Cephalotus wrote: ↑
Mar 02, 2018 5:22 pm
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.
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)
They're certainly nice systems, but the comparison to Apple is apt - if you couldn't repair Apple products yourself.
The older 37V systems are rock solid. I've only seen a few failed BMS boards on those, and it's almost always obvious physical damage (something shorted out and really cooked the board). And, yes, the consoles look good - won't argue there. A bit dated after 15 years, but still slick. Those systems should last a very long time.
The 48V systems are a "Sell when nearing the end of warranty" type trainwreck. They're nice, when they work, but for some reason BionX screwed up, badly, with the BMS boards, and a ton of the BMS boards fried the output transistors. It's a beautifully modular setup inside the battery pack - so it shouldn't be hard to replace the board (no soldering required), but BionX wouldn't sell battery parts, even to authorized dealers. Only full packs. I imagine they lost an awful lot of money doing that.
And, yes, they moved from German components to Chinese components. I expect that has something to do with it.
They built "throwaway systems." And most people, burned once by that, never would consider another BionX. Their solution to an I2C system with a weak battery was, "Well, we might be able to give you a loyalty discount on a brand new $2000 system..." - because they didn't believe in maintaining their older systems or keeping long term customers happy. It's a very short sighted move, IMO.
I suppose I have some of my summer projects cut out for me...