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Old 10-05-06, 07:29 PM   #1
DonValley
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How much Horsepower do people make?

Just wondering if cyclist's output has often been measured in Horsepower? It seems we gotta be the equivalent of a 35CC motor or so on a good day for a few seconds? DO any of you know typical output? Or perhaps measured in Thrust ?
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Old 10-05-06, 07:30 PM   #2
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Depends on the person.
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Old 10-05-06, 07:38 PM   #3
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fyi - 1lb of thrust = 2hp
thought maybe some of you might wanted to know
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Old 10-05-06, 07:39 PM   #4
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The roadie forum might be useful to ask in. They seem concerned with wattage and the likes.
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Old 10-05-06, 07:52 PM   #5
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I know small trolling motors claim 40 poundes of thrust, so that would make them 80 HP. Your formula must be off by a decimal or something.
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Old 10-05-06, 07:57 PM   #6
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I would think a horse in real life has more power than a person.. but thats different. I think? lol horses run and pull way more than humans thatns for sure.
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Old 10-05-06, 08:01 PM   #7
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43.

The answer is 43.
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Old 10-05-06, 08:13 PM   #8
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sorry for my mistake. i'm a mythbuster fan and i was watching one of their episoda where they were mounting rockets on the roof of the car. adam said the rocket produce x amount of thrust which means the car has 2x of horsepower. i just googled a bit and the formula to convert such forces needs the factor of speed. at low speed, the ratio is about 1:.9 (thrust to HP), at a moderate high speed it's about 1:1 and at the speed of sound it's 1:2.
plz do correct me before i sink myself further with incorrect info.
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Old 10-05-06, 08:21 PM   #9
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http://www.google.com/search?hl=en&q=human+horsepower
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Old 10-05-06, 08:32 PM   #10
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43.

The answer is 43.
I think that if you revist your calculations, you'll find it's 42
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Old 10-05-06, 08:35 PM   #11
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Humans don't measure in HP but instead in watts. If I remember my basic physics class, 1HP is 743 watts of power. Personally I have no idea how to measure human power output because I have no desire to do so, but I know that PowerTap makes hubs for road bikes which can measure this.

--Oh yeah, my guess is that average power output is around 200 - 300 watts? so that divided by 743 watts gives you HP.

I stand corrected, I read the stuff on google and it's 746 watts and it's probably less than 200 watts *shrugs*

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Old 10-05-06, 10:29 PM   #12
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Well on my road bike, I have a power tap on my race wheels. On a 100-150km ride, I will average about 300w. The most I have seen myself put down, was in a sprint, I maxed out at 1235w(that was a 100m standing sprint).
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Old 10-05-06, 10:30 PM   #13
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Originally Posted by KonaRider24
Depends on the person.

Or the horse.
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Old 10-05-06, 10:50 PM   #14
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The most I have seen myself put down, was in a sprint, I maxed out at 1235w(that was a 100m standing sprint).
Was that the average for the whole 100m or THE max.
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Old 10-05-06, 10:53 PM   #15
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Or the horse.
A horse is easy.

1 horsepower.
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Old 10-05-06, 10:55 PM   #16
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Not if the horse has been working out....Hmphh! (flips head and tosses hair in the air)
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Old 10-05-06, 10:58 PM   #17
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Miniature horse equals 1/2 horsepower.

A dead horse equals 0 horsepower.
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Old 10-05-06, 11:00 PM   #18
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Old 10-05-06, 11:01 PM   #19
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Originally Posted by jiiiim
fyi - 1lb of thrust = 2hp
thought maybe some of you might wanted to know
Only if you're going 1100 feet per second.

You have two different types of units. Thrust is force, while power is force times speed (energy per time, really).
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Old 10-06-06, 06:49 AM   #20
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roughly .1, if you're a 'baseline' active/athletic person, depending on how long of a period of time you're measuring over.
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Old 10-06-06, 07:18 AM   #21
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1 hp = 745 W If you are in good shape you might be able to put out 1000 W for a couple of seconds.
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Old 10-06-06, 07:48 AM   #22
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see Slvoids User Title, that'll give you your answer
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Old 10-06-06, 08:18 AM   #23
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Originally Posted by idleuser
Was that the average for the whole 100m or THE max.
Max, in a sprint like that, we spanned two lanes wide with people sprinting, you dont really watch your computer...so all I saw was the max after the sprint was done and I looked at the computer. I have had sustained efforts at about 800w for about a km. It was a race up a hill, my legs hurt after that, so ya, about 1hp.
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Old 10-06-06, 08:58 AM   #24
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I"m crankin out like 35 RWHP on a good day.... DOH
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Old 10-06-06, 09:13 AM   #25
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I think that if you revist your calculations, you'll find it's 42
OF COURSE it's 42. maybe you don't know what the question is?

Sincerely, Deep Thought
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