engines 28/lb-25hp

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Postby huronflyer » Tue Sep 09, 2008 8:41 pm

Tyler,

Is that 12" to 15" only good with JPXs?

Should work with 185s too, right.

drh
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Postby JPXman » Tue Sep 09, 2008 9:35 pm

negative

that is a rule of thumb for pretty much any generic airfoil based on a ratio of the centre of pressure and the centre of gravity. you could put turbines on a lazair, and as long as it was balanced between 12" and 15" it would fly normally (albeit vertically).

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Postby huronflyer » Wed Sep 10, 2008 5:58 pm

vertically up?

hum until wings depart...

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Postby yankeflyer » Wed Sep 10, 2008 10:28 pm

OK guys -- Winslow is forecasted to have high winds and thunderstorms and other various weather phenomenon throughout the week. So right now waiting on my in-line fuel shutoff valves to show up, and the starboard engine is still not 100%.

My run here at the giant man cave in Winslow Arizona, comes to an end November 1, not necessarily bad news as my next stop will be Flagstaff Arizona.

The other pilots and builders that keep track of the various projects at this web site, will appreciate my efforts and will understand if I wait for the optimum conditions to fly my 11 horsepower airplane.

It can't go without saying that my enthusiasm for the next level of power in my lazair is more and more focused on the electric option.

Though I couldn't resist latching onto these 185`s -- it just seems to be a never-ending cycle of trying to bring the 185 engines up-to-date.
The options for powering lazair `s grows as the para-plane industry evoles's.

In the meantime I got a whole bunch of other work to do.
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Postby JPXman » Thu Sep 11, 2008 1:08 am

what else do you need on a bus - a shitter, a good stack of books, some AC and a can of roach killer....good times
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Postby yankeflyer » Thu Sep 11, 2008 7:44 am

shower - no roaches - but lots of black widows
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Postby yankeflyer » Thu Sep 11, 2008 1:41 pm

And today here in Winslow Az the wind is zero. And it's been that way all day, so much for the forecast.
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Postby JPXman » Thu Sep 11, 2008 3:36 pm

keep tweaking that engine while you wait for other things then. track down those gremlins - no sense finding them at 100' and over non-landable terrain.
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Postby yankeflyer » Thu Sep 11, 2008 4:27 pm

over non-landable terrain....?

pioneers over mt st helens....!

I`ll be staying close to the airport..:)

ready to practice my emergency landing proceedures....:0
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Postby yankeflyer » Sat Sep 13, 2008 11:50 pm

start up and taxi to the trailer --

http://www.youtube.com/watch?v=Nz7OeUqeWsg

OK now that I've watched it two or three times, I feel I should add this -- the brakes worked perfect and as an example of the adjustability of them, when I stalled out coming up the ramp and had to back down the ramp, I release some of the tension at the caliper on the disk.

So the second time I added full power and picked my feet up -- there was plenty of power to take me right up and over the ramp and plenty of break to stop me once I got on top.

Engines are getting better and hopefully I'll have better cameras for the actual relaunch of this series one ultralight.
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