Engine runs lean, old Webra 61. Who can help?

[John Ferrell]

I have an of old OS 61 that I cannot adjust to get rich enough. It has a
Super Tiger carburator on it. As you back the needle out you get to a point
that it is getting leaner. I suspect that the port timing has been changed
by raising the exhaust port. If you fly it on a pipe, you get 1 flight per
glow plug. It does a little better with a muffler. I am about to revisit it
as an academic exercise. I plan to first put a venturi restrictor in it for
more fuel draw. If that does not do it I plan on trying different pumps &
carburators.

Anyone ever build their own pump?

John Ferrell
6241 Phillippi Rd
Julian NC 27283
Phone: (336)685-9606
johnferrell at earthlink.net
Dixie Competition Products
NSRCA 479 AMA 4190  W8CCW
"My Competition is Not My Enemy"


----- Original Message ----- 
From: "Urs Baertschiger" <ursbaertschiger at hotmail.com>
To: <discussion at nsrca.org>
Sent: Saturday, November 29, 2003 5:22 AM
Subject: Re: Engine runs lean, old Webra 61. Who can help?



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