REFLECTOR: fuel line

[Scott Derrick]

I recommend solid aluminum tubing from the tanks through the sump
through the auxilary  fuel pump to the cabin side of  the  firewall. 
Its clean, light and inexpensive, if you cut, bend and flare your own
tubing.  Embed blocks of aluminum with female 1/8 or 1/4 inch pipe
threads onto the sump.  At the fire wall put in a  bulkhead fitting,
solid aluminum connects on the cabin side,  fuel resistant flexible
stainless braided coved with firesleeve over that  connects on the
engine side.

This is how it is done in hundreds of thousands of certified airplanes,
comercial airplanes, military airplanes, space shuttles, etc..  Its done
this way because its the safest and lightest.  You only need the armored
flexible line in the engine compartment, where it will be flexing and
subject to high heat and possible abrasion.

Scott

gattenby at tulsaconnect.com wrote:
> In an atempt to change the subject...
> I've got questions about fuel line.
> The 2000 vintage instructions show alum tube out of the strake
> changing to hose near the sump.
> I've seen planes that run the alum tube all the way to the sump.
> I know of guys that have run Aeroquip 601 from the strake to the sump.
>  
> At $25 a piece the Aeroquip fittings are pretty steep.
> Is it worth it to not have to bend the tubing / flair ect?
>  
> Splicing in the tubing looks like the easy way to do it.
> Any problems with the splice?
> How is the best way to do the splice?
> I know there are tools to put that funny little bulge on the end of
> the tubing, I don't have one...
>  
> Is there a potental problem with alum tubing all the way?
> Would vibration be a prob?
> Is there a fundamental design reason for splicing the tube to hose?
>  
>  
> I'm leaning toward all alum tubing...(based solely on looks)  But I
> don't like making changes to the kit when I don't fully understand the
> reasoning for the way it is.
>  
> Anyone have fuel line problems either way?
>  
>  
> Noel
>  
>  
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