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  #21  
Old 01-31-2016, 09:54 PM
Tram Tram is offline
 
Join Date: Sep 2007
Location: Florence, AL
Posts: 626
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Quote:
Originally Posted by N427EF View Post
For starters, you need to know what the compression ratio is on your engine.
Any ratio below 8:5 to 1 appears to do well for people running mogas.
A cool running fuel system is required to keep your vapor lock issues in check.
We are at 7.0:1. O-320B1B.

Quote:
Originally Posted by N427EF View Post
Running 100LL in one tank and mogas in the other is a very good way to test
your system before you go all out on mogas only.
That's the plan.

Quote:
Originally Posted by N427EF View Post
Before you invest in a fuel transport set up, consider 5 gal cans.
Fill up 3 or 4 to top off your tank and store none of the auto fuel in your hangar. You want mogas to be as fresh as it can be and besides as many
have pointed out, storing gas in your hangar may be frowned upon by authorities
Yeh, we aren't allowed any cans in the hangar per our lease.


Quote:
Originally Posted by N427EF View Post
Lastly, take advice from people with lots of mogas experience.
You can look forward to a cleaner running engine without lead contamination and deposits on your spark plugs
That's why I'm here.

Thanks for the help.
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  #22  
Old 01-31-2016, 09:59 PM
rv7charlie rv7charlie is offline
 
Join Date: May 2006
Location: Pocahontas MS
Posts: 3,884
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Quote:
Originally Posted by nippaero View Post
Hey rockwoodrv9a,

Did you know we have ethanol free MOGAS at the Nampa Airport? Payette also has it at the pump. I used to fly up there and fuel before Nampa brought it in this summer.

Are you guys using mogas only using ethanol free gas? What octane? Our Costco gas here contains ethanol.

Mike
Here ya go:
http://pure-gas.org/
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  #23  
Old 01-31-2016, 10:05 PM
rockwoodrv9 rockwoodrv9 is offline
 
Join Date: Dec 2011
Location: Meridian ID, Aspen CO, Okemos MI
Posts: 2,645
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Quote:
Originally Posted by rv7charlie View Post
I know about the ap. I am at the Caldwell airport, not Nampa. Buying fuel off airport is quite a bit cheaper than on airport. One of my cars runs on premium fuel too along with a bike and boat. 100g goes pretty quick.
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  #24  
Old 01-31-2016, 10:13 PM
Far North Texan Far North Texan is offline
 
Join Date: Jun 2015
Location: Alberta
Posts: 84
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No STC needed. Your 0320 should be real happy on car gas.
Just be certain that the fuel contains no ethanol.
I have a 6A. I used to use regular but it now contains ethanol, at least where I live, so I have to use super unleaded. Works great.
if you are still building the plane put in a vapor return line.

As far as gas cans in the hanger, you should never store gasoline or empty cans in a building.

Go to the local bulk fuel supplier and buy a drum of gas. Put a hand pump on it and reuse the drum. You get a little exercise but it only takes a couple of minutes to fill an RV size tank, and it does not require any power.

Be sure to attach a ground wire.
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  #25  
Old 01-31-2016, 10:43 PM
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aviationone aviationone is offline
 
Join Date: Jan 2007
Location: Mukilteo, WA
Posts: 128
Default Be Carefull

Watch out for static electricity. Most airports require that all fueling is done out side of hangers if at all.


https://youtu.be/g7IulTJlifo
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RV8 (Done)
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  #26  
Old 01-31-2016, 11:03 PM
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Xkuzme1 Xkuzme1 is offline
 
Join Date: Jan 2015
Location: KC, MO
Posts: 374
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http://www.amazon.com/Flo-Duramax-Fu...llon+gas+caddy
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  #27  
Old 02-01-2016, 10:39 AM
guccidude1 guccidude1 is offline
 
Join Date: Mar 2008
Location: Reno NV
Posts: 542
Default Mogas without an STC..

Guys: This is not intended to hijack the thread, but one more price advantage to using mogas is that some states rebate the road tax. You may have to jump thru some hoops, but may be worth it. For example, here in NV the rebate is 32 cents per gallon. Dan from Reno
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  #28  
Old 02-01-2016, 01:32 PM
kai kai is offline
 
Join Date: May 2011
Location: Berlin, Germany
Posts: 84
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There is a good SI (SI-1070S) from Lycoming regarding aviation grade and automotive fuels:

http://www.lycoming.com/Portals/0/te...e%20Models.pdf
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flying RV-9a, O-320, G3X Touch
a father&son project
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  #29  
Old 02-01-2016, 03:19 PM
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N941WR N941WR is offline
 
Join Date: Jan 2005
Location: SC
Posts: 12,887
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Quote:
Originally Posted by ChiefPilot View Post
When premium, no ethanol mogas is just over $2/gallon cheaper than 100LL, I'm not sure I understand your point. The delta, at least around here, is larger than it's ever been ($2.15/gal vs. $4.19/gal).
$1.83/gal for premium vs. $3.57 for 100LL.

The difference based on 100 hrs/yr at 7.3 gal/HR is $1,270.20.

Buying a trailer, tank, hose, etc., going to the gas station, storing the trailer / tank etc. is not worth that perceived savings to me. I am not commenting on the mogas vs. avgas debate.

I did pull my neighbor's trailer / tank to top it off and have never been so scared of driving anything in my life. If I were to tanker fuel, I would go buy an old small pickup and bolt a tank to its bed, raising the cost even more.
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O-360 w/ dual P-mags
Build the plane you want, not the plane others want you to build!
SC86 - Easley, SC
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  #30  
Old 02-01-2016, 04:48 PM
Tram Tram is offline
 
Join Date: Sep 2007
Location: Florence, AL
Posts: 626
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Quote:
Originally Posted by N941WR View Post
$1.83/gal for premium vs. $3.57 for 100LL.

The difference based on 100 hrs/yr at 7.3 gal/HR is $1,270.20.

Buying a trailer, tank, hose, etc., going to the gas station, storing the trailer / tank etc. is not worth that perceived savings to me. I am not commenting on the mogas vs. avgas debate.

I did pull my neighbor's trailer / tank to top it off and have never been so scared of driving anything in my life. If I were to tanker fuel, I would go buy an old small pickup and bolt a tank to its bed, raising the cost even more.
Everyone situation is going to be a bit different.

I'm looking at $1.6X vs $4.4X locally...

I won't be buying a trailer, tank, hose, etc. I can typically get by on 20 gallons per flight, so I'll be doing 5g cans.

I pass the MoGas station on the way to the airport, so that's a moot point. Time picking up the fuel is the same as walking the plane to fuel pumps, etc.
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