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General Chat (Vincent Related)
A STRANGE THING..
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<blockquote data-quote="Steve Morris" data-source="post: 98445" data-attributes="member: 3648"><p>Thanks Martyn, perfect explanation!</p><p></p><p>The more i work on the Vincent the more i am thinking how over engineered the bike is! I can also see why the bike was so expensive in its day...</p><p></p><p>I have another problem....</p><p></p><p>The bike is running well like i said, but....</p><p></p><p>Carburation. I set the carburettor up using the method i read in the Vincent.com website. </p><p></p><p>1. Standard pilot jet settings. i.e. screw pilot screw in until lightly seated then screw out 11/4 turns. </p><p>2. Then run the engine and adjust the throttle stop until a good idle is achieved, then adjust the pilot until the highest tick over is achieved, then repeat.</p><p></p><p>Problem i have is this. When i do this, all seems to work as per the instructions, but when i rev the bike instead of the engine returning to normal idle, it hangs up quite high? It is almost like the slider is sticking? So, i slacken the throttle stop nut and lower the slide, then adjust the pilot again etc, etc. I just cannot seem to stop the idle hanging up? </p><p></p><p>I stripped the carb last night (Amal 229 i think) and it was as clean as a whistle, then carefully put it back together, still the same.</p><p></p><p>Question is;</p><p></p><p>When setting a carburettor up from scratch, how do you set the throttle stop? My thoughts are it should be closed and the engine is breathing/fuelling through the pilot?</p><p></p><p>Any thoughts please!</p><p></p><p>Best regards,</p><p></p><p>Steve.</p></blockquote><p></p>
[QUOTE="Steve Morris, post: 98445, member: 3648"] Thanks Martyn, perfect explanation! The more i work on the Vincent the more i am thinking how over engineered the bike is! I can also see why the bike was so expensive in its day... I have another problem.... The bike is running well like i said, but.... Carburation. I set the carburettor up using the method i read in the Vincent.com website. 1. Standard pilot jet settings. i.e. screw pilot screw in until lightly seated then screw out 11/4 turns. 2. Then run the engine and adjust the throttle stop until a good idle is achieved, then adjust the pilot until the highest tick over is achieved, then repeat. Problem i have is this. When i do this, all seems to work as per the instructions, but when i rev the bike instead of the engine returning to normal idle, it hangs up quite high? It is almost like the slider is sticking? So, i slacken the throttle stop nut and lower the slide, then adjust the pilot again etc, etc. I just cannot seem to stop the idle hanging up? I stripped the carb last night (Amal 229 i think) and it was as clean as a whistle, then carefully put it back together, still the same. Question is; When setting a carburettor up from scratch, how do you set the throttle stop? My thoughts are it should be closed and the engine is breathing/fuelling through the pilot? Any thoughts please! Best regards, Steve. [/QUOTE]
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A STRANGE THING..
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