Frank Davis wrote:

Paul,

The April issue of Kitplanes has an artilce titled "Minimizing
Post-Crash Fires"  It got my attention, as not being toast has always
been a high prioity of mine.  It talks about using a foam filler for
fuel tanks.  It says that tanks already built can be retrofitted with
foan balls inserted through the filler neck.  No moving-parts level
gages allowed.

My thoughts are about the effect of foam in a tank on the process of
pre-mixing fuel and two-stroke oil.  It seems like oil  poured into the
tank, prior to adding the fuel, would adhere to the foam due to its
viscosity.  The fuel then would flow through the oil soaked foam,
improving the process of getting the oil into solution.

Often things aren't as they first seem.  I would appreciate any thoughts
on this subject.  Perhaps someone with a race car background could
comment.

Cheers, Frank

We had foam in the Chaparral fuel tanks but no oil.

Paul Lamar
 
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