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Old 08-06-2017, 11:28 AM
Sig600 Sig600 is offline
Join Date: Nov 2005
Location: KRTS
Posts: 1,798

Originally Posted by DanH View Post
Trust by verify. Look at the numbers. At 2700 and full throttle, the horsepower difference between 125 ROP and 225 ROP is 291 vs 285. That's a 2% power reduction in return for a fuel consumption penalty of 14%. Now consider if 2% can make a significant difference in the long term health of a cylinder. Remember, this issue has nothing to do with cruise. The scary red box deals with climb power...overall, a short term use.

Long term wear data for red box observance in climb? In God we trust. All others are asked to bring supporting documents.

Again, this has nothing to do with LOP cruise.

Make of list of all the ways CHT can be reduced, then consider....why would anyone choose fuel? The answer is because all the more sensible choices are locked by certification.

We have experimental freedom, but often waste it on self-flagellation. You want to hear a definition of insane? It's a guy worrying about the red box, while step climbing a high performance airplane at reduced power and some ridiculous fuel burn to keep CHT down, behind a 540 with bumped compression, cold air induction, and an EI with advanced timing.
Agree, climbing like that is idiotic. MB would say the same.

It's evident you've never read any of MBs stuff (or talked to the guy in person, he's pretty prompt to answer email, maybe go yell at him in person) because you're arguing against points he's never made, which is making your posts completely incoherent. You sound like "1+1=purple!!!!!"

All the data is out there to support his principles of engine management. It's in every engineering and physics book I've ever owned for starters.
Next?, TBD

Last edited by Sig600 : 08-06-2017 at 11:49 AM.
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Old 08-06-2017, 11:34 PM
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DanH DanH is offline
Join Date: Oct 2005
Location: 08A
Posts: 7,659

Originally Posted by Sig600 View Post
It's evident you've never read any of MBs stuff ... because you're arguing against points he's never made...
Obviously I have, and in this case, posted the publication and month. This isn't a debate about Mike's overall value, or my reading.

Please examine the caption below his red fin illustration, and the text of the article. Perhaps you could explain why climbing an NA Lycoming at 85% and leaner than 225 ROP is "highly abusive", given it is necessary to obtain rated power?
Dan Horton
Barrett IO-390
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