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Hello there, Forum, I've been lurking around since early May, when I decided to move on from my "Learner" wheel, the Airwheel X3 I've had nothing but bad experiences with KingSong as a EUC brand since I got this thing. I purchased a KS16 (Yes, the older model) with a 520Wh battery. Selections aren't as good over here, though now I know I can use ewheels for future purchases. My current retailer takes 3 days to a week to reply to my emails. First off, it arrived with a defect that made it show and perform as if it only ever charged up to 76%. I don't care what people say about not fully charging due to battery longevity concerns. When I charge a device, I expect it to show as 100% charged when the brick lights green. And yes, I've tried multiple chargers to no avail, and lacking a multimeter, I've chalked it down to a bad board or battery failure. Then the application on both Android and iOS. Holy moly, is it bad. I'm stuck on v1.20 and I can't seem to find any way to upgrade it. It's probably not a big deal, but I hate being stuck on outdated firmware, regardless of what device it's regarding. Then I had a puncture a good ways from home. Had to stroll it some 14 or so km. I did some research on how to take the wheel apart, bought a more rugged tyre for it, and eventually set to work. My biggest issue here, is that the screws used in this machine are bottom of the barrel, slag metal, and they are generally soft as butter in midsummer heat. Yes, my bits fit well into the screwhead, but that doesn't help when several screws had partially missing treads near the "tip" and decidedly did not want to go back inside, after I spent an hour slowly coaxing them out in the first place. The screw in question here, is the big ones connecting the chassis to the foot pedals. But it's a learning experience nevertheless, and I managed to repair the punctured inner tube and mount the new tyre. Of course, as luck would have it, yet another puncture sprung up, this time around the valve base. This happened literally on the first test-ride I did after my first repair endeavour. I have my doubts that I'll be able to fix it, and I also doubt whether the screws in this machine can handle being unscrewed and screwed back in once more. Have I just been very, very unlucky, or is there something I could've done differently? At the rate of correspondence I have with my retailer, I fear that the summer will be over before I get a chance to ride again, and every day I can't is worse for it. Pictured: New tyre mounted on the hub.
I finally have an i5 in my hands! I wanted to make a post to document the process as I test it as well as to try and answer any questions the community has. If there is a certain test or questions please ask and I will try to get everything answered. Currently waiting for the battery to charge before I start recording and testing. Super excited. First impression is that it is unbelievably thin. The width is almost identical to a standard glass bottle. IBC Root beer tested. It also is definitely light, I haven't weighed it yet but the shipping weight was 22 pounds as a whole so it seems to be on par with IPS claims.
Lately, GotWay's seemingly below average quality standards in combination with the risk exposure merely from the high speed these beasts allow, became the catalyst for a more generic discussion about Quality Management and Quality Assurance. As this is relevant for all EUCs regardless of brand, I suggest collecting our thoughts on this topic in a separate thread. To prevent a wild mishmash of ideas (and risking to loose sight of some important ones), I also propose to separate EUC Quality Management (Assembly / Production) - in this thread here, and EUC Quality Management (Product Design / Change Management) - in another thread. In this place I suggest to collect and discuss all measures we expect any responsible EUC manufacturer to apply to his production of any given (i.e. readily designed) EUC model to prevent Failure of the wheel to keep the rider in balance when operating the EUC inside the advertised margins, Secondary risks, like fire hazards, Failure of the wheel to complete a planned trip, Failure of advertised functionality/properties (e.g. Bluetooth, water resistance) Poor production quality reducing the lifespan of the EUC or its components (e.g. by corrosion), Poor assembly impacting the serviceability of the wheel (e.g. by using glue instead of screws), Incomplete delivery (missing/wrong parts, screws, etc.), Cosmetic imperfections. Is this list complete? Do you agree with the sequence of priorities? Once we settled on a common list of goals for production Q-management, what can we do directly and short term to make it happen? At least: to start a dialog with manufacturers and come closer to finding and implementing the desired balance between QA efforts and price impact for each of the brands we love? My suggestion: we develop a questionnaire for manufacturers listing concrete QA measures and ask for the current way they operate, their willingness to implement the measures, expected price impact and comments. Next, we appoint one Q-spokesperson per brand we love and care about out of our membership. If we find more than one candidate for a brand, we vote. If there is no candidate for any particular brand, tough luck, you're out. Personally, I would not exclude anybody (except manufacturers and their employees of course). An elected Q-spokesperson can be a dealer, "fanboy", accident victim or anybody else who cares enough about production quality and feels able and is trusted to communicate effectively with a manufacturer. Those Q-spokespersons present our questionnaire to their respective manufacturer, explain the context and the weight and reach of this forum they represent (5000 members and probably >50.000 readers; @John Eucist can you help with some impressive stats?) and collect their respective brands responses for us. Dealers may utilize this dialog to negotiate production of special Q-Edition wheels incorporating quality improvements defined by this process under the condition, that they may reserve exclusive rights for distribution for max. 6 month - after that, any special Q-Edition wheels need to be available to all sales channels. Does this approach make sense to you? Is it fair? Any more promising suggestions to move things quicker? Would you even consider being a Q-spokesperson, if so: what brand? Manufacturer Questionnaire: this will become a multi-page list of questions and must try to include all the "crowd intelligence" from our members. Just to get things startet, let me try to write up 3 examples: Quality Measure: Written/pictured Work Place Instructions Do you have written/pictured work instructions for every step of the assembly of every currently produced EUC model available for all assembly workers? Do those instructions clearly show, what parts to use? Do those instructions show, what tools to use and what the correct settings are (e.g. torque setting for electric screw drivers; pressure setting to fill tires, soldering temperature)? Do those instructions include cabling plans and show exactly, how cables must be routed? Do those instructions clearly show, which parts need to be secured for vibration or humidity with sealant, glue or tape and how it must be applied? Do those instructions include decision making, which parts are fit for assembly and how to identify parts, which are not? Do those instructions include measures against ESD damage to electronic parts (like wearing a ground strap)? How do those instructions prevent high current sparking during assembly? By enforcing a sequence of steps, which ensure equal levels of battery charge status and proper sequence of connection. By requesting the worker to charge the batteries to equal level? What is an assembly worker expected to do, if something "does not want to fit" according to plan? Make it fit? Ask a co-worker for help? Ask an engineer/manager for help? Do you maintain a "white list" of parts/components, which may be repaired when faulty (e.g. connectors, incorrectly seated tires)? If no, do you maintain a "black list" of parts/components, which must not be repaired (e.g. straightening of a bent motor axis; exchange of a single battery cell)? Do you agree to show the existing work place instructions to our Quality Spokesperson? Do you require a NDA for that? For those suggested measures, which are not in use yet: do you plan or consider introducing them? Quality Measure: Single Item Tracking Data Do you keep complete records, which assembly worker performed which assembly tasks per EUC serial number? Do you keep records of all parts and modules purchased from suppliers with the respective supplier batch IDs? If so, do you keep records of which parts from which supplier batches were used to build which EUC by serial number? Do you record all failed parts prior to assembly, during assembly and after (i.e. in complete units)? For every supplier batch consumed completely, can you evaluate the number of good vs. rejected/failed parts? If so, can you differentiate failed parts by EUC model, they had been consumed into (e.g. failed MOSFETs in model A vs. failed MOSFETs of same source/type/batch in model B)? Can you differentiate the above by firmware revision used in the affected EUCs? If so, is such an analysis possible with little effort or does it require substantial manual work? Do you agree to show these records (without price information) to our Quality Spokesperson? Do you require a NDA for that? For those suggested measures, which are not in use yet: do you plan or consider introducing them? If so, in the form of paper records or as an IT solution? Quality Measure: Incoming Goods Inspection Do you have a process in place that requires an explicit internal release before any incoming goods may be used for production? If so, what is the qualification of the person in charge of the release? Do you receive complete manufacturer batch information along with the goods delivered to you (i.e. can you tell precisely, which items have been produced in which production run)? Do you receive trustworthy documentation along with incoming goods about the quality category of the parts/modules (e.g. "automotive grade" certification)? Do you perform a technical inspection of incoming goods before release? If so, by visual inspection (100% or % of sample size)? by non-destructive functional testing (100% or % of sample size)? by destructive testing (% of sample size or number of items per batch)? What test setups are available to you (e.g. motor test stand; circuitry for main board stress testing, metering equipment for sensors or battery capacity)? If so, own equipment on site or option to rent/test externally? Do you keep manufacturing batches of incoming goods separated until consumption in assembly? Do you agree to show inspection and test protocols to our Quality Spokesperson? Do you require a NDA for that? For those suggested measures, which are not in use yet: do you plan or consider introducing them? If so, what testing rigs do you plan to introduce? ... to be improved/completed! Obviously there are more questions to ask, like own quality checks by the manufacturer during and after assembly ...