justin_le wrote: ↑
Mar 01, 2018 6:10 pm
I'm curious to hear more about people's stories good and bad with BionX setups. I know that it's far from the kind of kit that is popular by most the ES audience but at least here in Vancouver I still see far more BionX powered ebikes on the streets than any other single brand.
BionX is the only system that I know that allows me to use a 48V 30A controller as a perfectly legal "250W Pedelec" in my country.
The BionX regen is excellent.
The first ebike I ever rode was a BionX upgraded bike 10 years ago. The system was way to expensive for me in the early days, but after their 2011 market desaster (making the new 48V batteries in China and almost every single battery failed + lots of problems with their 4.x and 5.x software versions) inventure stock BionX bikes got dirt cheap over here for some years.
I bought plenty of them
There is also a small community in Germany that "hacked" the CAN bus and with the tools available many things became possible. Legal throttle for EU, voltage from 5V to 12V for the lights, motor temperature shown in the display, free programmable assistance modes, free programmable max regen and max power amperage (useful if you use cells with high energy density), obviously no speed limit for those that like it that way and many more.
I fact BionX is more configurable than many Chinese controllers if you know how.
There are also improvements to give mechanical support to the freewheels of the early motors (freewheels are a pain in the ass) and lots of possibilities what you can do with their batteries. extenders are easy, but there are options to bypass the balancer in the 48V units (which is shit) and even experiments with bypassing the current entirely.
Afaik someone even sells their own BMS for BionX now (never seen one in real life)
I do have around 10 BionX motors, most of them I bought very cheap (incl. sensor and 48V 30A controller!)
I never bought a new battery (except when they came with the bike), I had been lucky with some used batteries, I was able to fix some, and with some I was less lucky. I fried one BMS which was my fault.
So overall I'm quite optimistic that my BionX bikes will last another 15 to 20 years. And after that you can open the motors and use them like any chinese motors with a external controller.
I even managed to upgrade my street legal 45km/h BionX sPedelec with a BionX d series motor.
Next project is s solar trailer, nut this is just for fun.
It's sad that there has been so little love for Bionx in this board. They have some things that are made really good. Even the first motors worked well with 9x or 10x gears and standard disc brakes, the built a hub motor with 3x internal gear hub, they have excellent regen function, I like their rather small display (sorry Justin, but I would never put that brain drain / CA monster on my bike handlebar), the new version even runs without display. Their SL motor was innovative (3.4kg) and their d-series is quite innovative, too.
Sdaly their stuff also has flaws. The old motor controllers got killed at high speed downhill, their sensor gets lose if you use to much oil (which many people do), you shuld switch on and of the system while riding, their connector is less than ideal.
The SL motor overheats quickly, the d-series can be noise and is almost impossible to open.
Some software versions have been flawed (imho everything from 6.2 is good)
On the other hand a 10 year old BionX system with 36V battery and old BionX motor (CAN bus) is compatible with their newest stuff....
In the end BionX is a story about bad quality, bad support and the whish to make much money very quickly without keeping the focus on high quality engineering. They wanted to grow as quick as possible, the wanted to earn more money producing their stuff in China (36V batteries have been built in Germany, afaik, and even today many of this batteries electronics still work fine)
Bosch on the other hand focused on quality and support. They also hade some failures in the early system, but they replaced or repaired it quickly. I don't like their system, but they sell millions of them and people and sellers are very satisfied and this is what counts in the end...