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Dan, Thanks for that rule of thumb. I'd never heard that rule before. Tim also found that Cessna C-150 POH and the cruise table. Here's a link he sent me online: http://www.kcnaeroclub.org/GetForms/Cessna150Manual.pdf Scroll down to the cruise table near the bottom. It clearly shows that slowing down can get you great range, even at lower altitudes. The advantage of high altitudes is that you get the same range at a much higher speed - 'mushing along fast' like it says in Stick and Rudder. (Be aware, that to get fuel efficiency, you need to plan your descent and do a good cruise descent to get back the energy you pumped into the plane on the way up.) I sure broke the rule of thumb a lot by climbing high for shorter trips. That's related to my fundamental motion sickness. Though motion sickness is mostly cured by flying, those bumpy, thermally days still make me want to climb up to the smooth layer. It'll be interesting to see how that plays out when I get my Challenger flying. With half the wing loading of a Coupe it'll get bounced around much worse. But if the thermals are good enough, I can shut off the engine and soar! Still, it'll be more likely I'll fly the Challenger low than ever in my Coupe. Even so, I bet I spend more time up in the smooth, cool, high air than any other Challenger. Ed Burkhead http://edburkhead.com/ ed -at- edburkheadQQQ.com (change -at- and remove the QQQ) ========================================================================== ==== To leave this forum go to: http://ercoupers.com/lists.htm Search the archives on http://escribe.com/aviation/coupers/
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