|
|
Thread Tools | Display Modes |
#21
|
|||
|
|||
"Philip W. Moore, Jr." wrote in message ...
Can anybody quantify the advantages of drafting in terms of reduced effort while riding in the pack, whether in line or in an echelon? I was asked this question by a mountain biker and could not answer it. Pretty easy to see why it would be hard for you to describe the sensation. Considering you are the WORLDS LARGEST FRED, and probably can't keep up with the local bicycle touring clubs ice cream social rides, let alone any competitive level training ride. And for the fact that the longest you ever stayed in any draft was the first lap of the Dallas Morning News city criterium citizen's category. And the closest you ever got to an actual working echelon was watching WCP Spring Classics DVD's while polishing your bike. cp |
Ads |
#22
|
|||
|
|||
On Tue, 9 Nov 2004 16:46:38 -0600, "Philip W. Moore, Jr."
wrote: Can anybody quantify the advantages of drafting in terms of reduced effort while riding in the pack, whether in line or in an echelon? I was asked this question by a mountain biker and could not answer it. None for me. No one trusted me enough to let me near their wheel. OTOH, whenever I got close to the back of the pack, their average speed went up by several mph. Really kind of irritating. Curtis L. Russell Odenton, MD (USA) Just someone on two wheels... |
#23
|
|||
|
|||
On Tue, 9 Nov 2004 16:46:38 -0600, "Philip W. Moore, Jr."
wrote: Can anybody quantify the advantages of drafting in terms of reduced effort while riding in the pack, whether in line or in an echelon? I was asked this question by a mountain biker and could not answer it. None for me. No one trusted me enough to let me near their wheel. OTOH, whenever I got close to the back of the pack, their average speed went up by several mph. Really kind of irritating. Curtis L. Russell Odenton, MD (USA) Just someone on two wheels... |
#24
|
|||
|
|||
|
#25
|
|||
|
|||
|
#26
|
|||
|
|||
"Raoul Duke" wrote:
" Can anybody quantify the advantages of drafting in terms of reduced effort while riding in the pack, whether in line or in an echelon? I was asked this question by a mountain biker and could not answer it. Funny you should ask. Outside magazine recently published a brief article on the effects of drafting (the recent issue with Gabrielle Reece on the cover). According to the article, the second rider in line gets a 17% advantage, the third rider a 38% advantage, and the fourth a 40% advantage (assuming a race pace). Interestingly, the article claims the lead rider gets a 3% advantage because the second rider breaks up the drag vortices behind the lead rider. A 30% reduction in power is the number that's usually tossed around here. I'm pretty sure that there are exercise phys studies behind this. Note that that's 30% in power, not speed. In the middle of a 100 person peleton, it should be larger. I don't think anyone has conclusively demonstrated that the lead rider gets an advantage, and I'm not sure cyclists can follow close enough to give the lead rider an advantage (wheels keep the bodies farther apart - unlike race cars). Like the average RBR denizen, I would probably see more than a 30% advantage from drafting Gabrielle Reece, though. |
#27
|
|||
|
|||
"Raoul Duke" wrote:
" Can anybody quantify the advantages of drafting in terms of reduced effort while riding in the pack, whether in line or in an echelon? I was asked this question by a mountain biker and could not answer it. Funny you should ask. Outside magazine recently published a brief article on the effects of drafting (the recent issue with Gabrielle Reece on the cover). According to the article, the second rider in line gets a 17% advantage, the third rider a 38% advantage, and the fourth a 40% advantage (assuming a race pace). Interestingly, the article claims the lead rider gets a 3% advantage because the second rider breaks up the drag vortices behind the lead rider. A 30% reduction in power is the number that's usually tossed around here. I'm pretty sure that there are exercise phys studies behind this. Note that that's 30% in power, not speed. In the middle of a 100 person peleton, it should be larger. I don't think anyone has conclusively demonstrated that the lead rider gets an advantage, and I'm not sure cyclists can follow close enough to give the lead rider an advantage (wheels keep the bodies farther apart - unlike race cars). Like the average RBR denizen, I would probably see more than a 30% advantage from drafting Gabrielle Reece, though. |
#28
|
|||
|
|||
Raoul Duke Wrote: " Can anybody quantify the advantages of drafting in terms of reduced effort while riding in the pack, whether in line or in an echelon? I was asked this question by a mountain biker and could not answer it. Funny you should ask. Outside magazine recently published a brief article on the effects of drafting (the recent issue with Gabrielle Reece on the cover). According to the article, the second rider in line gets a 17% advantage, the third rider a 38% advantage, and the fourth a 40% advantage (assuming a race pace). Interestingly, the article claims the lead rider gets a 3% advantage because the second rider breaks up the drag vortices behind the lead rider. It stands to reason the incremental benefit between the second and third rider is not going more than the incremental benefit between the first and second. Whatever benefit the third rider has is going what the second rider gives him from channelling through an already reduced air-drag plus the benefit from the lead rider at a 6-8 foot distance. At least one of those numbers is out of whack no mater what speed they are tried, or some differing conditions were present. -- meb |
#29
|
|||
|
|||
Raoul Duke Wrote: " Can anybody quantify the advantages of drafting in terms of reduced effort while riding in the pack, whether in line or in an echelon? I was asked this question by a mountain biker and could not answer it. Funny you should ask. Outside magazine recently published a brief article on the effects of drafting (the recent issue with Gabrielle Reece on the cover). According to the article, the second rider in line gets a 17% advantage, the third rider a 38% advantage, and the fourth a 40% advantage (assuming a race pace). Interestingly, the article claims the lead rider gets a 3% advantage because the second rider breaks up the drag vortices behind the lead rider. It stands to reason the incremental benefit between the second and third rider is not going more than the incremental benefit between the first and second. Whatever benefit the third rider has is going what the second rider gives him from channelling through an already reduced air-drag plus the benefit from the lead rider at a 6-8 foot distance. At least one of those numbers is out of whack no mater what speed they are tried, or some differing conditions were present. -- meb |
#30
|
|||
|
|||
Critter P - - - y,
You talk a lot of **** for an anonymous D3 Wal-Mart parking lot racer. I understand the basics of drafting, and was asking for more specific information and sources. No, I don't race bikes for a living. Because I could get into law school. So I am sure that you know quite a bit more about bike racing than I do. -Philip "crit pro" wrote in message om... "Philip W. Moore, Jr." wrote in message ... Can anybody quantify the advantages of drafting in terms of reduced effort while riding in the pack, whether in line or in an echelon? I was asked this question by a mountain biker and could not answer it. Pretty easy to see why it would be hard for you to describe the sensation. Considering you are the WORLDS LARGEST FRED, and probably can't keep up with the local bicycle touring clubs ice cream social rides, let alone any competitive level training ride. And for the fact that the longest you ever stayed in any draft was the first lap of the Dallas Morning News city criterium citizen's category. And the closest you ever got to an actual working echelon was watching WCP Spring Classics DVD's while polishing your bike. cp |
Thread Tools | |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
published helmet research - not troll | patrick | Racing | 1790 | November 8th 04 03:16 AM |
published helmet research - not troll | Frank Krygowski | General | 1927 | October 24th 04 06:39 AM |
published helmet research - not troll | Frank Krygowski | Social Issues | 1716 | October 24th 04 06:39 AM |
Drafting vs. Not Drafting Calories Burnt? | Monty | Racing | 3 | September 29th 04 03:03 AM |