Centrifugal Tachometer

A tachometer based on centrifugal governor.

I have planed to create a mechanical tachometer for many months, but the problem was the mechanical principle. The principle is to transform the speed in position, in order to have one position for each speed and with analogical movement. So I have searched a device which give a fixed position for a fixed speed and I have through to the centrifugal governor. Indeed, the position of the two masses gives a representation of the speed thanks to the centrifugal force. Then I have coupled the device which the counter and it has be done.

The building instructions are available. You can watch them by browsing my website or

Download the Zip Archive of the Tachometer’s instructions, 5 mo, ZIP.

Designed in 2011.

(4) Comments

    Salut Nico,

    Extra ton tachimètre…comme toutes tes créations.
    Pour établir un contact, je me suis inscrit à SeTechnic sous “UNIMOG 25”. J’aimerais échanger encore plus avec toi ! rdv sur SeTechnic ou à Rosheim:j’y serai le vendredi et vraisemblablement le dimanche.

    Amazing!!! just perfect!…thats what I like about your creations: they work as they should! I see you put effort on functionality, design and performance(something many builders forget) congratulations! great work!

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