Actually, the 7148 and the 7150 props are the same length with only a difference in pitch. I don't know why the "wide"ness of the prop would make any difference to the width of the slipstream.
If the prop wash was more cone-shaped and wider at the wing/landing gear area on one prop, it would make me think: a. extra drag from the high speed air over the landing gear would cause extra drag and b. something is wrong for the slipstream to be so cone shaped with that prop. > > Hi Syd > Well the air within the propwash is always moving faster than the plane > since the plane has drag. Like when your doing a runup.. the wider the > propwash, the more of the plane is involved in the propwash. The only way > the whole plane is clean of the higher speed air is while gliding. So when > powered up the wider prop blew that higher speed air over a wider area of > the plane. And higher speed air creates more drag on the involved parts of > the plane. The 7150 only put the fusalage and tail in the propwash and my > gear etc were in clean cruise speed air. The wider prop 7148 placed my gear > in the porpwash. Since the propwash is faster air than what say the wingtips > are experiencing whatever is exposed to it has the increased drag from the > increased airspeed. Does that make any sense or am I drowning here?? (grin) > > Claude -- Ed Burkhead Peoria, Ill. N3802H
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