05-06-2013, 12:26 PM
Ron, I agree with your conclusion of not a big difference, but I'm 
with your physics. Are you using kinetic energy or how are you coming up with that simplification? Besides that doesn't work when you use pounds of thrust (force) like an electric motor is rated, versus power. Especially when you get into all of the units that have to be converted correctly. If I wasn't so lazy I'd try working the physics to relate the two numbers, but I think your bottom line is all he really wanted, which I believe is accurate. 20% isn't a big difference, if your previous top speed was 3 mph your new top speed would be 3.6 mph. Assuming all other factors are constant. Sorry had a flashback TMI I'll go back to sleep. Later J
[signature]
with your physics. Are you using kinetic energy or how are you coming up with that simplification? Besides that doesn't work when you use pounds of thrust (force) like an electric motor is rated, versus power. Especially when you get into all of the units that have to be converted correctly. If I wasn't so lazy I'd try working the physics to relate the two numbers, but I think your bottom line is all he really wanted, which I believe is accurate. 20% isn't a big difference, if your previous top speed was 3 mph your new top speed would be 3.6 mph. Assuming all other factors are constant. Sorry had a flashback TMI I'll go back to sleep. Later J[signature]