Littleton/Westford

It was a bee-yoo-tiful day so I took the first long(ish) ride of the season. How long? It turns out, I’m not quite sure. I knew this was going to happen. Sharing a cyclometer between two bikes with different tire sizes is asking for trouble. Bike I is the road bike, bike II is the SS. The last bike I rode was the SS, so the cyclometer was set to II. So I changed it, but I must have hit the button twice because when I got home to log the miles, it was still selected to II. Still, the difference isn’t great so it can be off by much. Bike I is set to 1325,and bike II is set to 1350. This, I think, is the circumference in some unit of measure. Bike I is 700×23 (23-622), bike II is 700×32 (32-622).

So, here’s a word problem. If the cyclometer says I went 67.34 miles with a setting of 1350, how far did I actually go if the cyclometer should have been set to 1325? I think the total must be slightly less since each rotation of the wheel would be clocking 25 somethings too many. So you’d have to subtract 25 times however many wheel rotations there were, but I’ll leave that as an exercise to the reader.

Anyway, it was a fantastic day. A bit cool to start, but really nice. Sunny and windy. It must have gotten close to 60. Lots of bikes out on the road. Many of them said this was their first ride of the season, so I guess I’m doing better than a lot. Ran into the x-status Fondriest guy I met a while back at the Bedford end of the Minuteman. Talked with a recumbment guy at the Carlisle deli where I stopped for a sandwhich. I basically did the reverse Kimballs loop. Picked up the Minuteman in Lexington Center. It was packed. Jam packed. Made for some tricky riding trying to avoid the inline-skates-for-Christmas crowd and the little kids wandering all over the path. Still, I’d rather have them do that than sit home watching tv.

It sure was nice getting out for a good long ride. I’m going to sleep well tonight.

2 Responses to “Littleton/Westford”

  1. Greg! Says:

    66.09 miles?
    (67.34/1350)*1325=66.09
    Maybe I’m over-simplifying, but I think that’s right.

  2. todd Says:

    Ah, so less than 1/2 mile. I think we can call that a scratch.

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