current consumption for different combinations of supply voltage, prop, and throttle percentage, like this one:
  
  
  
  Not all manufacturers provide this kind of data, however. If yours doesn't, or you desire additional information, it's a good idea to browse the site miniquadtestbench.com. They publish the same kind of data, gained from thrust-testing a big range of motor-prop combinations in the lab, and have a handy search tool to find and compare test results for different motors, props and throttle settings. The graphs might be somewhat confusing at first, though:
  
  
  
  MQTB tends to use a greater variety of actual props, but the selection of motors is understandably limited.
  
  If you don't find data on your particular motor in either of these sources, and you only need a ballpark, looking at specs of other motors of the same size and KV should be reasonably close, likely to well within ±10%.