Thanks Trex, the 500w model does interest me, although not UK street legal, which does put a downer on the whole event!
But let's not open that can of worms up again.
But let's not open that can of worms up again.
Bafang 8fun CD 36v or 48v ?
- Thread starter Rohloffboy
- Start date
Well...have I stepped on a land-mine, or what!!??
It just so happens that one of 'the two obvious choices' has indeed got back to me this evening, so I know where my money is going now...This is clearly a very influential site!!!
All joking aside, I am really grateful for the helpful nature on here - I'm a bit humbled by it, to be honest - and impressed. Thank you!
It just so happens that one of 'the two obvious choices' has indeed got back to me this evening, so I know where my money is going now...This is clearly a very influential site!!!
All joking aside, I am really grateful for the helpful nature on here - I'm a bit humbled by it, to be honest - and impressed. Thank you!
RB, the latest ones (denoted B) have different/supposedly better internals and they changed the mosfets in early 2015, there are still plenty of older ones about for sale though, so always ask your vendor for the engine code (should be NCR not ECR) as there's still loads of old ones for sale on ebay, etc.
Agreed on the cottage industry bit, but it's gaining momentum in the UK and in a few years will be quite a booming little industry from the conversations I've had with "normal" MTBers and motorbikers (my latest Norco DH build is for an ex 2x British Superstock Champion)
I'd be more than happy to share my limited knowledge and sources with you if you want to build your own, i'll pm you on here with my number.
Agreed on the cottage industry bit, but it's gaining momentum in the UK and in a few years will be quite a booming little industry from the conversations I've had with "normal" MTBers and motorbikers (my latest Norco DH build is for an ex 2x British Superstock Champion)
I'd be more than happy to share my limited knowledge and sources with you if you want to build your own, i'll pm you on here with my number.
I think that the 500W is favourite, but given that one might as well be hung for a sheep as a lamb, I might now consider the 750W...
I could be wrong, but is the 750w unit not physically larger than the 500w model, and also 48v not 36v, not that either makes a difference, but just a point.
The 500w appeals to me, and of course better battery run time, than the 750w model I would argue.
Either way as you say, the gallows await!
The 500w appeals to me, and of course better battery run time, than the 750w model I would argue.
Either way as you say, the gallows await!
No mate, the BBS02 48V 500W is just a 750W motor that has been turned down to 18A instead of 25A...we've been playing around with ours and have found that 18A/500W is ideal for where we ride, as we don't want to be propelled over the edge of a cliff when negotiating a tight singletrack
Depends who you listen to! Some e bike sites insist that the 500 + 750 are exactly the same motor... I don't have a clue!
The BBS01 250/350/500 are all different beasts, but you are right in assuming the BBS02 is the same motor, just programmed differently, albeit badly, from the factory
Ahh...programming - that seems to be another hot potato. I think I'll leave that until the damned thing is on the bike and working!
Motor:
•Bafang BBSHD 1000w 48v (1455watts peak)
•Custom controller settings with 100% throttle enabled at PAS-0 and no speed limit (unloaded wheel spinning at 102kmh with 46T)
•46 tooth chainring (74.1km/h top speed on flat)
•189 RPM at 58.8v (factory settings 160 RPM maximum)
•4.8kg motor
- Controller: 30A or 40A? USB programming available
Battery:
•Homemade 14s 5p 58.8v 14.5Ah battery pack capacity
•1,5 hours 57.1v fast charge (6A 350w charger set at 57.8v)
•2,5 hours 58.8v charge (6A 350w charger set at 59.2v)
•3.65kg battery pack transported inside my backpack connected to the bike with XT90-S high discharge anti-spark connector.
•70x NCR18650PF Panasonic High Current cells
•Waterproof "bare cells" pack style for better cooling
•No BMS for 100% charge (4.2v per cell) = 100% performance!!
•Range (with BBS02 motor): +/-26km in the city / 36km continuous full throttle with only few stops
•Bafang BBSHD 1000w 48v (1455watts peak)
•Custom controller settings with 100% throttle enabled at PAS-0 and no speed limit (unloaded wheel spinning at 102kmh with 46T)
•46 tooth chainring (74.1km/h top speed on flat)
•189 RPM at 58.8v (factory settings 160 RPM maximum)
•4.8kg motor
- Controller: 30A or 40A? USB programming available
Battery:
•Homemade 14s 5p 58.8v 14.5Ah battery pack capacity
•1,5 hours 57.1v fast charge (6A 350w charger set at 57.8v)
•2,5 hours 58.8v charge (6A 350w charger set at 59.2v)
•3.65kg battery pack transported inside my backpack connected to the bike with XT90-S high discharge anti-spark connector.
•70x NCR18650PF Panasonic High Current cells
•Waterproof "bare cells" pack style for better cooling
•No BMS for 100% charge (4.2v per cell) = 100% performance!!
•Range (with BBS02 motor): +/-26km in the city / 36km continuous full throttle with only few stops
The standard programming is crap and not user friendly at all, I recommend you use it as supplied for the first few miles to scare yourself on tight sections with big drops, then if you survive, have a look at Karl Geislers blog to see what's possible and change the settings to where you feel right.Ahh...programming - that seems to be another hot potato. I think I'll leave that until the damned thing is on the bike and working!
Thanks SW...Some of this I understood - the rest; not so much! Bear with me, I'm a newbie!
Lol...heavy, back-breaking backpack and crap mileage...not what I'm looking for SW
On the other hand, the washing machine motored bike we talked about did 86.68mph at Elvo last August at the World Wheelie Event
...but that's about the same speed as the Honda RS250 it was based on lol
6x12v lead/acid batteries for this build, just to get it going...I fitted CBR400 fairings, but did no other work on it (weight loss stuff)...watch this space for next year as we've got a "guy" looking at batteries/rewinding the motor and I'll put it on a diet with better suspension/tyres etc...it's still road legal too with zero road tax lol...oh and it only has to run over a standing mile, not quite the 250mph the turbo bike is running
Anyway, we digress...where's the off-topic-smillie
Anyway, we digress...where's the off-topic-smillie
No idea on the elec side, it was all done by Mark (lecturer at Bradford Uni), next years batts will be done by Jimmy at Insat/BGA...all I do is ride it lol
...and again off-topic and I'm sure there's a thread I started about top speed eBikes...off to look and update...
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