18 Sep 2009 @ 8:14 PM 
 

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The Mendo Zephyr – a single-rail railbike

 

Well, we’ve assembled and completed testing the first prototype of the magnetically stabilized “Mendo Zephyr”. This is our solution to the design challenge of a light weight, single rail adapter for cycle-powered transport on the surface of existing rail. In its present configuration it weighs about 10 pounds and its overall deployed length of 78″ collapses to about 38″ and fits nicely on the rear rack of a bike. There are three quick release attachment points and it assembles to the bike in less than ten minutes.

the various unique aspects of this design as listed in the paragraph above are claimed as the defining characteristics of “the invention” shown here. This information is provided for comment and review, but commercial rights are expressly claimed under US and international copyright and patent law by the author of this document as of the date of publication.

Freestanding roll test 1 Freestanding roll test 2 Rail ski bike board Under construction 1 Grinnin' like the Devil

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Categories: Bicycle Touring Posted By: Cyclo-monger
Last Edit: 18 Sep 2009 @ 08 32 PM

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  1. Isochroma says:
    March 19, 2010 at 2:39 pm

    I’d like you to build me one!

    First though: tell me about how stable it is, and how much it’s been tested.

    What are its failure modes, and how much friction loss is there? Are the wheels of the type used in inline rollerskates? Do the wheels have bearings?

    What is the highest tested velocity, and are there problems with self-vibration at high velocity?

    I have a standard 10-speed with 700×28c wheels; will it mount to my bike?

    Then, how much will it cost for you to build me one?

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