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#1
February 3rd 11, 07:08 PM
posted to rec.bicycles.tech
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Tour magazine wheel test
I find it strange that wheel manufactures cannot do better in terms of
rear wheel stiffness. I do not know where Tour magazine got the threshold value of 50 [N/mm] from. However, only Campa "Zonda", Mavic "KsyriumR-Sys SL" and "Elite" and the SRAM "S27" are close to 50 N/ mm. Most surprisingly the 20 spoke rear SRAM S27 which looks so fragile: radial lacing drive side, and 1x non drive side. Would have been interesting to see the test on a number of wheels in terms of standard error and consistency and error bars. Tour magazine June/2010: == Model: A CLASS alx 680 spokes: 20/24 size (width x height): 19.1 x 40.8 mm aerodynamic 30/40/50 km/h: 5.6/13.2/25.8 Watts required energy acceleration (0 to 30 km/h): 139 Joule stiffness front/rear: 62/43 N/mm weight front/rear/quick release: 847/1029/-- gramms weight limit: none == == Model: Campagnolo Zonda spokes: 16/21 size (width x height): 20.5 x 25.6 mm aerodynamic 30/40/50 km/h: 6.4/15.1/29.5 W required energy acceleration (0 to 30 km/h): 117 Joule stiffness front/rear: 50/52 N/mm weight front/rear/quick release: 661/852/120 gramms weight limit: none == == Model: DT Swiss RR-1450 Tricom spokes: 18/24 size (width x height): 19.7 x 21 mm aerodynamic 30/40/50 km/h: 6.9/16.2/31.7 W required energy acceleration (0 to 30 km/h): 120 Joule stiffness front/rear: 47/39 N/mm weight front/rear/quick release: 690/855/93 gramms weight limit: 90 kg == == Model: Easton EA90 TT spokes: 16/20 size (width x height): 19.2 x 31.7 mm aerodynamic 30/40/50 km/h: 5.5/13.2/25.7 W required energy acceleration (0 to 30 km/h): 124 Joule stiffness front/rear: 31/43 N/mm weight front/rear/quick release: 714/912/120 gramms weight limit: none == == Model: Mavic Aksium spokes: 20/20 size (width x height): 20.1 x 20.9 mm aerodynamic 30/40/50 km/h: 7.2/17.2/35.5 W required energy acceleration (0 to 30 km/h): 133 Joule stiffness front/rear: 56/44 N/mm weight front/rear/quick release: 830/991/149 gramms weight limit: none == == Model: Mavic Ksyrium Elite spokes: 20/20 size (width x height): 19.5 x 22 mm aerodynamic 30/40/50 km/h: 7.2/17.2/33.5 W required energy acceleration (0 to 30 km/h): 119 Joule stiffness front/rear: 51/51 N/mm weight front/rear/quick release: 694/879/126 gramms weight limit: none == == Model: Mavic Ksyrium R-Sys SL spokes: 20/20 size (width x height): 19.5 x 22 mm aerodynamic 30/40/50 km/h: 9.6/22.7/44.2 W required energy acceleration (0 to 30 km/h): 108 Joule stiffness front/rear: 50/50 N/mm weight front/rear/quick release: 574/767/109 gramms weight limit: none == == Model: Reynolds Solitude spokes: 20/24 size (width x height): 19.3 x 30.4 mm aerodynamic 30/40/50 km/h: 6.6/15.5/30.3 W required energy acceleration (0 to 30 km/h): 122 Joule stiffness front/rear: 49/45 N/mm weight front/rear/quick release: 689/889/-- gramms weight limit: none == == Model: Ricthey WCS Zeta spokes: 20/24 size (width x height): 19.2 x 23.5 mm aerodynamic 30/40/50 km/h: 6.3/14.9/29.1 W required energy acceleration (0 to 30 km/h): 124 Joule stiffness front/rear: 41/42 N/mm weight front/rear/quick release: 689/954/82 gramms weight limit: none == == Model: Shimano Ultegra WH-6700 spokes: 16/20 size (width x height): 21.2 x 22.8 mm aerodynamic 30/40/50 km/h: 6.3/15/29.2 W required energy acceleration (0 to 30 km/h): 119 Joule stiffness front/rear: 42/43 N/mm weight front/rear/quick release: 692/972/122 gramms weight limit: none == == Model: SRAM S27 Al Comp spokes: 20/20 size (width x height): 19.3 x 26.5 mm aerodynamic 30/40/50 km/h: 6/14.2/27.8 W required energy acceleration (0 to 30 km/h): 126 Joule stiffness front/rear: 69/48 N/mm weight front/rear/quick release: 760/898/117 gramms weight limit: none == == Model: SRAM S30 Al Comp spokes: 20/20 size (width x height): 19.5 x 29.8 mm aerodynamic 30/40/50 km/h: 5.7/13.5/26.4 W required energy acceleration (0 to 30 km/h): 121 Joule stiffness front/rear: 60/39 N/mm weight front/rear/quick release: 711/840/117 gramms weight limit: none == == Model: TUNE Edelweisz spokes: 28/28 size (width x height): 19.3 x 20.8 mm aerodynamic 30/40/50 km/h: 6.9/16.4/32 W required energy acceleration (0 to 30 km/h): 118 Joule stiffness front/rear: 49/37 N/mm weight front/rear/quick release: 685/804/-- gramms weight limit: none == == Model: VELTEC Typhus spokes: 24/28 size (width x height): 19.7 x 41.6 mm aerodynamic 30/40/50 km/h: 6.3/15/29.4 W required energy acceleration (0 to 30 km/h): 141 Joule stiffness front/rear: 58/46 N/mm weight front/rear/quick release: 883/1052/117 gramms weight limit: none == == Model: VISION Trimax Pro spokes: 20/24 size (width x height): 18.4 x 30.1 mm aerodynamic 30/40/50 km/h: 6.3/15/29.3 W required energy acceleration (0 to 30 km/h): 120 Joule stiffness front/rear: 56/30 N/mm weight front/rear/quick release: 704/866/108 gramms weight limit: none == == Model: XTREME Aero Wheels III spokes: 20/20 size (width x height): 18.3 x 30.6 mm aerodynamic 30/40/50 km/h: 6.5/15.4/30.1 W required energy acceleration (0 to 30 km/h): 127 Joule stiffness front/rear: 61/41 N/mm weight front/rear/quick release: 778/911/136 gramms weight limit: none == 
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#2
February 3rd 11, 10:43 PM
posted to rec.bicycles.tech
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Tour magazine wheel test
frankenstein wrote:
I find it strange that wheel manufactures cannot do better in terms of rear wheel stiffness. I do not know where Tour magazine got the threshold value of 50 [N/mm] from. However, only Campa "Zonda", Mavic "KsyriumR-Sys SL" and "Elite" and the SRAM "S27" are close to 50 N/ mm. Most surprisingly the 20 spoke rear SRAM S27 which looks so fragile: radial lacing drive side, and 1x non drive side. Would have been interesting to see the test on a number of wheels in terms of standard error and consistency and error bars. These guys also did similar (same?) tests: http://www.rouesartisanales.com/article-15505311.html Lateral stiffness he http://www.rouesartisanales.com/article-23159755.html Why do manufacturers need to make rear wheels stiffer? Are racers consistently rubbing brake blocks during sprints? Narrow hubs make it difficult to provide more lateral stiffness. With the DS spokes near vertical, there's little angle brace to provide lateral stiffness. JS.
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#3
February 4th 11, 03:06 AM
posted to rec.bicycles.tech
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Tour magazine wheel test
On Feb 3, 1:08*pm, frankenstein wrote:
I find it strange that wheel manufactures cannot do better in terms of rear wheel stiffness. I do not know where Tour magazine got the threshold value of 50 [N/mm] from. However, only Campa "Zonda", Mavic "KsyriumR-Sys *SL" and "Elite" and the SRAM "S27" are close to 50 N/ mm. Most surprisingly the 20 spoke rear SRAM S27 which looks so fragile: radial lacing drive side, and 1x non drive side. Would have been interesting to see the test on a number of wheels in terms of standard error and consistency and error bars. Tour magazine June/2010: == Model: A CLASS alx 680 spokes: 20/24 size (width x height): 19.1 x 40.8 mm aerodynamic 30/40/50 km/h: 5.6/13.2/25.8 Watts required energy acceleration (0 to 30 km/h): 139 Joule stiffness front/rear: 62/43 N/mm weight front/rear/quick release: 847/1029/-- gramms weight limit: none == == Model: Campagnolo Zonda spokes: 16/21 size (width x height): 20.5 x 25.6 mm aerodynamic 30/40/50 km/h: 6.4/15.1/29.5 W required energy acceleration (0 to 30 km/h): 117 Joule stiffness front/rear: 50/52 N/mm weight front/rear/quick release: 661/852/120 gramms weight limit: none == == Model: DT Swiss RR-1450 Tricom spokes: 18/24 size (width x height): 19.7 x 21 mm aerodynamic 30/40/50 km/h: 6.9/16.2/31.7 W required energy acceleration (0 to 30 km/h): 120 Joule stiffness front/rear: 47/39 N/mm weight front/rear/quick release: 690/855/93 gramms weight limit: 90 kg == == Model: Easton EA90 TT spokes: 16/20 size (width x height): 19.2 x 31.7 mm aerodynamic 30/40/50 km/h: 5.5/13.2/25.7 W required energy acceleration (0 to 30 km/h): 124 Joule stiffness front/rear: 31/43 N/mm weight front/rear/quick release: 714/912/120 gramms weight limit: none == == Model: Mavic Aksium spokes: 20/20 size (width x height): 20.1 x 20.9 mm aerodynamic 30/40/50 km/h: 7.2/17.2/35.5 W required energy acceleration (0 to 30 km/h): 133 Joule stiffness front/rear: 56/44 N/mm weight front/rear/quick release: 830/991/149 gramms weight limit: none == == Model: Mavic Ksyrium Elite spokes: 20/20 size (width x height): 19.5 x 22 mm aerodynamic 30/40/50 km/h: 7.2/17.2/33.5 W required energy acceleration (0 to 30 km/h): 119 Joule stiffness front/rear: 51/51 N/mm weight front/rear/quick release: 694/879/126 gramms weight limit: none == == Model: Mavic Ksyrium R-Sys SL spokes: 20/20 size (width x height): 19.5 x 22 mm aerodynamic 30/40/50 km/h: 9.6/22.7/44.2 W required energy acceleration (0 to 30 km/h): 108 Joule stiffness front/rear: 50/50 N/mm weight front/rear/quick release: 574/767/109 gramms weight limit: none == == Model: Reynolds Solitude spokes: 20/24 size (width x height): 19.3 x 30.4 mm aerodynamic 30/40/50 km/h: 6.6/15.5/30.3 W required energy acceleration (0 to 30 km/h): 122 Joule stiffness front/rear: 49/45 N/mm weight front/rear/quick release: 689/889/-- gramms weight limit: none == == Model: Ricthey WCS Zeta spokes: 20/24 size (width x height): 19.2 x 23.5 mm aerodynamic 30/40/50 km/h: 6.3/14.9/29.1 W required energy acceleration (0 to 30 km/h): 124 Joule stiffness front/rear: 41/42 N/mm weight front/rear/quick release: 689/954/82 gramms weight limit: none == == Model: Shimano Ultegra WH-6700 spokes: 16/20 size (width x height): 21.2 x 22.8 mm aerodynamic 30/40/50 km/h: 6.3/15/29.2 W required energy acceleration (0 to 30 km/h): 119 Joule stiffness front/rear: 42/43 N/mm weight front/rear/quick release: 692/972/122 gramms weight limit: none == == Model: SRAM S27 Al Comp spokes: 20/20 size (width x height): 19.3 x 26.5 mm aerodynamic 30/40/50 km/h: 6/14.2/27.8 W required energy acceleration (0 to 30 km/h): 126 Joule stiffness front/rear: 69/48 N/mm weight front/rear/quick release: 760/898/117 gramms weight limit: none == == Model: SRAM S30 Al Comp spokes: 20/20 size (width x height): 19.5 x 29.8 mm aerodynamic 30/40/50 km/h: 5.7/13.5/26.4 W required energy acceleration (0 to 30 km/h): 121 Joule stiffness front/rear: 60/39 N/mm weight front/rear/quick release: 711/840/117 gramms weight limit: none == == Model: TUNE Edelweisz spokes: 28/28 size (width x height): 19.3 x 20.8 mm aerodynamic 30/40/50 km/h: 6.9/16.4/32 W required energy acceleration (0 to 30 km/h): 118 Joule stiffness front/rear: 49/37 N/mm weight front/rear/quick release: 685/804/-- gramms weight limit: none == == Model: VELTEC Typhus spokes: 24/28 size (width x height): 19.7 x 41.6 mm aerodynamic 30/40/50 km/h: 6.3/15/29.4 W required energy acceleration (0 to 30 km/h): 141 Joule stiffness front/rear: 58/46 N/mm weight front/rear/quick release: 883/1052/117 gramms weight limit: none == == Model: VISION Trimax Pro spokes: 20/24 size (width x height): 18.4 x 30.1 mm aerodynamic 30/40/50 km/h: 6.3/15/29.3 W required energy acceleration (0 to 30 km/h): 120 Joule stiffness front/rear: 56/30 N/mm weight front/rear/quick release: 704/866/108 gramms weight limit: none == == Model: XTREME Aero Wheels III spokes: 20/20 size (width x height): 18.3 x 30.6 mm aerodynamic 30/40/50 km/h: 6.5/15.4/30.1 W required energy acceleration (0 to 30 km/h): 127 Joule stiffness front/rear: 61/41 N/mm weight front/rear/quick release: 778/911/136 gramms weight limit: none == Why are you worried about wheel stiffness? The guys I ride with think about weight, aerodynamics, durability and/or cost. Stiffness doesn't seem to be an issue. Cheers, Sergio Moretti
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#4
February 4th 11, 03:35 AM
posted to rec.bicycles.tech
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Tour magazine wheel test
On 2/3/2011 1:08 PM, frankenstein wrote:
I find it strange that wheel manufactures cannot do better in terms of rear wheel stiffness. I do not know where Tour magazine got the threshold value of 50 [N/mm] from. However, only Campa "Zonda", Mavic "KsyriumR-Sys SL" and "Elite" and the SRAM "S27" are close to 50 N/ mm. Most surprisingly the 20 spoke rear SRAM S27 which looks so fragile: radial lacing drive side, and 1x non drive side. Would have been interesting to see the test on a number of wheels in terms of standard error and consistency and error bars. Tour magazine June/2010: == Model: A CLASS alx 680 spokes: 20/24 size (width x height): 19.1 x 40.8 mm aerodynamic 30/40/50 km/h: 5.6/13.2/25.8 Watts required energy acceleration (0 to 30 km/h): 139 Joule stiffness front/rear: 62/43 N/mm weight front/rear/quick release: 847/1029/-- gramms weight limit: none == == Model: Campagnolo Zonda spokes: 16/21 size (width x height): 20.5 x 25.6 mm aerodynamic 30/40/50 km/h: 6.4/15.1/29.5 W required energy acceleration (0 to 30 km/h): 117 Joule stiffness front/rear: 50/52 N/mm weight front/rear/quick release: 661/852/120 gramms weight limit: none == == Model: DT Swiss RR-1450 Tricom spokes: 18/24 size (width x height): 19.7 x 21 mm aerodynamic 30/40/50 km/h: 6.9/16.2/31.7 W required energy acceleration (0 to 30 km/h): 120 Joule stiffness front/rear: 47/39 N/mm weight front/rear/quick release: 690/855/93 gramms weight limit: 90 kg == == Model: Easton EA90 TT spokes: 16/20 size (width x height): 19.2 x 31.7 mm aerodynamic 30/40/50 km/h: 5.5/13.2/25.7 W required energy acceleration (0 to 30 km/h): 124 Joule stiffness front/rear: 31/43 N/mm weight front/rear/quick release: 714/912/120 gramms weight limit: none == == Model: Mavic Aksium spokes: 20/20 size (width x height): 20.1 x 20.9 mm aerodynamic 30/40/50 km/h: 7.2/17.2/35.5 W required energy acceleration (0 to 30 km/h): 133 Joule stiffness front/rear: 56/44 N/mm weight front/rear/quick release: 830/991/149 gramms weight limit: none == == Model: Mavic Ksyrium Elite spokes: 20/20 size (width x height): 19.5 x 22 mm aerodynamic 30/40/50 km/h: 7.2/17.2/33.5 W required energy acceleration (0 to 30 km/h): 119 Joule stiffness front/rear: 51/51 N/mm weight front/rear/quick release: 694/879/126 gramms weight limit: none == == Model: Mavic Ksyrium R-Sys SL spokes: 20/20 size (width x height): 19.5 x 22 mm aerodynamic 30/40/50 km/h: 9.6/22.7/44.2 W required energy acceleration (0 to 30 km/h): 108 Joule stiffness front/rear: 50/50 N/mm weight front/rear/quick release: 574/767/109 gramms weight limit: none == == Model: Reynolds Solitude spokes: 20/24 size (width x height): 19.3 x 30.4 mm aerodynamic 30/40/50 km/h: 6.6/15.5/30.3 W required energy acceleration (0 to 30 km/h): 122 Joule stiffness front/rear: 49/45 N/mm weight front/rear/quick release: 689/889/-- gramms weight limit: none == == Model: Ricthey WCS Zeta spokes: 20/24 size (width x height): 19.2 x 23.5 mm aerodynamic 30/40/50 km/h: 6.3/14.9/29.1 W required energy acceleration (0 to 30 km/h): 124 Joule stiffness front/rear: 41/42 N/mm weight front/rear/quick release: 689/954/82 gramms weight limit: none == == Model: Shimano Ultegra WH-6700 spokes: 16/20 size (width x height): 21.2 x 22.8 mm aerodynamic 30/40/50 km/h: 6.3/15/29.2 W required energy acceleration (0 to 30 km/h): 119 Joule stiffness front/rear: 42/43 N/mm weight front/rear/quick release: 692/972/122 gramms weight limit: none == == Model: SRAM S27 Al Comp spokes: 20/20 size (width x height): 19.3 x 26.5 mm aerodynamic 30/40/50 km/h: 6/14.2/27.8 W required energy acceleration (0 to 30 km/h): 126 Joule stiffness front/rear: 69/48 N/mm weight front/rear/quick release: 760/898/117 gramms weight limit: none == == Model: SRAM S30 Al Comp spokes: 20/20 size (width x height): 19.5 x 29.8 mm aerodynamic 30/40/50 km/h: 5.7/13.5/26.4 W required energy acceleration (0 to 30 km/h): 121 Joule stiffness front/rear: 60/39 N/mm weight front/rear/quick release: 711/840/117 gramms weight limit: none == == Model: TUNE Edelweisz spokes: 28/28 size (width x height): 19.3 x 20.8 mm aerodynamic 30/40/50 km/h: 6.9/16.4/32 W required energy acceleration (0 to 30 km/h): 118 Joule stiffness front/rear: 49/37 N/mm weight front/rear/quick release: 685/804/-- gramms weight limit: none == == Model: VELTEC Typhus spokes: 24/28 size (width x height): 19.7 x 41.6 mm aerodynamic 30/40/50 km/h: 6.3/15/29.4 W required energy acceleration (0 to 30 km/h): 141 Joule stiffness front/rear: 58/46 N/mm weight front/rear/quick release: 883/1052/117 gramms weight limit: none == == Model: VISION Trimax Pro spokes: 20/24 size (width x height): 18.4 x 30.1 mm aerodynamic 30/40/50 km/h: 6.3/15/29.3 W required energy acceleration (0 to 30 km/h): 120 Joule stiffness front/rear: 56/30 N/mm weight front/rear/quick release: 704/866/108 gramms weight limit: none == == Model: XTREME Aero Wheels III spokes: 20/20 size (width x height): 18.3 x 30.6 mm aerodynamic 30/40/50 km/h: 6.5/15.4/30.1 W required energy acceleration (0 to 30 km/h): 127 Joule stiffness front/rear: 61/41 N/mm weight front/rear/quick release: 778/911/136 gramms weight limit: none == Note the three Mavic wheels have the highest aerodynamic drag of all those tested. -- Tºm Shermªn - 42.435731,-83.985007 I am a vehicular cyclist.
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#5
February 4th 11, 04:43 AM
posted to rec.bicycles.tech
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Tour magazine wheel test
was looking at the available material for each wheel. incroyable*5
I know nothing here. Is this a Euro amatuer racer thing with wheels or both Am and Euro ? are amateur racers engaging in wheel exotica or does Shimano or ??? bear the largest share - how does that use breakdown with manufacturers ? is exotica relevant at the finish line ? like in one year, I asume thru horse country, does Typhus win and the next year Veltec or is it roadsurface or what ?
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#6
February 4th 11, 04:51 AM
posted to rec.bicycles.tech
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Tour magazine wheel test
Tºm Shermªn™ °_° wrote:
On 2/3/2011 1:08 PM, frankenstein wrote: I find it strange that wheel manufactures cannot do better in terms of rear wheel stiffness. I do not know where Tour magazine got the threshold value of 50 [N/mm] from. However, only Campa "Zonda", Mavic "KsyriumR-Sys SL" and "Elite" and the SRAM "S27" are close to 50 N/ mm. Most surprisingly the 20 spoke rear SRAM S27 which looks so fragile: radial lacing drive side, and 1x non drive side. Would have been interesting to see the test on a number of wheels in terms of standard error and consistency and error bars. snip Note the three Mavic wheels have the highest aerodynamic drag of all those tested. Not very surprising, considering one of them is an abomination (R-SYS) and they are all at the low height end of the group tested (around 22mm). The name "Ksyrium Elite" doesn't tell you the model. Elites changed in 2010 to use thin steel bladed spokes which may improve it a little in the aero drag arena. JS.
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#7
February 4th 11, 07:50 AM
posted to rec.bicycles.tech
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Tour magazine wheel test
On Feb 4, 4:51*am, James wrote:
T m Sherm n _ wrote: On 2/3/2011 1:08 PM, frankenstein wrote: I find it strange that wheel manufactures cannot do better in terms of rear wheel stiffness. I do not know where Tour magazine got the threshold value of 50 [N/mm] from. However, only Campa "Zonda", Mavic "KsyriumR-Sys *SL" and "Elite" and the SRAM "S27" are close to 50 N/ mm. Most surprisingly the 20 spoke rear SRAM S27 which looks so fragile: radial lacing drive side, and 1x non drive side. Would have been interesting to see the test on a number of wheels in terms of standard error and consistency and error bars. snip Note the three Mavic wheels have the highest aerodynamic drag of all those tested. Not very surprising, considering one of them is an abomination (R-SYS) and they are all at the low height end of the group tested (around 22mm). The name "Ksyrium Elite" doesn't tell you the model. *Elites changed in 2010 to use thin steel bladed spokes which may improve it a little in the aero drag arena. JS. The test was conducted in the year of 2010. So a got bet is to assume all the wheels are from the production year 2010. The full titel of the article: "Metal Arbeiter" (metal worker), Tour, 6/2010. The Mavic wheels did not do so bad in terms of aerodynamics. It is just 3 watts (in relation to the better ones) at 40 km/h. The Tour article mentions this translates into about a 0.5 km/h (I gues this is 0.3 miles/hour) instantaneous speed advantage at 30 km/h. I do not think this also turns into a 0.5 km/h advantage of "average speed". I think stiffnes (lateral) is important. I could notice the difference between my stock Mavic Ksyrium Aksiums on my 2008 Focus road bike and to the upgrade to Mavic Ksyriums Equipe 2009: the Equipe (everything the same in terms of bike set up) did not rub brake pads. The Tour test only considers "inertia" (to bring the wheel from 0 to 30 km/h). Not sure if they implicitely test for "torque" as well. I often see Mavic wheels not doing so good when they are put under the torque test. I was interested in the test because I have short listed the follwoing wheels for my new frame: Mavic Ksyrium Elite or SRAM S27 (to match my Rival). However, I cannot imagine that the SRAM S29 (only 1x NDS lacing) will last long. Never had a problem with my Equipe (used them about 8000 km in pothole littered Scotland) though (albeit NDS lacing is different than 1x). I am realsitic this are boutique wheels. And they are not always the result of "research". The 2011 Mavic Equipe wheels for instance feature again 20 spokes (theoretically larger drag) in the front wheel (my 2009 Equipe has 18). I asked Mavic and they in due dilligence replied this is a way to reduce costs for them because they may now be able to use the same 20 spoked hub for the Aksiums and Equipe series.
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#8
February 4th 11, 07:56 AM
posted to rec.bicycles.tech
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Tour magazine wheel test
On Feb 4, 7:50*am, frankenstein wrote:
I think stiffnes (lateral) is important. I could notice the difference between my stock Mavic Ksyrium Aksiums on my 2008 Focus road bike and to the upgrade to Mavic Ksyriums Equipe 2009 Sure it is a function of body weight. I do not know my exact weight, though, assume it is about 72 kg (I am about 180 [cm] tall).
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#9
February 4th 11, 09:44 AM
posted to rec.bicycles.tech
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Tour magazine wheel test
T♦m Shermâ™*n wrote:
Note the three Mavic wheels have the highest aerodynamic drag of all those tested. Note also that the Alex wheels have the lowest drag of all the wheels tested. Chalo
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#10
February 4th 11, 05:02 PM
posted to rec.bicycles.tech
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Tour magazine wheel test
On Feb 4, 3:44Â*am, Chalo wrote:
T♦m Shermâ™*n wrote: Note the three Mavic wheels have the highest aerodynamic drag of all those tested. Note also that the Alex wheels have the lowest drag of all the wheels tested. Yabbut, those deep DA22 rims give a 300g penalty!11
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