From: "Ian McPhee" <[EMAIL PROTECTED]>
http://www.boatus.com/Seaworthy/fueltest.asp
I think it is probably time to reconsider the use of unleaded with ethanol
in motorgliders with glass tanks. I do know John Viney and Chris Kiehn
(RAAus) went to an industry day and both of them came away thinking Avgas
for aviation and unleaded for cars. I notice Shell optimax 98 fuel is gone
and I believe the replacement has at least 5% ethanol but do a shake test
with 1cm of water in a sample of fuel. I gather the guys at the refinery
when the 98 car fuel is low on octane rating they bubble butane(?) gas
thriugh the fuel to up the octane rating but when that fuel goes up the
hill to Armidale NSW (3500ft asl) it is already below on octane rating as
the gasses go out of solution.
I think your subject title may miss the point, Ian. The problem is more
likely to be with the resin than the glass. It's not clear, but it appears
that your reference is testing tanks made from polyester resin. I would
think that most MG tanks are made from epoxy which I think will be less
subject to attack by ethanol. Does anybody know the facts?
Are their any experts out there on fuels?
Yes. But I'm not one of them. :)
Graeme Cant
Ian McPhee (skype macca304)
Box 657
Byron Bay NSW 2481 Australia
Tel +61(0)2 66847642 mob +61(0)428847642
[EMAIL PROTECTED]
www.mrsoaring.com
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