Bafang mid drive 250W or higher?

[Deleted member 4366]

You can have the best of both worlds by getting the 25 amp 36v 250w BBS01. It's basically a BBS02 with a special controller. It's legal and gives 66% more power than a standard BBS01. You can get them from Em3ev.com and some other resellers.

 

[anotherkiwi]

Ehhh??? Am I missing something here, no mention of it being alloy

Precialps specialise in CNC aluminium. Careful it is for the second generation motors with 7 screws.

 

[Thatscold]

Can someone link to an external controller needed for the gsm motor. I’ve googled KT controller, but I’m unsure exactly what’s needed. Also I don’t want another box/bag on the bike so can the controller be battery integrated or handlebar display integrated?

I like the idea of remaining road legal but maximising torque and power. So the gsm appeals from this perspective.

 

[Nealh]

BMSBattery sell the 09 dolphin battery controller for integration with battery it comes as a kit with LCD and kit.
36 or 48v option.
https://bmsbattery.com/controller/698-sine-wave-controller-for-09-case-controller.html

DASKIT in Germany do a battery integrated combo unit as used in Oxydrive kits, though whether they sell direct is unknown.

Other wise you have to use a box type controller.

 

[anotherkiwi]

Can someone link to an external controller needed for the gsm motor. I’ve googled KT controller, but I’m unsure exactly what’s needed. Also I don’t want another box/bag on the bike so can the controller be battery integrated or handlebar display integrated?

I like the idea of remaining road legal but maximising torque and power. So the gsm appeals from this perspective.

If you want to run it at 48v a controller out in the breeze would be my option. The motor seems to draw current differently from a hub motor, not more current, the same amount but probably ramping up more quickly. Some of the first testers had problems with weaker batteries and even I carved a huge chunk out of the useful life of my 10.4 Ah bottle battery. In any case the controller gets really hot.

Just before last weeks "incident" I switched back to 36v and power is just fine at 15A x 36v compared to 15A x 48v but cadence is better at the latter. I think that for normal use I will go for 11A x 48v. That means using this controller: http://www.pswpower.com/peng/iview.asp?KeyID=dtpic-2016-3F-39N8.50CQE with a C5 setting of 04 on the LCD3.

The one I am using now is here: https://bmsbattery.com/ebike-kit/695-s06sc-sine-wave-controller-for-central-motor-ebike-kit.html

I only have nice things to say about how smooth it delivers the power. The only problem I have with it is that I spin too fast naturally and get back EMF at the most stupid moments, my problem not the controllers fault hence my move to 12S 44.4v.

 

[Fordulike]

Precialps specialise in CNC aluminium. Careful it is for the second generation motors with 7 screws.

I've fired off an e-mail to them to confirm, coz if it is metal, I'll be pressing that 'buy' button pronto

 

[minexplorer]

I’m thinking about converting my mountain bike (Giant Trance). I’m currently approximately 100kg’s and I like the idea of some assistance getting up the hills. The bike is used predominantly off road.

Will a 250W Bafang mid drive have enough power, or will I be disappointed and regret not going for 500 or 750, or even the BBSHD?

The price and lower weight of the bbs01 is appealing (also road legal), but is it buy cheap buy twice?

it was exactly that for me buy cheap buy twice.i still like my bbs01b,i got the 350w. You will always be wondering what the grass is like on the other side of the fence tho.eventually u will give in an get a more powerful one ,an WOW so wish ud just done that originally. Extra weight of the bbshd with a decent AH 52v battery wont make any difference. A lot of the members on here have both legal and not.the old bill dont have any interest in e bikes,just ride it sensibly.

duuh just seen this is an old thread