Maintenance-Free Drivetrain

The swiss bicycle manufacturer KATZ-Bikes has one objective: Maintenance Free Bicycles!

Here is the first concept for a maintenance free MTB.

The drivetrain consists out of a Rohloff Speedhub in combination with a completely capsuled chain drivetrain. The rear wheel can be removed without touching the chain. This is realized by a special couppling between the internal geared hub and the rear pinion gear. The rear pinion gear stay on the bike and is a part of the drivetrain.

The efficiency is pushed by the following details to a high level:

- capsuled drivetrain

- the chain has a wide overlapping on the chain wheel and the rear pinion by using to little guiding pinions. These two guiding pinions are on the untensioned side of the drivetrain with a low influence on the efficiency. The tensioned upper chainline has a straight effective direction!

- the chain will be tensioned by the two guiding pinions (like a derailleur).


There is a whole bundle of maintenance free details on this bike concerning other parts. A price is not defined but the bikes will be available next spring. Phil´s veloblog is also discussing the benefits of this concept.

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  1. chriswiggins

    Wow. I have just recently discovered the Rohloff and am an instant fan. This encapsulated chain in combination seems brilliant to me.

    See my thoughts and some pics here, from an ex-pure roadie who started mountain biking again BECAUSE I craved a simpler drivetrain:

    http://beautifulbokeh.typepad.com/beautiful_bokeh/2008/02/simplicity-from.html

    http://beautifulbokeh.typepad.com/beautiful_bokeh/2008/02/rohloff-progres.html

  2. You’ve made some good points there. I looked on the internet for more information about the issue and found most people will go along with your views on this website.
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  1. 1 Katz Reif, randonneur suisse en tout-intégré, Weelz.fr Le 1er Magazine Web du Vélo Urbain, Vélo de ville

    [...] plus sur cette transmission assez révolutionnaire, vous pouvez aller voir là (de) ou bien encore ici [...]




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