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Date: Fri, 21 Jan 2005 13:04:37 -0500
From: WRJJRS@aol.com
To: flyrotary@lancaironline.net ("Rotary motors in aircraft")
Subject: Re: [FlyRotary] Re: Pport/cold side injectors
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Jerry, 
 In a recent posting "over there" Francois at Mistral did mention the one item I feared as a problem. Upstrream injecting can cause icing inside the runner. They claimed to have experienced this. Since you are passing a fuel air mixture through the tube you can experience the same difficulty as a carburator, though for different reasons.
Bill Jepson

In a message dated 1/21/2005 9:47:37 AM Eastern Standard Time, "Ed Anderson" <eanderson@carolina.rr.com> writes:

>Jerry, I don't really know if anyone has run/flow with Paul L's crossover
>intake.  However, if they are not turbocharged they are not likely to be
>experiencing any detonation - just perhaps some uneven running - if, indeed
>any problem associated with distillation exists.
>
>Ed A
>.
>----- Original Message -----
>From: "Jerry Hey" <j-winddesigns@thegrid.net>
>To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
>Sent: Friday, January 21, 2005 9:24 AM
>Subject: [FlyRotary] Re: Pport/cold side injectors
>
>
>> Ed,  is anybody running an engine with Paul L's crossover intake?   If
>> distilation is an issue, they would have experienced it too,
>> presumably.  Jerry
>>
>>
>> On Friday, January 21, 2005, at 09:12  AM, Ed Anderson wrote:
>>
>> > The Swiss Mistral rotary folks reported that when they went to long
>> > runners
>> > that they believed they encountered  a "distillation" problem as Ernest
>> > mentioned.  Due to this problem they believed that they encounter
>> > detonation
>> > with their turbo set up due to the "Low Octane" part being ingested at
>> > a
>> > different time than the lighter high octane part of the fuel.  I am
>> > certainly not enough of a chemist to even know if this even sounds
>> > plausible.  However, the team did have a Chemist and that is what he
>> > reported.
>> >
>> > I must admit I'm a little bit skeptical of this mode as it would seem
>> > that
>> > even if it happened you would have a continuos stream of light and
>> > heavy
>> > elements intermixing between one injection period and the next.  But,
>> > they
>> > certainly had the resources and inclination to look into the problem
>> > and
>> > that was their conclusion.
>> >
>> > Ed A
>> >
>> >
>> > ----- Original Message -----
>> > From: "Ernest Christley" <echristl@cisco.com>
>> > To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
>> > Sent: Friday, January 21, 2005 8:48 AM
>> > Subject: [FlyRotary] Re: Pport/cold side injectors
>> >
>> >
>> >> On Thu, 2005-01-20 at 20:41, Jerry Hey wrote:
>> >>> Thanks Ken,   I want to try to make cold side fuel injection  work.
>> >>> Idon't see any reason, YET,  that would indicate the system would
>> >>> notwork.  But if it does not work, then I will COPY  your set up.
>> >>>
>> >>> I have seen carburetor intakes on P Ports with about  a  12 inch
>> >>> runner made from a 90 degree sweep.   They were turning out  huge
>> >>> power.    Jerry
>> >>>
>> >>
>> >> Check the FlyRotary archives.  There was some discussion of long
>> >> runners
>> >> a while back.  I forget who it was, but they found that the fuel will
>> >> 'distill' in the runners.  The lighter compounds get sucked out and
>> >> ingested immediately.  The heavier parts fall behind and get taken in
>> >> as
>> >> clumps.  The end result was that the engine wasn't breathing a nice
>> >> even
>> >> mixture, but a uneven combination of light petroleum gasses and balls
>> >> of
>> >> oil.
>> >>
>> >> At least that is how I understood it all.
>> >>
>> >>
>> >>
>> >>>>  Homepage:  http://www.flyrotary.com/
>> >>>>  Archive:   http://lancaironline.net/lists/flyrotary/List.html
>> >>
>> >
>> >
>> >
>> >>>  Homepage:  http://www.flyrotary.com/
>> >>>  Archive:   http://lancaironline.net/lists/flyrotary/List.html
>> >
>>
>>
>> >>  Homepage:  http://www.flyrotary.com/
>> >>  Archive:   http://lancaironline.net/lists/flyrotary/List.html
>
>
>
>>>  Homepage:  http://www.flyrotary.com/
>>>  Archive:   http://lancaironline.net/lists/flyrotary/List.html
>