Fuel Lines

Time 1.25hrs

Today I received most of the parts I ordered from Summit Racing. I did a rough install of the fuel lines that run between the fuel select valve (which I don’t have yet) and the wing tanks. The Fragola 8600 hose is very easy to work with. It doesn’t hold the coiled up shape so you’re not fighting to keep it straight and it seems to bend nicely around corners. I was a bit worried about putting the ends on because in the reviews people had said it was near impossible to get the ends on all the way so I tried putting one end on just to see. I heated the hose end with the heat gun set at 200 degrees and used a little spit on the fitting end (not as gross as it sounds… well maybe a little) and the fitting went on very well. The last 1/8″ was a little tough but still not as bad as I thought it might be.

I also put the 1/8″ NPT to -4AN fittings on the brake caliper and did a check on how the braided brake lines need to fit onto the gear. I don’t want to use tie wraps to hold the brake line in place on the gear so I’m thinking I can use a router to deepen the cut out in the back of the gear and then use some RTV to keep the line in place.


Box of fun arrived


-6AN fitting on the Fragola 8600 hose. I need the buy the tool to crimp the clamp, but I really don’t want to install the hose ends until I have the fuel select valve and I know exactly how long they need to be.

Hose routes down along the front of the main spar and out the hole in the side of the fuselage. The feeder hoses that run from the tank to the fuel select valve are -6AN while the return lines are -4AN (6mm). Also fuel filters get installed on each feeder line so I need to buy those as well.


The brake line and fuel feeder hose outside the fuselage. Hopefully will get the return lines in a few days. The grommet on the brake line isn’t installed. I think I’ll try to find a bit smaller OD grommet. I also need to figure out the wiring that needs to be run out to each wing. Both sides get similar wiring, but the right side (I believe) gets a few extra for pilot heat.


-4AN fitting on the caliper.

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