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    Water bottle battery

    Another water bottle battery I happened across: TGE 6Ah-36V water bottle battery - 36V Series batteries - Porducts - Xi'an TopGun Power Co.,Ltd. water bottle battery - 36V 10Ah - TOPGUN (China Manufacturer) - Motorcycle Parts & Components - Transportation Products - DIYTrade China No...
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    Tongxin motors (250W/190RPM/80mm) for sale

    Yep - exact same kit (without the brake levers). I'm in central London but postage and packing anywhere in the UK should be around £8 so not too bad. Daire
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    Tongxin motors (250W/190RPM/80mm) for sale

    Yes I think that would be fine. I'm just not that good a wheel builder to attempt it myself. I'm not sure what performance differences there are between the "real" 100mm tongxin and these 80mm versions (with 100mm axle spacers). If anyone wants to buy a set to try this out then I and others...
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    Tongxin motors (250W/190RPM/80mm) for sale

    UPDATE: All components now sold! Hi, I have 1 of these motors for sale after a miscommunication with "Billy" resulted in him sending me a 100mm motor with a gap for a "roller" brake. In other words a 80mm motor with a spacer and longer axle ("100mm")...
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    What motor did I just buy?

    Well I did include a link to tongxin's site and a schematic of the 100mm motor but I guess the whole "roller" confusion rendered that moot. I also have a couple of controllers that came with them that I can probably flog too. Dunno what the going rate is on them - £20?
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    What motor did I just buy?

    Looking back through my emails with Billy I see where the misunderstanding came from. He asked at one stage whether I wanted a "80mm roller motor" to which I said "no" but I did clarify and say that I wanted a "Tonxgin friction roller" motor. I guess my meaning for "roller" (friction gears) and...
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    What motor did I just buy?

    Well thanks for the clarification. I guess I'm going to have to suck up the loss on this one. I ordered the motors from "Billy" at "desheng-intl" but I guess all the recent 80mm brompton orders he has been getting from this forum has confused him slightly so I ended up getting a little bit of...
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    What motor did I just buy?

    So I tried to buy a 100mm Tongxin motor from China but it doesn't look how I expected it to. Can anybody identify this motor? The "SWX" part of the model number hints at a Bafang/8Fun but I would have thought it would have a brand marking. It also looks like it is a 80mm width motor with a big...
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    Low power - Low weight - Low assist

    A couple of people have ordered Tongxin motors from a guy in China who resells various EV bits and bobs. Although it does take time he seems to be reliable. http://www.pedelecs.co.uk/forum/electric-bicycles/6289-anyone-been-touch-billy-dongguan-desheng-recently.html By the pictures it...
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    Low power - Low weight - Low assist

    I was thinking of buying some Tongxin motors from "Desheng" next week but buying them direct as samples might be easier/quicker. Have you now placed an order and gotten a price quote? Do you have to give them a fake company spiel to get "samples"? I think Tongxin lost interest in doing small...
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    Low power - Low weight - Low assist

    I'm also pretty interested in a light low assist bike. I guess the Cytronex are about the best you can do atm. If you use a 2kg Tongxin and a low Ah 2kg battery you can just about do it sub 5kg but really the best way to reduce weight is put it on a really light bike. If I was rich I'd try one...
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    Water bottle battery

    If only you could get the controller circuit size down - it'd be cool to be able to fit the controller and battery in a single water bottle with an all in one connector. I can dream....
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    My DIY Electric Brompton project

    Can I ask how much you paid for the two sets of motors and how much the postage cost? Did you have to pay duty on this end too? I am also interested in doing the same thing but lacing them into a 700cc wheel. I have a Bafang 36v/250W atm but I would prefer to have something more akin to the...
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    Water bottle battery

    One other thing you may want to consider is that you will need to put the controller somewhere too (e.g. in a saddle bag). I quite like the concept of the "little frog" saddle post battery containers used by EWC which you can buy from a few places now e.g. 36V Lithium Ion Little Frog ABS...
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    Anyone been in touch with Billy at Dongguan Desheng recently?

    I'm still toying with the idea of buying some Tongxin motors to play with but it does seem like quite a hoopla to get them this way. Every month I hope there will be a better/cheaper way but these motors have been around for a couple of years now and it doesn't seem to be getting any easier...
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    Water bottle battery

    Something like this perhaps? No idea how you would go about buying one mind... It would be nice if you could buy this and the tongxin motor easily as the £1000 price tag on the Cytronex kit does seem pretty steep. 24V/36V Lithium Battery for E-bike (water bottle style) - Detailed info for...
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    Group Buy on Tongxin Motors

    I'd be interested in buying a Tongxin kit (or two) to play with. When you say that you paid around £130 for a full kit do you mean the motor+controller+battery? How long did it take to receive the order? I assume the tongxin is the motor that they call the "DES-F13" on their electric bike page...