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Author Topic: The Copenhagen bike wheel.  (Read 1677 times)
stannn
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« on: July 16, 2018, 09:42:25 PM »

https://cleantechnica.com/2018/07/16/the-copenhagen-wheel-was-worth-the-wait-my-first-ride/
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GarethC
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« Reply #1 on: July 16, 2018, 10:01:25 PM »

$1500 though??
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Ted
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« Reply #2 on: July 17, 2018, 09:49:59 AM »

The linked Danish website are selling at 1500 not $1500 and it's not clear if that is for a whole bike or just this as an add-on. Bikes there are really expensive anyway.

But Copenhagen is about the one place in the world where you don't really need a motor assisted bike unless, maybe, you are using one of these.



* IMG-20160807-WA0006.jpg (155.43 KB, 748x998 - viewed 226 times.)
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TheFairway
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« Reply #3 on: July 17, 2018, 10:11:46 AM »

It will be for the wheel only. The IP is the seamless and sophisticated control rather than just any old motor and battery turned into an electric powered wheel.
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GarethC
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« Reply #4 on: July 17, 2018, 10:43:05 AM »

That's the thing though. I can see an all in one electric wheel with integrated motor and battery being useful and popular. Just switch out your existing wheel, perhaps attach a Bluetooth control to your handlebars, and you have an instant ebike. Easy to convert back too.

But very few people have 1500 to spare, and if they did, they could buy a whole separate ebike for that.

If this were 500, I think it would fly off the shelves. The parts involved should allow production and sale at this price with a still hefty profit margin.

Essentially same system available on amazon for 382...
« Last Edit: July 17, 2018, 10:50:04 AM by GarethC » Logged
TheFairway
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« Reply #5 on: July 17, 2018, 02:38:52 PM »

No not essentially the same as on Amazon. It's taken years for them to perfect the seamless user experience rather than a few days to cobble together. People in 'the know' really do 'get' this wheel. The developers are going to want something in return for their 6+ years development effort.
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knighty
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« Reply #6 on: July 17, 2018, 03:50:13 PM »

No not essentially the same as on Amazon. It's taken years for them to perfect the seamless user experience rather than a few days to cobble together. People in 'the know' really do 'get' this wheel. The developers are going to want something in return for their 6+ years development effort.

I used to be pretty big into ebikes. built half a dozen, all different kinds, learnt quite a lot

spec from the site says....

250watts
48volt 5.8ah


there's not enough space inside that hub for a decent 250 watt motor, 48v 5.8ah lion and a controller to all run reliably

it's probably 5.8ah plated capacity not usable capacity

they all produce heat, and the heat will kill the batteries - I guess they will have installed thermistors and power limits for the controller, to limit the generated heat

quick google for a photo of the internals shows the controller is very small, a bit too small if you ask me - it could be heat sinked to the case, but it doesn't look like it is in the photos I've seen


the problems is... there's not much point in having a very weak ebike, you might as well save yourself the weight if you're going to have to do the vast majority of the work yourself

250 watts for a few min and then hardly anything because it's already a bit too hot for the rest of your ride is pretty usless
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biff
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« Reply #7 on: July 17, 2018, 04:47:09 PM »

I would agree with you knighty, and
             You cannot expand it or add batteries to it. There is just too much stuff whilzzing around inside the hub, too close to the ground and.not waterproof,.
        Biff
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TheFairway
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« Reply #8 on: July 17, 2018, 06:11:49 PM »

No not essentially the same as on Amazon. It's taken years for them to perfect the seamless user experience rather than a few days to cobble together. People in 'the know' really do 'get' this wheel. The developers are going to want something in return for their 6+ years development effort.

I used to be pretty big into ebikes. built half a dozen, all different kinds, learnt quite a lot

spec from the site says....

250watts
48volt 5.8ah


there's not enough space inside that hub for a decent 250 watt motor, 48v 5.8ah lion and a controller to all run reliably

it's probably 5.8ah plated capacity not usable capacity

they all produce heat, and the heat will kill the batteries - I guess they will have installed thermistors and power limits for the controller, to limit the generated heat

quick google for a photo of the internals shows the controller is very small, a bit too small if you ask me - it could be heat sinked to the case, but it doesn't look like it is in the photos I've seen


the problems is... there's not much point in having a very weak ebike, you might as well save yourself the weight if you're going to have to do the vast majority of the work yourself

250 watts for a few min and then hardly anything because it's already a bit too hot for the rest of your ride is pretty usless

Well the many years they have been on sale don't seem to bear this out. This is not a new unit, but an update of earlier generations. So it has a proven track record. Probably due to the amount of ongoing development and refinement it has had over the prior 6 years or so.
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knighty
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« Reply #9 on: July 17, 2018, 10:22:45 PM »

after reading a few reviews I think my comment of...

Quote
the problems is... there's not much point in having a very weak ebike, you might as well save yourself the weight if you're going to have to do the vast majority of the work yourself

250 watts for a few min and then hardly anything because it's already a bit too hot for the rest of your ride is pretty useless

problem is if you've never ridden anything else you don't really have anything to compare it to

plus, I think there's some kind of placebo effect, where you imagine it's more help than it really is
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