Originally Posted by
hobkirk
I am pretty sure that the brain takes 30-60 seconds before it "stores" info. So a concussion* seems a lot more probable than a blackout or seizure. I've never had either. I don't think a squirrel would do it on a straight road - I know I've ridden over chipmunks and I think I've run over a squirrel. I weigh 230!
A concussion would be the most probable cause for a short-term memory lapse.
The question remains on how your wheel apparently flipped sideways and you flew over the bars.
With 1 or 2 hands on the bars, that doesn't just happen. Road debris? Pavement Cracks? Storm grate? If there was no other obvious cause, then one has to wonder if something happened with the rider before the crash.
The witness might help, but it probably all happened so fast that they might not be very reliable.
I will say that when my front wheel flipped sideways (zero hands) years ago, it trashed my rim, and I had to walk that mile back home. But, wheels are stronger now.
Have you done a careful inspection of the bike looking for a front wheel out of true, or signs of debris impacting the spokes or back of the fork?