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All Forums >> Glow Engines, Gas Engines, Fuel & Mfg Support Forums >> RC Fuels >> Glow fuel in metal can?
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Glow fuel in metal can? - 10/3/2004 3:10:44 AM   
tango28charlie


 

Posts: 114
Joined: 9/9/2004
From: Baltimore, MD, USA
Status: offline 		Hello everyone, I have a "pour and pump" for glow fuel that has a pump attached to a one gallon metal can. When I put the fuel in the can, it was tan in color, but now that it's been in there for a while, it has a greenish color to it. Is there a problem with keeping the fuel for extended periods in a metal can with some kind of corrosion going on? Once I pulled the fuel tank out of an old airplane and disassembled it, and everything metal inside the tank had a crusty green residue on it. I am hoping the same thing is not going on on a larger scale inside my fuel can. Help, anybody? Thanks!
Charlie
       Post #: 1

RE: Glow fuel in metal can? - 10/3/2004 5:50:40 AM   
RaceCity



Posts: 1842
Joined: 7/10/2002
From: NotUpNorth, USA
Status: offline 		The green crud comes from deteriorating brass fittings on your fueling set up...not the can itself. For whatever reason, these fittings corrode into a green slime when immersed in glow fuel for an extended period.

Replace this junk with plastic fittings, thoroughly rinse (or replace) the can and you shouldn't have any
more problems with getting "slimed". Same thing inside your model. Brass fittings inside a fuel tank will get creepy
looking in no time flat.

'Race

< Message edited by RaceCity -- 10/3/2004 5:56:20 AM >

(in reply to tango28charlie)
       Post #: 2

RE: Glow fuel in metal can? - 10/4/2004 2:21:29 PM   
Sport_Pilot



Posts: 7728
Joined: 1/21/2002
From: Acworth, GA, USA
Status: offline 		IMO the problem is mostly the brass fittings contacting a metal cap. I rarely have problems with brass corroding on my fuel jugs and fuel tanks but I make sure they only make contact with plastic or rubber.

(in reply to RaceCity)
       Post #: 3

RE: Glow fuel in metal can? - 10/4/2004 6:49:39 PM   
RaceCity



Posts: 1842
Joined: 7/10/2002
From: NotUpNorth, USA
Status: offline 		Brass turns green in glow fuel no matter what it contacts. Too many examples of it in my life to change
my point of view now.

That's why I don't use brass fittings ANYWHERE if it's humanly possible to avoid it.

< Message edited by RaceCity -- 10/4/2004 6:51:45 PM >

(in reply to Sport_Pilot)
       Post #: 4

RE: Glow fuel in metal can? - 10/5/2004 1:03:15 PM   
Fuelman


 

Posts: 1039
Joined: 12/31/2001
From: Jordan, NY, USA
Status: offline 		Brass fittings, tubing, screws, will all react with nitromethane (in any quantity) and slowly corrode with the byproduct being a greenish scale and pitting on the brass. The higher the nitro content, the quicker it will happen.
With the brass tubing, the corrosion is on the in inside as well as the outside.
If you use the aluminum fittings and aluminum tubing or the plastic tubing, all will be well.
Your metal can should not present a problem. You should shine a flashlight down the open empty can and check for corrosion (any kind) since cans can corrode over time if appropriate measure is not taken. (tightly capped, seals good, etc..)

Hope this helps


_____________________________

Fuelman
Cooper Fuels LLC

(in reply to RaceCity)
       Post #: 5

RE: Glow fuel in metal can? - 10/11/2004 5:00:07 AM   
Sport_Pilot



Posts: 7728
Joined: 1/21/2002
From: Acworth, GA, USA
Status: offline 		Intresting, I looked up nitromethane for corrosion results, lots of problems with many plastics, no suprise there, no problem with steel or aluminum, but it was no listing either way for brass. All I know is the only problem I have had with brass is when I leave an empty tank sitting up for a long period of time, like 5 or so years. There has been times when brass tubes have broken with very little provication, could be fatigue. Or maybe corrosion embritlement?

(in reply to Fuelman)
       Post #: 6

RE: Glow fuel in metal can? - 10/15/2004 11:31:51 PM   
jessiej



Posts: 1803
Joined: 7/6/2003
From: STATESBORO, GA, USA
Status: offline 		A chemist I am not, but when I use copper tubing rather than brass I have no problems. I don't think I am unique in this. Hopefully someone less chemistry disadvantaged than I can explain the phenomenon.

jess

(in reply to Sport_Pilot)
       Post #: 7

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