"Capt. Geoffrey Thorpe" The Sea Hawk At Wow Way D0t C0m wrote in message
...
"Peter Dohm" wrote in message
...
"Dick" wrote in message
...

This is the first that I remember hearing of "phase separation" which may
just mean that I forgot. However, there is at least one obvious way to
...

Phase seperation is when you add water to the gas / ethanol mix and the
ethanol / water seperates out. The ammount of water required to do this
depends on the ethanol concentration and the temperature - so things might
be OK on the ground where it's warm...

The water / ethanol mix will be too "lean" for you engine and the
gasoline left behind will have a lower octane than the gasoline / ethanol
blend that may or may not be adequate for your needs.

--
Geoff
The Sea Hawk at Wow Way d0t Com
remove spaces and make the obvious substitutions to reply by mail
When immigration is outlawed, only outlaws will immigrate.
I know that I am flagellating a dead horse; but there are a very limited
munber of real solutions, and trying to substitute usenet dialog for the
work and expence of a new STC is simply ot one of the real
solutions--expecially since the percentage of ethanol or other oxiginate is
sure to remain a moving target.

1) Obviously, as already mentioned, you can switch to Avgas.

2) Presumably, with an experimental, you can just assume the risk and
"run watcha brung".

3) As discussed in several previous threads, you can precipitate the
alcohol out of the fuel, separate the remaining water (resulting from the
precipitation process) from the "pute" gasolene, and dispose of the
contaminated alcohol and water mixture which will probably contain too much
water to burn. As you just pointed out, an octane test would then be in
order--although I suspect that the fuel will remain well above the
requirement for a C-85 engine. I also have my doubts whether the resulting
fuel will be below the rating originally shown on the pump--mainly because I
strongly suspect that the ethanol is simply added to the existing fuel on an
"as available" basis.

4) The most correct solution is to recruit enough a sufficient user group
at the airport, and possibly at several nearby airports as well, to
guarrantee sufficient usage justify fuel deliveries to the FBOs and also
stocking of the additional fuel type by those FBOs. Unless there are
currently unused tanks at self service pumps, that would probably also mean
a substantial investment by the user group to purchase the needed equipment
for the FBOs. It is not just that that the FBOs probably can not afford or
justify the expense; but the phrasing of the original post suggests that the
local FBOs are not strangers to the problem of off-airpost price shopping.

IMHO, based on what I have seen and heard in my own local area, solution no.
4 will not happen; solutions 2 and 3 are problematic and probably
unacceptable; and that leaves the switch to AvGas--simply because the users
lack the understanding and resolve to support their FBOs in any other way.

Peter