#11
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Longer crankarms
In article , chris
wrote: I caught Ferrari's comment and I wrote him (haven't heard from him, though, and don't expect to). I both agree and challenge his comments. He clearly has spent little time researching anything. Itherwise he would realize what I made note of to him. Its easy for people to criticize the lack of real world research, but few realize the logistics of such research. What makes you think he hasn't done some research with the riders he has worked with? -WG |
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#12
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Longer crankarms
In article , chris
wrote: I caught Ferrari's comment and I wrote him (haven't heard from him, though, and don't expect to). I both agree and challenge his comments. He clearly has spent little time researching anything. Itherwise he would realize what I made note of to him. Its easy for people to criticize the lack of real world research, but few realize the logistics of such research. What makes you think he hasn't done some research with the riders he has worked with? -WG |
#13
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Longer crankarms
warren wrote:
Ferrari offers some other reasons and then concludes with this little needle, "Only when physiologists get out of their laboratories and dedicate themselves to the study of top-level cyclists, will information be applicable to athletes..." What an odd and revealing thing to say. |
#14
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Longer crankarms
warren wrote:
Ferrari offers some other reasons and then concludes with this little needle, "Only when physiologists get out of their laboratories and dedicate themselves to the study of top-level cyclists, will information be applicable to athletes..." What an odd and revealing thing to say. |
#15
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Longer crankarms
"Jiyang Chen" wrote in message ...
Are there any evidence that longer crankarms are more efficient? It seems like it would produce more torque since there's more leverage. More torque, yes. More power, not necessarily. Just looking at the basic physics and ignoring the relative complexity of the physiological considerations, keep in mind that to increase speed on a bicycle, *power* (i.e. rpm x torque) must be increased. And to increase power you can increase either torque or rpm. Formula 1 race cars (and some guy named Lance) generate large amounts of power with engines that turn at very high rpm. Diesel trucks and diesel/electric locomotives get their power mostly from high torque at low rpms. And then, of course, you have to define what you mean by "more efficient." DR |
#16
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Longer crankarms
"Jiyang Chen" wrote in message ...
Are there any evidence that longer crankarms are more efficient? It seems like it would produce more torque since there's more leverage. More torque, yes. More power, not necessarily. Just looking at the basic physics and ignoring the relative complexity of the physiological considerations, keep in mind that to increase speed on a bicycle, *power* (i.e. rpm x torque) must be increased. And to increase power you can increase either torque or rpm. Formula 1 race cars (and some guy named Lance) generate large amounts of power with engines that turn at very high rpm. Diesel trucks and diesel/electric locomotives get their power mostly from high torque at low rpms. And then, of course, you have to define what you mean by "more efficient." DR |
#17
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Longer crankarms
His comments make me believe that; unless of course he has funded all
his research from his own stash of cash. He clearly doesn't get it, though. If he did, he would understand how hard it is to get anything funded, let alone the logistics of field testing. Case in point: I'll leave out much of detail here, and just touch on the cost and logistics of looking at data collection for an 8 day stage race. Nor will I include payment for services rendered. Pre and post (simple) lactate testing (5 riders) - $300 power meters for all (assuming they'll all ride a power tap & you get a deal on them) - $2500 Hct samples (~80 samples) - $30 Airfare to get your personnel there - $600 Accommodations (with luck)- $900 Plus a bunch of stuff I missed and a boat load of time plus finding riders to do this...THEN ALL THE DATA ANALYSIS. ~$4500.00 Please remit payment to me or forward bill to Ferrari and I'll get started! CH ... In article , chris wrote: I caught Ferrari's comment and I wrote him (haven't heard from him, though, and don't expect to). I both agree and challenge his comments. He clearly has spent little time researching anything. Itherwise he would realize what I made note of to him. Its easy for people to criticize the lack of real world research, but few realize the logistics of such research. What makes you think he hasn't done some research with the riders he has worked with? -WG |
#18
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Longer crankarms
His comments make me believe that; unless of course he has funded all
his research from his own stash of cash. He clearly doesn't get it, though. If he did, he would understand how hard it is to get anything funded, let alone the logistics of field testing. Case in point: I'll leave out much of detail here, and just touch on the cost and logistics of looking at data collection for an 8 day stage race. Nor will I include payment for services rendered. Pre and post (simple) lactate testing (5 riders) - $300 power meters for all (assuming they'll all ride a power tap & you get a deal on them) - $2500 Hct samples (~80 samples) - $30 Airfare to get your personnel there - $600 Accommodations (with luck)- $900 Plus a bunch of stuff I missed and a boat load of time plus finding riders to do this...THEN ALL THE DATA ANALYSIS. ~$4500.00 Please remit payment to me or forward bill to Ferrari and I'll get started! CH ... In article , chris wrote: I caught Ferrari's comment and I wrote him (haven't heard from him, though, and don't expect to). I both agree and challenge his comments. He clearly has spent little time researching anything. Itherwise he would realize what I made note of to him. Its easy for people to criticize the lack of real world research, but few realize the logistics of such research. What makes you think he hasn't done some research with the riders he has worked with? -WG |
#19
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Longer crankarms
DirtRoadie wrote:
Formula 1 race cars (and some guy named Lance) generate large amounts of power with engines that turn at very high rpm. I'm not so sure that's a fair characterization of Armstrong. During his climb of Alpe d'Huez a couple of years ago I estimated he was averaging in the ballpark of 425W at perhaps 100-105rpm or so. That means his rpm's were slightly higher than most of us but he was producing *lots* more power, i.e., his torque was pretty high. |
#20
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DirtRoadie wrote:
Formula 1 race cars (and some guy named Lance) generate large amounts of power with engines that turn at very high rpm. I'm not so sure that's a fair characterization of Armstrong. During his climb of Alpe d'Huez a couple of years ago I estimated he was averaging in the ballpark of 425W at perhaps 100-105rpm or so. That means his rpm's were slightly higher than most of us but he was producing *lots* more power, i.e., his torque was pretty high. |
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