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  1. D

    Motor lifetime

    In the for sale new section, a guy that is selling QS motors is claiming that they only last 3-5 years before the "steel" "loses its magnetization" and the steel needs to be replaced to bring back efficiency. Since QS builds a large percent of the motors that are re-branded and sold for...
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    Tilt switch for master battery disconnect relay (contactor)

    Hi, I was wondering if anyone has played with putting a tilt sensor (few dollars from digikey) circuit in series with the master battery switch. The motive is to disconnect the battery in case of a crash. Two fears, the throttle gets stuck on, either mechanically our through a short and the...
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    Avoiding fake batteries - how?

    So, I'm looking at various battery vendors trying to made sense of bulk buying some 18650 size cells. It seems everything comes from china, even the "made in Japan" or "made in Korea" batteries. Not to disparage anyone, but it seems from my reading that you are almost more likely to get a...
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    Planning first ebike. Need some advice

    Hi Everyone, Planning my first ebike build. Been reading these forums for a month now, and I'm sure some of the answers are already here somewhere, but some are a matter of opinion based on experience and goals, so I would like feedback that takes my goals and build concept into account. A)...
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