I Found this site very helpful in the calculations of a RC models weight to power ratio hope that you will also.

[MotorCycle-Man]

eCalc - the most reliable electric Motor Calculator on the Web for RC Pilots

 

[Deleted member 62848]

eCalc - the most reliable electric Motor Calculator on the Web for RC Pilots

Wow that's cool
I just had to sign up on the multirotor, was cheap,,,looks very informative,,now I just have to learn it,
Thanks for sharing