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jacquesmyesterday at 11:18 PM5 repliesview on HN

So, this got posted again I see. A few years later: the pack is still going strong and has not - so far - shown any signs of wear. I've put close to 15000 Km on it now and there is no degradation worth mentioning, though I suspect that if I do a precise capacity measurement that it would definitely show some reduced capacity.

The really neat thing is that at the end of a long ride the cell groups still track to within 2 mV of each other, which is a strong sign that all cell groups are discharging equally fast and that there are no cells or welds that are causing problems. Of course with 17P the cells are only mildly exercised compared to what they would be going through in a regular pack.


Replies

neyatoday at 10:59 AM

The setup looks lovely! How heavy is it in real life? Just curious. Is it, say, as heavy as a small moped or motorcycle or not that big of a deal? My only fear of trying this out is if the bike falls on its side, how difficult it might be to lift it back up. TIA

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rsynnotttoday at 10:21 AM

> I hope this article will inspire people to look at e-bikes as potentially commuter car replacement, to send Bosch and other e-bike technology manufacturers a message that if they won’t supply what people need that they are going to have to live with people hacking their stuff

Did this ever happen?

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0xWTFtoday at 3:39 AM

What surface conditions do you ride this in? I spent this morning on my Specialized Levo (1) and ran down the entire battery over the course of about 2.5 hours, covering 36 km and 1400 meters of elevation, much of the downhill being at "mach chicken", with drops, doubles, locked up dirt surfing, etc. There is 0% probability I would take this long range e-bike to that terrain. Which is fine. But I'm pretty sure your frame wasn't designed to carry this 22 pound battery or anything like it, so are you exclusively riding this on buttery smooth Dutch roads?

(1) a few years old now, but keeps up with my buddy riding the new-new version https://upway.co/products/specialized-turbo-levo-comp-carbon...

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bradortoday at 11:13 AM

How’s your sperm? That’s quite a strong field. R squared and all that.

jadenPetetoday at 2:04 AM

I'm curious, how much does this weigh? I've ridden e-bikes a few times, and it's always surprising how much heavier they are than ordinary bikes. I can't imagine how heavy this must be.

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