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#31
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The last headlight you will ever need
On Wed, 26 Mar 2014 13:22:45 -0700, sms
wrote: You need to work on a bicycle driven coffee grinder. Some bicycles already have that feature built in as an optional accessory to the roller dynamo. Just put the coffee beans between the tires and the roller dynamo, and instant crushed beans. Adjust weight load and tire pressure for your favored grind. If you insist on clean coffee grounds, just put the beans in a long tube or soda straw. For bicycle tourists without access to electric power the present options suck because the manual grinders are extremely slow. Still, that would go well with the non-electric utopian future. Also, you don't need a grinder as a coffee bean crusher will suffice. For tourists, it's easy enough to take a bag of beans, place a metal plate over the bag of beans, put everything in the roadway, and wait for the traffic to crush the beans[1] If desperate, use a hammer or something to pound on the beans. http://www.wikihow.com/Grind-Coffee-Beans-Without-a-Grinder http://answers.yahoo.com/question/index?qid=20070603193920AArmKLO Contrary to what was shown in the movie City Slickers, there are no battery powered coffee grinders. The closest I've come is this: http://nordicgroup.us/bikecoff/bcimages/batterygrinder.JPG but this 12VDC grinder has been discontinued. Hmmm... that's one application where a direct bicycle drive is unlikely to work. Unlike the bicycle powered can opener, a bicycle powered coffee grinder will require high rotational speeds. Gearing up to several thousand RPM is not going to be practical or efficient. A coffee bean crusher, as previously described, should suffice. [1] It also works well for grinding Java beans: http://802.11junk.com/jeffl/pics/repair/slides/Iphone4-cracked-screen-01.html -- Jeff Liebermann 150 Felker St #D http://www.LearnByDestroying.com Santa Cruz CA 95060 http://802.11junk.com Skype: JeffLiebermann AE6KS 831-336-2558 |
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#32
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The last headlight you will ever need
On 27/03/14 11:56, John B. wrote:
On Wed, 26 Mar 2014 13:22:45 -0700, sms wrote: On 3/26/2014 12:29 PM, Jeff Liebermann wrote: snip Hmmm... I haven't seen any bicycle powered can openers, but I suppose one could be designed. Speed reduction seems to be the major problem, so I would suggest an outboard worm gear, driving a sprocket, with the power transmitted to the can opener via a speedometer cable. I'm not sure there's a market, but if you label it "high efficiency" and "ecologically correct", it should bring in some sales. You need to work on a bicycle driven coffee grinder. For bicycle tourists without access to electric power the present options suck because the manual grinders are extremely slow. Contrary to what was shown in the movie City Slickers, there are no battery powered coffee grinders. The closest I've come is this: http://nordicgroup.us/bikecoff/bcimages/batterygrinder.JPG but this 12VDC grinder has been discontinued. My goodness but you Americans seem so inapt. One can easily pound coffee beans into a powder with a mortar and pestle. Just like the old folks used to. But of course, you probably can't figure out how to operate one of those. I was looking for a hand operated coffee grinder a while back. There were new ones available that were more for show than actual use, and of course I could use my mortar and pestle for a coarse grind, but in the end I was resigned to the fact that unless I bought an overpriced antique, my only option was an electric burr grinder. It works very well. I got quite an industrial looking device. I just hope it lasts well enough. -- JS |
#33
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The last headlight you will ever need
On 27/03/14 11:56, John B. wrote:
On Wed, 26 Mar 2014 13:22:45 -0700, sms wrote: On 3/26/2014 12:29 PM, Jeff Liebermann wrote: snip Hmmm... I haven't seen any bicycle powered can openers, but I suppose one could be designed. Speed reduction seems to be the major problem, so I would suggest an outboard worm gear, driving a sprocket, with the power transmitted to the can opener via a speedometer cable. I'm not sure there's a market, but if you label it "high efficiency" and "ecologically correct", it should bring in some sales. You need to work on a bicycle driven coffee grinder. For bicycle tourists without access to electric power the present options suck because the manual grinders are extremely slow. Contrary to what was shown in the movie City Slickers, there are no battery powered coffee grinders. The closest I've come is this: http://nordicgroup.us/bikecoff/bcimages/batterygrinder.JPG but this 12VDC grinder has been discontinued. My goodness but you Americans seem so inapt. One can easily pound coffee beans into a powder with a mortar and pestle. Just like the old folks used to. But of course, you probably can't figure out how to operate one of those. I do use a hand powered can opener though, and have never owned an electric can opener. -- JS |
#34
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The last headlight you will ever need
On Wed, 26 Mar 2014 21:47:16 -0700, Jeff Liebermann
wrote: 600 watts: http://www.econvergence.net/The-Pedal-A-Watt-Bicycle-Generator-Stand-s/1820.htm See bottom of page for the "400 watt grid intertie inverter". Sigh. 300 watts: http://www.pedalpowergenerator.com -- Jeff Liebermann 150 Felker St #D http://www.LearnByDestroying.com Santa Cruz CA 95060 http://802.11junk.com Skype: JeffLiebermann AE6KS 831-336-2558 |
#35
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The last headlight you will ever need
On Thu, 27 Mar 2014 15:30:14 +1100, James
wrote: On 27/03/14 11:56, John B. wrote: On Wed, 26 Mar 2014 13:22:45 -0700, sms wrote: On 3/26/2014 12:29 PM, Jeff Liebermann wrote: snip Hmmm... I haven't seen any bicycle powered can openers, but I suppose one could be designed. Speed reduction seems to be the major problem, so I would suggest an outboard worm gear, driving a sprocket, with the power transmitted to the can opener via a speedometer cable. I'm not sure there's a market, but if you label it "high efficiency" and "ecologically correct", it should bring in some sales. You need to work on a bicycle driven coffee grinder. For bicycle tourists without access to electric power the present options suck because the manual grinders are extremely slow. Contrary to what was shown in the movie City Slickers, there are no battery powered coffee grinders. The closest I've come is this: http://nordicgroup.us/bikecoff/bcimages/batterygrinder.JPG but this 12VDC grinder has been discontinued. My goodness but you Americans seem so inapt. One can easily pound coffee beans into a powder with a mortar and pestle. Just like the old folks used to. But of course, you probably can't figure out how to operate one of those. I was looking for a hand operated coffee grinder a while back. There were new ones available that were more for show than actual use, and of course I could use my mortar and pestle for a coarse grind, but in the end I was resigned to the fact that unless I bought an overpriced antique, my only option was an electric burr grinder. It works very well. I got quite an industrial looking device. I just hope it lasts well enough. It depends on what type of grind you need. I drink "Chinese coffee", it is called here, that is powdered coffee and you use a "sock" a sort of cone shaped cloth bag with a brass wire handle. Put the powdered coffee in the sock and pour hot water through it. But if you wanted to use a percolator or something like that I suspect that pounding the coffee would make too many "fines". -- Cheers, John B. |
#36
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The last headlight you will ever need
On Thu, 27 Mar 2014 15:31:25 +1100, James
wrote: On 27/03/14 11:56, John B. wrote: On Wed, 26 Mar 2014 13:22:45 -0700, sms wrote: On 3/26/2014 12:29 PM, Jeff Liebermann wrote: snip Hmmm... I haven't seen any bicycle powered can openers, but I suppose one could be designed. Speed reduction seems to be the major problem, so I would suggest an outboard worm gear, driving a sprocket, with the power transmitted to the can opener via a speedometer cable. I'm not sure there's a market, but if you label it "high efficiency" and "ecologically correct", it should bring in some sales. You need to work on a bicycle driven coffee grinder. For bicycle tourists without access to electric power the present options suck because the manual grinders are extremely slow. Contrary to what was shown in the movie City Slickers, there are no battery powered coffee grinders. The closest I've come is this: http://nordicgroup.us/bikecoff/bcimages/batterygrinder.JPG but this 12VDC grinder has been discontinued. My goodness but you Americans seem so inapt. One can easily pound coffee beans into a powder with a mortar and pestle. Just like the old folks used to. But of course, you probably can't figure out how to operate one of those. I do use a hand powered can opener though, and have never owned an electric can opener. Years ago, being the dotting husband that I am :-) I bought my wife an electric can opener. She tried it a few times and put it away and went back to the manual can opener. I can only assume that the manual opener worked better for some reason. -- Cheers, John B. |
#37
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The last headlight you will ever need
On Wed, 26 Mar 2014 21:52:24 -0700, Jeff Liebermann
wrote: On Wed, 26 Mar 2014 21:47:16 -0700, Jeff Liebermann wrote: 600 watts: http://www.econvergence.net/The-Pedal-A-Watt-Bicycle-Generator-Stand-s/1820.htm See bottom of page for the "400 watt grid intertie inverter". Sigh. 300 watts: http://www.pedalpowergenerator.com But can you do it for 8 hours a day, day in and day out? I really need to power some tools on the boat I'm working on which is anchored out in the harbour. -- Cheers, John B. |
#38
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The last headlight you will ever need
On 3/27/2014 7:46 AM, John B. wrote:
On Thu, 27 Mar 2014 15:31:25 +1100, James wrote: On 27/03/14 11:56, John B. wrote: On Wed, 26 Mar 2014 13:22:45 -0700, sms wrote: On 3/26/2014 12:29 PM, Jeff Liebermann wrote: snip Hmmm... I haven't seen any bicycle powered can openers, but I suppose one could be designed. Speed reduction seems to be the major problem, so I would suggest an outboard worm gear, driving a sprocket, with the power transmitted to the can opener via a speedometer cable. I'm not sure there's a market, but if you label it "high efficiency" and "ecologically correct", it should bring in some sales. You need to work on a bicycle driven coffee grinder. For bicycle tourists without access to electric power the present options suck because the manual grinders are extremely slow. Contrary to what was shown in the movie City Slickers, there are no battery powered coffee grinders. The closest I've come is this: http://nordicgroup.us/bikecoff/bcimages/batterygrinder.JPG but this 12VDC grinder has been discontinued. My goodness but you Americans seem so inapt. One can easily pound coffee beans into a powder with a mortar and pestle. Just like the old folks used to. But of course, you probably can't figure out how to operate one of those. I do use a hand powered can opener though, and have never owned an electric can opener. Years ago, being the dotting husband that I am :-) I bought my wife an electric can opener. She tried it a few times and put it away and went back to the manual can opener. I can only assume that the manual opener worked better for some reason. Probably useful for people with arthritis or something. Easy enough to find a manual one that works well these days. Not like the old stab and cut ones. I would also love to find a good manual coffee grinder that didn't cause an arm and a leg so if anyone has a link... |
#39
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The last headlight you will ever need
On Thu, 27 Mar 2014 18:51:03 +0700, John B.
wrote: On Wed, 26 Mar 2014 21:52:24 -0700, Jeff Liebermann wrote: 600 watts: http://www.econvergence.net/The-Pedal-A-Watt-Bicycle-Generator-Stand-s/1820.htm See bottom of page for the "400 watt grid intertie inverter". Sigh. 300 watts: http://www.pedalpowergenerator.com But can you do it for 8 hours a day, day in and day out? Not me. That's where kids and slave labor can be useful. I really need to power some tools on the boat I'm working on which is anchored out in the harbour. That depends on which power tools and how much power they draw. A Model 77 Skilsaw, that draws 12A at 117V is not going to be easy to power. For lesser tools, use 12V power running on a battery bank or a 12V to 117/230VAC inverter for running AC powered tools. Charging the batteries might be a bit awkward but with solar panels, can be done. If you're using hand power tools, I've modified a few old Mikita tools to use LiIon batteries, which last much longer and can be charged very rapidly. Last resort is floating a very long extension cord to shore power. -- Jeff Liebermann 150 Felker St #D http://www.LearnByDestroying.com Santa Cruz CA 95060 http://802.11junk.com Skype: JeffLiebermann AE6KS 831-336-2558 |
#40
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The last headlight you will ever need
On 3/27/2014 11:00 AM, Phil W Lee wrote:
John B. considered Thu, 27 Mar 2014 18:51:03 +0700 the perfect time to write: On Wed, 26 Mar 2014 21:52:24 -0700, Jeff Liebermann wrote: On Wed, 26 Mar 2014 21:47:16 -0700, Jeff Liebermann wrote: 600 watts: http://www.econvergence.net/The-Pedal-A-Watt-Bicycle-Generator-Stand-s/1820.htm See bottom of page for the "400 watt grid intertie inverter". Sigh. 300 watts: http://www.pedalpowergenerator.com But can you do it for 8 hours a day, day in and day out? I really need to power some tools on the boat I'm working on which is anchored out in the harbour. You should be able to power a reasonably respectable car alternator with even a fairly modest wind turbine, which would seem ideally suited to use on a boat. That'll keep a decent 12v battery charged for either direct use, or through an inverter if you need utility voltage for your tools. I can't say that I remember using any power tools on boats when I used to help out down at the yard in Brnham-on-Crouch though. In the 1930s there were kits to use a Sturmey Archer dynohub powered by a windmill to charge batteries and run DC auto lamps for farm lighting. -- Andrew Muzi www.yellowjersey.org/ Open every day since 1 April, 1971 |
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