Film Can Fuel Tank
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Film Can Fuel Tank
I recall seeing infromation about using a plastic 35mm film can for a small fuel tank. Can anyone point me to the instructions for this?
Thanks,
Thanks,
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RE: Film Can Fuel Tank
The Fuji cans snap shut pretty tightly, so it sould work fine. I used to put a little freon in them from canned air, snap the lid on and they would pop pretty loudly after a minute or two.
#7
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RE: Film Can Fuel Tank
I use to use these. I never sealed the container lid and didn't had a problem with leakage. Like the picture above, I used Fuji film because they used clear film containers. Kodak works fine if your putting the tank somewhere you can't see. I've used them also, and had no problems.
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RE: Film Can Fuel Tank
ORIGINAL: crossman
One question, do you glue the cap in place or is it tight enough to seal bay itself? I know the lock in place pretty tightly.
One question, do you glue the cap in place or is it tight enough to seal bay itself? I know the lock in place pretty tightly.
If you hot-tube cut undersize holes (scrap of smaller tube, heat up gently, push through film can wall and keep going until you hit cool metal - important!), most any tubing you force fit through the hole will seal perfectly. The melting point is really low, be careful and practice on a spare first.
MJD
#9
RE: Film Can Fuel Tank
I took a slightly different approach and used a continuous piece of tubing. On the pickup tube, I worked a short piece of brass tubing along the inside of the tubing, sort of like a shunt used in arteries, to the point where it passes thru the can. The short piece of brass keeps the tubing from collapsing and ensures a tight seal. You can see the slight bulge indicated by the bamboo skewer.
The tubing is the silicone insulation from a piece of 12 ga. noodle wire - the very flexible wire used by the car boys and on many lipos. The insulation is impervious to fuel and extremely flexible allowing the clunk to move freely. The clunk in the picture is a standard Sullivan clunk with the barb cut away and a short piece of tubing sweated into the hole. The barb is too large for most of out tubing sizes, but the tubing insert is just about ideal.
I got the idea of having no joints in the fuel tubing from CombatPigg, so just adapted it to a Fuji tank.
andrew
The tubing is the silicone insulation from a piece of 12 ga. noodle wire - the very flexible wire used by the car boys and on many lipos. The insulation is impervious to fuel and extremely flexible allowing the clunk to move freely. The clunk in the picture is a standard Sullivan clunk with the barb cut away and a short piece of tubing sweated into the hole. The barb is too large for most of out tubing sizes, but the tubing insert is just about ideal.
I got the idea of having no joints in the fuel tubing from CombatPigg, so just adapted it to a Fuji tank.
andrew
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RE: Film Can Fuel Tank
After using (Fuji) film canister tanks for years, the only changes I'd make to my original drawing (thanks SGC!) would be to recommend a change from brass to copper tubing (brass corrodes and turns funky green after a while) and to recommend a periodic inspection (yearly?) to check for cracks between the 2 holes. I've made probably 30-40 of them and have had 2 that developed cracks.
And no, there is no reason to add any sealant, tape, heat shrink or anything else to seal the cap. They don't leak.
Also, drill a hole (1 1/4" holesaw) in a soft block of foam and stuff that in the fuselage. That insulates the tank from the buzzy vibes from 1/2A engines and really improves the running characteristics.
And no, there is no reason to add any sealant, tape, heat shrink or anything else to seal the cap. They don't leak.
Also, drill a hole (1 1/4" holesaw) in a soft block of foam and stuff that in the fuselage. That insulates the tank from the buzzy vibes from 1/2A engines and really improves the running characteristics.
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RE: Film Can Fuel Tank
ORIGINAL: DICKEYBIRD
And no, there is no reason to add any sealant, tape, heat shrink or anything else to seal the cap. They don't leak.
And no, there is no reason to add any sealant, tape, heat shrink or anything else to seal the cap. They don't leak.
MJD