[ElectricMotorcycles] Calculator Questions
1. How do these ev calculator sites work, as in what programs do they use? It's not excel right? 2. If I use an image as the example, is it possible to attach an image to each set of values that I change in the calculator? The scenario that I am thinking of is displaying a bike with the factors that work against and for the acceleration. When I change the drive ratio, I want to see the front or rear gear get bigger or smaller. When I change the gradient, I want to see the bike go from level to uphill. Change the drag coefficient, see it change from a chopper to a haiyubasa to streamline, etc. Changing the type of batteries which changes the weight and maybe ride height. I am basing this concept off of a site for VW that you could change the stylings and thought it could be incorporated together. http://www.busselecta.com/ Never Miss an Email Stay connected with Yahoo! Mail on your mobile. Get started! http://mobile.yahoo.com/services?promote=mail
Re: [ElectricMotorcycles] Calculator Questions
--- Mike wrote: I am basing this concept off of a site for VW that you could change the stylings and thought it could be incorporated together. http://www.busselecta.com/ Those are done in Flash and a good way to make your friends late to work! Thanks Lyle! Thanks, Mike.And glad to be of service. LOL Bored stiff? Loosen up... Download and play hundreds of games for free on Yahoo! Games. http://games.yahoo.com/games/front
Re: [ElectricMotorcycles] Ninja 250 conversion?
I can pick up the 250 roller real cheap.. That's what got me thinking along these lines. Do it. Do it. Do it. Anyone know of an available Ninja 750 roller? I would go the EL Chopper route, but I don't know how far I want to get into frame modification. Pleaes don't fall into a Ninja only trap. By that I mean it doesn't have to be a Kawasaki Ninja. It could be a YZF, GSX-R, CBR, or pretty much anything else. I haven't read Secrets of El Ninja but I suspect what John is putting forth in the book holds true for any bike. Mike -- The Electric Motorcycle Portal http://www.electricmotorcycles.net/ Electric Motorcycle Listserv http://www.electricmotorcycles.net/listserv
Re: [ElectricMotorcycles] Ninja 250 conversion?
How is that the battery instrument panel project coming along? Does anyone know? There's a couple of projects out there. On the EVTech listserve they're developing a very nice one for cars though we could scale it down for bikes. Then there's EM Dash of course but they guy who's spear heading that is a ninny and almost completely new to electronics. He spends so much time letting the smoke out of expensive components that his wife now teases him on a regular basis. http://emdash.electricmotorcycles.net/ -- The Electric Motorcycle Portal http://www.electricmotorcycles.net/ Electric Motorcycle Listserv http://www.electricmotorcycles.net/listserv
[ElectricMotorcycles] Etek
Cedric Lynch who designed the motor on which the Etek is based, is a friend of mine. He made extensive tests of the etek and knows it's limitations. If you go much over 300 amps then the efficiency falls off a cliff. The motor has been 'value engineered' down to a specific cost/performance level and you can't do much to improve it. No ONE thing is limiting the performance, it's a combination of copper, laminations, brushes, magnets, and insulation. If you need more torque, use a higher reduction ratio, or add a second motor. One thing they got very wrong originally and caused much amusement to the Chinese over the 'stupid yanks' was the dimensions of the motor. It was all designed in imperial or inch dimensions! Most dimensions are of course fairly arbitrary, but thread sizes and bearings are not. It would have doubled the cost of the motors if the bearings and most of the threads hadn't been converted to metric., since the factory would have has to buy special tooling. Years ago Prestolite motors in the US used metric bearings internally since they knew that metric bearings are less than half the cost of imperial on the world market. Paul Compton www.evguru.co.uk www.sciroccoev.co.uk www.bvs.org.uk www.morini-mania.co.uk www.compton.vispa.com/the_named
Re: [ElectricMotorcycles] Ninja 250 conversion?
Interesting thought started on that one, Mike. I like that precooler so to speak. I think Peltier exchangers would help in this instance, but I would be concerned with the sudden temp change on the brushes, i.e. cold to hot. Whether I was thinking of something that is for pit use, ie not a permanent attachment. Sorta like a tire warmer. Mike -- The Electric Motorcycle Portal http://www.electricmotorcycles.net/ Electric Motorcycle Listserv http://www.electricmotorcycles.net/listserv
Re: [ElectricMotorcycles] Ninja 250 conversion?
I haven't had an issue with melting Etek solder at momentary currents up to 800 amps. The key is momentary. If I wanted cooling though, I think I'd go with spraying CO2 on the motor during the run. I have had the brushes and comm get warm, but there's enough cooling between runs to take care of that. Didn't think of that. Yeah, that would cool it down a bit to say the least. P.S.S. Mike, why are my pictures in that blog not showing up anymore? I see 'em. Anyone else? -- The Electric Motorcycle Portal http://www.electricmotorcycles.net/ Electric Motorcycle Listserv http://www.electricmotorcycles.net/listserv
Re: [ElectricMotorcycles] Ninja 250 conversion?
Here's a couple of thoughts. First for the drag racer amongst us: What if you could cool your motors before the race? I mean, like make some copper coils that can slip over them in the pits that run off to a refrigerant and get them really, really cold just before the run. Then slide the coils off and away you go? When I am dragging the kids around in the snow behind my motorcycle, I am usually pulling between 30 and 100 amps at very low rpms. This means the internal fan is not giving me any cooling, and my motor can get quite hot. I found a simple solution... In between rides if I see the motor is starting to heat up I have the kids grab a big armfull of snow and smash it on the motor case. So cooling between drag runs sounds like a great idea to me. In case you missed the videos from our recent snow event. http://www.youtube.com/watch?v=QEpY-wj-ZPc http://www.youtube.com/watch?v=YH2ektQA1g8 _ Search for grocery stores. Find gratitude. Turn a simple search into something more. http://click4thecause.live.com/search/charity/default.aspx?source=hmemtagline_gratitudeFORM=WLMTAG
