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  1. igashosparks

    Trouble Opening a QSmotor (clone?) 8000W motor

    Where did you source your Qs205?
  2. igashosparks

    Trouble Opening a QSmotor (clone?) 8000W motor

    Got the halls swapped out.. what a PIA that was. Between peeling off whatever was covering the hall circuit board and to trying to get the hall wires through little holes already filled with solder.. I believe it took a good 4 hours. I also didn't realize one needed monster truck force to...
  3. igashosparks

    SOLVED: Blown Fuse on New Stealth Bomber Clone

    Thank you for the ferrofluid recommendation! I was wondering what that stuff was for, just watched a pretty good video on the use.. placing an order for it now. I'll have to look into HubSinks as well.
  4. igashosparks

    SOLVED: Blown Fuse on New Stealth Bomber Clone

    I put the motor through some pretty significant abuse.. these hill grades are upwards of 25%, I had the throttle pinned a good about of time, barely moving and/or peddling and barely making it up the hill.. or stalling completing and having to push. The bike is 140lb-ish, and I'm about 210lbs...
  5. igashosparks

    Trouble Opening a QSmotor (clone?) 8000W motor

    I believe it was a combination of the motor overheating (after a 45 minutes of uphill abuse, very steep grades) to the point of melting the solder? (not sure what the melt point of the solder that they used). in combination of the circuit board being pulled to the right (bad craftsmanship)...
  6. igashosparks

    Trouble Opening a QSmotor (clone?) 8000W motor

    UPDATE:. My gear puller arrived today.. (way bigger spread then needed...). The cover separated from the stator like butter using this device. No heating or removing the flywheel required. Now onto replacing the halls.. they are indeed a hot mess.
  7. igashosparks

    Trouble Opening a QSmotor (clone?) 8000W motor

    Hi All, I'm trying to open my 8000W (likely clone) QSmotor to replace a failed hall sensor. I got it halfway opened, but can't get the remaining outside panel off to expose the Hall Sensors. There is a BMX style freewheel sprocket attached to the threaded axle (going through the motor)...
  8. igashosparks

    SOLVED: Blown Fuse on New Stealth Bomber Clone

    Ah, that does make sense then.. So, the slower I go the faster I overheat at full load.. The Controller has a Motor Temperature Sensor and shutdown, but do not think there is an actual sensor in the motor.. so to your point about installing one. ugh! Therefore, if I was pushing more...
  9. igashosparks

    SOLVED: Blown Fuse on New Stealth Bomber Clone

    Should I start a new thread or continue here? I do not know what the temperature was at the time of failure.. nor do I see myself installing a sensor into the motor. but interesting, I really shouldn't be pushing at all the capabilities of the motor.. My max Amps coming through the...
  10. igashosparks

    SOLVED: Blown Fuse on New Stealth Bomber Clone

    I'm going to mark this one as solved.. Not sure if there is an official way to do that, for now.. I'll just change the title. Ok.. So, I finally had received my BT dongle for the Sabvoton controller.. and was able to verify that the builder did not properly limit the controller to the max...
  11. igashosparks

    SOLVED: Blown Fuse on New Stealth Bomber Clone

    Of course.. I didn't even consider attaching to the Fuse connectors for the positive cable... I knew I had to cut the negative for the inline shunt, but was stressing over having to cut into the positive cable as well. Makes perfect sense. I'll have to figure out a proper mount for the multi...
  12. igashosparks

    SOLVED: Blown Fuse on New Stealth Bomber Clone

    I must have sent you the wrong link to the amazon battery that has the continuous output at 60amp.. The one that I did link was the battery that I'm eyeing as a replacement: NBPOWER 72V 40Ah Lithium Battery, Ebike Battery with 150A BMS and 84V 10A Charger for 8000W Enduro Bike, 8000W Ebike...
  13. igashosparks

    SOLVED: Blown Fuse on New Stealth Bomber Clone

    @amberwolf I'm about to purchase the inline multimeter as you recommended: https://www.amazon.com/bayite-6-5-100V-Display-Multimeter-Voltmeter/dp/B013PKYILS May I ask what you used/did to tap into the negative cable? Did you use a T tap? or something similar?
  14. igashosparks

    SOLVED: Blown Fuse on New Stealth Bomber Clone

    I believe 60 Amp Max continuous isn't that uncommon from my surfing of what's available on Amazon for a 72v 41Ah battery.. it's definitely 60Amp, not 6.. the marketing guy confirmed as a typo. I mean, at 100Amp continuous.. I would only get ~40 minutes on a charge, no...
  15. igashosparks

    SOLVED: Blown Fuse on New Stealth Bomber Clone

    I got this conversation back from the battery manufacturer, I can't tell if this guy doesn't know what he's talking about.. or he's just in a rush: :?:
  16. igashosparks

    SOLVED: Blown Fuse on New Stealth Bomber Clone

    Last question, then I think we can put this thread to rest, at least until I am able to log into the controller and power back up the bike and start running some of these tests.. can you verify which controller parameter get's set to 80Amp, (the max draw that the batter is capable of)...
  17. igashosparks

    SOLVED: Blown Fuse on New Stealth Bomber Clone

    So this is a little confusing on the topic of fuses... According to the Bussmann data sheet.. their 80Amp fuse doesn't actually blow when it exceeds 80Amps of current, and it takes 100 seconds to 'melt' at ~150Amps.. let's say I mis-configure the limit setting on my controller, or for some...
  18. igashosparks

    SOLVED: Blown Fuse on New Stealth Bomber Clone

    @amberworlf.. Thanks again for all the useful information!.. just a couple of follow up questions. I love the idea of the wattmeter between battery and controller... looking at the wiring diagram on Amazon, is that shunt exposed circuitry? or do you insulate around the shunt as needed...
  19. igashosparks

    SOLVED: Blown Fuse on New Stealth Bomber Clone

    I believe some of this is starting to click.. please let me know if I need to course correction in my thinking here.. With a 41.6 AH / 72 V battery with a max discharge rate of 80Amp.. I still use an 80 AMP fuse with my existing china battery, and limit at the controller for max peak of...
  20. igashosparks

    SOLVED: Blown Fuse on New Stealth Bomber Clone

    @amberwolf I'm humbled by the effort in your response.. I will definitely be making a contribution. I'm willing to purchase a new sufficiently sized Battery with a properly configured BMS. Would it be in bad form to ask you for a recommendation based on what you know about my bike.. would...
  21. igashosparks

    SOLVED: Blown Fuse on New Stealth Bomber Clone

    Great suggestion.. I'll do that! thank you!
  22. igashosparks

    SOLVED: Blown Fuse on New Stealth Bomber Clone

    @SlowCo Here are the parameters that I've been able to find on the Sabvaton SVMC72100 controller, they appear to be adjustable Parameter settings, I haven't logged in yet to verify that these are what they are actually set at: Rated Phase Current: SVMC72100 is about 100A Max Phase Current...
  23. igashosparks

    SOLVED: Blown Fuse on New Stealth Bomber Clone

    I pulled the fuse, it's 80 AMP.. I would have thought larger, given a 72V battery and 8000W motor.. (if it's really 8000W, or am I thinking about that wrong.. I know there's lot's of variables)
  24. igashosparks

    SOLVED: Blown Fuse on New Stealth Bomber Clone

    SlowCo, thank you for the response.. I don't have the answers to any of these questions at the moment. I guess my first step is to install a new fuse, similar rating for now so I can power up the controller, login and see what the amp draw is programmed at. I'm not sure how I can get the...
  25. igashosparks

    SOLVED: Blown Fuse on New Stealth Bomber Clone

    I just received my Stealth Bomber Clone from an outfit in China called Coolfly Bikes. 8000W QSMotor SVMC72V100(M) Sabvoton sinewave controller 72V 41.6AH(China Battery) On the trial run, going about 35MPH / 56 KPH, after riding for about 20 minutes.. all power died to the bike, display went...
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