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MPPalmer(at)aol.com
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 Posted: Fri Jul 11, 2008 5:21 pm Post subject: Data points to wing leak |
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After my last post, I thought about this a little more.
If I've lost 4 gallons of fuel in 48 hours, that's a leak of 0.08 GPH. In other words, a drip.
So it's seeming that I have a wing leak somewhere, as someone suggested before. I suppose at this slow rate, it might be hard to smell given the rate of evaporation in a hot Phoenix hangar.
I'll plan to pull the inspection panels and hope something obvious (and easy) shows up.
Anyone know (like Bruce) where fuel leaks tend to occur most frequently? I'm guessing more in the middle of the tank, where pressures are highest.
Thanks,
Mike Palmer <><
**************
Get the scoop on last night's hottest shows and the live music scene in your area - Check out TourTracker.com!
(http://www.tourtracker.com?NCID=aolmus00050000000112) [quote][b]
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jbr79r(at)yahoo.com
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| Posted: Fri Jul 11, 2008 6:04 pm Post subject: Data points to wing leak |
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Mike
With a fuel leak like that you would see the blue dye stain even without any apparent fuel. I have had a few occasions where my quick drains didn't seal and I see a blue spot on the floor. That would also be the same for a leak across the spar cap or at the main spar attach bolts. The blue dye in the fuel stains everything.
Jim Robinson
Glll N79R
--- On Fri, 7/11/08, MPPalmer(at)aol.com <MPPalmer(at)aol.com> wrote:
[quote]From: MPPalmer(at)aol.com <MPPalmer(at)aol.com>
Subject: Data points to wing leak
To: glasair-list(at)matronics.com
Date: Friday, July 11, 2008, 7:18 PM
After my last post, I thought about this a little more.
If I've lost 4 gallons of fuel in 48 hours, that's a leak of 0.08 GPH. In other words, a drip.
So it's seeming that I have a wing leak somewhere, as someone suggested before. I suppose at this slow rate, it might be hard to smell given the rate of evaporation in a hot Phoenix hangar.
I'll plan to pull the inspection panels and hope something obvious (and easy) shows up.
Anyone know (like Bruce) where fuel leaks tend to occur most frequently? I'm guessing more in the middle of the tank, where pressures are highest.
Thanks,
Mike Palmer <><
**************
Get the scoop on last night's hottest shows and the live music scene in your area - Check out TourTracker.com!
(http://www.tourtracker.com?NCID=aolmus00050000000112) [quote][b]
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Bruce(at)glasair.org
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| Posted: Fri Jul 11, 2008 6:56 pm Post subject: Data points to wing leak |
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I'd check your sump drains first. The O rings do wear.
Bruce
www.Glasair.org
<?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" />
[quote]
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robin02(at)mindspring.com
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| Posted: Fri Jul 11, 2008 8:41 pm Post subject: Data points to wing leak |
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I'll plan to pull the inspection panels and hope something obvious (and easy) shows up.
Anyone know (like Bruce) where fuel leaks tend to occur most frequently? I'm guessing more in the middle of the tank, where pressures are highest.
Thanks,
Mike Palmer <><
Mike, the forward attach brackets for the wing are through bolted to the spar. Early builders had a problem of seepage around the bolts and a fix was added to the manuals but, at #36 to fly, I don't know what the fix is. You might check under the seat pans for stains but you would have noticed the odor if a is stain there.....this leads me to think there may be a siphon due to low pressure under the wing fairing and fuel is being pulled from around the attach bracket outside the cockpit. It is a long shot but worth a look; first at the top of the brackets and then under the fairings. Godspeed, Robin [quote][b]
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John Bolding
Joined: 23 May 2006
Posts: 281
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| Posted: Sat Jul 12, 2008 1:39 am Post subject: Data points to wing leak |
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Mike, Robin
The fix is to pack mill fiber around the bolt heads then a couple layers of cloth over the whole assy. Easy to say but you gotta be inside the tank to do it. John
[quote] ---
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