petehowell
Well Known Member
I just signed off the 3rd annual condition inspection on the -9A, and I thought I would re-run some cruise performance #'s to see if she has lost anything. Plus, a meeting was cancelled, and the weather was perfect!
I preflighted, took off, ran on up to 8500ft, and set up for cruise. I locked on the Trutrak and took some 4 way data on the cardinal headings.
22.2" MP, 2270 RPM, LOP 6.0-6.1 GPH, carb heat about 1/4 on.
Here is the data:
NTPS spreadsheet shows 151.6 KTAS with a small std dev. I was happy to find this is just a touch better than my Phase 1 test data. Over 28 smpg at 170+ mph, I guess I'll have to keep her......
Here is the APRS track, the big squares are the test runs:
I preflighted, took off, ran on up to 8500ft, and set up for cruise. I locked on the Trutrak and took some 4 way data on the cardinal headings.
22.2" MP, 2270 RPM, LOP 6.0-6.1 GPH, carb heat about 1/4 on.
Here is the data:
NTPS spreadsheet shows 151.6 KTAS with a small std dev. I was happy to find this is just a touch better than my Phase 1 test data. Over 28 smpg at 170+ mph, I guess I'll have to keep her......
Here is the APRS track, the big squares are the test runs:
![Location%20of%20KD0CVN-1%20-%20Google%20Maps%20APRS%20-%20Google%20Chrome%201152009%2064259%20PM.jpg](/proxy.php?image=http%3A%2F%2Flh5.ggpht.com%2F_kjRkTkBhhwk%2FSvNx1TLwEOI%2FAAAAAAAAJ2w%2FKgSE1XHB4CM%2Fs800%2FLocation%2520of%2520KD0CVN-1%2520-%2520Google%2520Maps%2520APRS%2520-%2520Google%2520Chrome%25201152009%252064259%2520PM.jpg&hash=1168741d3c343901b2830d0d3b881c62)