title_body: Are there any extremely small brushless drone motors? I have seen many tiny brushed drones, about an inch from motor to motor, and was wondering whether it would be possible to create a brushless drone that small. Are there any brushless motors available that are extremely small, ones that could fit on the size of drone below? And is there anything else to consider if making a drone so small?
  
  (I realize that you could put oversized motors on a small drone but I am asking about motors that would be proportionally normal)
upvoted_answer: Theoretically, I don’t see why we couldn’t make current motors even smaller than they are today - we already have brushless motors with stators less than 10mm across (for example these 0802 motors), and we could change the format by using inrunner motors instead. However there are certain factors that we need to consider.
  
  The first of these is that we can’t just have the motors - we also need the ESC boards. This is either done with a 4-in-1 ESC or 4 individual ESCs. This adds complexity, weight, size and heat buildup.
  
  We must also consider whether or not these negatives outweigh the positives. This is up to personal opinion, and in some instances it may well be worth it, however with miniaturisation comes increases manufacturing complexity with smaller tolerances.
  
  These are all important factors to consider: is it possible and is it worth it.
  
  I believe it is possible, however finding enough demand may be a limiting factor.