It's always nice to get a package from Aircraft Spruce until you discover you've ordered the wrong part. So I thought I'd ask before I order again. What size AN912 bushing - thread reducer do I need to go between the 3/8 x 1/4 finger screen on the fuel tank to a AN816-5D Nipple for a 5/16" fuel line?
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When I was plumbing my LSA, I had almost all the fittings on hand for 3/8" lines. So I ran 3/8". I seem to remember calculating how much more weight the 3/8" lines would have, and it was about 2 ounces if I remember correctly. The bigger fittings themselves probably weigh more as well. But starting fresh I would certainly go with 5/16". Mark
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Thanks Al, I like that idea better - that's what I'm going to do. I didn't really like reducing down to 1/8 NPT. Looks like I'll have to order from both Wicks and Aircraft Spruce. Like you mentioned AS doesn't have the AN816-5-4D fittings and Wicks is out of stock of the AN912-2D.
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Wouldn't it be less expensive to run 3/8" tube (like Mark G did) than to replace all the fittings? Added bonus - you should have ZERO issues with meeting the fuel flow criteria...Jim Parker
Farmersville, TX (NE of Dallas)
RANS S-6ES (E-LSA) with Rotax 912ULS (100 HP)
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I am not sure how tight your tank is to a rib whether you have to turn coming out the tank or go straight. I believe the finger screen is 1/4" NPT. Fastenal have 2 simple options that would let you connect easily. Install a 1/4NPT to 5/16" barb that would allow a piece of hose to couple to the fittings to tube. We ran hose from the tank to the fuselage where it was slid over the tube.
It saves being creative with NPT to the 5/16" tube.
There likely is a Fastenal outlet near you somewhere.
Last edited by Glenn Patterson; 02-04-2018, 11:14 AM.
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