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  #21  
Old 03-05-2015, 02:21 PM
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Lynnb Lynnb is offline
 
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Location: Cedar Hill, TX
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Quote:
Originally Posted by rocketman1988 View Post
I think each application is going to be different depending on the system being used and personal preference. In my case, I am using the EFII fuel injection and ignition, so for the fuel system I used:

EFII double electric fuel pumps mounted in the tunnel

Two EFII pre filters mounted one under each seat

Andair duplex fuel selector valve and extension

EFII Pressure Regulator...mounted on firewall

Two 1/4" NPT aluminum flanges, one for each tank return

Closed end blind rivets for flange installation

Firewall bulkhead fitting

Tunnel bulkhead fittings

Fuselage bulkhead fittings

B Nuts and sleeves

5052 aluminum tube for lines

Adel clamps

And a substantial amount of time to fabricate the lines

If I did it again, I would probably just get Tom at TS Flightlines to make all the lines.
Thanks, right now my biggest concern is the fittings for the return lines to the tanks, I'll make other decisions a little later. I just didn't want to get the fuel tanks closed up and then find out there was something I missed. That's one of the frustrating things about this project is I almost feel like I need to have it all planned out from start to finish, just when I think I'm sailing along, bam have you thought about X. Owell, one rivet at a time.

Thanks,
Lynn
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  #22  
Old 03-12-2015, 11:00 AM
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majuro15 majuro15 is offline
 
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FYI, the VA-141 fuel pick up flanges are threaded such that they have be mounted from the inside of the tank. They will only fit through the sender hole with a bit of grinding and then you have to find a way to hold them in place with proseal while you rivet them. I found the standard AN bulkhead union to be easier. I'll post pics soon.
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  #23  
Old 03-12-2015, 11:49 AM
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Lynnb Lynnb is offline
 
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Quote:
Originally Posted by majuro15 View Post
FYI, the VA-141 fuel pick up flanges are threaded such that they have be mounted from the inside of the tank. They will only fit through the sender hole with a bit of grinding and then you have to find a way to hold them in place with proseal while you rivet them. I found the standard AN bulkhead union to be easier. I'll post pics soon.
Pictures would be great, my tanks are still open so all options are on the table right now.

Lynn
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  #24  
Old 03-16-2015, 09:17 PM
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Bluelabel Bluelabel is offline
 
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Location: San Diego, Ca
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Default Our Fix

So, we debated about the best way to fix this on our tanks. Taking the tanks off, going through the back baffle, attempting to do what Tim did and go through the fuel level sender hole. In the end, we decided to make a nice clean hole where it could be serviced if need be. Moved the return port, used sealed blind rivets, sealed the HECK out of everything and are about to retest for air tightness.
Hopefully this will be the end of it. it isn't super pretty, but no one will see it... except here....
Lesson Learned.





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  #25  
Old 03-20-2015, 08:25 AM
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johngoodman johngoodman is offline
 
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I drilled a hole high, and forward, with the same cautionary vacuum and grease method. Then, I snaked a long piece of wire through the hole and out the fuel sender hole. I put all the "inside" fittings on the wire, and pulled them into the hole (already prosealed). A washer on the wire pulled the fittings in place. Attached the "outside" fittings, and waited for the proseal to dry. Pulled the wire & washer back out the fuel sender hole, and closed it up.
John
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  #26  
Old 03-20-2015, 07:02 PM
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majuro15 majuro15 is offline
 
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I was able to do the final test on my tanks tonight after finishing my modifications. Here's a picture of the right tank. The return line is the fitting closest to the leading edge. I also replaced the phillips head screws with socket head cap screws.
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  #27  
Old 01-24-2016, 07:12 PM
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ERushing ERushing is offline
 
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Location: Underwood, WA
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Default Tim - Quick Question

Resurrecting this old thread.

Tim - What fitting did you use for your return line? I'm planning to blatantly plagiarize your work!

Thanks!
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  #28  
Old 01-24-2016, 09:05 PM
stamper stamper is offline
 
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For anyone interested I just took my senders out 2 days ago because the guy I bought the 1o from had return lines put right in the sender unit itself. I do not need the return lines so I ordered new senders and will be installing them Monday and then putting my wings on.
I think the way he did would work fine but it was interesting how he did it right in the face of the sender itself.
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  #29  
Old 01-24-2016, 10:39 PM
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digidocs digidocs is offline
 
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Stamper,

That's very clever. If you have an opportunity to take a photo of sender return setup, I'd love to see it.

Take care,
David
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  #30  
Old 07-06-2016, 05:41 AM
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rdamazio rdamazio is offline
 
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Quote:
Originally Posted by digidocs View Post
digidocs, what's the flange you used here?

Thanks!
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