| Danny,
I think the spread is a bit higher than that. ....but even without any fuel savings I would argue the course is still worth it. In general, I would say that people that take this course will have longer, not shorter TBO, will be able to more quickly diagnose engine problems while airborne, and will be less likely to abuse their engines.
e.g. if you save swapping a jug during your engine's lifetime you will have paid for the course. On Aug 21, 2011, at 2:09 PM, Danny Miller wrote: I’m not convinced of the ROI for spending $995 on this course in my particular case. As an example, for my LNC2 with an IO-360, if I burn 9 gph running ROP and 8.5 gph running LOP (best case scenario), how long does it take to recover the expense? To keep it simple, let’s say I spend $6/gal. So, that’s $995 x gal/$6 / 0.5gph = 331.7 hrs, or about 3 years of flying. So, the question becomes, is it worth all the hub bub? Again, for me, I think not. For you guys with the high burn rates, maybe so. But what is your actual hourly saving and is it worth the additional stress on your engines for the potentially much lower TBO? You decide and your mileage may vary. Danny Miller N 38° 43' 25.7" W 77° 30' 38.6" From: Steve Colwell [mailto:mcmess1919@yahoo.com]
Sent: Thursday, August 18, 2011 12:40 PM
To: lml@lancaironline.net
Subject: How do I run lean of peak? Claudette and I attended the Advanced Pilot Course a couple of years ago. Of the 50 or so attendees, (and there were skeptics,) I don’t think anyone left without agreement their procedures are the best way to operate an engine. The presentation is easy to follow with complete explanation of what is happening and why. Any remaining questions are answered and everything is documented. The cost of the course should be easily amortized by fuel savings and reduced maintenance. They even provide very comfortable swivel chairs. Steve Colwell Legacy IO-550
Subject: [LML] How do I run lean of peak?
If you operate your engine ROP at high power settings you have a much greater chance of damaging your engine than by anything you might do LOP. The next Live APS class is October 7-9.
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