snap it

My Feedback: (6)

Does anybody know how to stop my fuel tank from foaming? I have a 1/2 inch of foam between the fuse and the tank. My LHS said to try a differant clunk that looks more like a brass mesh. Has anyone heard of this, does it work.....I guess the mesh would stop air from getting in the line. Sorry to get off the subject....


Thanks Snapit,

DMcQuinn

My Feedback: (13)

If you have 1/2 inch foam between the tank on all sides, then you do not have any significant foaming. What are your symptoms?

3dd

My Feedback: (6)

put one drop of armerol in the gal of fuel as a foaming agent and this will help.the clung idea i don't think will help to stop air going into the carb.try a different kind of foam around the tank,hope this helps

Spacey

Did you make absolutely sure the prop is prefectly balanced? I mean with a proper magnetic balancer? Also are you using a spinner? The lower quality and sometimes even high quality spinners are sometimes the source of the problem. You aren't running the motor too lean or too rich right? Also on the foam between the tank are you absolutely sure there is nothing the tank is touching other than the foam? If it touches the wing or anything like a hook for the retainers that could be a problem as well. Also try to loosen up the tank retaining system a little so the foam does not get squashed making it rigid. That is the main reason I prefer using rather big rubber bands as they help grip the tank a little so I don't have to pull them tight. My tanks are actually quite loose allowing the foam to work very well. If this still does not solve it you could try more foam for that matter.

tetherite

You might also make sure the foam you use is rubber based and not the plastic based foam. It does make a difference[X(].
FYI.
Ray

AFSalmon

My Feedback: (3)

This problem rarely ever comes up these days as I think most fuel manufacturers either design in prevention or their formulas don't have the problem to begin with. I use a cheap piece of 1/2" foam and it's not even the good rubber stuff. Just what you find laying around and have never had any problems. I use Cooper fuels exclusively and have run probably 50 gallons over teh last two years with not a hint of problems. I don't think the clunk is going to make any difference though. All good suggestions below and one other thing to check is where you vent line enters back into the tank. Make sure it terminates at the front, preferably at the top of the tank so that the incoming exhaust gas does not bubble the fuel.