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Go Back   SailNet Community > Out There > Cruising & Liveaboard Forum > Human-Powered electricity generating..?
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Thread: Human-Powered electricity generating..? Reply to Thread
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Topic Review (Newest First)
07-17-2012 11:53 PM
davidpm
Re: Human-Powered electricity generating..?

I was curious enough to look it up.
Propulsionmarine.com says that their Catalina 30 draws 1.2 KW at 4 knots.

Bicycle Pedal Power Generator FAQ Frequently Asked Questions
This site puts the bike output at about 100 watts

So it seems like it would work fine.
You peddle every morning before work and every evening after work for an hour Mon to Fri and get 10 hours in then by Sat you have built up enough battery power to motor about 25 min to the outer harbor and back.

Should work fine.
07-14-2012 08:14 PM
deniseO30
Re: Human-Powered electricity generating..?

07-14-2012 05:15 AM
DavidB.UK
Re: Human-Powered electricity generating..?

Quote:
Originally Posted by hboy View Post
...So assuming 200 Watts after a while of getting in to shape, and 2 hours/day, and 75% efficiency, a good working number would be something like 300 Watt-hours a day for one's 2 hours of exercise.
Wow, that's quite something!

So with a couple of fixed flexible solar panels, a decent sized battery bank and daily top ups with human powered electricity you'd have enough to meet the power needs of a small liveaboard sailing yacht it seems! hurrah!
07-13-2012 09:39 PM
hboy
Re: Human-Powered electricity generating..?

Hi:

Years ago I used to follow the Human Powered folks. I have a stack of magazines somewhere. Any how, IIRC, any reasonably fit person can produce about 75 Watts, world class athletes about 400 Watts. This is continuous for hours. If you were on a boat doing this every day for say 2 hours, you would soon enough find yourself over 200 Watts I would think.

I once left Winnipeg and made it to Vancouver a month later. I was in MUCH better condition at the end of the month.

So assuming 200 Watts after a while of getting in to shape, and 2 hours/day, and 75% efficiency, a good working number would be something like 300 Watt-hours a day for one's 2 hours of exercise.

hboy
07-11-2012 09:32 PM
davidpm
Re: Human-Powered electricity generating..?

Quote:
Originally Posted by hellosailor View Post
WW2 emergency radio sets routinely had crank power, the problem is that the human being usually consumes more energy than it produces.
Not a problem corn and grain are subsidized by the feds so are relatively cheap.
So instead of a corn fed cow we could have a corn fed captain.
Oops time to move to off-topic.
07-11-2012 07:27 PM
Pneuma-seeker
Re: Human-Powered electricity generating..?

A CT company called The Green Revolution has been building and selling stationary bikes to gyms for about 5 years now. They say the average user inputs about 100 Watts.
07-11-2012 05:51 PM
denverd0n
Re: Human-Powered electricity generating..?

Quote:
Originally Posted by VentureCat15 View Post
A better way to store energy for starting an engine is in the form of compressed air, either by a hand or leg pump.
And pray tell, where would I buy a compressed air starter for my Yanmar? Mind you, for it to really be "better" it needs to be very comparably priced to the electrical alternatives (preferably less, but definitely not too much more).
07-11-2012 05:35 PM
VentureCat15
Re: Human-Powered electricity generating..?

A better way to store energy for starting an engine is in the form of compressed air, either by a hand or leg pump.
07-11-2012 05:29 PM
DavidB.UK
Re: Human-Powered electricity generating..?

Quote:
Originally Posted by davidpm View Post
Here you go:
Human Power Generator -- Generate electricity yourself

The Human Power Generator will charge at a rate of between 3A to 5A when connected to a 12V battery.The average output is between 35 to 65 watts of power.
Those look perfect for the job!
Thank you very David.
07-10-2012 10:48 PM
davidpm
Re: Human-Powered electricity generating..?

Here you go:
Human Power Generator -- Generate electricity yourself

The Human Power Generator will charge at a rate of between 3A to 5A when connected to a 12V battery.The average output is between 35 to 65 watts of power.
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