6 miles from home after a 100 mile round trip 2 up on the Comet this happened.
http://www.vincentownersclub.co.uk/photos/showphoto.php/photo/8023/title/piston-rim-failure/cat/807
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..John
http://www.vincentownersclub.co.uk/photos/showphoto.php/photo/8023/title/piston-rim-failure/cat/807
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..John