Batteryless bicycle safety lights. (New Generation) - Page 2 - Cycling Mob: Road Cycling, Mountain Biking and More

01-05-2005, 09:16 AM

Looking at the diagram of the generator, it appears that a magnet on the
spokes sweeps over a "tumbling magnet", which, in turn, generates current in
a surrounding coil. Why didn't the designer simply let the field from the
spoke magnet do the generating?

Another thought: Couldn't a cyclometer be integrated into this setup, since
it operates off of wheel rotation? The front flashing light and cyclometer
display could be combined.

01-05-2005, 09:16 AM

Looking at the diagram of the generator, it appears that a magnet on the
spokes sweeps over a "tumbling magnet", which, in turn, generates current in
a surrounding coil. Why didn't the designer simply let the field from the
spoke magnet do the generating?

Another thought: Couldn't a cyclometer be integrated into this setup, since
it operates off of wheel rotation? The front flashing light and cyclometer
display could be combined.

01-05-2005, 09:16 AM

Looking at the diagram of the generator, it appears that a magnet on the
spokes sweeps over a "tumbling magnet", which, in turn, generates current in
a surrounding coil. Why didn't the designer simply let the field from the
spoke magnet do the generating?

Another thought: Couldn't a cyclometer be integrated into this setup, since
it operates off of wheel rotation? The front flashing light and cyclometer
display could be combined.

01-05-2005, 12:10 PM

"Leo Lichtman" <[Only registered and activated users can see links. ].net> wrote:

> Looking at the diagram of the generator, it appears that a magnet
> on the spokes sweeps over a "tumbling magnet", which, in turn,
> generates current in a surrounding coil. Why didn't the designer
> simply let the field from the spoke magnet do the generating?

If the magnet on the spoke is passing slowly it won't generate much
current. But it will cause the tumbling magnet to flip rapidly,
generating a current pulse. During slow rotation it stores energy in
the field between the two magnets, then releases it rapidly when the
magnet flips. A clever idea.

> Another thought: Couldn't a cyclometer be integrated into this
> setup, since it operates off of wheel rotation? The front
> flashing light and cyclometer display could be combined.

As long as you don't mind the clatter of the magnet flipping around.

--
Ray Heindl
(remove the Xs to reply to: [Only registered and activated users can see links. ])

01-05-2005, 12:10 PM

"Leo Lichtman" <[Only registered and activated users can see links. ].net> wrote:

> Looking at the diagram of the generator, it appears that a magnet
> on the spokes sweeps over a "tumbling magnet", which, in turn,
> generates current in a surrounding coil. Why didn't the designer
> simply let the field from the spoke magnet do the generating?

If the magnet on the spoke is passing slowly it won't generate much
current. But it will cause the tumbling magnet to flip rapidly,
generating a current pulse. During slow rotation it stores energy in
the field between the two magnets, then releases it rapidly when the
magnet flips. A clever idea.

> Another thought: Couldn't a cyclometer be integrated into this
> setup, since it operates off of wheel rotation? The front
> flashing light and cyclometer display could be combined.

As long as you don't mind the clatter of the magnet flipping around.

--
Ray Heindl
(remove the Xs to reply to: [Only registered and activated users can see links. ])

01-05-2005, 12:10 PM

"Leo Lichtman" <[Only registered and activated users can see links. ].net> wrote:

> Looking at the diagram of the generator, it appears that a magnet
> on the spokes sweeps over a "tumbling magnet", which, in turn,
> generates current in a surrounding coil. Why didn't the designer
> simply let the field from the spoke magnet do the generating?

If the magnet on the spoke is passing slowly it won't generate much
current. But it will cause the tumbling magnet to flip rapidly,
generating a current pulse. During slow rotation it stores energy in
the field between the two magnets, then releases it rapidly when the
magnet flips. A clever idea.

> Another thought: Couldn't a cyclometer be integrated into this
> setup, since it operates off of wheel rotation? The front
> flashing light and cyclometer display could be combined.

As long as you don't mind the clatter of the magnet flipping around.

--
Ray Heindl
(remove the Xs to reply to: [Only registered and activated users can see links. ])

01-05-2005, 12:10 PM

"Leo Lichtman" <[Only registered and activated users can see links. ].net> wrote:

> Looking at the diagram of the generator, it appears that a magnet
> on the spokes sweeps over a "tumbling magnet", which, in turn,
> generates current in a surrounding coil. Why didn't the designer
> simply let the field from the spoke magnet do the generating?

If the magnet on the spoke is passing slowly it won't generate much
current. But it will cause the tumbling magnet to flip rapidly,
generating a current pulse. During slow rotation it stores energy in
the field between the two magnets, then releases it rapidly when the
magnet flips. A clever idea.

> Another thought: Couldn't a cyclometer be integrated into this
> setup, since it operates off of wheel rotation? The front
> flashing light and cyclometer display could be combined.

As long as you don't mind the clatter of the magnet flipping around.

--
Ray Heindl
(remove the Xs to reply to: [Only registered and activated users can see links. ])

01-05-2005, 01:06 PM

Ray Heindl wrote:

>"Leo Lichtman" <[Only registered and activated users can see links. ].net> wrote:
>
>
>>Looking at the diagram of the generator, it appears that a magnet
>>on the spokes sweeps over a "tumbling magnet", which, in turn,
>>generates current in a surrounding coil. Why didn't the designer
>>simply let the field from the spoke magnet do the generating?
>>
>>
>
>If the magnet on the spoke is passing slowly it won't generate much
>current. But it will cause the tumbling magnet to flip rapidly,
>generating a current pulse. During slow rotation it stores energy in
>the field between the two magnets, then releases it rapidly when the
>magnet flips. A clever idea.
>
>

for slower speeds, if you have more than one spoke magnets, for each
rotation of the wheel, there will more flip-overs of the magnet inside
the generator.

+ravi

01-05-2005, 01:06 PM

Ray Heindl wrote:

>"Leo Lichtman" <[Only registered and activated users can see links. ].net> wrote:
>
>
>>Looking at the diagram of the generator, it appears that a magnet
>>on the spokes sweeps over a "tumbling magnet", which, in turn,
>>generates current in a surrounding coil. Why didn't the designer
>>simply let the field from the spoke magnet do the generating?
>>
>>
>
>If the magnet on the spoke is passing slowly it won't generate much
>current. But it will cause the tumbling magnet to flip rapidly,
>generating a current pulse. During slow rotation it stores energy in
>the field between the two magnets, then releases it rapidly when the
>magnet flips. A clever idea.
>
>

for slower speeds, if you have more than one spoke magnets, for each
rotation of the wheel, there will more flip-overs of the magnet inside
the generator.

+ravi

01-05-2005, 01:06 PM

Ray Heindl wrote:

>"Leo Lichtman" <[Only registered and activated users can see links. ].net> wrote:
>
>
>>Looking at the diagram of the generator, it appears that a magnet
>>on the spokes sweeps over a "tumbling magnet", which, in turn,
>>generates current in a surrounding coil. Why didn't the designer
>>simply let the field from the spoke magnet do the generating?
>>
>>
>
>If the magnet on the spoke is passing slowly it won't generate much
>current. But it will cause the tumbling magnet to flip rapidly,
>generating a current pulse. During slow rotation it stores energy in
>the field between the two magnets, then releases it rapidly when the
>magnet flips. A clever idea.
>
>

for slower speeds, if you have more than one spoke magnets, for each
rotation of the wheel, there will more flip-overs of the magnet inside
the generator.

+ravi