Maximum Air Thurst From a Simple Turbine/Blower

..... "Based on what we have seen, you ought to have a better appreciation for why it is preferable to compare jet engines in terms of thrust rather than power and propeller-driven engines in terms of power rather than thrust. While the opposite can be done, the process of converting between power and thrust requires us to know or assume additional information that is usually difficult or awkward to estimate."

http://www.aerospaceweb.org/question/propulsion/q0195.shtml

It sounds as though the original poster needs to carry out some experimentation on 1hp-rated leaf blowers in order to find out....

Mine is about 1hp, and produces about 1-2 lb, I'd estimate.

Many thanks-thats all I need to know at present as I was hoping it woud be much more and ure reply tells me that my project would be a no go before I even start.