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Comment by smallpipe

9 hours ago

A fairly untrained cyclist is usually able to maintain 200W, so yes this is definitely possible

An untrained cyclist is not able to maintain 200 watts.

For an average untrained male cyclist who is 175lb, they should be able to maintain 1.5-2 w/kg over an hour, or 120-160watts. A beginner cyclist who's been cycling recreationally over over a year should be able to attain 2-2.5w/kg which is 160-200 watts. A recreational cyclist who's be training for several years should be able to maintain 200 watts.

Trust me, I'm a cyclist, and I cycle with a power meter.

  • As an average male who is ~175lbs and untrained at cycling, this is hugely validating for my terrible idea; 140 watts is the max charging speed for 16" M5 MacBooks. I can finally stop thinking for myself and have my computer do it all for me, powered by my big beefy legs.

    • 140 watts is the FTP. That means you can do it for an hour, and it will be an extremely exhausting hour and you will want at least two days of rest to recover from this workout before doing it again.

      If you are not chasing watts, it’s much more sustainable to do 70 watts for two hours. You can probably do this every day.

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  • Just one more follow up and I'll be done, promise. The average power output (FTP) of someone on zwift, a indoor cycling game, is a whooping 185 watts.

I just rode with an untrained cyclist (new to cycling) yesterday. The person averaged 80W over five hours. It’s about right for an actual untrained cyclist.

My best is 980W - for 1 second

  • That's solid. If my memory is correct, and my teachers were correct (both of these are suspect) back in high school, a human should be able to momentarily exert about 1 horsepower at maximum effort. We did an experiment on how much power we could output at maximum effort. We tested it by sprinting up some number of flights of stairs, and timing it. As I recall we did conclude that in round numbers the hypothesis was correct.

    But that was 35 years ago and it was a high school physics experiment meant to be entertaining more than precise.

And a good sprinter can make some toast!

  • I'm still sour they had only one toast in, in a two slot toaster

    • I've had the same thought and it's been a topic I've been this close to talking about at parties. If I did I'm sure I'd bore everyone to death.

      Considering the difficulty of sustaining 700 watts vs 350 watts, we could've had some very well-burnt toast if they uninstalled the heating coils for the 2nd piece of bread!

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