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jbhart(at)onlyinternet.ne
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 Posted: Sun Jun 21, 2009 12:11 pm Post subject: Father's Day Flight |
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Kolbers,
Had a very pleasant flight from Winchester 35 miles south to Connersville,
Indiana to Connersville Airport Father's Day event. Saw a few of the
Hargerstown, EAA Chapter members there. Some antiques, may be ten
experimentals, one life line helicopter, but mostly ga aircraft flew in.
The FireFly was the only ultralight vehicle. Lots of kids to look at the
FireFly and parents to encourage to let their kids learn to fly.
I have made some changes to the air fuel mixture control. I kept moving the
high pressure reference point around to try an find a stable source. But
things would happen that I could not figure out why they happened and so I
installed a positive dynamic pressure probe in the carburetor inlet. This
has proved to be a better pressure source in that as one retards the
throttle or opens the throttle the positive pressure follows the throttle
position. I was worried that may be the pressure could become too high and
run the engine so rich it would quit, but that has not been the case.
For what ever reason, and I have not completely rationalized what is going
on, but I can change throttle settings, and I do not have to readjust EGT.
Also, if I nose the FireFly down and unload the propeller, I do not see and
EGT increase. It is very stable.
Burned 1.81 gallons per hour, cruising at 50 to 55 mph gps and burned 2.61
gallons over 70 miles with two take off and landings for 26.8 gpm average
point to point.
Ready to start taking data on the air filter scoop.
I hope you had as good a Father's Day as I have had.
Jack B. Hart FF004
Winchester, IN
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etzimm(at)gmail.com
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| Posted: Sun Jun 21, 2009 6:01 pm Post subject: Father's Day Flight |
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On Jun 21, 2009, at 5:01 PM, Jack B. Hart wrote:
| Quote: | Burned 1.81 gallons per hour, cruising at 50 to 55 mph gps and
burned 2.61
gallons over 70 miles with two take off and landings for 26.8 gpm
average
point to point.
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Jack, Is that 26.8 gallon per minute, or gallon per mile? <grin>
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jbhart(at)onlyinternet.ne
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| Posted: Mon Jun 22, 2009 1:42 am Post subject: Father's Day Flight |
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At 09:59 PM 6/21/09 -0400, you wrote:
| Quote: |
Jack, Is that 26.8 gallon per minute, or gallon per mile? <grin>
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You got it figured out. I must have hit an inversion.
Jack B. Hart FF004
Winchester, IN
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