Does anyone know how I can make a small motion powered elect

K

katrina

Guest
Hi all, I want to hook up a motion powered generator to my stationary
bike that will supply electricity to my television ? How would I go
about this ? thanks.. katrina.traviesa69@gmail.com
 
katrina wrote:
Hi all, I want to hook up a motion powered generator to my stationary
bike that will supply electricity to my television ? How would I go
about this ? thanks.. katrina.traviesa69@gmail.com
Put the power plug in your mouth and start pedaling... :)
Click to expand...
 
katrina wrote:
Hi all, I want to hook up a motion powered generator to my stationary
bike that will supply electricity to my television ? How would I go
about this ? thanks.. katrina.traviesa69@gmail.com
Click to expand...
Most televisions require more power than most people can
generate on a bicycle for more than a few minutes. You're
not the first - and you won't be the last - to think of the
idea, but the reality is that it is not really practical.

Ed
 
"ehsjr" <ehsjr@NOSPAMverizon.net> wrote in message
news:f8PSk.1090$mi4.309@nwrddc02.gnilink.net...
katrina wrote:
Hi all, I want to hook up a motion powered generator to my stationary
bike that will supply electricity to my television ? How would I go
about this ? thanks.. katrina.traviesa69@gmail.com

Most televisions require more power than most people can
generate on a bicycle for more than a few minutes. You're
not the first - and you won't be the last - to think of the
idea, but the reality is that it is not really practical.

Ed
Click to expand...
There was a guy who, during the Berkeley student protests in the 60s, came
up with a great idea, which was a stationary bicycle that would generate the
power for an audio system. Thus, in order to talk on the thing, you would
need to convince somebody else to peddle for you, thereby eliminating the
truly odd (of which there is an ample supply in Berkeley).

I bet that most people could easily put out 50 watts. I hear Lance Armstrong
could reliably put out 500W for long periods of time during his heyday.
Seems like you could find a TV receiver that would work with 50W.

Regards,
Bob Monsen
 
"Bob Monsen" <robertmonsen@sbcglobal.net> wrote in message
news:3%PSk.8191$YU2.175@nlpi066.nbdc.sbc.com...
There was a guy who, during the Berkeley student protests in the 60s, came
up with a great idea, which was a stationary bicycle that would generate
the power for an audio system. Thus, in order to talk on the thing, you
would need to convince somebody else to peddle for you, thereby
eliminating the truly odd (of which there is an ample supply in Berkeley).

I bet that most people could easily put out 50 watts. I hear Lance
Armstrong could reliably put out 500W for long periods of time during his
heyday. Seems like you could find a TV receiver that would work with 50W.

Regards,
Bob Monsen
Click to expand...
Average basal metabolism is about 100 watts. Skeletal muscles are about 33
percent efficient.
To generate 100 watts of work, you need to generate 200 watts of heat on top
of the basal, for a total of 400 watts. This is about the limit for an adult
male in good condition for 8 hours.

For Armstrong to generate 500 watts of work, he expends 1000 watts of waste
heat for a total of 1600 watts.
He might be right, but I'd say he was not a typical adult male.
 
"katrina" <katrina.traviesa69@gmail.com> wrote in message
news:52b9a2a8-c362-43d1-9374-2e9a91b530df@x8g2000yqk.googlegroups.com...
Hi all, I want to hook up a motion powered generator to my stationary
bike that will supply electricity to my television ? How would I go
about this ? thanks.. katrina.traviesa69@gmail.com
Click to expand...
Type bicycle generator into Google. Thousands of hits.

Also, check back issues of Home Power magazine.
The author used a treadmill motor on a stationary exercise bike, he was
barely able to keep his portable TV running for 30 minutes at a time.
 
On Thu, 13 Nov 2008 01:16:01 -0600,
bw <bwegher@hotmail.com> wrote:
"Bob Monsen" <robertmonsen@sbcglobal.net> wrote in message
news:3%PSk.8191$YU2.175@nlpi066.nbdc.sbc.com...
There was a guy who, during the Berkeley student protests in the 60s, came
up with a great idea, which was a stationary bicycle that would generate
the power for an audio system. Thus, in order to talk on the thing, you
would need to convince somebody else to peddle for you, thereby
eliminating the truly odd (of which there is an ample supply in Berkeley).

I bet that most people could easily put out 50 watts. I hear Lance
Armstrong could reliably put out 500W for long periods of time during his
heyday. Seems like you could find a TV receiver that would work with 50W.

Regards,
Bob Monsen

Average basal metabolism is about 100 watts. Skeletal muscles are about 33
percent efficient.
To generate 100 watts of work, you need to generate 200 watts of heat on top
of the basal, for a total of 400 watts. This is about the limit for an adult
male in good condition for 8 hours.

For Armstrong to generate 500 watts of work, he expends 1000 watts of waste
heat for a total of 1600 watts.
He might be right, but I'd say he was not a typical adult male.

A typical goal of an interested amateur is to do "evens" (30mins) for a
Click to expand...
ten mile time trial.

This works out at about 150 watts.

Slightly more keen cyclists aim to do a 25 mile time trial in an hour
(the British record for 90+ year olds currently stands at fractionally
under the hour)

This works out at about 250W

Cat1 riders can average 30mph+ over these distances - about 450W

Cancellara rode the prolog of the London TdF in 8m50s for an average
speed of over 33mph - about 570W.

The hour record in the mid 80s was around 32mph - about 520W. It's since
gone a lot higher but the riding stance has changed.

http://www.mne.psu.edu/lamancusa/ProdDiss/Bicycle/bikecalc1.htm

http://www.cadencecycling.com/training/services/nyc/physiological/

A professional cyclist with strong sprinting skills can kick out over
1700 Watts!
(that's an instantaneous measure but if you've ever seen how many straps
they need to keep their feet attached to the pedals (they pull up as
well as push down) then this perhaps isn't so surprising)

However, it should be noted that cyclists absolutely depend on the
20mph+ air stream to keep them cool. Early tests on stationary bicycles
to attempt to measure top cyclists performances were getting obviously
completely ridiculous (very low) results. It took a while before people
realized that the cyclists were overheating. I'm a commuting cyclist in
London and mid November and I'm still riding in just a light tee-shirt
(I am now wearing long fingered gloves).

So any attempt to generate power from a person on a bicycle should
factor in the energy necessary to move enough air over the cyclist to
keep them cool.

Tim.

--
God said, "div D = rho, div B = 0, curl E = - @B/@t, curl H = J + @D/@t,"
and there was light.

http://www.woodall.me.uk/
 
On Nov 12, 1:48 pm, katrina <katrina.travies...@gmail.com> wrote:
Hi all,  I want to hook up a motion powered generator to my stationary
bike that will supply electricity to my television ?  How would I go
about this ?  thanks.. katrina.travies...@gmail.com
Click to expand...
Your idea is very good but the big question is "who will watch the t.v
as you ride the bike"
 
On Wed, 12 Nov 2008 17:48:12 -0800 (PST), katrina
<katrina.traviesa69@gmail.com> wrote:

Hi all, I want to hook up a motion powered generator to my stationary
bike that will supply electricity to my television ? How would I go
about this ? thanks.. katrina.traviesa69@gmail.com
Click to expand...
Like bw said lots of information on the web already. Its been done
already.

I disagree with the idea that a person can't reliably generate enough
power since that is pretty much up to the load. Some of these new
portable DVD players with solid state displays are very efficient.
The display is the part that eats most of the power in an ordinary
modern CRT television and that's on the order of ~100 watts.

Compact fluorescent lamps can put out the light equivalent of a small
TV with just 10-20 watts and that should be no problem pedaling
providing the energy management system is efficient.


--


----== Posted via Pronews.Com - Unlimited-Unrestricted-Secure Usenet News==----
http://www.pronews.com The #1 Newsgroup Service in the World! >100,000 Newsgroups
---= - Total Privacy via Encryption =---
 
On Thu, 13 Nov 2008 01:16:01 -0600, bw wrote:
"Bob Monsen" <robertmonsen@sbcglobal.net> wrote in message

There was a guy who, during the Berkeley student protests in the 60s,
came up with a great idea, which was a stationary bicycle that would
generate the power for an audio system. Thus, in order to talk on the
thing, you would need to convince somebody else to peddle for you,
thereby eliminating the truly odd (of which there is an ample supply in
Berkeley).

I bet that most people could easily put out 50 watts. I hear Lance
Armstrong could reliably put out 500W for long periods of time during
his heyday. Seems like you could find a TV receiver that would work with
50W.

Average basal metabolism is about 100 watts. Skeletal muscles are about 33
percent efficient.
To generate 100 watts of work, you need to generate 200 watts of heat on
top of the basal, for a total of 400 watts. This is about the limit for an
adult male in good condition for 8 hours.

For Armstrong to generate 500 watts of work, he expends 1000 watts of
waste heat for a total of 1600 watts.
He might be right, but I'd say he was not a typical adult male.
Click to expand...
Who drove the Gossamer Albatross? And does anybody know how many HP it
took?

Thanks,
Rich
 
"Rich Grise" <rich@example.net> wrote in message
news:pan.2008.11.13.21.19.59.889523@example.net...
On Thu, 13 Nov 2008 01:16:01 -0600, bw wrote:
"Bob Monsen" <robertmonsen@sbcglobal.net> wrote in message

There was a guy who, during the Berkeley student protests in the 60s,
came up with a great idea, which was a stationary bicycle that would
generate the power for an audio system. Thus, in order to talk on the
thing, you would need to convince somebody else to peddle for you,
thereby eliminating the truly odd (of which there is an ample supply in
Berkeley).

I bet that most people could easily put out 50 watts. I hear Lance
Armstrong could reliably put out 500W for long periods of time during
his heyday. Seems like you could find a TV receiver that would work with
50W.

Average basal metabolism is about 100 watts. Skeletal muscles are about
33
percent efficient.
To generate 100 watts of work, you need to generate 200 watts of heat on
top of the basal, for a total of 400 watts. This is about the limit for
an
adult male in good condition for 8 hours.

For Armstrong to generate 500 watts of work, he expends 1000 watts of
waste heat for a total of 1600 watts.
He might be right, but I'd say he was not a typical adult male.

Who drove the Gossamer Albatross? And does anybody know how many HP it
took?

Thanks,
Rich
Click to expand...

Yep...here ya go:

http://en.wikipedia.org/wiki/Gossamer_Albatross
 
"Tim Woodall" <devnull@woodall.me.uk> wrote in message
news:slrngho7ud.jnp.devnull@feynman.home.woodall.me.uk...
This works out at about 250W

Cat1 riders can average 30mph+ over these distances - about 450W

Cancellara rode the prolog of the London TdF in 8m50s for an average
speed of over 33mph - about 570W.

The hour record in the mid 80s was around 32mph - about 520W. It's since
gone a lot higher but the riding stance has changed.

http://www.mne.psu.edu/lamancusa/ProdDiss/Bicycle/bikecalc1.htm

http://www.cadencecycling.com/training/services/nyc/physiological/

A professional cyclist with strong sprinting skills can kick out over
1700 Watts!
(that's an instantaneous measure but if you've ever seen how many straps
they need to keep their feet attached to the pedals (they pull up as
well as push down) then this perhaps isn't so surprising)

However, it should be noted that cyclists absolutely depend on the
20mph+ air stream to keep them cool. Early tests on stationary bicycles
to attempt to measure top cyclists performances were getting obviously
completely ridiculous (very low) results. It took a while before people
realized that the cyclists were overheating. I'm a commuting cyclist in
London and mid November and I'm still riding in just a light tee-shirt
(I am now wearing long fingered gloves).

So any attempt to generate power from a person on a bicycle should
factor in the energy necessary to move enough air over the cyclist to
keep them cool.

Tim.
Click to expand...
nice links. I did not know the professional cyclists had reached that level.
The man-powered flights used professional cyclists. I recall now that they
designed for at least 325 watts for 3 hours.
My info was derived from dietary requirements of laborers working 8 hours
per day. Mountain climbers are also aware of their work limits in this, they
expect caloric increases of 6 to 8 times baseline.
 
On Thu, 13 Nov 2008 18:53:56 -0600, Lord Garth wrote:
"Rich Grise" <rich@example.net> wrote in message

Who drove the Gossamer Albatross? And does anybody know how many HP it
took?

Yep...here ya go:

http://en.wikipedia.org/wiki/Gossamer_Albatross
Click to expand...
Aww, that's no fun! ;-)

Thanks!
Rich
 
"Rich Grise" <rich@example.net> wrote in message
news:pan.2008.11.15.00.43.32.493398@example.net...
On Thu, 13 Nov 2008 18:53:56 -0600, Lord Garth wrote:
"Rich Grise" <rich@example.net> wrote in message

Who drove the Gossamer Albatross? And does anybody know how many HP it
took?

Yep...here ya go:

http://en.wikipedia.org/wiki/Gossamer_Albatross

Aww, that's no fun! ;-)

Thanks!
Rich
Click to expand...
Like fishing in a barrel!
 
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