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#1
February 19th 04, 03:25 PM
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3 blade prop position on 6cyl engine.
Whats the best 3 blade prop position on a 6 Cyl Franklin?
The Ivo prop instructions only give an example for a 4 cyl IO-360 to place one blade on TDC position. That's where I placed it for the 6 cyl Franklin for now. ---------------------------------------------------- Paul Lee, SQ2000 canard project: www.abri.com/sq2000 
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#2
February 20th 04, 05:28 AM
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Then, on a 6 cyl, the other blades are properly positioned also--neat
ain't it.. Paul Lee wrote: Whats the best 3 blade prop position on a 6 Cyl Franklin? The Ivo prop instructions only give an example for a 4 cyl IO-360 to place one blade on TDC position. That's where I placed it for the 6 cyl Franklin for now. ---------------------------------------------------- Paul Lee, SQ2000 canard project: www.abri.com/sq2000
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#3
February 20th 04, 03:14 PM
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Thats interesting now that you mention it. 3 blade prop is exactly
symmetrical in power pulses on a 6 cylinder engine. Jerry Wass wrote in message ... Then, on a 6 cyl, the other blades are properly positioned also--neat ain't it.. Paul Lee wrote: Whats the best 3 blade prop position on a 6 Cyl Franklin? The Ivo prop instructions only give an example for a 4 cyl IO-360 to place one blade on TDC position. That's where I placed it for the 6 cyl Franklin for now. ---------------------------------------------------- Paul Lee, SQ2000 canard project: www.abri.com/sq2000
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#4
February 26th 04, 12:47 AM
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Some old guys are aware that rotating a three-blade prop 180 degrees
(so that one blade is straight up as opposed to straight down at #1 TDC or whatever) can make a difference. The IO-520 had a habit of throwing alternator belts, cured by rotating the prop. Changes resonant vibration modes somehow. Dan
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