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12-07-24, 06:21 AM | #1 |
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Random carb question
Someone on the US forum has a curvy that won't idle below 4k rpm and it got me thinking (a rare occurrence). If you wind the throttle stop adjuster to give a 4k rpm idle is it still running on the carb's pilot circuit?
I didn't think it would be but I was visualising a non-CV carb where the throttle stop would lift the slides and thus pull the needle higher. On a CV carb at 4k rpm with no load, the vacuum would be high so would that lift the slides/needle in the same way?
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2016 SV650AL7 2023 GSX-8S |
13-07-24, 11:31 AM | #2 |
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Re: Random carb question
I think that even on a non-CV carb, that at 4k rpm, the venturi effect would be enough to draw fuel from the needle/needle jet clearance; surely, they must have blocked pilot jets?
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14-07-24, 11:15 AM | #3 |
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Re: Random carb question
Here's a really good video explaining how CV carbs work,
https://www.youtube.com/watch?v=IBFq9nHVmks&t=1s
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"Stultus est sicut stultus facit" Last edited by R1ffR4ff; 14-07-24 at 05:05 PM. |
14-07-24, 04:14 PM | #4 |
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Re: Random carb question
Video not available anymore
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14-07-24, 05:06 PM | #5 |
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Re: Random carb question
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14-07-24, 07:45 PM | #6 |
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Re: Random carb question
Thanks R1FF
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