I ran 93 mogas for years. ?I found that mogas burns hotter than 100LL. ?Watch
those temps. and valves. ?
From: Jeff Scott via KRnet <krnet at list.krnet.org>
To: ml at n56ml.com; krnet at list.krnet.org
Sent: Thursday, April 2, 2015 12:48 PM
Subject: Re: KR> Selecting an airport to be based at
I've been running the 8.5:1 compression O-200 in my KR and the 8.5:1 160 HP
O-320 in my SuperCub clone on a diet of 100% E0 premium fuel for the last 2
years.? I have a tank with filter, grounds, and electric fuel pump that is
anchored in the bed of my truck.? Nobody at the airport (including the airport
manager) has said anything about it other than they wish they had the same
setup.? I do make it a point to use safe practices for fire mitigation like
never fueling in the hangar.
Previously, one of the other pilots proposed to park his truck on the ramp at
the airport with my tank in the back to be used for fueling.? Of course the
airport administration went liability crazy and denied his request.? When I
decided to start using Mogas, I didn't ask.? I just made sure my fueling rig
was configured with the proper venting, filter, ground, and pump for the
application and started using it.? I also keep it painted and nice looking.?
They never questioned it.? It looks exactly the same as the fueling rigs hauled
around in many pickups for fueling farm equipment out in the fields, except
cleaner.? :o)
As Mark says, you want to start out with 100LL until you find whether you have
cooling/vapor lock issues and what your detonation margin might be.?
-Jeff Scott
Los Alamos, NM
> Paul Visk wrote:
>
> >>I'm starting to look for airports in the area to base my airplane at. Im
> >>finding the public airports do not allow you to bring your own mogas in.
> >>They state safety concerns.? Is this common?<<
>
> That's certainly the case at the three major airports around my place.? But
> the manager of the one I started out at told me privately "just don't let me
> or anybody else see it".? I subsequently put 40 hours on it without buying
> any 100LL, and got no complaints.? I assume you'd have access at night.? It's
> worth mentioning that some (very few) airports do sell mogas, although it's
> often 87 octane...probably not what you want.? And I'd think stability of a
> low-turnover fuel would be iffy.
>
> Having said that, you definitely want to start out burning 100LL, for the
> detonation and vapor lock resistance.? Gradually work up to pure autofuel.?
> I've been using auto fuel in N891JF over the winter, but I always have at
> least 25% 100LL in the tank for extra margin until I can install a second
> tank and do some inflight testing to prove that pure auto fuel will work for
> me with this engine on a hot summer day after idling on the ground, for
> example at SNF...
>
> Mark Langford, Harvest, AL
> ML at N56ML.com
> www.N56ML.com
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