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Rob,
I don't have a photo of the individual pieces for the RANS tank fittings, but I ran down stairs and snapped a close-up photo of the installed fittings and I uploaded it to the 'Panos' folder. The fittings are exactly the right size for the holes you already have drilled for the factory Titan rubber inserts. They are threaded inside for 1/8"NPT, and on the outside for an AN aluminum nut with a hex down inside the 1/8" NPT to hold it with an allen wrench while you tighten the nut. You only need to be able to feed a piece of bailing wire through the hole where the fitting goes, and through the filler neck to slide the fitting inside so it runs down the wire and falls into place. If I recall, these fittings are only manufactured by RANS. They'll likely run about $12-16 per hole, but well worth it.
The stock Titan fuel pick-up/strainer clunk is quite heavy. The screens are soldered onto a 1/4" NPT bushing reducer with 1/8" NPT to screw your hose fitting into.
The 90-degree fitting is the filler vent that connects up by the filler neck. The center fitting is for fuel feed to the fuel pump, and the fitting opposite of the '90 is for the stock external vent out the bottom of the plane. That line gets looped up high in the rear before turning back down to exit the belly skin tube. That way, when you over-fill the tank a little, it isn't going to dump the entire volume that is in the filler neck out on the ground.
--Kimberly
----- Original Message -----
From: jrceacampo
To: Titanaircraft@
Sent: Monday, June 29, 2009 11:50 AM
Subject: [Titanaircraft] Re: Fuel Tank Problem
Kimberly;
Pictures speaks a thousand words! thanks. I'm replacing all fittings to AN aviation kind, I will only keep the top plate that has the cut out already in the tank and is in good condition. Would you have some pics of the two Rans drain fittings and the release valve in the belly?
Also, do you put a weight on that internal urethane hose and a mesh or just as is?
I see you have the 90 degree fuel pick up and then two other barbed fittings, are these for venting purposes or the external (below the wing) connectors?
Thank you,
Rob.
--- In Titanaircraft@
>
> Rob,
>
> Again, we've gone a little beyond what you usually see on most other aircraft. Please take a look at the last page of the 'Panos' photos folder. I just uploaded some photos of our latest tank sump/vent plate. As you can see, it has an internal plate inside the tank with counter-sunk riv-nuts. One of the riv-nuts is just to hold the plate in place while the gasket and plate are set on top and bolted down with the screws and teflon sealing washers. No other sealer is used, and it doesn't leak. However, I like to run a bead of silicone around the plate and the fuel level float plate just in case to keep vapors in check. Keep in mind, silicone will break down quickly if it is in constant contact with liquid gasoline.
>
> In case you were wondering about that large tube the re-connects at the filler neck, that is the fuel filler vent that keeps the fuel from spraying back out of the neck while fueling the plane, and it works very well. This of course is in addition to the 1/4" atmospheric vent, which you can see in the photo.
>
> We use the stock Titan fuel clunk inside the tank with the factory two-stage strainer soldered on.
>
> There is no sealer used on the Rans fittings to install them other than blue Loctite to keep the nut secure, but you do use teflon sealant for the 1/8" NPT fittings that screw into them. Be careful to not overtighten them as it will damage the O-rings if the fittings turn in the tank.
>
> We've found the toughest smelly fuel problem in a Tornado is the fitting that the drain sump that the valve screws into. Make sure you use a very good thread sealant on it as well as the aluminum belly skin since the threads in the valve really aren't pipe thread like the brass fitting it screws into. If that leaks, it leaks all the time, until the tank is empty.
>
> --Kimberly
>
>
>
>
> ----- Original Message -----
> From: jrceacampo
> To: Titanaircraft@
> Sent: Sunday, June 28, 2009 8:02 AM
> Subject: [Titanaircraft] Re: Fuel Tank Problem
>
>
>
>
>
> Thanks Kimberly;
> The Fuel I left seems to work, but still there are some areas that may require something stronger or found I way to scratch what seems to be glued at the bottom.
> Also, Do you use a weight or a mesh at the end of your blue urethane hose inside the tank?
> What do you use to seal back the fittings plus the aluminum base plate at the top of the tank?
> Thank you!
> Rob.
>
> --- In Titanaircraft@
> >
> > Rob,
> >
> > We use the blue urethane inside the tank and for the vents. We also use the RANS fuel tank fittings, which are aluminum with a captive surface O-ring, so they can't rot like the rubber inserts that Titan supplies. They are far superior, and are now the only fuel tank fitting we will use on plastic tanks. They require a 1/8"NPT male fitting on each one once installed to connect the hose to.
> >
> > --Kimberly
> >
> >
> >
> >
> > ----- Original Message -----
> > From: jrceacampo
> > To: Titanaircraft@
> > Sent: Friday, June 26, 2009 8:55 PM
> > Subject: [Titanaircraft] Fuel Tank Problem
> >
> >
> >
> >
> >
> > Hi all;
> >
> > I want to share and also ask about something that happened this evening. As I started checking all my fuel lines, preparing for my first fill up of the fuel tank for engine testing for the 1st time, with difficulty I was able to see some sort of a brown shush or corrosion at the bottom of the Plastic tank, I was suspicious and took the tank out.
> > All lines below for draining the tank, were cracking, full of crap inside (with part of that brown shushy and oily thing I saw at the bottom of the tank. I'm not sure what this is, all the fittings inside the tank are completely corroded (light blueish powder on them!). If I would have gone with the testing or taxiing, my lines would have been all clogged and the engine would have stopped. I'm happy to have done this inspection. I bought this plane 70-75% complete and I've continued with the project. Probably the previous owner left some water there that provoked this corrosion inside.
> >
> > So, is it possible to clean that stuff with a particular product? I currently left some gasoline inside to get that stuff diluted. Im going to change all the fittings. even the fuel probe might not work anymore.
> > Does Titan have all the necessary fittings for this fuel tank in a kit form? I think I'll have to take off the 2 draining fittings at the bottom as well, what compound should I use to seal everything back with new fittings? Do you guys use a urethane hose inside the tank?
> >
> > Your ideas are appreciated! thanks,
> >
> > Rob.
> >
> >
> >
> >
> >
> > [Non-text portions of this message have been removed]
> >
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> [Non-text portions of this message have been removed]
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