24V Bottom bracket motor from Chuan-Xin Tech, Taiwan

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Lock   10 GW

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24V Bottom bracket motor from Chuan-Xin Tech, Taiwan

Post by Lock » May 07 2010 2:31pm

Image

Short unrevealing video here:
http://www.youtube.com/watch?v=TQQhOZKF ... r_embedded


Don't know anything more about this `cause my Chinese language skills are zero, but mfgr here:
(headbangers will want to crank the volume here)
http://www.bicycle-motor.com.tw/

tks
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Miles   100 GW

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Re: 24V Bottom bracket motor from Chuan-Xin Tech, Taiwan

Post by Miles » May 07 2010 5:20pm

Thanks for the link, Lock.

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Re: 24V Bottom bracket motor from Chuan-Xin Tech, Taiwan

Post by Miles » May 08 2010 5:35am


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Re: 24V Bottom bracket motor from Chuan-Xin Tech, Taiwan

Post by Lock » May 08 2010 6:22am

Good spotting Miles!
[0096] By means of the clutch 8, pedal driving transmission device 4 can be driven by the motor driving transmission device 2 so that the feet of the rehabilitating patient are passively forced to follow the rotation of the pedal crank 42 to perform pedal exercise during "rehabilitating mode". Thus, both effects in physical exercise for rehabilitation and enjoyment of beautiful scenery can be achieved concurrently.
:lol:

Don't much like the look of all those internal springs and pawls...
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cell_man   100 kW

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Re: 24V Bottom bracket motor from Chuan-Xin Tech, Taiwan

Post by cell_man » May 08 2010 9:40am

There's a Chinese company, Suzhou Bofelli, that do a very similar looking motor. I tried 1 recently and it worked quite well and had a freewheel on the crank along with a throttle. Aimed at the European market so only low powered and also requires a custom frame.
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Re: 24V Bottom bracket motor from Chuan-Xin Tech, Taiwan

Post by Miles » May 08 2010 9:57am

How quiet was it, cell_man?

If it's a direct drive motor at circa 70rpm, it will be no surprise that it's low powered :mrgreen: The patent above does include a version with a planetary gear stage, though.

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Re: 24V Bottom bracket motor from Chuan-Xin Tech, Taiwan

Post by cell_man » May 09 2010 6:34am

It was pretty quiet from what I remembered but I only had a quick spin, inside and at low speed. It felt reasonably strong for a 250W setup but nothing special, but it's not going to at that power. There were a few companies using the motor on their ebikes, all aimed at the European Pedelec market. Bofelli didn't actually have a stand at the show AFAIK.
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