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zodierocket(at)hsfx.ca
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 Posted: Mon Aug 27, 2007 8:34 am Post subject: question about fuel related to aviation. |
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[img]cid:image001.gif(at)01C7E8A6.8D715B20[/img]
David , I tried to find the transport Canada letter explaining the Octane loss of Mogas. >From memory after
a week 95 = 94
two weeks 95= 92
3 weeks 95=90
4 weeks 95 = 87
5 weeks 95 = 84
3 mos – use only to start fires
And so on. Plastic containers lose octane a lot faster then steel kept in dark and cold. Short of it, is simple, after 2 weeks never add this gas to your plane, after 3 mos never use this gas in your lawnmower as mogas separates and creates varnish. IF your going to store your fuel for more then 3 mos for your car or lawnmower add fuel stabilizer. Then you are good for a year, give or take a month. Also be aware in northern climates and in Canada Especially we have 4 different blends of fuel depending on the season. EACH BLEND WILL AFFECT CARB ICING TIMES.
In short , only buy your gas from a busy station. Never store for more then 3 mos without action. Never trust that the high grade of fuel you just bought at a gas station is new mix and fresh.
Mark Townsend
Can-Zac Aviation Ltd.
president(at)can-zacaviation.com (president(at)can-zacaviation.com)
www.can-zacaviation.com
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Ron Lendon
Joined: 10 Jan 2006
Posts: 685
Location: Clinton Twp., MI
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ashontz
Joined: 27 Dec 2006
Posts: 723
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| Posted: Tue Aug 28, 2007 6:03 am Post subject: Re: question about fuel related to aviation. |
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Has anyone noticed any difference between carburated engines and fuel injected engines handling stale gas any better than the other? Sounds like an odd question but there may be something to it.
do not archive
| zodierocket(at)hsfx.ca wrote: | [img]cid:image001.gif(at)01C7E8A6.8D715B20[/img]
David , I tried to find the transport Canada letter explaining the Octane loss of Mogas. >From memory after
a week 95 = 94
two weeks 95= 92
3 weeks 95=90
4 weeks 95 = 87
5 weeks 95 = 84
3 mos ? use only to start fires
And so on. Plastic containers lose octane a lot faster then steel kept in dark and cold. Short of it, is simple, after 2 weeks never add this gas to your plane, after 3 mos never use this gas in your lawnmower as mogas separates and creates varnish. IF your going to store your fuel for more then 3 mos for your car or lawnmower add fuel stabilizer. Then you are good for a year, give or take a month. Also be aware in northern climates and in Canada Especially we have 4 different blends of fuel depending on the season. EACH BLEND WILL AFFECT CARB ICING TIMES.
In short , only buy your gas from a busy station. Never store for more then 3 mos without action. Never trust that the high grade of fuel you just bought at a gas station is new mix and fresh.
Mark Townsend
Can-Zac Aviation Ltd.
president(at)can-zacaviation.com (president(at)can-zacaviation.com)
www.can-zacaviation.com
-- |
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dkbrooks(at)gmail.com
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| Posted: Tue Aug 28, 2007 6:25 am Post subject: question about fuel related to aviation. |
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That is an interesting question. I put both my Miata and a motorcycle in storage for almost a year when I moved and unfortunately didn't have the time (or sense?) to put fuel stabilizer in either one of them. The Miata came out of the trailer and fired right up (with a freshly charged battery) and the Motorcycle is a wreck. The idle jets are totally gummed up and it only runs at full throttle (fun, if you like wheelies, but dangerous, especially in traffic).
I am guessing that there are two reasons for the difference: the fuel Miata injection system doesn't have as many tiny moving parts for the lacquer build up on as the Suzuki carbs; at the same time the Miata fuel control computer can adjust fuel mixture and spark to compensate for the imperfect fuel in real time by reading EGT and O2 levels in the exhaust.
Dave
On 8/28/07, ashontz <ashontz(at)nbme.org (ashontz(at)nbme.org)> wrote:[quote] --> Zenith-List message posted by: "ashontz" <ashontz(at)nbme.org (ashontz(at)nbme.org)>
Has anyone noticed any difference between carburated engines and fuel injected engines handling stale gas any better than the other? Sounds like an odd question but there may be something to it.
do not archive
zodierocket(at)hsfx.ca wrote:
| Quote: | [img]cid:image001.gif(at)01C7E8A6.8D715B20[/img]
David , I tried to find the transport Canada letter explaining the Octane loss of Mogas. >From memory after
a week 95 = 94
two weeks 95= 92
3 weeks 95=90
4 weeks 95 = 87
5 weeks 95 = 84
3 mos ? use only to start fires
And so on. Plastic containers lose octane a lot faster then steel kept in dark and cold. Short of it, is simple, after 2 weeks never add this gas to your plane, after 3 mos never use this gas in your lawnmower as mogas separates and creates varnish. IF your going to store your fuel for more then 3 mos for your car or lawnmower add fuel stabilizer. Then you are good for a year, give or take a month. Also be aware in northern climates and in Canada Especially we have 4 different blends of fuel depending on the season. EACH BLEND WILL AFFECT CARB ICING TIMES.
In short , only buy your gas from a busy station. Never store for more then 3 mos without action. Never trust that the high grade of fuel you just bought at a gas station is new mix and fresh.
>
|
--------
Andy Shontz
CH601XL - Corvair
www.mykitlog.com/ashontz
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=131328#131328 [quote][b]
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ashontz
Joined: 27 Dec 2006
Posts: 723
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| Posted: Tue Aug 28, 2007 6:34 am Post subject: Re: question about fuel related to aviation. |
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I have 3 cars, two are fuel injected and one is carburated, the carburated one seems to be very sensitive to contaminated fuel, possibly contaminates like, oh, I don't know, ethanol mixed in. 
I'm wondering if there's some way (I'm sure there is) to hook a fuel injector rail up to Corvair engine. I may try that when I get to that point.
[quote="dkbrooks(at)gmail.com"]That is an interesting question. I put both my Miata and a motorcycle in storage for almost a year when I moved and unfortunately didn't have the time (or sense?) to put fuel stabilizer in either one of them. The Miata came out of the trailer and fired right up (with a freshly charged battery) and the Motorcycle is a wreck. The idle jets are totally gummed up and it only runs at full throttle (fun, if you like wheelies, but dangerous, especially in traffic).
I am guessing that there are two reasons for the difference: the fuel Miata injection system doesn't have as many tiny moving parts for the lacquer build up on as the Suzuki carbs; at the same time the Miata fuel control computer can adjust fuel mixture and spark to compensate for the imperfect fuel in real time by reading EGT and O2 levels in the exhaust.
Dave
On 8/28/07, ashontz <ashontz> wrote:[quote] --> Zenith-List message posted by: "ashontz" <ashontz>
Has anyone noticed any difference between carburated engines and fuel injected engines handling stale gas any better than the other? Sounds like an odd question but there may be something to it.
do not archive
zodierocket(at)hsfx.ca wrote:
| Quote: | [img]cid:image001.gif(at)01C7E8A6.8D715B20[/img]
David , I tried to find the transport Canada letter explaining the Octane loss of Mogas. >From memory after
a week 95 = 94
two weeks 95= 92
3 weeks 95=90
4 weeks 95 = 87
5 weeks 95 = 84
3 mos ? use only to start fires
And so on. Plastic containers lose octane a lot faster then steel kept in dark and cold. Short of it, is simple, after 2 weeks never add this gas to your plane, after 3 mos never use this gas in your lawnmower as mogas separates and creates varnish. IF your going to store your fuel for more then 3 mos for your car or lawnmower add fuel stabilizer. Then you are good for a year, give or take a month. Also be aware in northern climates and in Canada Especially we have 4 different blends of fuel depending on the season. EACH BLEND WILL AFFECT CARB ICING TIMES.
In short , only buy your gas from a busy station. Never store for more then 3 mos without action. Never trust that the high grade of fuel you just bought at a gas station is new mix and fresh.
>
|
--------
Andy Shontz
CH601XL - Corvair
www.mykitlog.com/ashontz
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=131328#131328
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Gig Giacona
Joined: 10 Jan 2006
Posts: 1416
Location: El Dorado Arkansas USA
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| Posted: Tue Aug 28, 2007 6:59 am Post subject: Re: question about fuel related to aviation. |
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Yea, there is. WW just spent some time doing it and wasn't happy with the results.
| ashontz wrote: |
I'm wondering if there's some way (I'm sure there is) to hook a fuel injector rail up to Corvair engine. I may try that when I get to that point.
|
| | - The Matronics Zenith-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
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_________________
W.R. "Gig" Giacona
601XL Under Construction
See my progress at www.peoamerica.net/N601WR |
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