My trusty Garmin GSC 10 Speed/Cadence sensor gave up on me the other day. I think this may be the original sensor that came with my Garmin Edge 500, and I know for a fact that my Edge 500 is the single oldest piece of cycling gear that I still own. I have data on Garmin Connect going back to August 21, 1999. Therefore I am not entirely sad nor upset that my sensor went out. It has served me well for a very long time. It has survived more bikes then I can remember, inadvertently tracked a couple of Amtrak Capitol Corridor trips, managed to NOT be on any of the bikes that got stolen, and held it together through more than a few crashes.
What did surprise me however was what seems to be a change in my overall average speeds since the GSC went out of service. That change, of course, was down. Keep reading →