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    Copenhagen wheel

    It's actually the other way around. The vast majority of new businesses of fail, whether they're started by MIT grads or not. Either way, there are so many compromises required to make the Copenhagen Wheel a viable product, that it becomes a product that is only attractive to tiny prospective...
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    Copenhagen wheel

    You can make the argument that regen braking on an ebike is not cost effective. That's fine. Renen braking is really only effective at speed, involves more points of failure, and only gains <10 percent of energy consumed. Those are all valid arguments. But you can't really make the argument...
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    ≤2000w 96V charger ~$5

    The people driving this thread have already made it clear that they want to explore all the ways a person can hurt him or herself in playing with electricity, and that anyone who calls into question their lack of respect for the fatal energy in electricity is nothing more than a "nervous Nancy"...
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    ≤2000w 96V charger ~$5

    I keep waiting for this thread to end with a description of the explosion and fire that will inevitably result. I mean, there are plenty of quality, off-the-shelf chargers already available, and they don't cost that much to start with. This seems about the worst way to save money next to...
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    Riding Leathers

    Check out your local Army-Navy Surplus. Last year I picked up a genuine German cop, black leather motorcycle jacket for about $150. The best bit is that it says 'Polizei' on the back in big, reflective lettering.
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    Riding Leathers

    It's a bit nonsensical, to be honest, and a great example of how statistics are often misused and/or misinterpreted. The theory is this: a greater proportion of cyclists involved in accidents are wearing helmets compared to the full population of cyclists. Therefore wearing a helmet makes you...
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    Comments from strangers about your bike

    I've got about 800 miles on my bike now, and almost all the comments I get are positive. What bothers me is the people who *don't* comment. That is: the people (invariably in gigantic SUVs) who feel like they should be faster than anyone on any bike, let alone a beach-cruiser like mine. Off...
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    First Electric Bike Build

    The issue is the mounts. There are a couple aftermarket mount adapters, but they all look pretty sketchy to me. You could of course weld on your own mounts, but that's a whole other project on its own. Either way, brakes are not something you want to skimp on.
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    First Electric Bike Build

    Your goals are definitely achievable, and within your budget too. So that's great news. Here's a picture of my bike, which was about $2k all-in, including some rookie mistakes that added a couple hundred dollars to the cost that I could have avoided. My bike tops out at about 28 mph, and has a...
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    em3ev - controller needs to be changed or re-programmed?

    Paul @em3ev is about as rock-solid a vendor as you'll find referenced in this group. My experience with him has been brilliant, and you'll hear the same from many other very satisfied customers. I know when I bought my gear from him last year, the Bafang kit you ordered was not even on offer. I...
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    ≤2000w 96V charger ~$5

    Well, I *have* been looking for a way to add a steam whistle instead of a horn. Too bad it would only work while charging. That said, I'm not sure the place to cut corners is the one place on such a bicycle that might explode. It's a bit of a Pinto solution -- seems a good idea right up until...
  12. S

    Thought about bringing my ebike down to MD for a week...NOPE

    By the way, danjpendleton, in case I didn't make this point loudly enough: YOUR BIKE IS GOD DAMN BEAUTIFUL. That board-track cruiser thing was what I was chasing, but you hit it far more elegantly: If it were me, after having read the OCPD statement, I would still take my bike to the beach...
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    EM3EV charger switch voltage?

    For general use, you're going to want to use the middle position. This will charge the battery to about 90 percent of its total capacity. The 'II' position charges the battery to its full capacity, but you should only really use this if you're going to ride it right after it charges. Even so...
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    Thought about bringing my ebike down to MD for a week...NOPE

    I don't know that I'd worry about it, to be honest. The season is over, for one thing, and you're far less likely to have a problem now than in the middle of July or August. For another, ebikes are not exactly common anywhere in the US. It's new and exotic enough, and falls under so many...
  15. S

    Looking for ebike shop owners

    I hate to be Johnny Raincloud here, but think hard about what you're doing before committing a lot of time to it. Ebikes are not an established market, so what storefront locations there are might not be around for long. A dataset like this is only useful if it's large and current, and it will...
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    BBC Auto Slideshow: The 10 most beautiful bicycles

    Of particular note is the Engeenius Cykno, 57lbs, 250/500W, pedal-assist. Yes, that is real Italian leather covering the battery and electrics, and you can ride this beaut' home today for just $22,000. Did I mention the leather? There are some other interesting ones in there, like this...
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    I cant find a decent bike

    Well. For regen braking to work, you need a controller and battery system that can work in both directions, which is more complex than operating in one direction. Switching the flow of electricity creates additional stress on the controller components, meaning a two-way controller is going to...
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    I cant find a decent bike

    Are you sure you've thought this part through? Regen breaking adds cost, complexity, and additional points of failure, while it's only going to boost your efficiency by around 10 percent. And if you are thinking of using *only* regen braking, that's madness -- a failure in your electrical system...
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    Can I adjust the acceleration with the CA V3 ?

    Have a look at the users guide. There are adjustable settings for throttle ramping, but I'm pretty sure you'll need the programming cable to make the adjustments.
  20. S

    On a trip; ebike is broke.

    Before you go nuts taking everything apart, does your bike have a e-brake? I had a similar issue where the ebrake would engage intermittently, cutting off the engine. Simply disconnecting it solved the problem; reconnecting it only to one brake lever solved it permanently.
  21. S

    What sort of range and speed to expect from this kit?

    I run this motor on 48V with a 10t winding and can hit 30. You have a speed winding in 8t, so I don't doubt you'll hit 24 mph even on 36V, though it may take a bit of time to get there.
  22. S

    Building a beach cruiser/ board track bike

    Very nicely done. I greatly admire your design sensibilities. Proof:
  23. S

    New to ebike - need help puting together system

    My bike has never seen a hill, so I'll leave this one. Get the V3. It's a major upgrade. And yes, it does report the motor temperature. It's basically a board with all the matching terminations onto it as your kit. It's useful for quick diagnostics, but doesn't do anything that a proper...
  24. S

    New to ebike - need help puting together system

    This is very similar to the setup I have, although I'm on 26" wheels, and a much heavier bike. When I put it together, I estimated my range would about 25-30 miles with minimal pedaling on flat ground, not accounting for wind. What I'm actually seeing is a range closer to 35 miles, as long as I...
  25. S

    Building My Frist EBike

    Be careful if that's an aluminium frame. Aluminium is brittle. A hub motor on aluminium dropouts will cuase a rather dramatic shattering of the frame. If you are on the bike when it goes boom, you will not have a good time.
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