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Comment Re:Must a turbine blade be INSIDE a cargo hold (Score 1) 176

Even better, imagine a really big flock of sparrows, with each sparrow grabbing one of the threads attached to the turbine blade! Trained sparrows. Don't forget they need to be trained to fly to the proper location.

African or European?

I don't know.

(Several people already beat me to the helicopter joke.)

Comment Re: Legal/illegal bikes (Score 1) 146

Class 1 and 2 e-bikes limit assist to 20 mph, not 15. You can ride them faster than that, but you have to provide the power. 20 mph is well above what most recreational cyclists can maintain on a flat course, so if these classes arenâ(TM)t fast enough to be safe, neither is a regular bike. The performance is well within what is possible for a fit cyclist for short times , so their performance envelope is suitable for sharing bike and mixed use infrastructure like rail trails.

Class 3 bikes can assist riders to 28 mph. This is elite rider territory. There is no regulatory requirement ti equip the bike to handle those speeds safely, eg hydraulic brakes with adequate size rotors. E-bikes in this class are far more likely to pose injury risks to others. I think it makes a lot of sense to treat them as mopeds, requiring a drivers license for example.

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