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bvthomas(at)bigpond.com
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 Posted: Tue May 18, 2010 12:13 am Post subject: fuel heedful heedful feed |
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Pappy,
This also happens in a common or garden Cessna 182, it just seems to adjust itself as you fly along, On landing dip the tanks and they will show more in the right tank, but leave it stand
With the valve at both, and they balance out, I don’t think it’s yaw as I fly it balanced on auto pilot. There was an article on the Cessna web page explaining it some time ago. C182s have one vent
On the left tank only with a cross over to the right tank, and I believe the cross over tube fills with fuel and prevents a balanced draw from both tanks.
Regards Bruce
[quote][b]
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cjpilot710(at)aol.com
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| Posted: Tue May 18, 2010 3:18 am Post subject: fuel heedful heedful feed |
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The placement of the vent could be a factor, however I understand from old T34 pilots, they correct imbalance feed by adjusting the rudder trim since they have cockpit control of rudder trim. Since my tanks have seperate vents, I don't believe its just a vent problem.
Autopilots may keep you wings level but they don't correct yaw. Now I;m not totally sure of the dynamics and physics involve here and how to explaine it, but its what I observe.
Sometime ago, one contributor here noted how he had eliminated uneven flow by modifying the flapper valves (i.e. grinding their seats so that the flapper it self had a small contact area for sealing.). The explanation at the time seemed to make sense. I plan to try it on my next "mod program".
The note about slots being cut in the flapper valve is interesting too. I believe its an easier modify the flapper valves than rebuilding the rudder and adding rudder trim.
Well its 4am here in SMX, and I need to try and get back to sleep. May need to fly the B-24 come daylight. Had a nice flight up from BUR yesterday. Took off on rwy 15 and climbed out over the Hollywood hills. Than dropped down to stay under the overcast sky. Passed the hills we turned west to the coast and followed it until we neared the Vanderburg area. We than turned inland skirting the restricted area there. Ran into some rain showers but was able to even see and fall in behind B-17 "909" for what appeared to be a perfect planned arrival.
Sorry guys I still having to much fun. Nite nite
Jim "Pappy" Goolsby
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