I wish my exercise bike had one of these.

Is it earth friendly if I have to drink 10 bottles of bottled water and eat steaks that I cooked on a chargoal grill, with vegetables grown on the opposite cost with lots of fertilizers to keep me from passing out while I power my computer?

@Veeber:

Mental note: avoid Veeber at social gatherings

They finally figured out a way to get fat tech geeks into shape.

This is perfect. Now I just need a woman to crank it.

@GeekyNerdGuy: amongsts other things?

@GeekyNerdGuy: Depending on your standards, this can be gotten cheaply.

@carmen89: Are you offering?

I want one that can plug into my wallsocket. Pedal hard enough and watch your electric meter spin backwards.

@GeekyNerdGuy: i don't belive so.

@Gann: ...and if you pedal fast enough to reach 88mph you'll go back in time.

@carmen89: Don't worry -- cranking the charger and yanking the crank are two completely different muscle groups.

@IndustrialJones: If you can get going 88mph on a stationary bike, I'll be quite impressed.

@Luke: You have to tilt it downhill, of course ...

@Luke: you haven't seen my calf muscles.

I wonder how loud it is? Would I annoy my co-workers if I had one under my desk? I think that it would be pretty hard to pedal on an office chair with caster wheels.

@Castle1914: Do you think Columbus said, "I think that it would be pretty hard to sail a boat across the entire ocean?"

shouldn't there be an instructable on this!? Somebody ask KIPKAY!

...like I want to make one

+ Watch video

[www.instructables.com] and i'll shut up now :x

@jimmyJAKE!: about time!

Anyone know how much electricity one produces when using this? Could I power a Laptop on it???

It seems nobody's extrapolated the operation of a complete gym through these type generators. Imagine it: people pay you (membership fees) to work nautilus-type machines which generate electrcity for the televisions and A/C in the gym. It's all micro-grid'ed internally and each piece of equipment is plug and play, part of the grid circuit. Your patrons can work out, feel great about how healthy and "green" they are while playing the role of Coppertop. Your patrons can earn credits based contributions to the grid and exchange them for tv-time on the treadmill or drinks or a clean towel at the end of their workout. It's all very simple, you see -- one small step into a larger world...

You aren't really considering copyrighting this, are you?

@Bob_of_Mars: Well other charging systems have no trouble powering a laptop (particularly if your laptop has a DC powered option so you don't have to do something stupid like run an inverter) [www.econvergence.net]

This system isn't really designed to put out that wattage though.

but if you pedal to 88mph and go back in time, won't you go back before you bought it creating a paradox thereby making it impossible to travel back to your own time?

this system is more efficient anyway:
[www.freeplayenergy.com]

I am surprised that nobody else suggested the similarity to the system used on Gilligan's Island.