What orientation for the fuel tank fittings?

[alexM]

Great responses everyone, thank you. After posting my question I found myself in the Final Assembly chapter where the fuel system where the images show the fuel tank elbow pointing straight back, but didn't see anything in the instructions about the orientation. Given the statement to make sure it is an uninterrupted downhill run to the header tank it seems like a a good idea to point it just a bit downward also.

The banjo fittings have appeal but an online search left me with more questions than ever. If Kitfox sells them that seems too easy. Unfortunately this week they seem slammed while trying to get ready for Oshkosh so I don't want to mess with my pending order.

Used the supplied fittings like Alex and Jim. It is critical to use the designated sealant. I also fabricated an access panel below the fitting to easily swing the fitting for removal and inspection. Flying since 2009 and no leaks.

Ah! Now I know why the bags of parts associated with fuel tank installation came with access panels. They made no sense to me why they'd be in there.

Edit: My paper manual for the series 7 says to use Permatex Tack & Seal 9AR. Is that what all of you have used, or is there something better?

[Dave S]

Alex,

There is some potential confusion on the permatex product as the company has changed the name and the Item #.

It is currently called "Tack & Seal Gasket Sealant" item # 80938; however, the tube has (9AR) in parenthesis below the current item number.

If you do a search on the list for "fuel elbow access" you can find some photos of what some list members have done to make access easier and certain other modifications they have make to the elbow to make inspection and maintenance easier for this little item. FWIW - The access panel I fabricated for the wing fabric below the elbow was not in the instructions - just one person's choice. In my photos I did not have one of the little plate (just the reinforcing on the fabric); but, it is held in place by two sheet metal screws.

You are making good progress.

[mike92104]

I haven't installed them yet, but I ordered these:

https://www.ebay.com/itm/361015704420

They were a recommendation from someone on the forum, but I can't remember who. They seem very well made, and should make installing the fitting a breeze.


Looks like ACS has something similar:

https://www.aircraftspruce.com/catal...ages/banjo.php