Interesting read... So basically go with the bigger motor with lower Kv and gear it up...

Where can I get a Lehner 2240? I think he said the 2240 will work with the 9920 ESC, is that right?

But the 9920 will only do 24v. Can you recommend an ESC that can handle a 2240 and do higher voltage.. Just incase one day I want to go faster ;)