Today's Message Index:
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1. 01:59 AM - Re: Fuel - Mogas (Bob Turner)
2. 06:17 AM - Re: Re: Fuel - Mogas (Kelly McMullen)
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| Subject: | Re: Fuel - Mogas |
As Im sure you know, Avgas octane is not the same as car gas octane. 91 car gas
is 3-4 points lower than 91 Avgas, so approach this with care. I believe there
is or was someone at Concord CA (KCCR) running his -10 with one tank of 100LL
for takeoff/other full power, and one tank of car gas for cruise. I havent heard
from him in some time.
--------
Bob Turner
RV-10 QB
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=489141#489141
Message 2
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| Subject: | Re: Fuel - Mogas |
Exactly the way I would approach it. While the octane isn't the same, a
number of aircraft with exactly the same cylinders have been granted
STC's with 91 mogas. Cherokee 180, for example....same cylinders, just
carbureted. Where I operate, DA is rarely below 2000, and often above
3000, so full power isn't possible. However, my concerns have to do with
the seals in the fuel injection unit and and the Proseal in the tanks.
No injected engines have STC approval, except some big Continentals,
that I can see. Materials compatibility is of more concern than octane.
As you say, one can taxi and take-off on 100LL, and switch after
reaching altitude. Right now I would be hesitant to leave any mogas in a
tank for any period of time.
On 5/9/2019 2:58 AM, Bob Turner wrote:
>
> As Im sure you know, Avgas octane is not the same as car gas octane. 91 car gas
is 3-4 points lower than 91 Avgas, so approach this with care. I believe there
is or was someone at Concord CA (KCCR) running his -10 with one tank of 100LL
for takeoff/other full power, and one tank of car gas for cruise. I havent
heard from him in some time.
>
> --------
> Bob Turner
> RV-10 QB
>
>
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=489141#489141
>
>
>
>
>
>
>
>
>
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