Sight Gauge Tubing

[Dorsal]

Anybody know the tubing size off the top of their head? I need to replace mine (again) but that info is up at the hangar.

[cap01]

checked my notes and I'm using tygothane c-2101a 1/4 in. ID. this stuff still gets discolored. every few years I replace the tubing when I do the condition check.

[Dorsal]

Thanks Chuck, I have the same experience with the stuff, fortunately replacing it is not difficult.

[kmach]

sources for this tygon c-210 ?

[Paul Z]

I have been replacing mine every year at the Annual Inspection. I have found it yellows really bad when using auto fuel or MoGas, I quit using auto fuel or MoGas after an issue with it stripping either mold release or epoxy out of my tanks. I sloshed and started using 100LL exclusively. Since I started using 100LL, they don't yellow as fast. I replaced with tygon c-210 sight gauges from John. I went and looked at it on e-Bay, and I also ordered a 50 foot piece of tygon c-210 off of e-bay. Now I have already cut and installed the copper wire & slosh restrictors in and ready for next year. I've got enough for the rest of my life.

[dholly]

My SLSA manufacturer recently changed requirement for wing tank sight tube replacement from Tygon C-210-A to Tygon LP-1500. It is compatible with E-10 ethanol blend fuel.

[jrevens]

After reading about the issues with the fuel sight tubes, I did some research awhile back and bought some of the LP-1500. I played with it a little, with mixed results. It is a little stiffer and more prone to kinking than the C-210-A... it didn't make those 90 deg. bends nearly as well. I went so far as to make a form to contain the tubing & keep it from kinking while I heated it in the oven to see if I could get it to maintain it's shape. When I got it to a temperature that it would do that fairly well, it clouds up some, which may or may not be acceptable. I don't know what the heating might be doing to it's other properties. I couldn't get an answer from the distributor about whether it could/should be heat-formed or not. I ended up using the tubes that came in my kit, but I sure don't like the probability of having to replace them that often... there's got to be a better way.