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PA-22 150 Propeller
What is the factory standard prop for a Tri-Pacer? Would a Sensenich M74DM with 61 inch pitch be a climb prop? What should the static max power rpm look like?
Thanks for your help!
Gary Knight
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Re: PA-22 150 Propeller
no, that is a cruise prop.
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Re: PA-22 150 Propeller
The 150 and 160 standard cruise prop is either a 60 or 61. The climb prop is a 58 pitch. Static RPM limits for all M74DM props on PA-22-150 is 2250 to 2480. With a 60 or 61 pitch expect around the 2250. With a 58 pitch it will likely be in the middle of that range. I ran a 53 pitch on a PA-22-160 for years, static was 2480 or maybe a little over, but cruise was only about 105 @ 2700 RPM.
Most people make the mistake of running these engines to slow, they like to be run hard. 75% on an O-320 is about 2500 rpm at 3000 and increases as altitude increases. Your airplane should cruise about 125 - 130 mph indicated at 75% with that prop depending on altitude. You can hold 75% power up to about 7000 with full throttle (or slightly less so the economize isnt open.
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Re: PA-22 150 Propeller
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