• Kinglink@lemmy.world
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    8 months ago

    As far as I read/understand, nope. But if it does limit the assistance to 28 miles an hour, that might be required if the bike goes above that speed. (Note: that’s only the point where the power would stop assisting, not the fastest speed the bike can do.)

      • QuaternionsRock@lemmy.world
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        8 months ago

        I have a Class 3 (28mph), it’s actually not too bad. That assumes the brakes are well-maintained, though, and as we know there are no inspections for e-bikes. I’ve seen some terrifyingly bad brakes on normal bicycles, so I can’t imagine what some people’s e-bikes look like.

        It should be mandatory for Class 2 and Class 3 e-bikes to have hydraulic disc brakes imo. I have mechanical disc brakes, and I have to tighten them at least once a month. It seems unwise to trust that the average person would also do that. Rim brakes are right out; they have nowhere near enough braking power for the speed and weight of most e-bikes.

      • QueriesQueried@sh.itjust.works
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        8 months ago

        Most people that do longer rides would be fine with that. On downhill sections you can hit that easily enough, and there’s wind too. It’s definitely fast, but it’s fine enough. It doesn’t matter what you’re driving or riding, you always drive to the conditions anyways.

        • Treczoks@lemmy.world
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          8 months ago

          Yes, you can easily get that fast, but can you also brake fast and reliably enough, too, so humanity is safe around you?

          • Saik0@lemmy.saik0.com
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            8 months ago

            If you agree that humans can control a car going 75mph, then a bike going 28 isn’t an issue.

            • Treczoks@lemmy.world
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              8 months ago

              Yes, but a car has actually appropriate brakes for the speed they are going at. With bikes, even good brakes are not really up to such speeds.

              • Saik0@lemmy.saik0.com
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                8 months ago

                Go ride a bike… Grab the left brake as hard as you can. You will change your mind.

                • Treczoks@lemmy.world
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                  8 months ago

                  I did way more than 1000km/month on my bicycle back in my time. I know what happens when you are stupid enough to break with the front wheels only. Even with disk brakes on both wheels you don’t have enough contact with the ground to ride at such speeds in a traffic-safe way. That’s why I object to the idea that a bike with 28mph would be safe, and would definitely require insurance for such a vehicle.

          • QueriesQueried@sh.itjust.works
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            8 months ago

            The braking characteristics are not all that different from a normal bike to an ebike, provided they weren’t deliberately ignored. Ebikes having a lower centre of gravity also helps this. If you want to whine about ebikes going 28m/h, you should also be complaining about 80% of the cyclists out there.

            • Treczoks@lemmy.world
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              8 months ago

              The braking characteristics are not all that different from a normal bike to an ebike

              That’s the point. That’s what makes them dangerous.

              And: If cyclists only did 28 meters per hour, they would actually be quite safe :-)

              • QueriesQueried@sh.itjust.works
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                8 months ago

                I feel like you’re missing that the brakes on current (decent/non-shit) bikes are quite satisfactory. And that cyclists normally dont ride at 28mph, unless going downhill. And that regardless of vehicle, it is up to the rider to be safe for the conditions.

                • Treczoks@lemmy.world
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                  8 months ago

                  It is not the brakes as such, but braking, which has a number of factors. One key factor is friction between wheel and surface. Your brakes might bring your wheels to a quick standstill, but that might not stop the bike.

                  And the 28mph stem from the point that there are electric bikes that go up to that speed.

                  • QueriesQueried@sh.itjust.works
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                    8 months ago

                    Yes, locking up your wheels is bad. The same is true on a car. It is good that on small mechanical systems with feedback, it is easy to not lock up the tires.

                    On top of that, many ebikes have regenerative breaking, which makes it easy to maintain a good speed.

      • Blackmist
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        8 months ago

        Honestly the motor should be cutting off well before that speed.

      • njordomir@lemmy.world
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        8 months ago

        I ride a class 3 and 30mph is not that bad. I regularly hit that coming down hills, even on a non-ebike. It does require your attention to be on the road and it would hurt if you wiped out. My fastest ever was 44mph

          • njordomir@lemmy.world
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            8 months ago

            Its largely by state here in the US, but it is kind of staring to converge on similar guidelines.

            In Colorado

            Class 1: The electric motor provides assistance only while the rider is pedaling and stops assisting at 20 mph.

            Class 2: The electric motor can propel the bike without pedaling, but stops assisting at 20 mph.

            Class 3: The electric motor provides assistance only while the rider is pedaling and stops assisting at 28 mph.

            All must be less than 750 watts, but it doesn’t specify how that is measured. Also, these rules aren’t reliably enforced.

            My city just has a 20mph limit on urban trails and tolerates ebikes that don’t do stupid stuff and ring their bell for peds.

              • njordomir@lemmy.world
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                8 months ago

                I’ll run a test at some point. Definitely faster than a car, but my bike has nice brakes. Not every cheap Chinese budget bike is going to have these brakes.

                Also, because my ebike is relatively light/average, there is a “wind wall” at around 20 mph where aerodynamics become more effective than pedaling. Sitting up and stopping pedaling when I’ve been hunched over pushing hard will quickly bring me back to 15-20 mph. I don’t know where this wind wall is on a heavy ebike with fat tires, a heavy rider, and a rack full of luggage.

                To the point of braking for pedestrians, on paved trails, I always ring my bell until people acknowledge me in some nonverbal way and I slow down for dogs because they can be startled by fast bikes. I’ve had many peds thank me for ringing the bell on a trail and I’m convinced if everyone did it, 2/3 of the bike/pedestrian animosity would instantly dry up.

                Cars don’t care around here. They only see their phones, traffic lights, and the back of the car in front of them.

                • Treczoks@lemmy.world
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                  8 months ago

                  Cars don’t care around here.

                  That’s what they say about bikers (especially electrical) here in the pedestrian zone and the sidewalks, too.

                  • njordomir@lemmy.world
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                    8 months ago

                    Odd, may I ask about your approximate geography? My area is very suburban and bikes mix with peds better than cars here because most of our streets are 6 lane roads with 40-55 mph speed limits. (45-70 mph actual speed) If the speed limits were 25-35 mph I would probably ride on the road a lot more.