What about Q70 motor hub?

General Discussion about electric vehicles.
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cmmodem   1 µW

1 µW
Posts: 1
Joined: Jan 10 2017 4:58pm

What about Q70 motor hub?

Post by cmmodem » Mar 12 2018 11:33am

Some ower of the Q70 engine of bmsbattery?
Weight, characteristics, how is it going.
Thanks!.

markz   100 GW

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Joined: Jan 09 2014 11:38pm
Location: Alberta Canada

Re: What about Q70 motor hub?

Post by markz » Mar 17 2018 4:42am


paradad   10 µW

10 µW
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Joined: Jan 02 2019 1:43pm

Re: What about Q70 motor hub?

Post by paradad » Nov 04 2019 3:32am

Anyone got any information on how these perform?
Efficient? Will they cope running at 48v? Any issues with typical British weather? ... I'm thinking here of mild wet salt-laden roads :)
I'm thinking of getting one of these for a Brompton.
Koga World Traveller + BBSHD = 50 miles a day @ avg 25mph

sleepy_tired   100 W

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Joined: Jul 02 2019 11:46am

Re: What about Q70 motor hub?

Post by sleepy_tired » Nov 20 2019 3:52pm

They are not going to be nearly as nice as the newer small hub motors from Bafang, like the G310. Less efficient, but also lower cost. You can probably make up the difference by spending the money you save on higher capacity batteries. As long as you keep the motor within specs it shouldn't make a big difference either way.

But on Brompton I believe it uses non-standard dropouts. So these motors may not actually fit.

Check out:
https://www.ebikes.ca/product-info/brompton-kit.html
The front fork uses tiny 8mm dropout slots and a narrow 75mm hub width, the rear tire folds into the bottom bracket eliminating most mid-drive options, and the triple fold adds challenges to the cable routing and component location.

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