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Fuselage skin distortion at fuel filler

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grahamsingleton(at)btinte
Guest

Posted: Thu May 13, 2010 3:19 pm Post subject: Fuselage skin distortion at fuel filler

Bud

I see you used plastic tube for the breather. Makes me nervous remembering Harald Linke's refueling fire. I always use 3/8 versatube and ground it.

Fuel vapour and droplets running up an insulated tube might act like a Van der Graff generator and cause  a spark. My guess anyway.

Graham

From: Bud Yerly <budyerly(at)msn.com>

To: William McClellan <wilwood(at)earthlink.net>

Sent: Thursday, 13 May, 2010  18:19:04

Subject: Europa-List: Re: Fuselage skin distortion at fuel filler 



                                 [img]cid:1.4131645405(at)web87104.mail.ird.yahoo.com[/img][img]cid:2.4131645405(at)web87104.mail.ird.yahoo.com[/img] Photo E-mail       

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Procedure I use at Custom Flight:

  

 1.  Open the hole in the fuselage top to allow the boss from the  filler tube to pass through.

 2.  Align the fuel filler tube to  the fuselage side and  temporarily set it against the side of the aircraft, mark where the fuel tube  will set and check that the rubber fuel hose will fit and not be folded or  bent.

 3.  Cut a piece of scrap blue foam about 1/4 inch thick, and wider  than the fuel tube by about an inch.  Set the length from 1 inch  minimum below the fuel filler top hole, and stop near the bottom of the  flat part of the PTFE filler tube.

 4.  Affix the blue foam to the fuselage side with 5 minute floxed  epoxy on the top and bottom edge and floxed Aeropoxy for the  center.  Clamp as necessary.  Allow to cure.

 5.  When secure, chamfer the sides to a 45 and round the edges.   Spread entirely with micro slurry and two layers of glass, and peel ply.

 6.  Refit the tube, mark the top for the filler cap flush with the  outer fuselage and cut and install the filler cap.  Check fit.  Once  fit is acceptable, Redux the top area around the filler cap inside and out, and  affix with glass straps as described in the manual.  Peel ply as you will  be working around here later.

  

 7.  Once all is secure, attach the trimmed rubber fuel elbow and  clamp.

 8.  Use Pro Seal on just the top and bottom points of the rubber fuel  elbow if you are concerned about fuel leakage in the event of an overfill.   Keep in mind, the fuel tube will have to be cut off to remove it if using  Pro Seal (available at A/C Spruce.).

  

 9.  Attach fuel vent tubing as appropriate.

  

                   [url=http://photos.msn.com/Viewing/Album.aspx?PST=8nK2AN1B%211LEiKSdooxx9v4CFFiF2tnPWP2mfc7Vl*tK8zynHq0aFwS7xyuUUORT5dlN4XEFfQoS52BHh7nFQw%24%24][img]cid:3.4131645405(at)web87104.mail.ird.yahoo.com[/img][/url]

               



    

  

 Bud Yerly

 Custom Flight Creations

 US Dealer.

  

  

  

  

  

  

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budyerly(at)msn.com
Guest

Posted: Fri May 14, 2010 12:49 pm Post subject: Fuselage skin distortion at fuel filler

<?xml:namespace prefix="v" /><?xml:namespace prefix="o" /><![endif]-->  I prefer to ground my system through the fuel drains which I ground via  wire to the main grounding point to prevent that.  Static electricity in a  tube like that or during fueling where the fuel filling source and aircraft are  not grounded is dangerous.

  

 Anyway, I think your point has merit.

  

 Bud

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