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kitfoxpilot(at)msn.com
Guest

Posted: Thu Dec 07, 2006 4:23 am Post subject: Old Subject?

I live in Maryland, and found out that most if not all the gas stations in 

my area are using gas with 10% ethanol added!  will this type of gas be safe 

to use in the Kitfox tanks?



Also, if I decided to use Avgas will I have to change my fuel lines back to 

Aviation fuel lines.



Thanks for any input



Ray



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Bill Willyard

Joined: 10 Jan 2006
Posts: 34
Location: Grandville, Michigan U.S.A.

Posted: Thu Dec 07, 2006 4:40 am Post subject: Old Subject?

Ray,

   I switched back to 100LL about a year ago and have not noticed any problems with the automotive grade fuel lines so far. I will continue to monitor the lines but suspect that there will not be a problem as avgas does not have as many additives as auto fuel. 

    

   Bill W.

    

  

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_________________
Bill Willyard
Classic IV 912UL

eskflyer(at)lvcisp.com
Guest

Posted: Thu Dec 07, 2006 4:45 am Post subject: Old Subject?

Ray the ethanol will slowly dissolve the fuellines in the fox or anyother 

plane with rubber fuel lines . I use 100ll with my 582 and have had no 

problems at all . No do not change the lines to mil spec , Just use what u 

have with 100LL,



John Perry

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Float Flyr

Joined: 19 Jul 2006
Posts: 2704
Location: Campbellton, Newfoundland

Posted: Thu Dec 07, 2006 6:09 am Post subject: Old Subject?

There is a guy on the Yahoo-avid list who operated for years in California

where 10% eth has been in use for years.  He always pre mixed his fuel

(R582) and operated for years with no problems.  He now has a nice new Jab

and is still using MOGAS but now he puts just a little  oil in the tanks to

cut the action of the Ethanol on the fillers of his composite tanks.



It seems that the ethanol is more willing to bond with oil than resin.



There are a few other problems with Eth some of which include vapour locks,

increased moisture in the fuel which can cause carb ice and possible

separation of the ethanol from the gas ( you could find yourself with pure

Ethanol in your engine).



The down side of mixing the oil in with the gas is it tends to lower the

Octane rating a tad.  I think it is probably safe enough to use as long as

you take a few precautions. 

First I wouldn't leave gas in my wing tanks where they can absorb moisture

form the air for days on end.  If you don't expect to fly for a  week or

more de-fuel your tanks and put the gas into sealed containers.   

Always buy your fuel at the busiest gas station in town.  Some of these

stations will get fresh gas almost every night.

For two stroke engines premix the gas, for four stroke engines mix about

300-500:1 ( half a cup to ten gal Approx) of two stroke oil in with the gas.

If the engine gets really smoky you're using too much oil.

For two stroke engines it is hard to recommend the use of 100LL only because

the lead can plate out on the roller bearings on the crankshaft. (Not good)

Both two stroke and four stroke engines will require more work on keeping

the spark plugs clean. ( Just a pain in the keester) Two stroke engines may

require decarbonising of the rings at shorter intervals. (Gotta be done any

way, sooner or later)



There is of course a method of removing Ethanol from your gas.  The problem

with that is you can't be sure what other additives may be removed with the

Ethanol and It does require a bit of equipment ( a fair size drum and a

siphon ) and putting your gas on the wagon may be something better done at

home.  When you remove the Eth from your gas expect about a 3-5 drop in

Octane rating.



Noel



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_________________
Noel Loveys
Kitfox III-A
Aerocet 1100 Floats

kitfoxpilot(at)msn.com
Guest

Posted: Thu Dec 07, 2006 9:14 am Post subject: Old Subject?

Thanks for the reply, think I'm going to switch to 100ll



Ray

[quote]From: wwillyard(at)aol.com

Reply-To: kitfox-list(at)matronics.com

To: kitfox-list(at)matronics.com

Subject: Re: Old Subject?

Date: Thu, 07 Dec 2006 07:39:29 -0500



Ray,

I switched back to 100LL about a year ago and have not noticed any problems 

with the automotive grade fuel lines so far. I will continue to monitor the 

lines but suspect that there will not be a problem as avgas does not have 

as many additives as auto fuel.



Bill W.

--

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kitfoxmike

Joined: 05 Dec 2006
Posts: 373

Posted: Thu Dec 07, 2006 9:38 am Post subject: Re: Old Subject?

IF you use 100ll than you should put in tcp plus, make sure it's the plus, it has a carbon cleaning added.  I think John sells it.

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