RWP
1 kW
Are we happy now? :lol:
New Bafang Crank-Drives
- Thread starter d8veh
- Start date
teslanv
1 MW
It's so new and shiny... Not like my dirty one.RWP said:
nukezero
10 kW
RWP said:
RWP - how and where did you fabricate that mount for the fish-type battery pack on the downtube?
Rusty123
100 W
RWP said:
What tool did you use to tighten the locknut?
RWP
1 kW
I made it myself. The down tube is a standard size, don't remember exactly the size now, and I got some 1/4" wall tubing. Machined them for socket head cap screws and then slit the tubes in half. I machined a flat for the bar that the battery mount attaches to and drilled and taped the bar for threads.nukezero said:
RWP
1 kW
It's on hand tight. Waiting for something better to properly tighten it. I used the Park tool on another install but damaged the lock nut and I do not want this to happen again.Rusty123 said:
pjgold
100 W
My kit arrived from EM3ev yesterday and here it is.
BBS02 750w and 11A frame pack on a Focus Urban Planet 3 with Alfine 8 speed.
Outstanding service from EM3ev.
BBS02 750w and 11A frame pack on a Focus Urban Planet 3 with Alfine 8 speed.
Outstanding service from EM3ev.
tomjasz
1 GW
Beat me! :lol:Aushiker said:
pjgold
100 W
Aushiker said:
The actual shipment only took 7 days, however I have had the unit on order for some time waiting for stock and configuration.
Paul recommended for this setup with this battery that I reduce the max amps for longevity so it has been set to max at 22.
He also gave me a refund when he dropped the unit price after I had already placed my order
speedmd
10 MW
Stellar. Love the all black look. Time to get out the grill paint and spray the rotor centers, hardware caps and those goofy little brand logos also. Black chain?
Amazing little kit. Best luck with it.
Has anyone come up with a normal large water bottle size battery? Two of them on something like this would make it hard to detect.
Amazing little kit. Best luck with it.
Has anyone come up with a normal large water bottle size battery? Two of them on something like this would make it hard to detect.
amigafan2003
1 kW
pjgold said:
How have the amps been limited?
tomjasz
1 GW
By using the software the vendor has available to set those parameters in the controller. Not unlike some other controllers.
Spacey
100 kW
I've got only 2 x 250w 36v and 1 x 48v 750w Bafang mid drive kits left in stock.
More on the way though, the amps can be limited in software and as long as you are careful when inserting the motor into the crank tube you should not cause any damage to the threads.
More on the way though, the amps can be limited in software and as long as you are careful when inserting the motor into the crank tube you should not cause any damage to the threads.
tomjasz
1 GW
Anyone have their hands on the software to share?
PM?
PM?
Spacey
100 kW
Unfortunately part of my distribution deal with Bafang is that only the dealers can have the cable and new software.
I would of course be more than happy to program your controller for you for just the return postage cost. You just need to unscrew the controller part of the motor, should fit in a jiffy bag.
I would of course be more than happy to program your controller for you for just the return postage cost. You just need to unscrew the controller part of the motor, should fit in a jiffy bag.
amigafan2003
1 kW
tomjasz said:
OK - Paul said he wasn't doing custom programming, that's why I asked.
Spacey
100 kW
What I would not be happy doing is overclocking the controller, it will throw up an error anyway if you try to get more power out of it than it is designed for. Which if you think about it is a good thing, how many motors and controllers have we all blown up due to pushing them just that bit beyond what is reasonable 
For my corporate builds I actually dialled down the amps a bit, but dialled up the initial acceleration curve which gave the ride a nice powerful feel to it.
For my corporate builds I actually dialled down the amps a bit, but dialled up the initial acceleration curve which gave the ride a nice powerful feel to it.
nukezero
10 kW
pjgold said:
What shipping service did he use?
I had a problem with him last year in the summer because he was unable to find a carrier to ship items to me in the USA due to battery hazardous material problems. It caused more than a months delay.
That battery pack is great but it sounds like it's still not able to handle the entire power requirements of the 750w 25A bbs-02?
Spacey
100 kW
25A is doable for sure, recently built a silly fast off road 8T MAC with Cycle Analyst v3 for a customer and the new battery packs of Cellmans. It's been running really well with the Infineon 9 Fet controller and CA limiting the max amps. Lot's of power and 32mph is plenty fast enough for a mountain bike.
25A is only really the initial peak and settles down quite quickly after the acceleration phase, even more so with the 12T Mac motors.
25A is only really the initial peak and settles down quite quickly after the acceleration phase, even more so with the 12T Mac motors.
nukezero
10 kW
Spacey said:
What do you think pulls more amps at 48V?
A BBS02 750w at 31MPH or a Mac 8T at 31MPH ?
teslanv
1 MW
nukezero said:
It takes all the BBS02 has to get to 31MPH. - Figure the full 25A Continuous if you want to go that fast on the flat with no pedaling.
nukezero
10 kW
I'm not sure if someone answered this yet, but in theory, can you mix two different battery types in parallel to get more amperage performance?
Right now, i've got a 48V 10Ah polymer pack. Peaks out at 54.6V (charger spec). Assuming I buy one of those new style triange frame mount pack which uses the cylindrical cells, and those are 48V 11Ah... would that be a problem?
The only problem is I won't be able to guarantee that both packs have the same voltage coming off the charger. One could be 53.8V after settling and the other could be 54.1V. In parallel, I'm assuming it becomes the average of the two?
Right now, i've got a 48V 10Ah polymer pack. Peaks out at 54.6V (charger spec). Assuming I buy one of those new style triange frame mount pack which uses the cylindrical cells, and those are 48V 11Ah... would that be a problem?
The only problem is I won't be able to guarantee that both packs have the same voltage coming off the charger. One could be 53.8V after settling and the other could be 54.1V. In parallel, I'm assuming it becomes the average of the two?
tomjasz
1 GW
Hah! I could likely buy a new programed controller for the postage there and back. :lol: But a serious thank you for the kind offer!!Spacey said:
Spacey
100 kW
I would say the Mac motor but unless you are doing big hill climbs where max power is needed all the time it isn't a constant 25A pull on the battery pack.
We tested the BMS overload on the battery and it does cut in at around 28A if I remember correctly, so does a great job of protecting the cells. With both motors (if the infineon programmable controller is used with the Mac motors) you can have variable real time preset settings. Well to be exact, on the Bafang kit you can have 3 to 9 assist settings with variations of speed and power on each setting. The Mac motor with infineon give you 3 settings which can be set on the throttle 3 speed switch. When you hit a monster long hill just dial the amps down a bit so that you are not hitting the battery at full whack for several miles, but I really don't think its an issue.
Efficiency wise they kindof work out pretty similar, 31mph on the flat is going to use high amps but not allways the full 25Amps. It's long hills that are the killer of smaller motors but I am a fan of both types of motor and have a personal bike with each of them in.
We tested the BMS overload on the battery and it does cut in at around 28A if I remember correctly, so does a great job of protecting the cells. With both motors (if the infineon programmable controller is used with the Mac motors) you can have variable real time preset settings. Well to be exact, on the Bafang kit you can have 3 to 9 assist settings with variations of speed and power on each setting. The Mac motor with infineon give you 3 settings which can be set on the throttle 3 speed switch. When you hit a monster long hill just dial the amps down a bit so that you are not hitting the battery at full whack for several miles, but I really don't think its an issue.
Efficiency wise they kindof work out pretty similar, 31mph on the flat is going to use high amps but not allways the full 25Amps. It's long hills that are the killer of smaller motors but I am a fan of both types of motor and have a personal bike with each of them in.
