Yoav,

Forgive me please if I am telling you something you already understand, but it seems to me you may not understand what kv or rpm/volt and power ratings on electric motors mean.



1) KV means the more voltage you put on your motor the faster it will spin and the more power it will draw if the prop is the same.

2) The power rating of 550 watts does NOT mean the motor stops at 550 watts. It means YOU must use a battery and prop that will NOT exceed 550 watts.

3) The motor WILL give you MORE THAN 550 watts if you use 4s and a 13 inch propeller.
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4) The motor is designed for 3s and is limited to 550 watts by YOU. YOU can make it go over 550 watts, but it might burn up.

5) Your logic on voltage is correct, but I think to do what you want you need a 4s setup not a 3s pushed to 4s.

6) Higher voltage systems are more efficient than lower voltage setups for the reasons you are describing. That is why electric pattern setups use 10s which is the maximum voltage allowed by rules.


Perhaps I am stating the obvious and if so I ask your forgiveness again.



JP