They make a black neoprene fuel line that works great with gas or glow and doesn't harden like tygon so you don't need to reline your gas tanks every year. Some hobby shops even have it in stock, others just say they are out and ordering more. [>:]
That's what I was wondering about. I have my first gas airplane. I bought a gas conversion kit for the tank (I think it was from Sullivan) and used some other gas rated lines to the engine, which didn't look as clear as the tygon with the tank kit. Anyway I happened to check how the tank was doing after just 2 months and realized that the tygon was becoming so stiff that it wasn't flopping around in the tank like it should. I replaced it with the other yellow, gas rated line which is still soft. I was thinking that since our gas here in CO is required to have 10-15 percent ethanol it may have sped up the hardening. I don't recall that the other yellow line said neoprene, but it is definately different than the tygon. Any ideas?[X(]
Rod S