That was me in N28487…I fly (over 700 hours) all the time at FL210 to FL280. I’m LOP 14.7gph, 2300rpm, 31”MP and my cabin is 9500’ at FL270. I can climb LOP at 700fpm up to FL180 then 500fpm above…..my plane likes FL 210 to FL240. I’m thinking about getting a larger cold side turbo rebuild.
I’m interested in hearing what others have for turbos (stock or otherwise) and speed/economy.
From: pete@leapfrogventures.com [mailto:pete@leapfrogventures.com]
Sent: Friday, April 05, 2013 11:24 AM
To: lml@lancaironline.net
Subject: RE: [LML] FL270
I believe the service ceiling is FL280. I have had my ES-P up that high twice. While it was a slow climb above FL250, it was still well over 100 ft/min at FL280. You IV guys should have no problem getting that high. I think only RVSM limits you from going higher.
Pete
From: William A. Hogarty [mailto:billhogarty@gmail.com]
Sent: Thursday, April 04, 2013 7:50 PM
To: Lancair Mailing List
Subject: Re: [LML] FL270
Someone told me that the "service ceiling" is defined as point at which the aircraft, at full power, cannot maintain
Another someone mentioned that the IV-P was limited in altitude by engine parameters. If that is correct, then each
aircraft would probably vary in max altitude by builders skill and technique in building.
Finally, he who builds the lightest plane with the minimum accessary drag and the tightest cowling, might be the winner.
..........sounds like it might be an interesting competition.