I maiden-ed my H9 US 40 today and until an hour ago, I thought the day had gone well. I was re-checking the plane tonight when I noticed that the foam inserts which I had used to cover the receiver and battery were wet. On further inspection, I could see fuel spilled all down the servo quarters...major bummer.

I removed the fuel tank and found that the seal was leaking! It must have vibrated loose while I was breaking in a 4-stroke! Either that I hadn't fitted it correctly in the first place. I've removed the receiver and battery - seem fine and I have soaked up the excess fuel. The balsa is soaked but I have put the plane out to dry. Once it's dry I will use some K2R spot remover (ask me why I have this stuff - yes, this is the 2nd time the fuel tank leaked on me!). I think once the K2R has been dusted off, I'll re-epoxy the joints that I can get to then fuel proof the balsa by brushing around some thinned epoxy - am I going the right way about it?

Does anyone have suggestions for a leak proof tank (either a tank type or should I cover the fuel tank in a zip-lock bag?). I am building a H9 P51 and I DO NOT WANT this to happen to me on this one!

Steven