Mini PD Oiler fitted and chain adjusted regularly. Both sprockets removed were in nearly new condition with no signs or wear. They were replaced based on the feedback here and to give me peace of mind. Oiler reservoir was 50% full when the incident occurred. My oiler has been known to oil many things including the back tyre at times but was functioning correctly and the chain had sufficient lube all round.
The chain break itself looks odd to me as it was exceptionally clean and could be held together without any missing pieces. No evident indications of pressure, twist or strain and all parts of the link moved freely. There is no sign of any other damage in any other location indication wear.
I can't say exactly when the chain was last cleaned but suspect it was not much more than 200-300 miles prior to failing. I have to admit, Tigerman and myself had a very moist trip out recently of about 180 of those miles prior to my 4 mile round trip to work on the day the the link failed.
The one factor that changed was, this was the first ever trip my Mrs has had on the bike. I had left the car at work the previous day to go to pub so she had to come into town to collect it the next day. The chain failed after I had dropped her off but maybe I need to tell her to lose some weight as the initial strain was all too much?
I bow down to your greater experience and knowledge but I'm not so sure its as simple as you suggest.
I'm also not offended by your posts
