4 ms·

That's a quite a look, reminds me a bit of something from the Fallout universe. I'm a bit surprised at the "pedaling charges the batteries" bullet point. That

That's a quite a look, reminds me a bit of something from the Fallout universe. I'm a bit surprised at the "pedaling charges the batteries" bullet point. That's extremely rare in the e-bike world. 25,000 mph top speed seems somewhat optimistic however. I assume it means 25 kph top speed, which is on the slower side for e-bikes.

speerer 2y ago
This made me smile, but I looked it up anyway and it turns out it's a non-SI abbreviation for kilometres per hour. https://en.m.wiktionary.org/wiki/kmph https://en.m.wiktionary.org/wiki/kmph Not common in my country, the UK, but maybe in India? I know the Indian language numbering system has different number groupings, so why not.
- joseda-hg 2y ago
  I mean, miles are so rare for non English speakers, that it didn't register to me as weird
bryanlarsen 2y ago
The correct abbreviation is "km/h", so kmph is closer to the correct one than kph. kph seems like a measure of insane acidity.
- Y-bar 2y ago
  If it's about bikes it's obviously about pressure of the tires: kph means kilo-pascal hours. In other words, accumulated pressure over time.
  - lostlogin 2y ago
    This sounds like the opposite of my bikes, where the pressure vanishes suddenly, too often.
aarroyoc 2y ago
> I assume it means 25 kph top speed, which is on the slower side for e-bikes. This is the maximum speed for an e-bike in many European countries
- masklinn 2y ago
  slightly more nuanced, it’s the maximum speed for assistance to be classified as a pedelec.
netsharc 2y ago
25000 meters per hour would be 25 km/h...
- moffkalast 2y ago
  0.25 ki-lakh-meters per hour
1024core 2y ago
In India, it is common to see "kmph" as an abbreviation for "kilometres per hour". "kph" is also used, of course.
Saris 2y ago
>I'm a bit surprised at the "pedaling charges the batteries" bullet point. That's extremely rare in the e-bike world. For the most part it doesn't make much sense for most e-bike users that have power easily available, the time required to charge a battery is a lot (average person puts out about 100-150W) and the average e-bike battery is 500Wh or so, 4+ hours to charge it by pedaling. A normal mid-drive has clutches specifically to prevent this from happening so you don't get drag from the motor while pedaling without the motor running. In countries where power is not as readily available it makes a lot more sense.
- askvictor 2y ago
  I would be more interested in a bike where braking charges the battery. For commuting, every traffic light is wasted energy, and cycling on the flat doesn't need much once you're at speed. A commuter with regenerative braking could probably have a much smaller battery, making it lighter too.
  - wigglewoggle 2y ago
    Regen braking is a thing for ebikes. I can't speak to OEM ebikes, but check out grin at ebikes.ca. They offer all the parts. There are some cool features too like setting a speed limit after which Regen activates, so coasting down a hill will recharge you and add resistance to keep you at a safe speed. The caveat is it doesn't make sense on mid drives because they freewheel when coasting
  - Saris 2y ago
    A hub motor ebike can do this with the right controller, assuming the hub motor has no clutch in it. But you don't gain much, there's not a lot of weight to slow down with an ebike so regen gives you very little back. You do lose the ability to efficiently climb steep hills with a hub motor, and they add a ton of unsprung weight if you have rear suspension which ruins its performance, so if that's your kind of terrain they're a bad choice. Would save on brake pads though.
    - ronancremin 2y ago

speerer 2y ago

This made me smile, but I looked it up anyway and it turns out it's a non-SI abbreviation for kilometres per hour. https://en.m.wiktionary.org/wiki/kmph https://en.m.wiktionary.org/wiki/kmph Not common in my country, the UK, but maybe in India? I know the Indian language numbering system has different number groupings, so why not.

joseda-hg 2y ago
I mean, miles are so rare for non English speakers, that it didn't register to me as weird

bryanlarsen 2y ago

The correct abbreviation is "km/h", so kmph is closer to the correct one than kph. kph seems like a measure of insane acidity.

Y-bar 2y ago
If it's about bikes it's obviously about pressure of the tires: kph means kilo-pascal hours. In other words, accumulated pressure over time.
- lostlogin 2y ago
  This sounds like the opposite of my bikes, where the pressure vanishes suddenly, too often.

aarroyoc 2y ago

> I assume it means 25 kph top speed, which is on the slower side for e-bikes. This is the maximum speed for an e-bike in many European countries

masklinn 2y ago
slightly more nuanced, it’s the maximum speed for assistance to be classified as a pedelec.

netsharc 2y ago

25000 meters per hour would be 25 km/h...

moffkalast 2y ago
0.25 ki-lakh-meters per hour

1024core 2y ago

In India, it is common to see "kmph" as an abbreviation for "kilometres per hour". "kph" is also used, of course.

Saris 2y ago

>I'm a bit surprised at the "pedaling charges the batteries" bullet point. That's extremely rare in the e-bike world. For the most part it doesn't make much sense for most e-bike users that have power easily available, the time required to charge a battery is a lot (average person puts out about 100-150W) and the average e-bike battery is 500Wh or so, 4+ hours to charge it by pedaling. A normal mid-drive has clutches specifically to prevent this from happening so you don't get drag from the motor while pedaling without the motor running. In countries where power is not as readily available it makes a lot more sense.

askvictor 2y ago
I would be more interested in a bike where braking charges the battery. For commuting, every traffic light is wasted energy, and cycling on the flat doesn't need much once you're at speed. A commuter with regenerative braking could probably have a much smaller battery, making it lighter too.
- wigglewoggle 2y ago
  Regen braking is a thing for ebikes. I can't speak to OEM ebikes, but check out grin at ebikes.ca. They offer all the parts. There are some cool features too like setting a speed limit after which Regen activates, so coasting down a hill will recharge you and add resistance to keep you at a safe speed. The caveat is it doesn't make sense on mid drives because they freewheel when coasting
- Saris 2y ago
  A hub motor ebike can do this with the right controller, assuming the hub motor has no clutch in it. But you don't gain much, there's not a lot of weight to slow down with an ebike so regen gives you very little back. You do lose the ability to efficiently climb steep hills with a hub motor, and they add a ton of unsprung weight if you have rear suspension which ruins its performance, so if that's your kind of terrain they're a bad choice. Would save on brake pads though.
  - ronancremin 2y ago