Hunka Hunka Burning Love Posted August 2, 2016 Share Posted August 2, 2016 My Ninebot One E+ hasn't let me down ever since I bought it, but on some of these crazy steep hills I'm braking while going down often scare me a bit. I still have to buy a tether. I don't overspeed going down a hill as that is surely a one way ticket to faceplantville, but even at regular under 22 kph speeds, I wonder what would happen if suddenly something shuts down or overheats? I'm guessing I would fall backwards while the wheel shoots forwards down the hill. Do the MOSFET stay relatively cool when doing controlled, prolonged descents? Except in a full battery overcharge condition, would you ever expect a wheel to fail while going slowly down a hill? Does the steepness of the grade have any effect on heat produced at the controller or BMS? I guess that if a MOSFET fails the wheel would likely have increased resistance to rolling so it wouldn't just free wheel down the hill? It might go tumbling, but the back EMF should resist the wheel from spinning freely almost like a built-in emergency failure brake? Link to comment Share on other sites More sharing options...
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