Subject:
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Re: building a bicycle -- can it be done?
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Newsgroups:
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lugnet.technic
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Date:
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Sat, 2 Sep 2000 02:50:33 GMT
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Viewed:
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1681 times
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Very nice solution. But we're building a bicycle, not a car!!
Differentials are ungodly bulky things, but for technical accuracy, they
might do the trick!! Have to upgrade the elephant cyclist to a hippo or
whale now! ;-)
Cheers ...
Geoffrey Hyde
Grant Elliott <KeysDezes@hotmail.com> wrote in message
news:OE5wY6YHkidcDjoYAPN000003b1@hotmail.com...
> I have a solution for the coasting problem. This method allows the wheel • to
> move without the pedals moving and even allows the wheels to move forward • if
> the pedals are moving backwards.
>
> The pedals drive one axle of a differential. The other axle of the
> differential equiped with a ratchet so that it can only rotate in the
> forward direction (the same direction as the axle coming in on the other
> side). The body of the differential drives the wheel.
>
> The result of all this is that when the pedals move forward, the wheel • must
> turn. When the pedals move backward, the alternative axle (the one with • the
> ratchet) will move leaving the wheel free to do as it pleases (the excess
> speed will also be transfered to the alternative axle). The same thing
> happens if the pedals do not move.
>
> That probably sounds confusing. Trust me. Build it. You'd be surprised
> what you can come up with using those differentials....
>
> Enjoy.
>
> Grant Elliott
>
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Message has 1 Reply:
 | | Re: building a bicycle -- can it be done?
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| (...) Well, I have to agree-- the differential is an elegant solution, but a little more complex than necessary... a single ratchet does the trick by itself without really needing the differential. I'd say that there's also the size issue too, but (...) (26 years ago, 2-Sep-00, to lugnet.technic)
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Message is in Reply To:
| | Re: building a bicycle -- can it be done?
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| I have a solution for the coasting problem. This method allows the wheel to move without the pedals moving and even allows the wheels to move forward if the pedals are moving backwards. The pedals drive one axle of a differential. The other axle of (...) (26 years ago, 2-Sep-00, to lugnet.technic)
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