The float level setting is dependent on the specific gravity of the fuel you
are using. I don't have the figures to hand but they are in the archives
somewhere. I found an article comparing various fuels and from memory in my
Weber the difference in setting was about 1/8 inch between automotive and
aviation fuel.This is enough to make a difference to your mixture
settings/jet selection but whether it would lead to flooding in the Strom I
don't know. Just for info. STCs for automotive fuel in aircraft make
reference to the need to reset the float level and of course alcohol can
play havoc with the old gaskets/rubber seals etc.
John Martindale
29 Jane Circuit
TOORMINA NSW 2452
AUSTRALIA
phone: 61 2 66584767 (H)
61 2 66869075 (W)
mobile: 0403 049990
email: johnja...@optusnet.com.au
web: www.members.optusnet.com.au/johnjanet/Martindale.htm
----- Original Message -----
From: "Oscar Zuniga" <taildr...@hotmail.com>
To: <kr...@mylist.net>
Sent: Friday, December 08, 2006 3:29 AM
Subject: KR> autogas use
> Well, here's one that I have personal experience with. The A65 on my
> Pietenpol has a Stromberg NAS-3A1 carb on it, so not much of this is
> likely
> to apply to KR drivers unless you have a similar setup using a Stromberg,
> but for what it's worth- the Stromberg does not like autogas. I have
> test-run the engine on the ground many times using non-alcohol autogas,
> regular unleaded, right from the pumps at the supermarket. I had the carb
> apart on several occasions to try to stop it from dribbling fuel out the
> airbox after shutdown. I carefully set the fuel float level and all
> internal parts, the carb was completely overhauled by an A&P for me before
> I
> installed it, and had the neoprene tipped needle with rounded seat.
>
> Now I realize that the neoprene tip is essentially the root of the problem
> because it is of unknown composition and the dribbling is the direct
> result
> of the effectiveness of the needle closing against the seat. But my point
> is- the minute I changed to 100LL the carburetor was perfectly happy and
> showed ZERO dripping before or after starting and running. I will not run
> autogas through this fuel system again unless I have to, even though the
> engine runs happily on autogas (very low compression).
>
> And closed-circuit note to Mark Langford: watch your terminology on the
> flight with Larry. "VFR on top" is not the same thing as "VFR over the
> top". The latter is a nifty and useful x-c travel tool for non-instrument
> rated pilots, while the former is an IFR procedure. I know what you meant
> when you wrote it, but you never know what kind of tattle-tales are
> lurking
> out there ;o)
>
> Oscar Zuniga
> San Antonio, TX
> mailto: taildr...@hotmail.com
> website at http://www.flysquirrel.net
>
> _________________________________________________________________
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>
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