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Forums: Public Access
Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
piston failure
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<blockquote data-quote="nkt267" data-source="post: 23728" data-attributes="member: 245"><p>6 miles from home after a 100 mile round trip 2 up on the Comet this happened.</p><p><a href="http://www.vincentownersclub.co.uk/photos/showphoto.php/photo/8023/title/piston-rim-failure/cat/807" target="_blank">http://www.vincentownersclub.co.uk/photos/showphoto.php/photo/8023/title/piston-rim-failure/cat/807</a></p><p>The barrel shows corresponding marks on the timing side only, the drive side of the barrel is unmarked. Unfortunately I cannot get a decent photo of the barrel.</p><p>Does this look like detonation? I have never had a piston fail before, tell a lie I dropped the skirt off the piston on my B33 when I was 19.</p><p>Could this be due to the big end winding across to the timing side?</p><p>The plug I had in was slightly colder than the one I normally use, could this be a factor.</p><p>Any ideas on this subject welcome, even if it may be down to the nut that holds the handlebars<img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite9" alt=":eek:" title="Eek! :eek:" loading="lazy" data-shortname=":eek:" />..John</p></blockquote><p></p>
[QUOTE="nkt267, post: 23728, member: 245"] 6 miles from home after a 100 mile round trip 2 up on the Comet this happened. [url]http://www.vincentownersclub.co.uk/photos/showphoto.php/photo/8023/title/piston-rim-failure/cat/807[/url] The barrel shows corresponding marks on the timing side only, the drive side of the barrel is unmarked. Unfortunately I cannot get a decent photo of the barrel. Does this look like detonation? I have never had a piston fail before, tell a lie I dropped the skirt off the piston on my B33 when I was 19. Could this be due to the big end winding across to the timing side? The plug I had in was slightly colder than the one I normally use, could this be a factor. Any ideas on this subject welcome, even if it may be down to the nut that holds the handlebars:o..John [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
piston failure
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