Following on from my recent unexplained crash......
I had only riden about 1k when I went to make a turn that I have done many times before. Perhaps a little fast, perhaps not concentrating as much as I should, the front wheel went from under me and I hit the road big-time. Unfortunately I hit the road and didn't slide. I have very little grazing to show for the crash, only a fractured femur and another crack near the hip joint....
I think I have now discovered the reason. I have a long serving Michelin ProRacer tyre on my front wheel (>10,000 k's) which I had been considering I should change, but as it had never had a flat, never did. The other day I inspected my bike carefully for the first time since the stack, and discovered that the two bands of rubber that sit on either side of the very middle portion of my front tyre are like hard, polished rubber...they are very very firm and very slippery.....to the degree that I can easily imagine them losing grip when cornering on a smooth surface (especially painted road markings). I had not noticed this of the tyre previously, and can only imagine that the surface temperatures at this years AAC (it was rather hot, in case you've not heard) had somehow altered the condition of my aging tyre. I'm happier now I have found a reasonable reason for the crash......now only 5 weeks and 1 tyre away from riding (carefully!) again.
Pat