I added that quote to my earlier post to clarify what I was referring to with regard to ic-engine↔e-motor equivalencies being too restrictive.

Lucien does all the testing himself, he knows his business, you can take his motor-prop numbers to the bank

And there are also (garbage in, garbage out)
e-flight calculators (compilation) - RCG
E.g. eCalc, DriveCalc, ScorpionCalc c.s., MotoCalc.

Plane type and mass are leading when selecting power (in watt). Hence these rules of thumb for electric power:
Magic numbers for e-flight - WFF

Note that Kv (in rpm/volt) says absolutely nothing about motor max.power, max.current, torque, efficiency.
Kv only depends on desired rpm and battery voltage. It does effect current and power drawn greatly though, both are proportional to Kv cubed.

More

• Gibbs Guides
  → Articles
  → How to choose an electric power system
• The Ampeer
  → E-book: Everything you wanted to know about electric powered flight
  → Chapter Sizing Power Systems for Electric Airplanes
• How to choose a power system - RCG
• Beginners Guide to Motor and Prop Selection - RCG
• System power - RCG, several messages
• Several design papers
  rcaeronotes.wordpress.com/design-and-analysis-notes

Prettig weekend Ron
• Without a watt-meter you are in the dark ... until something starts to glow •
• e-flight calculators • watt-meters • diy motor tips&tricks • Cumulus MFC •