You know those little balls in the cheap little anti-freeze and battery testers.


---- Mark Langford <m...@n56ml.com> 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?
> 
> Thanks,
> 
> Mark Langford
> ML at N56ML.com
> website at http://www.N56ML.com 
> --------------------------------------------------------
> 
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