# Simple question - Page 4

Posted by Vaughn on February 5, 2012, 5:29 pm

On 2/5/2012 7:16 AM, Brian Gaff wrote:

In my (brief) experience, about 50 watts is the most power a non-athlete
could hope to generate for any length of time on a peddle generator.  As
an old guy in only average shape, I have no problem peddling at 14mph
for an hour at a time, which probably comes to about 50 watts output.
The difference is, I'm doing it out in a breeze.  On a stationary bike
you will likely need a fan to keep you cool while you are peddling.
Guess how much power that will take?

Now do the math!  At 50 watts, it would take you 20 hours to generate
one kilowatt-hour, or about 15 cents worth of power.  As a further brain
exercise, figure out how many hours you would need to peddle to pay for

Now you know why peddle-powered generators aren't common.

Vaughn

Posted by Jim Wilkins on February 5, 2012, 5:48 pm

One of my maybe-someday projects is a treadle generator, like an old sewing
machine, that would sit under the computer desk and charge the laptop
battery.

jsw

Posted by Vaughn on February 5, 2012, 9:43 pm
On 2/5/2012 12:48 PM, Jim Wilkins wrote:

While that would be fun to build and a great conversation piece, a PV
charger would likely be much more practical.

Vaughn

Posted by Jim Wilkins on February 5, 2012, 10:16 pm

I already have the "45 Watt" HF kit, and usd it to run the TV and laptop and
charge the cell phone during our weeklong October power outage.

jsw

Posted by Mho on February 8, 2012, 2:57 am
Stop peddling and your monitor goes blank. My guess is you would lose about
30 pounds in a year chatting.

-----------

I already have the "45 Watt" HF kit, and usd it to run the TV and laptop and
charge the cell phone during our weeklong October power outage.

jsw

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• Subject
• Author
• Date
 Re: Simple question Jim Wilkins 02-05-2012
 Re: Simple question Brian Gaff 03-15-2012
 Re: Simple question Daniel who want... 03-17-2012
 Re: Simple question Jim Wilkins 03-18-2012
 Re: Simple question Winston 03-18-2012
 Re: Simple question Jim Wilkins 03-18-2012
 Re: Simple question Winston 03-18-2012
 Re: Simple question Jim Wilkins 03-18-2012
 Re: Simple question Winston 03-18-2012
 Re: Simple question Winston 03-19-2012
 Re: Simple question Daniel who want... 03-19-2012
 Re: Simple question Stephen Wolsten... 02-05-2012
 Re: Simple question Vaughn 02-05-2012
 Re: Simple question Jim Wilkins 02-05-2012
 Re: Simple question Vaughn 02-05-2012
 Re: Simple question Jim Wilkins 02-05-2012
 Re: Simple question Brian Gaff 03-15-2012
 Re: Simple question Brian Gaff 03-15-2012
 Re: Simple question Brian Gaff 03-15-2012
 Re: Simple question Jim Wilkins 03-15-2012
 Re: Simple question Brian Gaff 03-15-2012