5 ms·
For reference, this is what 700W cycling looks like: https://www.youtube.com/watch?v=S4O5voOCqAQ https://www.youtube.com/watch?v=S4O5voOCqAQ
by meindnoch 4mo ago
For reference, this is what 700W cycling looks like: https://www.youtube.com/watch?v=S4O5voOCqAQ https://www.youtube.com/watch?v=S4O5voOCqAQ
- beached_whale 4mo ago1hp/750W or so sustained is insane power for all but a few and that is still for relatively short time periods.
- zozbot234 4mo ago1HP sustained is not insane for a horse. A human OTOH is a very different matter.
- bayindirh 4mo ago1HP is actually ~5 horses. There was a test trying to measure it. https://youtu.be/7qxTKtlvaVE https://youtu.be/7qxTKtlvaVE
- beached_whale 4mo agoOther way around, a horse does more like 5-15hp
- bayindirh 4mo agoYes, you’re right. My mind is foggy apparently. Thanks a lot. Unfortunately I can’t edit it anymore.
- solomonb 4mo agoThey don't make them like they used to
- voakbasda 4mo agoOne horse power is the rate a horse can sustain while working hard all day long.
- thm 4mo agoI can do 300W for 30mins - does that mean I can barely heat up a Pop-Tart?
- simondotau 4mo agoSpend 30 minutes charging a battery and you should have enough energy to turn any flavour of pop-tart into carbon flavour. Even without a battery, I could easily imagine designing an efficient single slice toaster that could handily brown a pop tart on a 300W budget.
- ProllyInfamous 4mo agoYou wouldn't need any sort of fancy toaster: anything small, rated >= 300W, would deliver cyclingpower from a rider of any skill.
- ProllyInfamous 4mo agoThat actually could toast a few batches of Pop-Tarts. If you like then "golden," perhaps the entire box.
- thewebguyd 4mo agoFor more reference how insane 700W is, the average FTP of a world tour pro road cyclist (i.e., Tour de France) is ~350-420W/6-7W/kg. FTP (Functional Threshold Power) being the avg you can sustain for an hour without fatiguing. My own is ~250W @ 3.12W/kg. I can't even hit 700W yet, let alone for over a minute. My 5 second power is ~640W. Crazy numbers.
- ProllyInfamous 4mo agoCan you still touch your toes? I doubt Robert could... hopefully your own practice leaves you more balanced.
- thewebguyd 4mo agoHaha, yes. Track cyclists are a different breed.
- kokada 4mo ago> Haha, yes. Track cyclists are a different breed. Lost the opportunity to say "bread".
- SoftTalker 4mo agoA trained powerlifter probably exerts a few kW on a heavy lift, but only for a second or two.
- xnx 4mo ago~3000 watts for 0.75 seconds (not counting pauses)
- jaggederest 4mo agoTalakhadze's 267 kg clean & jerk from 2021 is somewhere well north of 5kw output (I can't find hard numbers, but possibly even like 7kw) for fractions of a second during the second half of the clean. It's wild stuff.
- ProllyInfamous 4mo agoI am a nerdy blue collar electrician and that was incredibly interesting. Only 0.002kWH from that beast of a cyclist. I would suspect my equivalency to be about 1/3rd a Robert [unit of measure from vidlink].
- Tostino 4mo agoI'm sure he could have generated way more total energy if he wasn't trying to get get that max power.
- ProllyInfamous 4mo agoAbsolutely – he could'a toasted the entire box if he'd'a paced himself. But that was great youtubes.
- eks391 4mo agoI took several biomechanics classes as electives back in my undergrad, and in one assignment I remember comparing the energy outputs between the human and robot equivalents of different tasks, whether or not the robot was humanoid in how it was designed. The most impressive think that stuck with me is that humans are incredibly efficient, from an energy perspective, in anything we do, compared to machines. Every time we delegate a task to a machine, we are using several orders of magnitude of energy to do the same thing. For most tasks, it feels wrong, but it doesn't make me any more willing to give up my car. Maybe if I lived outside the US.
- connicpu 4mo agoIf you live in most places in the US other than the urban heart of a few very large cities you have to take a huge hit to your ability to get places in a reasonable time frame without a car. I have hope some more cities other than NYC are improving the situation, but as it is the closest I got to using public transit for a commute was when I was going to one of our other offices in a different downtown area I would drive my car to the park n ride to take the train the rest of the way. The train saves time and sanity because traffic downtown is a nightmare, but that drive takes 5 minutes, and it would add 20+ minutes if I had to walk to the closest bus stop so I could take the bus up to the train station.
- zaat 4mo agoIf you live in most cities in Italy you have to take a huge hit to your ability to get places (in a reasonable timeframe or at all) if you must do it with a car.
- rahimnathwani 4mo ago"Every time we delegate a task to a machine, we are using several orders of magnitude of energy to do the same thing." Might this just be selection bias? I mean, if humans can't do a task efficiently, we're not going to do the comparison with a machine. Some actions we do seem (to me) very inefficient when compared with machines. For example: grating carrots and brushing teeth.
- WaitWaitWha 4mo ago... at 1:03 he hits steady 700W. At 1:29 shows they kept increasing the incline at least to 40 degrees. Why not keep it at the same incline? . . .
- herzigma 4mo agoIt was hard to see from the video, but I suspect the machine he was on increases resistance as pedal speed decreases to try and keep him at a constant output. That's a pretty common device for elite fitness testing.
- gwbas1c 4mo agoWhen I was 11 or 12 I powered an incandescent bulb with an exercise bicycle. I think it was 40 or 60 watts. I can totally understand why that guy was exhausted: 60 watts wasn't hard for me, because I used to ride uphill every day after school, but the other kids could only get a dim glow.