For me, (before I started building bikes/trikes specifically for this purpose) it would be this, and the intersection/acceleration thing (being able to reach my 20MPH max faster than the cars can is important in getting out of their way when I'm stuck in front of them at a light, etc., cuz some of them are already very impatient about having had to stop at all, much less have to be slowed down by anything afterward (especially something small enough to knock off the road out of their way without much risk to themselves or their cars' paintjobs).Ykick wrote:I also frequently pull a loaded trailer so there's another variation of "cargo" handling bicycles which aren't technically cargo bikes.
It's all about freedom of choice and personal preference. I prefer to be able to go fast when I want, take off fast when I want, and go slow when I want. We are all different.... I for one am greatly appreciative of the fact that I can choose to do what I want, and not have someone else dictate to me what they think is best. The fact that you have asked this question at all is interesting.qwerkus wrote:I've been doing some reading through this forum, and keep wondering why people would put such strong e-motors on non-cargo bikes. I understand e-bike legislation changes from one country to another, and that in the US, you can build an ebikes thrice as powerful as in europe. Yet for me riding a bike as always been more about the combination of fun and exercise which seem to be lost once the vehicle comes with a big motor. For an instance, I tried a 500W bike last week because of my declining health and the many hills out there, and ended up completely overpowered by the machine, pedaling just in order to keep the PAS system going, but without putting any actual effort in it. Now I'm considering a 220W motor or less, which will give me far more range, and still something to pedal for. Of course, if I had to carry a 300Kg, it would surely be a different story. Speed is also not really a big deal for me: I have to stop every few blocks during my commute anyway. So my question goes to those commuters who don't ride cargos: what's the point of a 1000+W motor ?
I'm 2 weeks in to my first e-bike, here is my take so far. I'm a big guy and live in Seattle which has a lot of very steep hills on my commute downtown. I put an Ezee 250R rear geared hub motor on a 7 year old REI 29er Mountain bike. I need to tweak the settings on the PAS, but 80% of the time I'm at 200W assist (it's set up for 0, 200, 400w,....) while pedaling w/ a decent effort. Here is why I think more power is better (1) stop and go in the city: hitting the throttle to take off or get through an intersection is incredibly valuable, adds a lot of safety, and saves shifting down on the front chain ring. I often see 1000-1300W for 3-5 seconds to get going. Can't imagine not having that power in the city, would just be unsafe. (2) If you play w/ the motor simulators at Grin, you notice that if you don't keep the speed up, the efficiency drops off a lot. That is, on a steep hill if you don't have enough torque to keep you over 11-12 mi/hr, you might be putting in 1000W of electrical power, but you are only getting 3-400 W of mechanical work out, the rest turns into heat which is not good for the motor. So you need to think about the toughest hill you want to climb: If it's a short hill and you can pedal hard to keep the speed over 12 mph great. If it's a long hill and you'll run out of stamina, you need a motor big enough to keep you and the bike going >12 mph for the length of the climb. If you and the motor can't keep the bike over 12 mph, and it's a 5-10 minute hill, you are on your own (or have to live w/ very little assist) as the heat build up could damage the motor. (3) I've planned my commute so I only have 2 blocks of very steep hills, 10-15% grade, at a time, the motor at 1300 W + me pedaling can handle that, but by the end of the second block, I'm fading, slowing, and the motor is losing efficiency. As I ride more and strength builds it will probably get better, but the OP wrote about failing health, so I say get the power, then configuring the system to give you lots of low power PAS levels to dial in the assist just right. Use a few high power PAS levels (I prefer to just dial up the throttle) for safety and hill climbing.qwerkus wrote:... Speed is also not really a big deal for me: I have to stop every few blocks during my commute anyway. So my question goes to those commuters who don't ride cargos: what's the point of a 1000+W motor ?
I'm my casual observation, no speed is ever fast enough to prevent motorists becoming impatient and trying to pass unsafely, until you're going way too fast for your safety and that of others.liveforphysics wrote:Everytime you're passed by a car, it's a new opportunity to be killed by drivers even distracted for a moment. On an ebike that feels comfortable and safe to me to commute with, the rate of car passes approaches zero, and the safety and enjoyment and time of the trip are all better than cars could achieve.
On a low power ebike, things feel comparatively pretty sketchy to get through traffic.
You do so illegally. Electric bicycles are allowed almost everywhere, and electric motorcycles too.MadRhino wrote:We build powerful bikes, because we can.
Unfair? What is unfair is killing people and nature of this planet using an obscene amount of resource for transportation. What is unfair is using the street like anyone smaller doesn't deserve to live. As for the law, when it is applied to to citizens who are committing no crime, it is the most unfair invention of men.Chalo wrote:...
Building and riding an electric motorcycle under the pretense that it's an electric bicycle is not only illegal, but also unfair to those bicyclists and motorcyclists who abide by the law.