Brodhead Pietenpol Association

Original Posted By: steve(at)byu.edu
Hey gang,What size prop would give the the take and climb for myGrega Air Camper with a Continental A-80 engine? Presently flying with a metal 69-39 that gives a cruise of about 85 mph but poor take off and climb performance that is more important to me than cruise speed.Thanks for the input from the pros.MikeGN-1 121SPDallasMichael KingThe Comedy WireDallas, Texashttp://www.comedy-wire.com214-905-9299 Phone214-905-1438 Fax________________________________________________________________________________

Original Posted By: Michael King
-----Original Message-----Michael KingSent: Tuesday, May 19, 1998 1:53 PMSubject: Pietenpol-List: WOOD PROP SIZEHey gang,What size prop would give the the take and climb for myGrega Air Camper with a Continental A-80 engine?Presently flying with a metal 69-39 that gives a cruise ofabout 85 mph but poor take off and climb performancethat is more important to me than cruise speed.Thanks for the input from the pros.MikeGN-1 121SPMike,Not a pro on A-80's or wood props but, you may try and get the book "Carvingyour own Propeller" from EAA. In it there is a chart that might help youanswer your question. It charts torque, desired airspeed, length, planformetc. Seems that having your current prop repitched to a climb prop would beeasiest. A wood prop is going to weight less as well, and will figure intoyour W/B too.Good Luck,stevee________________________________________________________________________________