Re: [T3] ethanol

[Jim Adney <jadney@vwtype3.org>]

On 30 Mar 2006 at 13:11, Constantino Tobio wrote:

> Dave Hall wrote:

> >I wonder what mods the Brazillian Beetles needed for running on ethanol back in
> >the '60s.

> Good question. I can't imagine the rubber held up too well to alcohol.

I always go to my Parker O-ring Handbook to answer questions like 
this. When I looked it up, it looked like all the compounds that I 
recognized as common were completely compatable with ethanol except 
for nitrile. I figured that that meant that ethanol was pretty likely 
to be fine, but then I decided to look up gasoline.

Under gasoline, I found that just about the only compatable compound 
was nitrile, the one that was poor with ethanol. 

So, yes, it looks like it might be difficult to make a hose that 
works well with gasohol. Of course the percent of ethanol may make a 
big difference.

As far as rubber compatibility goes, it looks like methanol is about 
the same as ethanol.

-- 
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Jim Adney, jadney@vwtype3.org
Madison, Wisconsin, USA
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