Had a great ride home yesterday until i got a flat. Walked the bike a mile to the LBS in 90 F / 32 C heat. Walking is MUCH hotter than riding. Came home soaked; spent the next three hours shoveling a ton or so of mulch. Utterly exhauseted. Rode the backup bike in today -- after a few miles, the rear derailleur shifter broke, leaving me with a wide-ratio 3-speed. It actually works pretty well in this configuration. The good part is that I can now ride my backup bike to the shop and leave it, rather than having to wrestle with the bike rack.

Paul