Old School Bicycle Bike Cycle Computer Speedometer

When I last had a speedo like this (45years ago) it was always right because there was no comparison. This time however I had an old Cateye for comparison. I can report that it does not indicate any speed until about 8kph. It then under reads up until 20kph. From here to 30kph it is quite accurate. Above 30 it starts to over read such that by 40kph it is indicating 50. Looks like my old speed records may have been somewhat overestimated. You may also need to consider if the drive unit will fit into your forks. Despite all this it is very good value for money, for those in particular who fondly remember the olden days.
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