Energy from exercise bikes?

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Energy from exercise bikes?

Post: #142434 JeremyinCzechRep
Wed Feb 11, 2009 9:52 pm

It is incredible to see so many people in gyms lifting weights and pedalling nowhere on exercise bikes. Think how much energy they could be generating. Surely enough to run the electricty in their own building - a large wooden treadmill would probably be best. I am sure it would take a lot of effort to charge up a car battery from which you could run a telly for an hour - which would only cost you a few pennies from powergen, but it is the idea that I like. Has anyone ever tried such a system?
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Re: Energy from exercise bikes?

Post: #142456 Millymollymandy
Thu Feb 12, 2009 7:13 am

Um no, but as I bought myself an exercise bike before Xmas then promptly went down with the flu followed by a cold, I have only just got back to using the bike but the amount of energy I'd put out right now is about zilch! :lol: :(

Sorry to joke, I'm interested in any replies to this topic though!
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Re: Energy from exercise bikes?

Post: #142477 Rosendula
Thu Feb 12, 2009 9:45 am

I haven't tried it but I have thought along the same lines. I live across the road from an athletics stadium and every time I go out I see people in the window of the gym going nowhere fast on the treadmills and I think of all the electricity that is being used to power the machine, and all the personal energy being used by the person using it. I guess I'm a bit anti-exercise because all I can think is 'what a waste'. Surely there must be a way to harness the jogger's energy, seeing as they have so much, and put it to good use?
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Re: Energy from exercise bikes?

Post: #142624 Ellendra
Thu Feb 12, 2009 8:11 pm

Seems if the treadmill were built at an angle, with the belt moving freely, one could stand still on the belt and gravity would roll it downhill. It might be tricky getting speed control, but after that's figured out, hook a thingy to the rollers under the belt to generate power.

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Re: Energy from exercise bikes?

Post: #142626 JeremyinCzechRep
Thu Feb 12, 2009 8:20 pm

My idea was something like a very large wooden cotton reel, with a number of runners on top of it with steps that they walk up, forcing the reel wheel to turn (quite slowly as it is connected to cogs which will make inner wheels turn much faster and they would actually generate the electricty. Didn't Oscar Wilde have to walk on one of these things as punishment for his crime of being gay?
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Re: Energy from exercise bikes?

Post: #142645 Big Al
Thu Feb 12, 2009 9:38 pm

JeremyinCzechRep wrote:My idea was something like a very large wooden cotton reel, with a number of runners on top of it with steps that they walk up, forcing the reel wheel to turn (quite slowly as it is connected to cogs which will make inner wheels turn much faster and they would actually generate the electricty. Didn't Oscar Wilde have to walk on one of these things as punishment for his crime of being gay?



Last weeks victorian farm prog had the same idea for using bike power to power a farm impliament. I was tempted to fix a car alternator to the frame of a bike and link this by a chain to the rear cogs so that you could adjust the speed at which you pedeled and this would in turn charge a battery as it does in a car set up. Another great idea that sadly has satayed as an "idea".
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Re: Energy from exercise bikes?

Post: #142753 Clara
Fri Feb 13, 2009 6:54 pm

The bike powered washing machine already exists. My OH had a go on it at the BGG 05.
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Re: Energy from exercise bikes?

Post: #142755 Big Al
Fri Feb 13, 2009 6:57 pm

Clara wrote:The bike powered washing machine already exists. My OH had a go on it at the BGG 05.



so he's getting one for all the nappies that need washing ????
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Re: Energy from exercise bikes?

Post: #142767 Clara
Fri Feb 13, 2009 7:59 pm

Big Al wrote:
Clara wrote:The bike powered washing machine already exists. My OH had a go on it at the BGG 05.



so he's getting one for all the nappies that need washing ????


Fortunately for him all our hot water and electricity is produced from renewables anyhow.......no pedal, no guilt!
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Re: Energy from exercise bikes?

Post: #142774 Big Al
Fri Feb 13, 2009 8:28 pm

Clara wrote:
Big Al wrote:
Clara wrote:The bike powered washing machine already exists. My OH had a go on it at the BGG 05.



so he's getting one for all the nappies that need washing ????


Fortunately for him all our hot water and electricity is produced from renewables anyhow.......no pedal, no guilt!



and as a woman you are letting him get away with this ??
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