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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Elephants trunk
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<blockquote data-quote="Peter Holmes" data-source="post: 29162" data-attributes="member: 302"><p>I think it was Ivan Caffrey, I have one of his beautifully made breathers but I am not entirely sure that the concept actually works as a valve, it certainly works as a breather but it also creates alarming amounts of mayonnaise, I think because the thin wall stainless steel pipe is stuck out in the cold air flow, in any event I think that the nylon ball cannot hope to flutter up and down at the required speeds to act as a true valve, for sure you can here it on tickover, it adds a rythmical percussion samba beat to the general cacophony of sound, for me it got a bit too much and I removed it. I think if you want a breather a reed valve must be the way to go as the reed will be doing exactly what it was designed to do, react open and close to very fast pulse pressure changes. I am not an engineer and may be ridiculed by some of the very clever people that belong to the club.</p></blockquote><p></p>
[QUOTE="Peter Holmes, post: 29162, member: 302"] I think it was Ivan Caffrey, I have one of his beautifully made breathers but I am not entirely sure that the concept actually works as a valve, it certainly works as a breather but it also creates alarming amounts of mayonnaise, I think because the thin wall stainless steel pipe is stuck out in the cold air flow, in any event I think that the nylon ball cannot hope to flutter up and down at the required speeds to act as a true valve, for sure you can here it on tickover, it adds a rythmical percussion samba beat to the general cacophony of sound, for me it got a bit too much and I removed it. I think if you want a breather a reed valve must be the way to go as the reed will be doing exactly what it was designed to do, react open and close to very fast pulse pressure changes. I am not an engineer and may be ridiculed by some of the very clever people that belong to the club. [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Elephants trunk
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