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Cyclocomputer on trainer
http://www.youtube.com/watch?v=fYTJ9v2vsaE
Surely someone on RBT will estimate the rollout (given the size of the display) and calculate the actual speeds involved. Cheers, Carl Fogel |
Cyclocomputer on trainer
On Tue, 04 Nov 2008 05:20:48 GMT, Ryan Cousineau
wrote: In article , wrote: http://www.youtube.com/watch?v=fYTJ9v2vsaE Surely someone on RBT will estimate the rollout (given the size of the display) and calculate the actual speeds involved. Cheers, Carl Fogel You're a horrible person, Carl. In order to get more precise control of the playback and higher quality video, I downloaaded the good version, and started counting revolutions. The odometer in the picture gains 0.01 "km" (eg 10 "m", or what the movie-maker asserts is actually 1 m, in their notes on the video) every 3-4 revolutions. That would make the circumference of the wheel about 30 cm. I'm satisfied that given the dimensions of generic hamsters and cyclocomputers (I couldn't make out the brand name of this one), this is reasonably close to true. The one hamster manages a multi-second run at what would thus be about 6.5 km/h (speeds shown between 60 and 68 km/h for a few seconds) that starts around the 23s mark. Again, that seems like a plausible speed for a very small rodent moving very quickly. More impressive was his cadence: the legs are an unmeasurable blur at top speed. BTW, the video is even funnier at half speed. Dear Ryan, Gives a whole new meaning to the phrase "wheel ejection," doesn't it? The nice thing is that the two hamsters hurl themselves into the spinning trainer voluntarily--they think that it's so much fun that they crowd into it together. Cheers, Carl Fogel |
Cyclocomputer on trainer
"Ryan Cousineau" wrote in message ]... In article , wrote: http://www.youtube.com/watch?v=fYTJ9v2vsaE Surely someone on RBT will estimate the rollout (given the size of the display) and calculate the actual speeds involved. Cheers, Carl Fogel You're a horrible person, Carl. In order to get more precise control of the playback and higher quality video, I downloaaded the good version, and started counting revolutions. The odometer in the picture gains 0.01 "km" (eg 10 "m", or what the movie-maker asserts is actually 1 m, in their notes on the video) every 3-4 revolutions. That would make the circumference of the wheel about 30 cm. I'm satisfied that given the dimensions of generic hamsters and cyclocomputers (I couldn't make out the brand name of this one), this is reasonably close to true. The one hamster manages a multi-second run at what would thus be about 6.5 km/h (speeds shown between 60 and 68 km/h for a few seconds) that starts around the 23s mark. Again, that seems like a plausible speed for a very small rodent moving very quickly. More impressive was his cadence: the legs are an unmeasurable blur at top speed. BTW, the video is even funnier at half speed. -- Ryan Cousineau http://www.wiredcola.com/ "In other newsgroups, they killfile trolls." "In rec.bicycles.racing, we coach them." Ryan, Working from your estimates, the rim speed is about 10,000 cm/min (6.5 km/h * 1,000 = 6,500 m/h * 100 = 650,000 cm/hr /60 = about 10,000 cm/min). If one hamster leg moves in contact with the wheel for 4 cm (about 1/8 of the wheel circumference) and if it's clever enough to stride so that each leg moves its 4 cm in turn, the total "stride length" is 16 cm. 10,000 cm /16 = a cadence of 625 strides/minute! Don't know if I could stand it at half speed; have barely stopped laughing now. Thanks to you, and to Carl, Kerry |
Cyclocomputer on trainer
In article ,
wrote: On Tue, 04 Nov 2008 05:20:48 GMT, Ryan Cousineau wrote: In article , wrote: http://www.youtube.com/watch?v=fYTJ9v2vsaE Surely someone on RBT will estimate the rollout (given the size of the display) and calculate the actual speeds involved. Cheers, Carl Fogel You're a horrible person, Carl. In order to get more precise control of the playback and higher quality video, I downloaaded the good version, and started counting revolutions. The odometer in the picture gains 0.01 "km" (eg 10 "m", or what the movie-maker asserts is actually 1 m, in their notes on the video) every 3-4 revolutions. That would make the circumference of the wheel about 30 cm. I'm satisfied that given the dimensions of generic hamsters and cyclocomputers (I couldn't make out the brand name of this one), this is reasonably close to true. The one hamster manages a multi-second run at what would thus be about 6.5 km/h (speeds shown between 60 and 68 km/h for a few seconds) that starts around the 23s mark. Again, that seems like a plausible speed for a very small rodent moving very quickly. More impressive was his cadence: the legs are an unmeasurable blur at top speed. BTW, the video is even funnier at half speed. Dear Ryan, Gives a whole new meaning to the phrase "wheel ejection," doesn't it? The nice thing is that the two hamsters hurl themselves into the spinning trainer voluntarily--they think that it's so much fun that they crowd into it together. Cheers, Carl Fogel I've always wondered what hamsters got out of hamster wheels, but the behavior is clearly both voluntary and -- judging by the number of hamster-wheel videos out there -- near-universal. -- Ryan Cousineau http://www.wiredcola.com/ "In other newsgroups, they killfile trolls." "In rec.bicycles.racing, we coach them." |
Cyclocomputer on trainer
In article ,
"Kerry Montgomery" wrote: "Ryan Cousineau" wrote in message ]... In article , wrote: http://www.youtube.com/watch?v=fYTJ9v2vsaE Surely someone on RBT will estimate the rollout (given the size of the display) and calculate the actual speeds involved. Cheers, Carl Fogel You're a horrible person, Carl. In order to get more precise control of the playback and higher quality video, I downloaaded the good version, and started counting revolutions. The odometer in the picture gains 0.01 "km" (eg 10 "m", or what the movie-maker asserts is actually 1 m, in their notes on the video) every 3-4 revolutions. That would make the circumference of the wheel about 30 cm. I'm satisfied that given the dimensions of generic hamsters and cyclocomputers (I couldn't make out the brand name of this one), this is reasonably close to true. The one hamster manages a multi-second run at what would thus be about 6.5 km/h (speeds shown between 60 and 68 km/h for a few seconds) that starts around the 23s mark. Again, that seems like a plausible speed for a very small rodent moving very quickly. More impressive was his cadence: the legs are an unmeasurable blur at top speed. BTW, the video is even funnier at half speed. -- Ryan Cousineau http://www.wiredcola.com/ "In other newsgroups, they killfile trolls." "In rec.bicycles.racing, we coach them." Ryan, Working from your estimates, the rim speed is about 10,000 cm/min (6.5 km/h * 1,000 = 6,500 m/h * 100 = 650,000 cm/hr /60 = about 10,000 cm/min). If one hamster leg moves in contact with the wheel for 4 cm (about 1/8 of the wheel circumference) and if it's clever enough to stride so that each leg moves its 4 cm in turn, the total "stride length" is 16 cm. 10,000 cm /16 = a cadence of 625 strides/minute! Don't know if I could stand it at half speed; have barely stopped laughing now. Thanks to you, and to Carl, Kerry Figuring out their cadence is even funnier! Better than 10 strides/second at peak. Pretty good for a little ball of fur. -- Ryan Cousineau http://www.wiredcola.com/ "In other newsgroups, they killfile trolls." "In rec.bicycles.racing, we coach them." |
Cyclocomputer on trainer
On Wed, 05 Nov 2008 01:37:42 GMT, Ryan Cousineau
wrote: In article , wrote: On Tue, 04 Nov 2008 05:20:48 GMT, Ryan Cousineau wrote: In article , wrote: http://www.youtube.com/watch?v=fYTJ9v2vsaE Surely someone on RBT will estimate the rollout (given the size of the display) and calculate the actual speeds involved. Cheers, Carl Fogel You're a horrible person, Carl. In order to get more precise control of the playback and higher quality video, I downloaaded the good version, and started counting revolutions. The odometer in the picture gains 0.01 "km" (eg 10 "m", or what the movie-maker asserts is actually 1 m, in their notes on the video) every 3-4 revolutions. That would make the circumference of the wheel about 30 cm. I'm satisfied that given the dimensions of generic hamsters and cyclocomputers (I couldn't make out the brand name of this one), this is reasonably close to true. The one hamster manages a multi-second run at what would thus be about 6.5 km/h (speeds shown between 60 and 68 km/h for a few seconds) that starts around the 23s mark. Again, that seems like a plausible speed for a very small rodent moving very quickly. More impressive was his cadence: the legs are an unmeasurable blur at top speed. BTW, the video is even funnier at half speed. Dear Ryan, Gives a whole new meaning to the phrase "wheel ejection," doesn't it? The nice thing is that the two hamsters hurl themselves into the spinning trainer voluntarily--they think that it's so much fun that they crowd into it together. Cheers, Carl Fogel I've always wondered what hamsters got out of hamster wheels, but the behavior is clearly both voluntary and -- judging by the number of hamster-wheel videos out there -- near-universal. Dear Ryan, The stationary spinning is just training for this event: http://www.youtube.com/watch?v=h7BsGBpMD2w Cheers, Carl Fogel |
Cyclocomputer on trainer
wrote in message ... http://www.youtube.com/watch?v=fYTJ9v2vsaE Surely someone on RBT will estimate the rollout (given the size of the display) and calculate the actual speeds involved. Cheers, Carl Fogel You're a horrible person, Carl. In order to get more precise control of the playback and higher quality video, I downloaaded the good version, and started counting revolutions. The odometer in the picture gains 0.01 "km" (eg 10 "m", or what the movie-maker asserts is actually 1 m, in their notes on the video) every 3-4 revolutions. That would make the circumference of the wheel about 30 cm. I'm satisfied that given the dimensions of generic hamsters and cyclocomputers (I couldn't make out the brand name of this one), this is reasonably close to true. The one hamster manages a multi-second run at what would thus be about 6.5 km/h (speeds shown between 60 and 68 km/h for a few seconds) that starts around the 23s mark. Again, that seems like a plausible speed for a very small rodent moving very quickly. More impressive was his cadence: the legs are an unmeasurable blur at top speed. BTW, the video is even funnier at half speed. Dear Ryan, Gives a whole new meaning to the phrase "wheel ejection," doesn't it? The nice thing is that the two hamsters hurl themselves into the spinning trainer voluntarily--they think that it's so much fun that they crowd into it together. Cheers, Carl Fogel I've always wondered what hamsters got out of hamster wheels, but the behavior is clearly both voluntary and -- judging by the number of hamster-wheel videos out there -- near-universal. Dear Ryan, The stationary spinning is just training for this event: http://www.youtube.com/watch?v=h7BsGBpMD2w Cheers, Carl Fogel If only the hamster knew he was slowing down in the turns. |
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