thrust is the amount of pull if you will - so you can get 14 pounds of "pull" starit up speed is jsut the maxium throreticle speed with a specific rpm and pitch, no thrust but alot of speed is usless because you cant get off the ground a plane that has tons of thrust but no speed is also useless if you cant get above stall speed, we never get somthign for nothing its a hand off.

I see you got a REALY answere to your question, we posted at the same time