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Fuel line firewall fittings
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I used steel.
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I used steel for all of the fuel line connections fwf.
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As a follow up question: if you used these, either alum or steel, what washers did you use? I didn't see any washers listed on AircraftSpruce with the fittings, and I don't really want to use cheap Home Depot washers.
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AN960 washers
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Thanks largely to your "foot stomping" of this issue Dan, I have spent considerable time scraping the foil and foam insulation off my Rocket (applied by the builder, not me). I also did a burn test on the remnants and WOW! what an eye opener! Not only did it burn readily, but it produced enough acrid smoke that I almost passed out watching it burn in the yard. Even without fire, I would almost certainly been overcome immediately in an enclosed cabin. |
I know some will say no need and that I unnecessarily added weight but I made my doubler out of stainless. I don't want the aluminum spacers melting and the fitting becoming loose. I also plan the run stainless tubing back to the fuel filter.
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Here's the requirement for certified airplanes:
"23.1183 Lines, fittings, and components. (a) Except as provided in paragraph (b) of this section, each component, line, and fitting carrying flammable fluids, gas, or air in any area subject to engine fire conditions must be at least fire resistant...." There's considerably more to it than this excerpt. Dave |
Flame Retardant per FAR 25.853a Appendix F, Pt1
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