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jme
 Post subject: Mixture Setting
PostPosted: Mon Jan 10, 2011 6:33 pm 
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Does the nut on the bottom of the SU carby affect only idle mixture, or does it affect mixture right across the rev range?
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jb007
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PostPosted: Mon Jan 10, 2011 6:35 pm 
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All of the range. :)

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Irish Yobbo
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PostPosted: Mon Jan 10, 2011 7:49 pm 
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Yep, the mixture nut changes the mixture throughout the rev range.

The idle screw changes the amount of mixture allowed through at idle - changing the idle screw won't affect the rest of the range.
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jb007
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PostPosted: Mon Jan 10, 2011 7:57 pm 
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Irish Yobbo wrote:
Yep, the mixture nut changes the mixture throughout the rev range.

The idle screw changes the amount of mixture allowed through at idle - changing the idle screw won't affect the rest of the range.

Correction; The idle screw adjusts the idle speed, not the mixture. Only the mixture nut changes the mixture. :roll:

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Irish Yobbo
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PostPosted: Mon Jan 10, 2011 8:04 pm 
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jb007 wrote:
Irish Yobbo wrote:
Yep, the mixture nut changes the mixture throughout the rev range.

The idle screw changes the amount of mixture allowed through at idle - changing the idle screw won't affect the rest of the range.

Correction; The idle screw adjusts the idle speed, not the mixture. Only the mixture nut changes the mixture. :roll:


That's why I said the amount of mixture. More air/fuel mixture in at idle = more idle speed.

Sorry for the confusion.
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jb007
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PostPosted: Tue Jan 11, 2011 8:56 am 
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Irish Yobbo wrote:
jb007 wrote:
Irish Yobbo wrote:
Yep, the mixture nut changes the mixture throughout the rev range.

The idle screw changes the amount of mixture allowed through at idle - changing the idle screw won't affect the rest of the range.

Correction; The idle screw adjusts the idle speed, not the mixture. Only the mixture nut changes the mixture. :roll:


That's why I said the amount of mixture. More air/fuel mixture in at idle = more idle speed.

Sorry for the confusion.


I'm easily confused. :? :? :? :? :? Sorry, you were right. 8)

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