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#1
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Take it up to 10,000'. Push the throttle and prop full forward. Lean to
maximum rpm. Note your EGT. Now, for ALL operations, lean to that EGT (or as high an EGT as you can get). You will be running rich of peak. Quite a bit rich at high power settings, to running at peak at the power setting at 10,000'. This is usually about 1350 F on the EGT. |
#2
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Doug,
Now, for ALL operations, lean to that EGT Why? This is usually about 1350 F on the EGT. Why is that number relevant? -- Thomas Borchert (EDDH) |
#3
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![]() Doug wrote: Take it up to 10,000'. Push the throttle and prop full forward. Lean to maximum rpm. No good. He has constant speed props. The rpm won't change until he pulls the mixture control all the way out. |
#4
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Works on my plane (a Husky with Constant Speed prop). The idea is that
at 10,000' you can lean all you want and it won't hurt anything, at full power for that altitude. Now, you will be rich of peak, just a little rich at 8000' full power, and so on down to Sealevel where you will be 150 or so rich of peak. Works great. You are leaned enough to be rich of peak and you don't even have to go to peak, at Sealevel (which can cause detonation), to find out where peak is. You will be leaned enough rich of peak to be safe, but not so rich as to waste fuel. |
#5
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![]() Doug wrote: Works on my plane (a Husky with Constant Speed prop). If you can change your engine speed with the mixture then you have a governor problem. |
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