macribs wrote: ↑
Dec 31, 2017 10:33 pm
wturber wrote: ↑
Dec 07, 2017 8:14 pm
Well, if all the cars on the road had similar masses then maybe this would be OK. But with other cars being more massive and with a small vehicle going at speeds much faster than 25 mph, I see the small size a being a major problem in trading off cockpit integrity vs crumple zones. This is bad enough when colliding with objects of similar mass. But when the other object has lots more mass, I get really concerned. How do you dissipate the energy of the human bodies without crushing them too badly with those kinds of accelerations? Unless I'm missing something, I see this kind of vehicle as being appropriate for relatively slow speeds only. Certainly lots more protection than an e-bike. But it seems like it would be a lot less than for a conventional car.
Its like a reverse arms race. Someone got to be the first to say now is the time to stop this crazyness. We can keep building and buying bigger and safer cars, but that is kind of like the cold war. The arm race continues. Sooner or later others have upgraded to even heavier cars yet, and what do you do then? Well you trade in and you trade up. Cos you got to keep safe, right? Soon we all be riding Ford 6500 trucks or even tractor trucks just to feel safe.
Be the change. And pray for the best. And hope others will follow. That is the only way.
The issue is mostly speed. Car weight and size are secondary. And the "arms race" you describe is as much about comfort and convenience - perhaps more so - than it is about safety. That doesn't bode well for the small and less comfortable electric car.
I only have one life. I don't want to regularly drive at normal road speeds in a small light vehicle with an inadequate crumple zone. If I'm going deal with being cooped up in a car, it will need to have the necessary mass and crumple zone to give me a reasonable chance of surviving.
I'll ride an ebike and deal with the decreased safety because I enjoy that activity enough. I'll trade some risk of injury and death for a better quality of life. But I'm not going to trade that risk for some for some immeasurable public good.
In the end, the answer will be automated driving systems. That's "the way." But such systems probably won't be highly evolved in my lifetime. Though I hope they will be evolved enough by the time I'm in my 80s and am facing the inability to drive safely myself (assuming I live that long.)
"Commuter - DC Booster"
Iron Horse 3.0 hardtail - 48V / 1000W / 470rpm generic Chinese DD Hub motor (ebay)
8 x 36v 4.3ah 10s 2P battery packs - 1500W 30A DC Boost Converter delivers 54v and about 1000 watts peak
53T/42T Sakae Road cranks - 30mph+ on flats