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#1
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Continental IO-520A operating data?
Does anyone out there have power setting and fuel flow data for a
Continental IO-520A engine? These were installed on some 1970's era Bonanzas, and someone whose opinion I respect mentioned that the power setting and fuel flow data in the aircraft POH were based more on marketing requirements than sound operating practice - that is to say, they did not conform to Continental recommendations and were not good for the long term health of the engine. Obviously the aircraft manufacturer's recommendations are in the POH, but does anyone have a source of the engine manufacturer's recommendations, or, failing that, the recommendation of a manufacturer other than Beech that uses the engine? I would like to be able to compare the two. Michael |
#2
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Try www.tcmlink.com
And yes, there is a wave of opinion that fuel systems adjustments shold be on the rich side. Kent Felkins Tulsa "Michael" wrote in message om... Does anyone out there have power setting and fuel flow data for a Continental IO-520A engine? These were installed on some 1970's era Bonanzas, and someone whose opinion I respect mentioned that the power setting and fuel flow data in the aircraft POH were based more on marketing requirements than sound operating practice - that is to say, they did not conform to Continental recommendations and were not good for the long term health of the engine. Obviously the aircraft manufacturer's recommendations are in the POH, but does anyone have a source of the engine manufacturer's recommendations, or, failing that, the recommendation of a manufacturer other than Beech that uses the engine? I would like to be able to compare the two. Michael |
#3
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"Fly" wrote
Try www.tcmlink.com Thanks for that link. Good info to have, and I now have at least the full throttle fuel flow. Nothing there about power settings, though. And yes, there is a wave of opinion that fuel systems adjustments shold be on the rich side. Yes, that was the impression I got. Michael |
#4
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"Michael" wrote in message
om... Does anyone out there have power setting and fuel flow data for a Continental IO-520A engine? These were installed on some 1970's era Bonanzas, and someone whose opinion I respect mentioned that the power setting and fuel flow data in the aircraft POH were based more on marketing requirements than sound operating practice - that is to say, they did not conform to Continental recommendations and were not good for the long term health of the engine. That sounds like the old ROP/LOP thread that ran in here a while back. Is that the comparison you're looking for? The notion of POH setting being set by the marketing department sounds like John Deakin over at AVWeb. Matt --------------------- Matthew W. Barrow Site-Fill Homes, LLC. Montrose, CO |
#5
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"Michael" wrote in message om... Does anyone out there have power setting and fuel flow data for a Continental IO-520A engine? These were installed on some 1970's era Bonanzas, and someone whose opinion I respect mentioned that the power setting and fuel flow data in the aircraft POH were based more on marketing requirements than sound operating practice - that is to say, they did not conform to Continental recommendations and were not good for the long term health of the engine. Obviously the aircraft manufacturer's recommendations are in the POH, but does anyone have a source of the engine manufacturer's recommendations, or, failing that, the recommendation of a manufacturer other than Beech that uses the engine? I would like to be able to compare the two. Michael Well ours is a IO-520-L but I don't know how the suffixes work on those. It's in our 1978 C210M. I emailed it to you, and posted to alt.binaries.pictures.aviation. Hope it helps! Cheers, John Clonts Temple, Texas N7NZ |
#6
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"Matt Barrow" wrote
The notion of POH setting being set by the marketing department sounds like John Deakin over at AVWeb. Actually, most of what John Deakin writes over on AvWeb on the topic is totally unoriginal - and very correct. And you would be amazed how often it is marketing rather than engineering that writes operating manuals - in any industry. Michael |
#7
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"Matt Barrow" wrote in message
... That sounds like the old ROP/LOP thread that ran in here a while back. Has that ever gone away? :-) Paul |
#8
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I second that.
What John Deakin said can be basically summarised in two parts: 1. Anytime the power setting is above 75%, use full rich. Check the fuel flow and make sure it's rich enough for the engine and power output. 2. Anytime the power setting is below 75%, lean the mixture REGARDLESS OF THE ALTITUDE. The lower the power setting, the more aggressive the mixture should be leaned. On the ground, the mixture should be leaned to the point that the engine barely runs. For engine that has good mixture distribution on all cylinders, use LOP operation. I follow these rule of thumb and my engine couldn't be happier. John Deakin's article taught me that the decision of *whether to lean the mixture or not* has nothing to do with altitude, only with power setting. The only thing varies with desity altitude is how much mixture control you need to pull out to achieve a specific mixture setting. I wish they could teach this in primary training and we can all be spared from all the fouled plugs. (Michael) wrote in message . com... Actually, most of what John Deakin writes over on AvWeb on the topic is totally unoriginal - and very correct. And you would be amazed how often it is marketing rather than engineering that writes operating manuals - in any industry. Michael |
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