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#21
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Low profile tires ?
On 01/06/2017 8:08 PM, AMuzi wrote:
On 6/1/2017 6:52 PM, Duane wrote: John B. wrote: On Thu, 1 Jun 2017 10:00:51 -0000 (UTC), Duane wrote: John B. wrote: On Wed, 31 May 2017 07:59:20 -0400, Duane wrote: On 30/05/2017 8:46 PM, John B. wrote: On Tue, 30 May 2017 10:17:41 -0400, Duane wrote: On 30/05/2017 9:35 AM, Andy wrote: On Thursday, May 25, 2017 at 9:30:58 AM UTC-5, wrote: On Wednesday, May 24, 2017 at 7:58:59 PM UTC-7, Andy wrote: I saw a bike today with the rim real close to the street. I had a second look and saw black under the rim. Do they make low profile tires for bikes ? Andy We're seeing progressively wider rims that end up pulling the sidewalls of the tire out and the depth of the tire is reduced. In these cases you should use wider tires to obtain a normal profile. Interesting. Andy My HED Ardennes 23SL wheels are 23mm and are designed for 23mm tires. The current model Ardennses Plus are 25mm and as far as I know they are designed for 25mm tires. http://www.hedwheels.com/hed-wheels-faq.asp Sheldon published a table of rim width and usable tire widths. -- Cheers, Not much luck finding Sheldon's comments about HED technology. https://www.sheldonbrown.com/tire-sizing.html#width -- Cheers, I know about the charts. I meant the technology of HED wheels which are recommended to be used with tires the same size as the rims. It is my understanding that the HED wheels you are talking about are designed to run with a specific size tire solely for aerodynamic reasons in order to minimize drag caused by where air coming off the tire first reattaches. https://intheknowcycling.com/2016/04...s-wheel-sizes/ If your concern is the lowest possible drag then I assume that using HED recommended tire sizes is important. -- Cheers, No, your understanding is not correct. https://www.competitivecyclist.com/h...elset-clincher Or google HED wheels. I'm not sure about the correct accoutrements for rocking a HED style statement. From that page: "Which color scheme are these actually? The first picture shows the print on the wheel as black with white outlines, the second picture shows the text in full white?" Lol. Well I think mine must be the old style as the decals are white on black. Maybe I should trade them in for the new black w/white. Maybe they will be faster. What I like about these wheels is that I have had them for ~18000km with 0 maintenance. So they're relatively light but durable enough to ride on Quebec roads and not even need truing. Additionally, with a 23mm tire on a 23mm rim I can run them at 90 psi instead of the typical 125 psi for a much more comfortable ride. And with this setup, the way that the tire deforms changes the contact patch making for better traction. And cornering is very good. Also, John says that they're more aerodynamic or something... |
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#22
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Low profile tires ?
On 02/06/2017 7:02 AM, Bertrand wrote:
Sheldon published a table of rim width and usable tire widths. I know about the charts. I meant the technology of HED wheels which are recommended to be used with tires the same size as the rims. It is my understanding that the HED wheels you are talking about are designed to run with a specific size tire solely for aerodynamic reasons in order to minimize drag caused by where air coming off the tire first reattaches. https://intheknowcycling.com/2016/04...s-wheel-sizes/ If your concern is the lowest possible drag then I assume that using HED recommended tire sizes is important. A claim (by the wheel manufacturer) of wheel failure caused by using tires that were too narrow for the rims: http://www.velonews.com/2017/06/news...tirreno_439821 Pays to check the specs of your equipment. |
#23
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Low profile tires ?
On 6/2/2017 7:40 AM, Duane wrote:
On 01/06/2017 8:08 PM, AMuzi wrote: On 6/1/2017 6:52 PM, Duane wrote: John B. wrote: On Thu, 1 Jun 2017 10:00:51 -0000 (UTC), Duane wrote: John B. wrote: On Wed, 31 May 2017 07:59:20 -0400, Duane wrote: On 30/05/2017 8:46 PM, John B. wrote: On Tue, 30 May 2017 10:17:41 -0400, Duane wrote: On 30/05/2017 9:35 AM, Andy wrote: On Thursday, May 25, 2017 at 9:30:58 AM UTC-5, wrote: On Wednesday, May 24, 2017 at 7:58:59 PM UTC-7, Andy wrote: I saw a bike today with the rim real close to the street. I had a second look and saw black under the rim. Do they make low profile tires for bikes ? Andy We're seeing progressively wider rims that end up pulling the sidewalls of the tire out and the depth of the tire is reduced. In these cases you should use wider tires to obtain a normal profile. Interesting. Andy My HED Ardennes 23SL wheels are 23mm and are designed for 23mm tires. The current model Ardennses Plus are 25mm and as far as I know they are designed for 25mm tires. http://www.hedwheels.com/hed-wheels-faq.asp Sheldon published a table of rim width and usable tire widths. -- Cheers, Not much luck finding Sheldon's comments about HED technology. https://www.sheldonbrown.com/tire-sizing.html#width -- Cheers, I know about the charts. I meant the technology of HED wheels which are recommended to be used with tires the same size as the rims. It is my understanding that the HED wheels you are talking about are designed to run with a specific size tire solely for aerodynamic reasons in order to minimize drag caused by where air coming off the tire first reattaches. https://intheknowcycling.com/2016/04...s-wheel-sizes/ If your concern is the lowest possible drag then I assume that using HED recommended tire sizes is important. -- Cheers, No, your understanding is not correct. https://www.competitivecyclist.com/h...elset-clincher Or google HED wheels. I'm not sure about the correct accoutrements for rocking a HED style statement. From that page: "Which color scheme are these actually? The first picture shows the print on the wheel as black with white outlines, the second picture shows the text in full white?" Lol. Well I think mine must be the old style as the decals are white on black. Maybe I should trade them in for the new black w/white. Maybe they will be faster. What I like about these wheels is that I have had them for ~18000km with 0 maintenance. So they're relatively light but durable enough to ride on Quebec roads and not even need truing. Additionally, with a 23mm tire on a 23mm rim I can run them at 90 psi instead of the typical 125 psi for a much more comfortable ride. And with this setup, the way that the tire deforms changes the contact patch making for better traction. And cornering is very good. Also, John says that they're more aerodynamic or something... I'm not dissing HED product - they are a fine organization with good wheels. -- Andrew Muzi www.yellowjersey.org/ Open every day since 1 April, 1971 |
#24
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Low profile tires ?
On 02/06/2017 9:23 AM, AMuzi wrote:
On 6/2/2017 7:40 AM, Duane wrote: On 01/06/2017 8:08 PM, AMuzi wrote: On 6/1/2017 6:52 PM, Duane wrote: John B. wrote: On Thu, 1 Jun 2017 10:00:51 -0000 (UTC), Duane wrote: John B. wrote: On Wed, 31 May 2017 07:59:20 -0400, Duane wrote: On 30/05/2017 8:46 PM, John B. wrote: On Tue, 30 May 2017 10:17:41 -0400, Duane wrote: On 30/05/2017 9:35 AM, Andy wrote: On Thursday, May 25, 2017 at 9:30:58 AM UTC-5, wrote: On Wednesday, May 24, 2017 at 7:58:59 PM UTC-7, Andy wrote: I saw a bike today with the rim real close to the street. I had a second look and saw black under the rim. Do they make low profile tires for bikes ? Andy We're seeing progressively wider rims that end up pulling the sidewalls of the tire out and the depth of the tire is reduced. In these cases you should use wider tires to obtain a normal profile. Interesting. Andy My HED Ardennes 23SL wheels are 23mm and are designed for 23mm tires. The current model Ardennses Plus are 25mm and as far as I know they are designed for 25mm tires. http://www.hedwheels.com/hed-wheels-faq.asp Sheldon published a table of rim width and usable tire widths. -- Cheers, Not much luck finding Sheldon's comments about HED technology. https://www.sheldonbrown.com/tire-sizing.html#width -- Cheers, I know about the charts. I meant the technology of HED wheels which are recommended to be used with tires the same size as the rims. It is my understanding that the HED wheels you are talking about are designed to run with a specific size tire solely for aerodynamic reasons in order to minimize drag caused by where air coming off the tire first reattaches. https://intheknowcycling.com/2016/04...s-wheel-sizes/ If your concern is the lowest possible drag then I assume that using HED recommended tire sizes is important. -- Cheers, No, your understanding is not correct. https://www.competitivecyclist.com/h...elset-clincher Or google HED wheels. I'm not sure about the correct accoutrements for rocking a HED style statement. From that page: "Which color scheme are these actually? The first picture shows the print on the wheel as black with white outlines, the second picture shows the text in full white?" Lol. Well I think mine must be the old style as the decals are white on black. Maybe I should trade them in for the new black w/white. Maybe they will be faster. What I like about these wheels is that I have had them for ~18000km with 0 maintenance. So they're relatively light but durable enough to ride on Quebec roads and not even need truing. Additionally, with a 23mm tire on a 23mm rim I can run them at 90 psi instead of the typical 125 psi for a much more comfortable ride. And with this setup, the way that the tire deforms changes the contact patch making for better traction. And cornering is very good. Also, John says that they're more aerodynamic or something... I'm not dissing HED product - they are a fine organization with good wheels. Didn't mean to imply that you were. |
#25
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Low profile tires ?
On Friday, June 2, 2017 at 2:58:52 AM UTC-7, Duane wrote:
John B. wrote: On Thu, 1 Jun 2017 23:52:19 -0000 (UTC), Duane wrote: John B. wrote: On Thu, 1 Jun 2017 10:00:51 -0000 (UTC), Duane wrote: John B. wrote: On Wed, 31 May 2017 07:59:20 -0400, Duane wrote: On 30/05/2017 8:46 PM, John B. wrote: On Tue, 30 May 2017 10:17:41 -0400, Duane wrote: On 30/05/2017 9:35 AM, Andy wrote: On Thursday, May 25, 2017 at 9:30:58 AM UTC-5, wrote: On Wednesday, May 24, 2017 at 7:58:59 PM UTC-7, Andy wrote: I saw a bike today with the rim real close to the street. I had a second look and saw black under the rim. Do they make low profile tires for bikes ? Andy We're seeing progressively wider rims that end up pulling the sidewalls of the tire out and the depth of the tire is reduced.. In these cases you should use wider tires to obtain a normal profile. Interesting. Andy My HED Ardennes 23SL wheels are 23mm and are designed for 23mm tires. The current model Ardennses Plus are 25mm and as far as I know they are designed for 25mm tires. http://www.hedwheels.com/hed-wheels-faq.asp Sheldon published a table of rim width and usable tire widths. -- Cheers, Not much luck finding Sheldon's comments about HED technology. https://www.sheldonbrown.com/tire-sizing.html#width -- Cheers, I know about the charts. I meant the technology of HED wheels which are recommended to be used with tires the same size as the rims. It is my understanding that the HED wheels you are talking about are designed to run with a specific size tire solely for aerodynamic reasons in order to minimize drag caused by where air coming off the tire first reattaches. https://intheknowcycling.com/2016/04...s-wheel-sizes/ If your concern is the lowest possible drag then I assume that using HED recommended tire sizes is important. -- Cheers, No, your understanding is not correct. https://www.competitivecyclist.com/h...elset-clincher Or google HED wheels. Yup. I read the site and then I read https://www.competitivecyclist.com/h...lset-clincher# Which tells me that: "If the tech sheet, marketing copy, and glowing reviews from major publications aren't enough to sell you on the plush, efficient ride of HED's Ardennes Plus SL Road Wheelset, then just head to your local two-wheeled hotspot and count the number of times you see that unmistakable branding roll by on everything from carbon race frames to steel touring machines with wheelbases you can measure in meters. This ubiquity is no accident." Then I got to thinking that I've never seen a "HED's Ardennes Plus SL Road Wheelset", never. So I just assigned the claims for HED to the container labeled "Outrageous and unproven claims". -- Cheers, John B. Whatever. If you want to think people use the same tire width as the rim width because of some aero fettish, that's up to you. As for what you've seen I can't argue but they're popular here on Québec roads. HED has made their name making TT wheels. If they make something else you have to take it for what it is - the same as everyone else's. Except the deep HED rims take extra-long innertube fillers which double the cost of the innertubes. |
#26
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Low profile tires ?
On Friday, June 2, 2017 at 4:02:15 AM UTC-7, Bertrand wrote:
Sheldon published a table of rim width and usable tire widths. I know about the charts. I meant the technology of HED wheels which are recommended to be used with tires the same size as the rims. It is my understanding that the HED wheels you are talking about are designed to run with a specific size tire solely for aerodynamic reasons in order to minimize drag caused by where air coming off the tire first reattaches. https://intheknowcycling.com/2016/04...s-wheel-sizes/ If your concern is the lowest possible drag then I assume that using HED recommended tire sizes is important. A claim (by the wheel manufacturer) of wheel failure caused by using tires that were too narrow for the rims: http://www.velonews.com/2017/06/news...tirreno_439821 To maximize the aerodynamics of an aero wheelset you have to have tires that are 2 mm wider than the wheel. This has been shown in many wind tunnel tests. And why aero wheels used to have narrow rims. |
#27
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Low profile tires ?
On Fri, 2 Jun 2017 08:40:45 -0400, Duane
wrote: On 01/06/2017 8:08 PM, AMuzi wrote: On 6/1/2017 6:52 PM, Duane wrote: John B. wrote: On Thu, 1 Jun 2017 10:00:51 -0000 (UTC), Duane wrote: John B. wrote: On Wed, 31 May 2017 07:59:20 -0400, Duane wrote: On 30/05/2017 8:46 PM, John B. wrote: On Tue, 30 May 2017 10:17:41 -0400, Duane wrote: On 30/05/2017 9:35 AM, Andy wrote: On Thursday, May 25, 2017 at 9:30:58 AM UTC-5, wrote: On Wednesday, May 24, 2017 at 7:58:59 PM UTC-7, Andy wrote: I saw a bike today with the rim real close to the street. I had a second look and saw black under the rim. Do they make low profile tires for bikes ? Andy We're seeing progressively wider rims that end up pulling the sidewalls of the tire out and the depth of the tire is reduced. In these cases you should use wider tires to obtain a normal profile. Interesting. Andy My HED Ardennes 23SL wheels are 23mm and are designed for 23mm tires. The current model Ardennses Plus are 25mm and as far as I know they are designed for 25mm tires. http://www.hedwheels.com/hed-wheels-faq.asp Sheldon published a table of rim width and usable tire widths. -- Cheers, Not much luck finding Sheldon's comments about HED technology. https://www.sheldonbrown.com/tire-sizing.html#width -- Cheers, I know about the charts. I meant the technology of HED wheels which are recommended to be used with tires the same size as the rims. It is my understanding that the HED wheels you are talking about are designed to run with a specific size tire solely for aerodynamic reasons in order to minimize drag caused by where air coming off the tire first reattaches. https://intheknowcycling.com/2016/04...s-wheel-sizes/ If your concern is the lowest possible drag then I assume that using HED recommended tire sizes is important. -- Cheers, No, your understanding is not correct. https://www.competitivecyclist.com/h...elset-clincher Or google HED wheels. I'm not sure about the correct accoutrements for rocking a HED style statement. From that page: "Which color scheme are these actually? The first picture shows the print on the wheel as black with white outlines, the second picture shows the text in full white?" Lol. Well I think mine must be the old style as the decals are white on black. Maybe I should trade them in for the new black w/white. Maybe they will be faster. What I like about these wheels is that I have had them for ~18000km with 0 maintenance. So they're relatively light but durable enough to ride on Quebec roads and not even need truing. Additionally, with a 23mm tire on a 23mm rim I can run them at 90 psi instead of the typical 125 psi for a much more comfortable ride. And with this setup, the way that the tire deforms changes the contact patch making for better traction. And cornering is very good. Also, John says that they're more aerodynamic or something... Actually I didn't say it, some bloke that writes "for cyclists who want to know, but don't have the time to do all the research and comparisons"..., I merely quoted from his 5,573 word article on wheels. In closing he states: "here's my take on what mix of comfort, speed and handling you can expect with different tire-rim combinations... A 23C tire on a 19C or narrower wheel best speed. If you've chosen this set-up, crits, road races or TTs and triathlons are probably your passion, deeper aero wheels are probably your preferred hoops and comfort is further down your list of what matters..." -- Cheers, John B. |
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