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From: david mccandless <daval@iprimus.com.au>
Subject: Re: [FlyRotary] Re: fuel pumps
Date: Tue, 31 Oct 2006 12:57:48 +0800
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
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>
> You just need 3.5 Psi for the Weber. Although I use 6 Psi in the race=20=

> car. And some carb tricks on top of that.=A0

Hi Lynn,
do you have any ideas on methods to lean a weber, or any carb for that=20=

matter, for altitude mixture adjustment. I have heard of a vacuum line=20=

to the inlet manifold thru a needle valve to the fuel bowl, then vary=20
the pressure head in the fuel bowl. And, jetting the carb at sea level=20=

with the choke on, and then backing off the choke as the airplane=20
climbs.
Any comments or suggestions?
BR, Dave McC

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<excerpt>

<fontfamily><param>Arial</param><smaller>You just need 3.5 Psi for the
Weber. Although I use 6 Psi in the race car. And some carb tricks on
top of that.=A0

</smaller></fontfamily></excerpt>

Hi Lynn,

do you have any ideas on methods to lean a weber, or any carb for that
matter, for altitude mixture adjustment. I have heard of a vacuum line
to the inlet manifold thru a needle valve to the fuel bowl, then vary
the pressure head in the fuel bowl. And, jetting the carb at sea level
with the choke on, and then backing off the choke as the airplane
climbs.

Any comments or suggestions?

BR, Dave McC


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