I had set up the sprinkler to water the garden this morning. I went outside and turned on the water, returned to the house, and it promptly started to rain. We are expecting sproadic showers today so I just left the sprinkler on for the usual time and will move it to the other half of the garden soon.
I also planned on taking the bike out for a ride for the final test of the GPS vs Sigma bike speedometer. Calibrating is an inexact science. Sigma provides a formula you can use if the tire settings are not in the instruction booklet. The initial setting determined by the formula varied from my GPS by over a half mile at 20 miles. The GPS is totally accurate as I have tested it many times against measured mile markers on bike paths. After several adjustments, I finally 2090 yesterday and at the end of the ride the readings were 20.73 for the GPS and 20.88 for the Sigma. One more slight adjustment to 2088 and now ready for the test, except the rain has put a damper on said test until later or tomorrow.




