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Sorry to say Mark most speed shop personel will give you the "deer in the headlights" look if you talk about leaning. In fact some corporate shops won't sell you parts if you mention and airplane FWIW. Check the back of Aerotrader for some of the small sales establishments.
Bill Jepson
-----Original Message-----
From: mark.steitle@austin.utexas.edu
To: flyrotary@lancaironline.net
Sent: Tue, 31 Oct 2006 5:28 AM
Subject: [FlyRotary] Re: fuel pumps
Dave,
Someone makes an adapter for Holly carbs that allow on-the-fly mixture control. Not sure of who, but I bet a good speed shop would know.
Mark S.
From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of david mccandless
Sent: Monday, October 30, 2006 10:58 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: fuel pumps
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.
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?
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