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    tires: should you try to balance between durability and speed/efficiency?

    When choosing tires for an e-bike do you try to balance between durability and speed/efficiency? (for ordinary paved road use, about 40-50mm wide tire) Or should you go straight for durability and flat-resistance since you have the extra assist to overcome a stiff, slower, but durable tire...
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    mid-drive durable cassette for Micro-Spline cassette hub?

    considering a mid-drive BBHDS(?) conversion of a bike with a micro-spine cassette hub that has a 12sp cassette. After conversion I won't need 12 speeds of course, and won't need as much of that range either. But it would be really good to have a durable cassette to use with the mid-drive. Anyone...
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    Grin Tech offline? anyone hearing from them?

    Have a big order with them from June but haven't had any communication, not hearing back from my query email... Wondering if any of you are hearing from Grin or if I should be worried.
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    e-bikes as a new vehicle type, not the same as bicycles but also not anything like motorized vehicles we know

    I'm new to e-bikes and a long-time cyclist who also likes motorcycling but hasn't done much of that in a while. The thread about the Japanese response to introduction of fast illegal Chinese-sourced e-bikes, made me wonder whether I'm being too limited in how I think about the e-bike and maybe...
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    best rear wheel rear-hub conversion kit?

    What rear wheel, rear-hub, conversion kits should I be looking at for quality and performance? Lots of eBike conversions (hub or mid-drive) emphasize low cost in order to just get started ebiking and try it out. I've been using a Bosch mid-drive eBike, and now I want to try a rear-wheel...
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