Today's Message Index:
----------------------
1. 03:05 AM - Re: Re: speeds (pj.ladd)
2. 05:10 AM - Re: For all 912 users (kmccune)
3. 10:15 PM - Re: Regular Unleaded (Tony Oldman)
Message 1
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the Earth sucks.>>
Hi Bob,
I did hear that helicopters don`t really fly. They are just so damned
ugly that the Earth repels them.
Cheers
Pat
Message 2
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| Subject: | Re: For all 912 users |
[Laughing]
--------
Kevin
N701DZ Reserved
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=160546#160546
Message 3
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| Subject: | Re: Regular Unleaded |
In Newzealand I think we use the RON system. I have always either used 91
lead free or avgas or a mixture of both . 500 plus hrs on 503s no problems.
Only difference is that the 503 seems to run cooler on avgas and idle a
little smoother .No performance difference.
Tony
MK111 classic
----- Original Message -----
From: "jim" <jim@tru-cast.com>
Sent: Friday, January 25, 2008 7:15 AM
Subject: Kolb-List: Regular Unleaded
>
> I was tired of the spills and hassel every time I fueled my Firefly.
> After I bought a 100 gal gasboy tanker for fueling my cross-country bird
> with regular unleaded, I decided to give regular unleaded a try in the
> Firefly to see if I could standardize on one fuel in my hangar.
>
> Everybody I know uses Premium unleaded (91 octane) auto fuel in the Rotax
> 503 engines. The owner of a Rotax Repair Station said he used premium
> unleaded fuel, but that regular unleaded (87 octane) meets the Rotax fuel
> grade specification.
>
> The Rotax manual says to use minimum 90 RON fuel. But the RON method of
> octane measurement is not used in the United States. In the US, a
> different method entirely is used, called the CLC method. The number that
> results from this method is the average of the RON octane number and the
> MON octane number, so (RON + MON)/2 = CLC octane number. This is the
> number that you will find printed on a yellow label on gas pumps in the
> United States which indicate (R+M)/2.
>
> 91 RON octane is equivalent to 87 CLC octane, so the 87 CLC octane of
> regular unleaded exceeds the 90 RON specified by Rotax.
>
> Late last fall and during a couple short flights this winter I used
> Regular unleaded with no problems. Does anybody else out there use
> regular unleaded? Ever had any problems?
>
> --------
> Jim
> N. Idaho
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=160256#160256
>
>
>
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