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Date: Fri, 04 May 2001 11:24:43 -0400
To: lancair.list@olsusa.com
From: Marvin Kaye <marvkaye@olsusa.com>
Subject: Re: transition:ROP to LOP
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          <<<<<<<<<<<<<<<<--->>>>>>>>>>>>>>>>
          <<  Lancair Builders' Mail List  >>
          <<<<<<<<<<<<<<<<--->>>>>>>>>>>>>>>> 
>>
 >I am still using Marvel Mystery Oil (4oz's @ 10 gallons 100LL)
 >and recommend this to the Lancair family of aircraft.

This is pretty interesting... I assume that it's for top-end 
lubrication.  As you are probably aware, I'm well along the way with the 
planned installation of a rotary (Wankel) engine in my LNC2.  The operation 
of the rotary demands that oil be introduced into the combustion chamber as 
lubrication for the apex seals.  The Mazda rotary includes an oil injection 
system to accomplish this task.  However, the problem with this scheme is 
that crankcase oil isn't exactly the cleanest burning stuff in the world, 
and so an alternative method of delivering this required lubricant to the 
rotor seals was mandated by the folks who preferred cleaner internals than 
what they got with motor oil.  Several current fliers and virtually all of 
the racing crowd who run these engines started out using Marvel Mystery 
Oil, as it seemed to be fairly clean burning and provided the required 
lubrication.  However, further testing showed that there was still some ash 
to be dealt with from burning MMO, and so an alternative was searched out 
and decided upon.  The solution that virtually all of these people have 
adopted is the mixing of high-quality 2-stroke oil with the fuel.  This is 
a true ashless dispersant oil, and one flier who decided to "take a look 
inside" his engine after 850 hours of operating with the 2-stroke mix found 
the internals to be spotless, wear negligible, and the engine capable of 
being simply reassembled with the use of an ordinary gasket set and without 
further cleanup.  The mixture ratio being used in this application is 
1:128, or 1 oz oil per gallon of fuel.  It is entirely likely that reducing 
that amount by 1/2 would still provide the top-end lubrication you are 
currently enjoying with the MMO, but without the ancillary production of 
carbon as a result of the combustion process.  Food for thought, eh?

    <Marv>
  

>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
LML website:   http://www.olsusa.com/Users/Mkaye/maillist.html
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Please send your photos and drawings to marvkaye@olsusa.com.
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>