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Welcome!

Velotegra is focused on the design, development, and licensing of an innovative new bicycle hub design.

The Velotegra hub has the following objectives:

Low internal friction: A hub with improved mechanical efficiency and smoother operation.

High torque capacity: A stronger and more reliable hub, allowing use in tandem bicycles and direct-drive bicycles.

Higher gear ratios: A high ratio hub permitting a smaller chainwheel for chain-drive and the correct ratios for direct-drive.

These objectives are achieved by a bevel-planetary architecture. By employing bevel gears, the planet gears can be made much larger. This allows the teeth of the gears to be larger, increasing strength and making space for friction reducing elements such as rollers. The bevel configuration also increases the gear contact ratio, improving the smoothness of the meshing. A patent for hub has been granted in the United States (US9139254), in the United Kingdom (GB2513959), and in Canada (CA2812588).

A first prototype of the hub has been constructed – shown in the video below and installed in the bike above. Testing of the hub has begun with good results. It has four speeds with the following gear ratios: 1:1.00, 1:1.89, 1:2.57, and 1:3.27.

 

 

Preliminary design work on a second prototype is underway.

An interesting application of the Velotegra hub is the direct-drive recumbent bicycle (shown above). In recognition of this, the website also includes pages describing the advantages and specific design requirements of the direct-drive recumbent bicycle.

If you have any comments or would like further information, please do not hesitate to send a message in the Contact page.

- Jeremy Garnet, P. Eng. (Velotegra Inc.)