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Bicycle Computer

A cheap way to get Real Speed

The best choice seem to be the Sigma bike computers if you can find one that is rated high enough for speed (check the manuals). A Vespa wheel is ~1.36 metres in circumference. Below is the info you are after (this will vary with model).

sigma_wheel_speeed.png

Install instructions to come...

Typical Tyre Sizes

Sava MC31 = 1360mm

Sava MC20 = 1335mm

Heindau racer = 1314mm

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