What's your maximum horse power?

[Yellow Fang]

1 HP = 750 Watts (more or less). I am sure I regularly did over 400 W on the spinning bikes when I went to spin sessions. With a superhuman effort, I suspect I could top 500 W (⅔ HP).

 

[HLaB]

 

[Rob3rt]

For what duration?

 

[mrandmrspoves]

Horsepower? In my case.....more My Little Pony

 

[roadrash]

i think my power ratio could probably be likened to that of a hamster running in its a wheel, .....certainly not horse power.

 

[Rob3rt]

Rather useless, but since the thread is here, I had a look at my data and the power I can hold for varying durations returns the following.

Duration - Power (W) - Horsepower (based on your OP)
1s = 981W = 1.31
10s = 840W = 1.12
30s = 605W = 0.81
1 min = 500W = 0.67
5 min = 390W = 0.52
20 min = 325W = 0.43
60 min = 308W = 0.41

I am a weak sprinter!

 

[Richard A Thackeray]

Someone at work shoed me an article in 'Top Gear' magazine that had an interview with Chris Hoy.

During tests, he'd generated over 500Ib/ft of torque , as it said; 'more than a Ferrari (whatever model..)

 

[GrasB]

Rob3rt, how did you get your 1s power? PT, Quarq & SRM power meters don't really sample down to that time span. They average the forces over a longer period & produce a data point at a higher frequency.

1s = 1.73-1.91 (1289w-1424w) - depends on where you chop the pedal strokes.
5s = 1.70hp (1264w)
10s = 1.37hp (1019w)
30s = 1.17hp (873w)
1m = 0.89hp (662w)
5min = 0.60hp (448w)
15min = 0.55hp (409w)
60m = 0.5hp (371w)

 

[Rob3rt]

Quarq and I just lifted from my data, not something I have thought about tbh. Also these values are lifted from training efforts where they were part of some other effort (e.g. the best 1 minute power could have been the best section of a 2 minute effort), only the 5 mins, 20 mins and 60 min values have been formally tested as standalone efforts so it is highly likely that most of the shorter durations are not accurate. Additionally the 5 minute, 20 minute and 60 minute powers are turbo trainer values, I have exceeded both the 20 and 60 minute figures in 10 and 25 mile TT's by a little bit, but not enough to warrant an increase in my FTP value in my software as I would be unable to replicate in training on the turbo.

 

[GrasB]

Quarq and I just lifted from my data, not something I have thought about tbh. Also these values are lifted from best efforts during training, only the 5 mins, 20 mins and 60 min values are tested to maximal effort.

IIRC you 1s will be 2 crank revolutions. So the actual measurement will be dependant on your cadence but is 'true' for that period. SRM are 1.5 revolutions & pessimistic, in some way this is the best instantaneous measurement, as it gives you minimum peek power ( does that concept make your head hurt? it does mine). PTs are just funky as they go by time & various versions have different sample periods. This is why 5s is really the lowest sample period you want to deal with.

 

[Yellow Fang]

Someone at work shoed me an article in 'Top Gear' magazine that had an interview with Chris Hoy.

During tests, he'd generated over 500Ib/ft of torque , as it said; 'more than a Ferrari (whatever model..)

HP = RPM x lb in / 63000
HP = RPM x lb/ft / 5250 (I think)

So for Chris Hoy,

HP = RPM x 500 lb/ft / 5200 = 0.0962 lb/ft x RPM

What is Chris Hoy's revolutions per minute?

 

[Rob3rt]

HP = RPM x lb in / 63000
HP = RPM x lb/ft / 5250 (I think)

So for Chris Hoy,

HP = RPM x 500 lb/ft / 5200 = 0.0962 lb/ft x RPM

What is Chris Hoy's revolutions per minute?

Depends how fast he is going, fixed gear!

 

[ColinJ]

Duration - Power (W) - Horsepower (based on your OP)
1s = 98.1W = 0.131
10s = 84.0W = 0.112
30s = 60.5W = 0.081
1 min = 50.0W = 0.067
5 min = 39.0W = 0.052
20 min = 32.5W = 0.043
60 min = 30.8W = 0.041

I am just plain weak!

 

[Cyclist33]

I'm a cyclist not an athlete, therefore have never bothered to assess my wattage as I don't see riding as training.

 

[GrasB]

Depends how fast he is going, fixed gear!

Track sprint cyclists tend to have a fairly constant maximum power over a wide rpm range, as in 30-150rpm. I'd imagine that would be fairly low in the rpm registers, bellow that the pedal for tends to stay constant & power rises. Say he puts out 500lb/ft at 10rpm that's 0.96kW, but at 30 rpm that'd be 2.89kW.