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A comment on Show HN: I Designed and Built an eBike. Parent comment

Re:Show HN: I Designed and Built an eBike by KennyBlanken on Wednesday February 23, 2022 @08:47PM (#30449301)
An average "likes to do a couple 40 mile sporty bike rides a week" cyclist probably can do around ~150-200W continuous and maybe peak for 10-15 seconds at around 750-1000w. A hill that takes 20-30 seconds to climb, less than 500W most likely. Depends on their weight and training.

Cargo e-bikes tend to be at or less than around 1kW. 750W is still considered fairly powerful, and 500W is much more typical and still plenty enough for even a cargo bike to get up a hill, with appropriate gearing. 250W is about the standard for low-end e-bikes.

2.4KW is gross overkill, especially if you're not doing direct drive. More watts just means you can go up the hill faster. This assist motor is driving the wheel through the rear derailleur so it potentially has a pretty wide range of gearing.

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Re:Show HN: I Designed and Built an eBike by gocartStatue on Thursday February 24, 2022 @03:55AM (#30452455)
250W pedal-assist only is all you can (legally) get as a bicycle in Europe. I have only one friend that can sustain 250W for hours (on a road bike), and he's a serious everyday "bicycle is the default vehicle" type. 250W is plenty for casual rides. Not judging the choice here, though, must be quite a beast ;)
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Re:Show HN: I Designed and Built an eBike by detaro on Thursday February 24, 2022 @03:59AM (#30452475)
To note is that these 250W are a relatively weird "continuous/average power" rating. There is lots of leeway in calculating this and peak power can be a lot higher, so a legal pedelec might easily deliver 750W while you accelerate or go uphill.
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Re:Show HN: I Designed and Built an eBike by gocartStatue on Saturday February 26, 2022 @02:22PM (#30480863)
That is true, 250W-rated electric engine can supposedly make 1kW for some time without damage. But if I understand correctly, EU law prohibits the "power driver" to deliver more than 250W.
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