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RotaxEngines-List Digest: 3 Msgs - 01/13/09

 
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Tom463(at)aol.com
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PostPosted: Wed Jan 14, 2009 5:47 am    Post subject: RotaxEngines-List Digest: 3 Msgs - 01/13/09 Reply with quote

I recently was told the Ethanol in auto gas can cause the paper fuel filters commonly used on Rotax engines to become clogged. Has anyone had an issue with this?

Tom
N569AT

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larry(at)macsmachine.com
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PostPosted: Wed Jan 14, 2009 7:09 am    Post subject: RotaxEngines-List Digest: 3 Msgs - 01/13/09 Reply with quote

Tom,
For 2 years I've been flying with a paper fuel filter, NAPA 31003,
changed out every year, and have never had a clog or problem of any sort.
Perhaps you had water that froze in the filter. That might do it. I used
87 octane (with Ethanol 10%) for 2 years and this winter, after draining
tanks for the annual to check screens, I replaced the 87 octane with
100LL because of the length of time the plane sets in the winter. This
year it's been 3 months and looks like snow may hold it off longer.
Will resume 87 or 91 octane in warmer weather as available.
The last fuel drained from the lines had signs of phase-separation
cloudy and stratified layering at 3 months.

Larry McFarland 601HDS with Stratus Subaru at www.macsmachine.com

Tom463(at)aol.com wrote:
Quote:
I recently was told the Ethanol in auto gas can cause the paper fuel
filters commonly used on Rotax engines to become clogged. Has anyone
had an issue with this?

Tom
N569AT
*
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b.carl@sympatico.ca



Joined: 20 May 2008
Posts: 77

PostPosted: Wed Jan 14, 2009 9:19 am    Post subject: RotaxEngines-List Digest: 3 Msgs - 01/13/09 Reply with quote

Tom
A few years back when I was still flying in the winter I saw ice crystal collect in the funnel filter. This was on very cold mornings -20C with auto gas left outside in plastic containers. The crystals looked like tiny needles 1/4" long.
These would clog any fine filter.
Carl
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