If he could do that, you could make one heck of an EMP device, ofc, so I'd think the first thing that'd happen is that the local gov't would classify the...
5937
KronoNaut
krono.naut
Aug 13, 2012 9:20 pm
I had my rear derailleur go out on my bike and started thinking that after over a 100 years of bicycle mechanics there has to be a better way to get the power...
5938
Bert Hickman
bert_hickman
Aug 13, 2012 9:47 pm
Whoa - now THAT'S some pulsed power! http://www.youtube.com/watch?v=Vl2DZksxljU http://farm9.staticflickr.com/8427/7734495598_cb2858f1dc_k.jpg Bert -- Bert...
5939
Vaughn Mcdowell
vaughn.mcdowell
Aug 13, 2012 10:53 pm
Definitely cool stuff; it is Web pages like this that gives me inspiration; I learn lot from these. Rail guns are cool also. [Non-text portions of this...
5940
Erik Von Halle
erikvonhalle
Aug 14, 2012 12:02 am
Let's be a lot more extreme. Let's put a generator on the peddels and a motor in the hub of one of the wheels. Then no shafts, no chain, no derailer....
5941
Rich W
astronut1001
Aug 14, 2012 3:43 pm
The shaft drive idea dates back to the 19th century, the bicycle boom of the 1890s. Even multi speed versions were made. The reason why the idea never...
5942
Rich W
astronut1001
Aug 14, 2012 3:59 pm
A matter of efficiency. The chain drive and derailleurs is about 90 to as much as 98% efficient. It is the most efficient drive mechanism available that I...
5943
Erik Von Halle
erikvonhalle
Aug 14, 2012 4:26 pm
Humans are almost one third horsepower. Unfortunately the charge discharge cycle on batteries are only fifty percent efficent. I am looking at the cheap...
5944
Rich W
astronut1001
Aug 14, 2012 4:46 pm
One Third horsepower (250 watts) for any period of time requires a well trained athlete. The average city biker is good for 50 to 100 watts continuous output...
5945
Erik Von Halle
erikvonhalle
Aug 14, 2012 7:53 pm
That is correct! The one third horsepower figure came from a program I saw on TV about the Gossamer Condor. http://en.wikipedia.org/wiki/Gossamer_Condor Erik ...
5946
Erik Von Halle
erikvonhalle
Aug 14, 2012 8:05 pm
I really like HPVs. I am thinking about designing a bicycle powered boat that I couldĀ carry in my saddlebags. I want to ride to Chattfield Reservoir, set up...
5947
KronoNaut
krono.naut
Aug 14, 2012 9:58 pm
I wonder that the power loss would be between the generator and the motor. My scooter has a 48v 1000 watt motor, that's a lot of juice to generate. I do plan...
5948
M W
rd232d
Aug 14, 2012 9:59 pm
Amazing picture! I imagine someone's Disaster Response was just activated? I do EE work normally, but I know just enough about IT to know that larger companies...
5949
Rich W
astronut1001
Aug 15, 2012 3:11 am
Erik; I read the book about that flight, and the Gossamer Albatross flght across the English Channel. By the end of the latter flight the pilot was suffering...
5950
Rich W
astronut1001
Aug 15, 2012 4:03 am
Both have been mentioned in recent posts but if you are interested in human powered vehicles (HPVs) then the two best references I know of are "Bicycling...
5951
M W
rd232d
Aug 15, 2012 1:18 pm
Since I have knee problems, I'm more interested in electric bicycles, sad to say; so I'll ask, has anyone rolled their own e-bike? I've seen references to...
5952
Rich W
astronut1001
Aug 15, 2012 3:27 pm
Bike Forums has a whole forum devoted to electric bikes, commercial and DIY. Bike Forums seems to be the major forum for most bicycle discussions on the web...
5953
Erik Von Halle
erikvonhalle
Aug 15, 2012 9:10 pm
GREAT MINDS THINK ALIKE! I also am interested in being lazy. After all "Progress is lazy people looking for easier ways to do things." ...
5954
M W
rd232d
Aug 16, 2012 1:20 pm
TY Erik and Rich, I don't mind having electric assist, some exercise IS ok, but I have to agree that laziness can be wise, especially when your knees hate you...
5955
Frank P
qz9090
Aug 16, 2012 2:51 pm
You might find the Dewalt (drill) bike of interest... https://www.youtube.com/watch?v=gC3rB9f7DaU&feature=related Here are some others... ...
5956
Brian
gaiatechnician
Aug 28, 2012 4:15 am
I made dripper trackers several years ago and won a prize on instructables but nobody was interested enough to try them out. This year I made the dripper part...
5957
Steve Greenfield
alienrelics
Aug 28, 2012 5:30 am
You are the king of making gold out of junk, I think. Steve Greenfield AE7HD http://www.linkedin.com/in/stevenjgreenfield...
5958
Vaughn Mcdowell
vaughn.mcdowell
Aug 31, 2012 10:57 pm
I have just posted my initial experimental results http://vaughns_page.50webs.com/Magnetron/magpg/magnetron_pg.html see NEW SECTION =>> Modified Magnetrons :...
5959
mad_scientist@yahoogr...
Sep 1, 2012 11:57 am
Monthly Reminder, please read: Please try to stay on topic. *Off topic: religion, sports, politics, numerology, UFOs, you get the picture. Please do not...
5960
Vaughn Mcdowell
vaughn.mcdowell
Sep 12, 2012 7:20 pm
I have purchased several Welch vacuum pumps from Ebay on a beer budget, most needed cleaning;with my limited experience I have had some success getting them ,...
5961
Terrance
evil666demonic
Sep 13, 2012 3:19 pm
I rebuilt a Welch pump last year. The rebuild kit was under $15. Once rebuilt, it now pumps down to 27-28 in/Hg. I put a Dririte cartridge on the input to...
5962
Vaughn Mcdowell
vaughn.mcdowell
Sep 13, 2012 6:03 pm
Thanks for responding; wow I have lots of questions; I will keep it down to a few at a time: 1) what is the lowest cost pump oil that can be used for flushing,...
5963
Terrance
evil666demonic
Sep 13, 2012 11:21 pm
Here's my best attempt to answer your questions (I wish I could be more helpful): 1) I can't speak towards price, however, I use MasterCool Deep Vacuum oil. I...
5964
Vaughn Mcdowell
vaughn.mcdowell
Sep 14, 2012 12:49 pm
Thanks for taking the time to respond; I get frustrated trying to get information on line; especially items no longer in production. I certainly appreciate...
5965
Vaughn Mcdowell
vaughn.mcdowell
Sep 16, 2012 2:27 pm
I checked out your recommendation for the Dririte cartridge on line; looks like exactly what I need; I have an experimental setup based on what I have found on...
