h a l f b a k e r y
Bone to the bad.
add, search, annotate, link, view, overview, recent, by name, random
news, help, about, links, report a problem
or get an account
Perpetual Motion Bike is an ordinary bicycle which has its rear driving wheel replaced with one that exhibits the characteristics of a mechanical perpetual motion device.
To be specific, the replacement wheel has a series of ball bearings moving along channels between its spokes, in the exact same
manner as that of the famous Leonardo da Vinci overbalanced wheel arrangement. (shown in the links)
The apparatus can be switched on or off at the flick of a switch, which causes magnets to retain the ball bearings along the inner edge of the wheel's rim.
Perpetual Motion Bike Wheel is at its most effective when the cyclist stops pedaling, and simply allows the ball bearings to carry on with the famous action which once convinced people that perpetual motion had been achieved.
Inevitable delux version features ball bearings with leds.
[xenzag, Dec 30 2015]
[xenzag, Dec 30 2015]
bicycle with speed governor
[xaviergisz, Dec 31 2015]
||Centrifugal force means this is only interesting at low speeds.
||I'm sure with some adjustments the effect can be manifest
at all speeds. Over to the technicians. I only do the ideas
||There is significant space inside the region defined by
the spreading spokes of an ordinary bicycle wheel. The
space is shaped something like a sharp-edged disk, fairly
thick in the middle (with a big hole through the middle
of the disk). You could take a bike wheel apart and
insert something representing the essence of this Idea in
that space, such that anyone looking at it (after wheel
is re-assembled) might think (at least when the bike is
coasting) that a perpetual motion machine has been
perfected. I must agree with [pocmloc], though,
regarding centrifugal effects interfering with this Idea's
||So have the perpetuum mobile bit suspended in the inter-spoke toroidal space, and geared to the wheel rotation such that it rotates slowly while the wheel rotates fast.
||/Over to the technicians./
||Those bumbling technicians are the ones who never get the magnets placed right in the _real_ perpetual motion machines!
||I wonder if the moving balls might ride 2 instead of 1 rail, with the adjacent rails jiggered such that centrifugal force pulls them apart, slowing the motion outward of the balls.
||You're all missing the real point.... No matter what is
placed within the confines of a bicycle wheel, in the form
of moving weights, it can never actually assist or retard the
forward motion, so it may as well be something that looks
like it could.
||There is no point to anything.
||Happy arbitrary calendar increment, Fulcrum!