[NSRCA-discussion] Acetone in methanol?

[Dave Harmon]

Hi Dean.....no apology needed!
It's always a good thing to play it safe though.
Really, there is no need for prop or acetone in the 'YS' type fuels. Where
it really makes an improvement is in the zero nitro or 'FAI' mixes used in
other countries where nitro is so expensive or unavailable. 
 
Regards

Dave Harmon
NSRCA 586
K6XYZ[at]valornet[dot]com
Broken Arrow, Ok. 
-----Original Message-----
From: Dean Pappas [mailto:nsrca-discussion-bounces at lists.nsrca.org] On
Behalf Of Dean Pappas
Sent: Monday, February 20, 2006 5:24 PM
To: K6XYZ at valornet.com; NSRCA Mailing List
Subject: RE: [NSRCA-discussion] Acetone in methanol?
 
Hi Dave,
Thanks for the acetone-only test. I know that way back, we had problems with
some batches of fuel in ouir old YS 60 short-strokes. The problem was traced
to other light organic solvents that swelled the diaphragms. I guess that
straight acetone isn't one of them. I apologize.
later,
Dean
 
-----Original Message----- 
From: nsrca-discussion-bounces at lists.nsrca.org on behalf of Dave Harmon 
Sent: Mon 2/20/2006 6:06 PM 
To: 'NSRCA Mailing List' 
Cc: 
Subject: Re: [NSRCA-discussion] Acetone in methanol?
Hi Dean....I thought of that too so I soaked a couple of diaphragms in
straight acetone for a week 
and I didn't notice any swelling when compared with a new diaphragm.
 
Regards

Dave Harmon
NSRCA 586
K6XYZ[at]valornet[dot]com
Broken Arrow, Ok. 
-----Original Message-----
From: Dean Pappas [mailto:nsrca-discussion-bounces at lists.nsrca.org] On
Behalf Of Dean Pappas
Sent: Monday, February 20, 2006 4:53 PM
To: NSRCA Mailing List
Subject: RE: [NSRCA-discussion] Acetone in methanol?
 
Hi Tom,
It will swell the silicone diaphrargm in a YS, and cause all sorts of grief.
Dean P.
-----Original Message----- 
From: nsrca-discussion-bounces at lists.nsrca.org on behalf of Koenig, Tom 
Sent: Mon 2/20/2006 5:46 PM 
To: NSRCA 
Cc: 
Subject: [NSRCA-discussion] Acetone in methanol?
Gentlemen,
You may be aware most of us down here mix our own fuel. We have available
pure Methanol or a methanol product 'Shell A' which has 3% Acetone in it.
I have added 2-3% acetone into my fuel mix ( I buy pure Methanol) and I'm
not sure if I could detect a difference, if any at all. It may have idled a
bit better-but it could have been my imagination??
 
So my question is-what exactly can/does Acetone do in our fuel mixes?? Does
it do anything at all?? 
 
Thanks for any insight.
 
Tom
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