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Main Fuel Tank - confirming a few things

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Jerry

Radial Skybolt Builder: 220.45% completed
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Here's are a few CAD's I drew for the Skybolt main fuel tank.

A few questions.

Since the fuel lines are coming out of the back of the upper, center wing tank I thought that it would be a good idea to have less fuel lines coming from the main tank... and just having it enter the main fuel tank in the back. Any issues with that?
fueltank_backview.jpg


Air vent line. Taking a look at Tony B's suggestion I have it coming out the back going to the top front. The upper fuel tank has it taking a 90 degree turn to the one side. Question: Should I have this going to the bottom at some point for any time I may go up-side-down? (see blue line on side view)
fueltank_topview.jpg
fueltank_sideview_2.jpg


Does anyone have a source for one of the longer fuel neck fillers? The standard fuel neck is pretty small. I have a lot of area between the tank and the top skin on the fuselage and would like to lengthen the fuel neck.

Thanks...
 

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