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1. 08:08 AM - Re: Autofuel (Hinde, Frank George (Corvallis))
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--> RV7-List message posted by: "Hinde, Frank George (Corvallis)" <frank.hinde@hp.com>
Nope...And I am not opening all this up again.
But with a PROPERLY designed fuel system the only place vapour will be
an issue will be in the injector lines....This should be be more in the
"annoyance" level rather than the life threatening Vapour lock that can
happen when the fuel pump is not in the correct place...Hydraulically
speaking.
Note there are many auto conversions flying around without VL
issues...But look where there fuel pumps are...Very different to the
standard Lycoming setup...I'm simply replicating this on a Lycoming.
Frank
-----Original Message-----
From: owner-rv7-list-server@matronics.com
[mailto:owner-rv7-list-server@matronics.com] On Behalf Of Cliff Lotter
Subject: Re: RV7-List: Autofuel
--> RV7-List message posted by: "Cliff Lotter" <exodus@gds.co.za>
Have you forgotten about vapour-lock?
Cliff Lotter
do not archive
----- Original Message -----
From: "Hinde, Frank George (Corvallis)" <frank.hinde@hp.com>
Subject: RE: RV7-List: Autofuel
> --> RV7-List message posted by: "Hinde, Frank George (Corvallis)"
<frank.hinde@hp.com>
>
> Hi All,
>
> According to GAMI the IO360 can run premium autofuel and they
> recommend the following.
>
> Based presumably on the testing they have done with their new PRISM
> ignition system that adjusts the spark timing and measures the crank
> angle where the max cylinder pressure occurs....Apparently this point
> is
> 16 deg ATDC.
>
> For the first time we are on the cusp of having the timing being
> adjusted based on what the engine is actually doing...its a bit like a
> highly advanced knoock sensor found on auto engines.
>
> By this time you should be saying WOW!
>
> The great thing is you can almost throw any fuel in it you want (as
> long as it does not pre-ignite)...If it detontates the Prism will
> presumably retard the ignition until it stops.
>
> But I digress...They say to keep CHT's down to 375F or less. And then
> run at 100F ROP or 25 to 50 LOP.
>
> So there you have it...They believe these are conservative numbers.
>
> Frank
>
>
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