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1. 07:45 AM - Re: polyethylene tanks and fuel ports (used to be in-line filters) (FLYaDIVE)
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| Subject: | Re: polyethylene tanks and fuel ports (used to be |
in-line filters)
Sacha:
Why go through all that headache.
Come off the fuel tank at the lowest point in the delivery system.
Install two items; a T fitting with a sump drain and just before it an
inline clear or translucent fuel filter. One on EACH tank, if you have two
tanks.
This way you now have a water drain at the lowest point in the system AND
you have a simple replaceable fuel filter. MUCH, Much better than just a
screen.
If you can replace the filters Annually at Inspection time.
Simple, easy, and very effective.
The rule you must follow is: The filter as well as your fuel lines must be
able to feed fuel at 3 times the full flow rate of your engine. GPH/GPM.
And of course that means a larger surface / filtering area than the screen
will ever be.
Barry
On Sun, Jul 20, 2014 at 6:49 PM, Sacha <uuccio@gmail.com> wrote:
> Hi Guy, thank for your feedback yeah, those are scary thoughts.
I did
> mean to add =9Cand then glass them over=9D to my original pos
t in fact.
>
>
> But it turns out my wing tanks are not made of resin after all; a friend
> who is more knowledgeable than me in these matters told me they look like
> they are polyethylene, or maybe a kind of nylon, like the Kitfox header
> tank. So gluing will be difficult and I=99m not sure glassing the
m will
> work either: it looks like I will not be able to fit finger strainers (or
> fuel drain valves) to either wing tank as I can=99t find a viable w
ay to
> attach the fuel ports/aluminum flanges to the tank walls. (As they need
to
> be close to the trailing edge of the wing, it=99s not feasible to f
it a
> counter-nut on the inside of the tank either).
>
>
> Instead of finger strainers on each wing, I=99m thinking of fitting
a single
> finger strainer to the header tank. It looks like this can be done witho
ut
> too much difficulty if I can tin-solder some brass mesh to the fuel port
> (the finger strainers they sell at ACS seem to be made that way
in fact
> I=99m having trouble finding brass mesh so I may have to cut some f
rom one of
> the ACS strainers).
>
>
> sacha
>
>
> *From:* owner-rotaxengines-list-server@matronics.com [mailto:
> owner-rotaxengines-list-server@matronics.com] *On Behalf Of *Guy Buchanan
> *Sent:* Sunday, 20 July, 2014 07:07
> *To:* rotaxengines-list@matronics.com
> *Subject:* Re: RotaxEngines-List: in-line fuel filters - can you
> recommend any?
>
>
> Sorry for the late reply, Sacha, I've been out of town.
>
> That might work. You must be very careful to sand, clean, then use
> something like MetalPrep
> <http://www.aircraftspruce.com/catalog/cspages/metalprep.php?clickkey=9
9083>,
> then Alodine, to prep the surface of the aluminum so you get a really goo
d
> bond. It will seriously ruin your day to have this flange pop off with th
e
> finger strainer in place, thereby letting the entire tank of fuel drain
> into your wing. >:o (Meaning: I would never do it, unless I glassed over
> it after bonding it.)
>
> Guy Buchanan
> Ramona, CA
> Kitfox IV-1200 / 912-S / Warp 3cs / 500 hrs. and grounded
> Now a glider pilot, too.
>
>
> On 7/16/2014 8:50 PM, Sacha wrote:
>
> What do you think of the idea of gluing aluminum welding flanges to the
> outside of the tank using two-part epoxy resin/glue or some other adhesiv
e.
> Would it work?
>
>
> Once the flanges are glued i could drill holes in the tank and then scre
w
> the finger strainers/fuel drains in place.
>
> The flange for the fuel port could be cut so that it can sit lower down.
>
>
> http://www.matronics.com/Navigator?RotaxEngines-List
>
> http://forums.matronics.com - List Contribution Web generous =EF
=BD -Matt Dralle, List href="http://www.matroni
cs.com/contribution">http://www.matronics.com/c
>
>
> *
>
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>
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