Some ideas here: http://www.donsbushcaddy.com/sitebuildercontent/sitebuilderfiles/sightgaugeinstructions.pdf
On Mon, October 15, 2012 9:03 pm, Mark Langford wrote: > 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? > > Having seen three fuel level sensors fail on N56ML, I'm already a big fan > of the sight tube thing, although it does mean "fuel in the cockpit". > > Before I hit the "send" button, it occurred to me...a cheapo electrolyte > hydrometer would probably offer some balls that would work, but that > remains to be seen (yes I would look up the density before I wasted the > $3). Any other options?