Mark, When I visited Wicks while looking for fuel line for my Minimax, they directed me to use their clear fuel line tubing instead of Tygon or the blue tinted stuff that a lot of ultralighters use. - very easy to see the fuel level. After two years I've seen little to no discoloration. I take , what I think, is extra caution by replacing the tubing every two years for a few bucks and a little time.
Ed -----Original Message----- From: Mark Langford Sent: Monday, October 15, 2012 8:03 PM To: KRnet Subject: KR> fuel tank sight gauge tubing? KRnetHeads, It's been kind of quiet today, so let me throw this one out there. When I bought N891JF, the sight tube was discolored due to age to the point that I could barely see through it. I updated it with new tubing from McMaster Carr, Tygon F-4040-A, which is what was used originally. The problem is this tubing is extremely yellow, and it wipes out the blue dye in the 100LL fuel to the point that it's like water. You can only see the dividing line (miniscus) of the fuel level, and that takes some searching most of the time.. The easy solution would be to put a little ball of some sort in the tubing, and it would have to be 3/16" or smaller to freely float to the surface.. Anybody have an idea on a source for something that would work for that job? Another option (but not as attractive as the floating ball) would be a clear tubing that's proven to work with fuel. Any ideas? Mark Langford
