I was just perusing the Kitfox site and once again I saw the claim of 160mph cruise at 16,000ft with the 914
What's the highest you guys have actually been and what was your TAS?
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I was just perusing the Kitfox site and once again I saw the claim of 160mph cruise at 16,000ft with the 914
What's the highest you guys have actually been and what was your TAS?
I was indicating 130 at 11.5 once. My GPS showed 170 ground speed, but that was the huge tailwind. I never figured the "true" airspeed. Honestly I was freezing my @$&!s off wearing shorts and a t-shirt at the time. But the tailwind was too big to pass up!
Been to 12.5 myself, everything seems to slow down a bit at those altitudes, kind of nice.
I think once I made it over 1000 ft. :rolleyes:
A few years ago I got my Model IV up to 14.5, and still had 200-300 fpm climb. I don't remember the airspeed, but I was solo, less than half tank of gas, the engine was 100 SMOH, and it was a cool spring morning.
I had mine to right at 12000. I had posted a photo of the Advanced Flight System showing 11500, but I can't find the photo.
Haven't been over 10,000 but had to do a rate of climb test for the test program.
for interest, here are the results - I wouldn't claim my timing and my holding exactly to 65kts to be all that accurate, but it gives you the general idea!
cheers
ross
Climb Performance to 10,00ft @ 65kts
ALT Time Time interval/1000ft ROC/1000ft
1000ft Mt Beauty Airport 0
2000ft 875fpm
3000ft 750fpm
4000ft 847fpm
5000ft 826fpm
6000ft 689fpm
7000ft 584fpm
8000ft 548fpm
9000ft 523fpm
10000ft 13m15sec 485fpm
I'v been to 8000 feet with 52 horse power.
Ross, I suspect the altitude in your table are from the altimiter and not corrected for density altitude? Here's your climb points on the graph I made during phase one flight testing. Classic 4 at 760 pounds gross weight and 52 horse power Rotax 503.