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supercurio last won the day on October 14

supercurio had the most liked content!

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About supercurio

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  • Location
    Stockholm, Sweden
  • EUC
    Inmotion V10F, Kingsong 16X, Veteran Sherman V2 (CST C6004), Preorders: V12&S20

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  1. The same happened on my V10F a few months back, it's annoying for sure. Fortunately unplugging the battery and plugging it again allows the wheel to restart just fine. The annoying part is that I cracked a bit a side cover when opening the wheel these tabs are hard to get out. 0 issue with the wheel asides from that.
  2. This is the typical mainboard burning itself up, no other damage it seems according to the provided pictures.
  3. Aside of overheating (too much current) and arcing (too much voltage), the motor itself doesn't have a limit for torque at any speed. The "only" limit for speed is then how much battery voltage is available to push the desired current through the motor coils for the required torque (to fight the wind & rolling resistance), against the voltage generated by the motor as back EMF, which increases with rotation speed.
  4. Still mixing up Ah (capacity) and A (current) here. There's no such thing as "4A battery" (except it you talk about how much current it can deliver safely, but that always depend on cooling, it's something else)
  5. Same as @Chriull: a 40V lithium-ion battery is not possible. It's neither a multiple of 4.2V (max voltage for 1 cell) or 3.6V (nominal voltage for 1 cell) Then Ah: Amperes per hour is a unit of capacity, whereas A is a unit for current (speed of charge/discharge) Some clarification is needed: photos maybe? In the meantime, please don't try to plug and charge anything! Some of the operations you are considering would likely result in a battery fire, and might burn up your home.
  6. Apple Watch runs Watch OS, it's a variant of iOS. EUC World is an Android application. They're the two dominant mobile/wearable platform, with no compatibility.
  7. https://lygte-info.dk/review/batteries2012/Sanyo NCR18650GA 3500mAh (Red) UK.html Measured capacity: 3345 mAh at 0.2A (12.275 Wh / 2946 Wh total) 3264 mAh at 1A (11.850 Wh) - more realistic for an EUC chill ride on Sherman Then the Sherman discharges the cells only down to 3.15V, so that's even less capacity. No 3500 mAh cell type, including Samsung 35E and LG MJ1 store 3500 mAh in tests, it's mostly a marketing name it looks like, not representative enough to get a sense of the actual capacity. Same with the 2700 Cells called 50 something, like the Samsung 50G:
  8. The reduction in battery capacity seems pretty significant if you're comparing 3200 Wh (Sherman) with 2700 Wh (Abrams, EX.N) The thing tho... Sherman has 240 cells, each with 12.42 Wh capacity. Total: 2976 Wh. That's not 3200 or 3100 as advertised. (I wonder how they were not fact checked and corrected for false advertising) But at least, it's not that different from 2700 Wh. In practice, 2700 Wh wheels get a range pretty close to a Sherman when riding together, including on long rides. Sometimes a 2664 Wh Nikola+ or EX.N would show a higher voltage, sometimes lower. It's hard t
  9. Thanks and good to hear you fully recovered. I see, some sort of onboarding would be a good start, describing in simple terms what the safety mechanism that'll keep you alive are.
  10. Yes correct, I would consider safety what's regarding the risk of fire, and weather-proofing how it handles the rain. These 2 aspects are not particularly related to the battery pack & controller voltage, but are associated with electronics design / QC, and waterproofing in the design and assembly of the unit.
  11. This might be the point of higher voltage. The current standard is 100.8V & 70kph max speed (free spin 105 kph), a configuration which puts a lot of stress on the controllers for low speed accelerations and climbing scenarios. It's nowhere near as bad on a Nikola+ which has a free-spin of "only" 77 kph, giving it an easier time producing low speed torque. It climbs well and without fuss. Instead, 126V (or more later) might be the main way to make 70kph+ wheel work reliably - at all speeds. I don't want to hear "this is a high speed wheel, of course it'll burn if you try to cli
  12. When the headlights are on, will the fan blow air heated by the LEDs onto the board? The commander heatsink is beefy and should get plenty of airflow from the wheel well however when riding at speed. You're right @div I recall the teardown and it doesn't get any airflow from anywhere, my bad. Seems like an obvious design flaw. We know that Shermans which air duct gets obstructed overhead consistently: this is basically the Commander's design There's no doubt the controller will handle a lot of amps to make this heavy wheel responsive. It's concerning if the High Torque version w
  13. Thanks! So a 120 cells pack in 30s4p would be the same as 24s5p in terms of loss, efficiency and operating temperatures, addressing @Jason McNeil's concern following.
  14. Higher voltage will draw less current from the packs, however for the given power output used by the controller, each cell will be drawn the same current regardless of the pack configuration. I would be happy to learn from an explanation about what @Jason McNeil describes regarding internal cells resistance adding in a series configuration vs a parallel one. To output 360W with cells at 3.6V, I guess that: 1s10p pack would have each cell running at 10A for 3.6V 10A total. 10s1p pack would have each cell in series running at 10A for for 36V 10A total, however each cell res
  15. I have not the slightest doubt that it's a required move for one main reason: it is a necessary step to improve safety and durability. Full size electric motorcycles or electric cars have higher voltage packs (up to 800V) This is what allows them to get to the speeds expected from them, with the torque required to accelerate their hefty mass quickly. Increasing voltage is the key element that will allow to provide higher amounts of torque through the whole speed range, using in a better way the finite amount of power a battery pack of 120 cells can provide, to satisfy the self-bala
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