Originally Posted by
vertical grimmace
So funny how this topic always turns into an argument! I never said they "ALL" fail. But they can and do. It only has to happen once for it to be a serious problem. And it is not because the install was poor or done incorrectly. For gasoline, it is an inferior system, with a known failure point. If it works for you great. We have a new person to gasoline asking for tips. My tips atr not directed at those that want an argument. The beginners can heed the advice of the experienced or not. Their choice. I have seen long time IMAC guys at the field recently have stopper problems. Almost nobody at our club that I know of use them anymore. Like I said, we have Ethanol in our gas. You would not use a Gas stopper in a glow fuel set up would you? Well, that is what is going on in my state. Lucky you, that you have better gas than we do. My solution- screw on cap tanks. A much better system. A word to the wise should be sufficient.
VG, I think Al means well and I don't take offense at his words. However, I too believe the built-in lip seal of caps in the bottles I discussed earlier are simpler and better. Some opt to use aluminum screw on caps and that's fine with me. It's just that they are expensive at about 25$ a piece.
For the novices in the group, glow stoppers worked fairly well. The rubber is silicone and tends to be softer and more compliant than the rubber (usually neoprene) used in gas stoppers. Neoprene tends to be harder and less compliant than silicone. Add their apparent variable size (the one I wrote about was just too small) and it spelled trouble for me. Had to screw the thing together to much higher pressure than should have been required and it eventually split the rubber.
It's no biggie either way. And no skin off my nose either way. I offer a good solution to all for both tanks and gas lines that is both inexpensive and robust. And trust me when I say none of the few of us that offer these simpler and robust solutions are getting rich off them. Nuff said? Nah, who am I kidding. This thread will last another 10 pages.