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re: The Chinese Scooter Thread | Products from small & unknown brands
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spoth001Originally Posted by
There is no diversion in topic IMO, it's all about perspective and how you look it at. If you choose to cherry pick then there's no point for actual discussions. My Intention is to contribute and not debate. I'm open for a feedback always.I would be glad if you back up your claims that Ola and Ather are far better. Did you get to ride any Chinese EV before or do you have a comparison in place ? I hope you are not wearing patriotism on sleeve while making this comment. Don't get me wrong but I referred to some articles online where I found that Chinese have pretty good EV scooters. I also read that MI would be making EVs in India and they claim that their scooter is going to be mind blowing!! Well I hope they don't fare better than our homegrown brands. Try referring to this link: https://cleantechnica.com/ or some similar websites for better comparisons market wise.
I am not cherry-picking some random things. You made a tall claim that Chinese scooters are decades ahead in technology compared to Indian models. I am only talking about that. I clearly mentioned in my first reply why Indian scooters are much superior to Chinese scooters. Indian models have better range, power, performance, handling, quality, and smart features over Chinese scooters.What does it have anything to do with patriotism sleeve? Do you want me to ridicule Indian scooters and praise Chinese ones even though they are inferior in every important metric?I do read many EV-related websites including Cleantechnica. I am yet to come across EV 2 wheelers from China that are vastly superior to Indian models like Ather 450X, Ola S1 Pro, or International models like Zero motorcycles, Gogoro, etc... Xiaomi or Oppo may develop good scooters in the future but we can only talk about them when they are in the market. I am sure by that time, Ola, Ather, TVS, etc... will bring even better models than the current ones.
The current Specs:
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Hello to the forum and thank you all for the valuable information located and maintained in its databases, helped a lot to understand certain aspects I misunderstood at first about electrical motors.I recently got myself one of those rebranded Chinese EScooters classified as a bicycle in Austria mainly to use the bike lanes getting better through the city during commuter traffic but started to get bitten by the tinker bug. Its limited to 25kph (15 mph) but technically more scooter than bicycle, so I hope this isn't off-topic for this section of the forum.The one brand dominating here (lot of cheap spare parts on the local market) are coming from Hungary and are going under the brand "Lofty", with the closest to my model I could find from what might be the original manufacturer (or just internal Chinese OEM rebrand) being the zxmco H1/XN1Unfortunately due to the usual issue with OEM rebrands from China sold through an unknown amount of resellers to different jurisdictions with different adjustments there isn't much information on the different parts. So after hitting my own research limitation, the shop not having been of any help so farand "AI" just spitting out nonsense with the provided prompts, I was hoping to find some help here to fill in the blanks and get some directions on how to proceed getting the most out of the set up and what's possible.The goal is 200km min range, the more the better with one battery load at 25kph top speed.The pipe dream is something I can transform from a legal bicycle to a "legal" small street motorcycle with a 45kph (28mph) limit at the flip of a switch mid driveTogether with the driver and load the entire thing weights about 150kgMostly plastic meets poorly welded and screwed mystery metal all carried by tiny 2 10 inch wheels with a rear hub motor20kgS14 48V 78Ahrated at 50A - 100A Dischargeunknown BMS able to handle 100A according to the seller with a "Set" button the seller urged me to never touchFully loaded 58.8Vunknown brand of 3.6V li-ion, so no idea about C rating (not gonna open the metal box yet, warranty sticker)BLDC 120° Hub MotorUnknown brand/model "XZS 48/60-30-23"in the document its rated as 30 min - 0.4kw at 305rpm, I assume that is the continuous save output at nominal temperaturethe 48/60 are certainly the save voltagenot sure what the 30 stands for, is it for Watt or rpm times 10 or 100, the rated current in Amperethe 23 is also a mystery, same as above.As expected no information about kt, kv or kereally would appreciate the help on how to get more info on the motor.Unknown brand "DBN-DC 48/60-12G"VDC 48-60VCurrent limiter 30ANot sure what the 12G stands for, the MOSFETS maybe, obviously no idea what kind, Ampere...its has 3 Speed settings (I assume different percentage of max voltage send to the motor) and a display with very basic information that shows speeds deviating by between 5kph - 10kph from measured with a gps/5g speedometer (gps speedometer shows 20kph, feels like 20ish kph and display shows 34kph)As far as I can tell no way to program it but it has jumpers to plug and unplug with "functionality"one changing battery draw from 48v to 60v, tested it once with fully loaded battery at 58V, but no difference on felt torque, acceleration or top speed over a short distance uphillsecond jumper that has a sticker indicating if it is plugged a speed setting of 10/15/25kph and unplugged 20/35/45kph, though testing it with a gps speed tester, plugged-in the speed was in reality 5/10/15 showing 10/15/20 on the display and unplugged 10/15/20 on the gps showing 15/20/30 on the display - not quite sure though what it actually regulates, Amps, voltage?So overall the typical China package, you get what you pay for and I would really appreciate the help of the experience of the crowd to fill in the blanks on the motor.Going forward, I assume, after playing around with the Canadian ebikes.ca motor simulator, assuming mine is keen to a TDCM IGH 305rpm due to the 305rpm in the official papers, the most straight forward upgrade would likely be a ~60V ~60Ah Li-Ion battery to reach lower range at higher top speed with worse Wh/km with average crowded bike lane speeds.Second the controller is obviously either manipulated or/and hot garbage; I don't really mind the wrong speedometer but it might lead to unnecessary discussions with bike traffic cops, so swapping it seems to be necessary sooner than later, wondering if it makes any sense going straight for a high end controller able to withstand way higher voltage and current, that can be programmed for my legal needs and the batteries safety while being re-usable for later projects if the tinkering bug bites more or just getting another cheap one for 50' from the second market.Something I'm currently consider is, as there is theoretically enough space for the S14 and an additional S17, to jury-rig something to be able to switch between which battery pack the controller draws from together with the aforementioned 40v/60v jumpers - that would raise the overall load to bit over 170kg, but extend the range to maybe 450km as the 48V set up has, if I understand it correctly a better wh/km at lower average speeds and the 60V set up a better one at "higher" average speeds making it in my mind possible to reach the optimal wh/km at different speeds and have plenty of Wh to go without having to load on board, being able to doing multi day "bicycle" trips into the mountains.I couldn't find similar projects in the forum and would be also curious if something like this would even be technically possible while driving.Thanks for any feedback and thank you again to all for this well of information.
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