Japanese ebike pics

mr.electric · Jul 15, 2009

I am in Japan for a few weeks. I have been seeing these panasonic and yamaha ebikes everywhere. I a crowd of people you can easily see some bikes pull away quickly and others slowly gain speed. The ebikes are all crank drive. I have not seen one hub motor. It actually has a small sprocket next to the crank sprocket that drives the chain. The motor battery unit could probably be retro fitted to another bike easily. They all have Lithium packs too.

mr.electric · Jul 15, 2009

Motor system pic 1

mr.electric · Jul 15, 2009

Motor system pic 2
It is hard to see but the chain passes through a part that looks like a rear derailer cage right after passing over the crank sprocket. The spring loaded derailer cage has an idler and a drive sprocket. The crank sprocket has a one way bearing so the pedals don't spin when you are under power and not pedaling.

mr.electric · Jul 15, 2009

Spec sheet. 250 watts - WEAK!
I think there is some sort of wattage regulation.

mr.electric · Jul 15, 2009

The charger looks very similar to a drill battery charger.

mr.electric · Jul 15, 2009

About $900

kentlim26 · Jul 15, 2009

Thank you for posting the Japanese ebike. i had been wondering for a long time about japanese ebike. I can't find anything much information in the flickr. Crank drive the chain, it also works alittle bit like cyclone. more discription about their ebikes, i will like to know more. thank you

enjoy in japan tour. Nice food, especially the fruits taste different.
kentlim

Sacman · Jul 15, 2009

DeeJay lives there in Japan. He could probably also point out what other ebikes are available there.

JS Tyro · Jul 16, 2009

mr.electric said:
Motor system pic 2
It is hard to see but the chain passes through a part that looks like a rear derailer cage right after passing over the crank sprocket. The spring loaded derailer cage has an idler and a drive sprocket.

A chain tensioner so that you don't have to fiddle with rear wheel position for chain tension. Not required if the bike had a rear derailleur instead of a gearless or internally geared hub.

E Moped · Jul 16, 2009

Check out the Panasonic titanium ....... Brushless /.... like the old Giant Lafree lite

liveforphysics · Jul 16, 2009

That 26v 3.7Ah battery assuming it had an infinite C-rating, would last <40 seconds of accelerating my bike.

It's only packing the energy of a typical moderate bike rider pedaling for 20mins. I'm packing 1,800% of that amount of energy, and I still feel like I want more battery capacity.

John in CR · Jul 17, 2009

liveforphysics said:
It's only packing the energy of a typical moderate bike rider pedaling for 20mins. I'm packing 1,800% of that amount of energy, and I still feel like I want more battery capacity.

The more you have, the more you want. That is till it's so much you start scaring the girls. :shock:

Now that I've got 2.7kw on my daily rider, all I can think about is adding another motor or 2 and more batts.

John

mr.electric · Jul 19, 2009

I have noticed that people tend to ride bicycles at a much slower pace in Japan. Even though everyone is in a hurry to get to work they ride bicycles very slowly. I think they think they don't ride for exercise. It is like walking to the corner store. You would only run if you were in a hurry to buy something.
So the small battery pack is sufficient for slow moving short distance rides. Most bikes I see only have one gear.

liveforphysics · Jul 19, 2009

John in CR said:
liveforphysics said:

It's only packing the energy of a typical moderate bike rider pedaling for 20mins. I'm packing 1,800% of that amount of energy, and I still feel like I want more battery capacity.

Click to expand...

The more you have, the more you want. That is till it's so much you start scaring the girls.

Now that I've got 2.7kw on my daily rider, all I can think about is adding another motor or 2 and more batts.

John

I enjoy the girls most when scared John

I would never fit into Japans bicycle scene.

Japanese ebike pics

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