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Living in Anjou , France,
For the many not for the few
http://www.permies.com/t/80/31583/projects/Permie-Pennies-France#330873
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Jeremy Baker wrote:HI. For anyone building anything I suggest looking at the www.surpluscenter.com catalog.
....but why stop there that place is a gold mine ,the things you can make with there what knots[o i forget most people buy the things to replace the things]another of my new fav places ive found is www.bgmicro.com[sorry for the links i spell like well lets just say im lucky to use letters in the right order when it comes to math}as for tooth count and pitch for a chain stop your losing before you get started,as mentioned above you wont be transferring that much torque[but before i put my foot in my mouth you have left out a few important specs.like what voltage are you after and at what rpm do you need to achieve this,the actual foot print you have to work with,and a few more i would consider,but i have a tendency to wander...] friction can present a few problems,but with enough room they can be over come,belts and pulleys have there own quirks too ... the name of the game is efficiency, and the best way to achieve that at first is simplicity and balance .consider the time you have exerted trying to get the spec sheets and chasing down the link count of the chain the width between the links ect.you could have set up a small tram sled mounted the genny added a friction wheel and been off making a charge,and as you did this the time you spent on the bike [i hear there could be plenty] would have allowed you to see and experience the pros and cons and envision a multitude of the what ifs and why nots......[WOW] my wife just pointed out that i sound like a jerk sorry,i was trying to get around to the efficiency example .the long and the short of it the stationary bike to charge a battery bank strait across the board is not efficient,but dont scrape the project on my point of view,broaden yours.instead of a battery bank plug into a direct use inverter,now this is going to sound funny but you can use one of the outlets to run a trickle charger,and another for a different want or need now one action is providing for two more, thats why the foot print is important to know because to make this happen with a smooth transition your going to want to add a transmittion [gear box even spell check didnt know what i meant ]to get more out of less and of course you will have to add a piece to make sure your getting an even charge with minimal surges,but after you get that in go back to the peddles and add weight to one side creating a cammed reaction so your input can be lessened after you get it started .....and now you can see how to mount a genny to your bike..... all you have to do really is be efficient....
If the gods can make it,i can shape it.
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Ben Tyler wrote:
And suddenly, BAM! I've hit a wall. It turns out the world of gears and chains is immense, and virtually impenetrable for a noob like me. Now this may be a long shot, but does someone on this forum have experience with pinion gears, possibly from a small wind turbine project?
I have an 11T pinion gear, and the Chinese manufacturers of my generator can't tell me any more than that. It seems to be 2mm thick. I think I'm missing some crucial information here, like the "pitch", or the "distance between teeth" or something. Its teeth are slightly too close together to fit on a regular bike chain..!
My opinions are barely worth the paper they are written on here, but hopefully they can spark some new ideas, or at least a different train of thought
"Never doubt that a small group of thoughtful, committed citizens can change the world; indeed, it's the only thing that ever has."-Margaret Mead "The only thing worse than being blind, is having sight but no vision."-Helen Keller
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Nails are sold by the pound, that makes sense.
Soluna Garden Farm -- Flower CSA -- plants, and cut flowers at our Boston Public Market location, Boston, Massachusetts.
Peter VanDerWal wrote:
So chains come in two basic varieties, metric and "standard".
Pitch on Standard chains come in 1/8" increments and the first number equals how many '1/8's. So #40,#41,#42,#410, etc. are all 1/2' pitch (same as bicycle chain).
A standard size frequently used on go-carts, etc. is a #35 which has a 3/8 pitch , that's probably what you have. Measure it from the middle of one tooth to the middle of the next.
If it's smaller than 3/8 pitch, then it's probably a 8mm pitch metric chain.
Kenneth Elwell wrote:Peter VanDerWal's info on the chain is great...
However, since you are searching for the chain without any samples to work with... I'd suggest finding a local bearing distributor and take your sprocket to their counter and get their help in sussing out what pitch it is.
Bonus: they can sell you the parts you need! I'd also go armed with the shaft dimension for the bike end (use calipers or a micrometer) so you can get the correct bore on the hub to fit the bike.
You might also find roller chain at a GOOD hardware store, or an outdoor power repair shop, that you might be able to try some different chains to your sprocket...but they won't likely have the bike side sprocket you want.
So, you'd just be "showrooming" to purchase online later...
If you happen to find some chain, sometimes the plates are stamped with the pitch, and that's a great help...
If you measure ten links and divide the result by 10 you can increase your precision, and maybe tell the difference between metric and standard pitches that are close in size.
Greg Macmillan wrote:One thing I know for sure is that it is better to have a direct drive from the pedals to the generator using chains and sprockets as if they are set up correctly they are the most efficient versus belts or a two stage approach or running a generator from friction on the tire. You need as good an efficiency as it is really hard work to make a useful amount of power. The average person can do 200 watts for a short time and maybe 50 for a more sustained period.
Greg
Sometimes the answer is not to cross an old bridge, nor to burn it, but to build a better bridge.
ronie dee wrote:
How much electricity do you want from the pedal machine? If you want just enough for a few LED lights and want to spend the hours pedaling, maybe might be worth it.
I think it is a waste of time and resources to generate any decent amount of electricity with pedal power. It's possible, but quite involved. You are far better off hooking the bike to the appliance and grind your grain with a mill. Pump some water, hook it to a sharpening wheel, hook it to a makeshift washing machine. ...................
If you think you can make an 8 ft diameter wheel that runs perfectly straight and spins perfectly and most likely has a fly wheel that is also perfectly true, and you want to spend a lot of hours manually spinning electricity, you might get enough electric to run a few things.
I think finding a temp job for a week and getting a solar panel or two then instead of pedaling electricity you spend time with other chores and let the sun do the generating. 25 years of sun electricity for a weeks work in 2018.
Sometimes the answer is not to cross an old bridge, nor to burn it, but to build a better bridge.
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ronie dee wrote:Hey Ben, Hope it is warm where you are. Sorry, if all you want to do is make enough for phone, then my advice is little value to you. Unless you might think of a way to make a simple mechanical device (clothes washer is coming to mind) you are well in the right zone to have a simple electrical charger for your situation. A deep cycle battery and generator might be more expensive than setting up a barrel that can be turned with your "free" muscle energy that does the laundry.
Best of luck and warm weather to you. Hope to see a follow up as to your experience with the muscle power.
ronie dee wrote:
How much electricity do you want from the pedal machine? If you want just enough for a few LED lights and want to spend the hours pedaling, maybe might be worth it.
I think it is a waste of time and resources to generate any decent amount of electricity with pedal power.
My opinions are barely worth the paper they are written on here, but hopefully they can spark some new ideas, or at least a different train of thought
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What is that? Is that a mongol horde? Can we fend them off with this tiny ad?
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