Geico266
Well Known Member
I have an 0-235-C1 on my -3. It is a whopping 108 HP @ 2,700 RPM. Red line is 2,800 RPM. Currently, I have a 68x66 wooden Sterba "cruise" prop. The "problem" is I think the prop is just a tad too much for this set up and I'm torn on what to do and I'm asking for your advice and guidance.
Sterba 68X66
Static RPM = 2,120 RPM
Take off = 2,150 RPM - 400-600 FPM climb
Max level = 2,620 (on a good day)
Max Speed is 157MPH @ 4.5 gallons per hours.
Tach is accurate. Mission of plane = Daily flyer, aerobatics, short flights around the area, short cross countries under 500 miles.
Ed Sterba says he can repitch this prop for $50 plus shipping. I am leaning towards letting him do it and taking off 4" of pitch, but I'm stuck on what to do. My calculations are I would be able to spin the prop 100-150 RPM faster getting closer to red line and 108HP and loose no speed. I could cut it down 2" also. This would help on RPM also.
My goal is to improve climb on take off, without hurting top speed. I have the old style wheel pants and I'll be changing them to the new style this winter. This would add 6 MPH.
Any thoughts from VAF crew?
Sterba 68X66
Static RPM = 2,120 RPM
Take off = 2,150 RPM - 400-600 FPM climb
Max level = 2,620 (on a good day)
Max Speed is 157MPH @ 4.5 gallons per hours.
Tach is accurate. Mission of plane = Daily flyer, aerobatics, short flights around the area, short cross countries under 500 miles.
Ed Sterba says he can repitch this prop for $50 plus shipping. I am leaning towards letting him do it and taking off 4" of pitch, but I'm stuck on what to do. My calculations are I would be able to spin the prop 100-150 RPM faster getting closer to red line and 108HP and loose no speed. I could cut it down 2" also. This would help on RPM also.
My goal is to improve climb on take off, without hurting top speed. I have the old style wheel pants and I'll be changing them to the new style this winter. This would add 6 MPH.
Any thoughts from VAF crew?
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