2012年4月12日 星期四

2012 Paris-Roubaix 的輪子

Paris-Roubiax 的輪胎與胎壓







輪:現在已經有越來越多車隊使用碳纖輪下去比賽了,傳統輪組越來越罕見...特別是碳纖維輪的空力表現,在250+km 的比賽中還是會有隱而未現的影響...

胎:輪胎贊助商在這場比賽中會比較放任車隊採用非贊助的胎,特別是Dugast 跟FMB 的客製胎...但也有例外:MAVIC...他們根本沒生產肥胎,被贊助的車隊想用非M 牌胎,就只好把MAVIC 品牌標蓋上...就輪胎寬度來說--最細的是Ag2r La Mondiale 使用的米奇林胎 24.7mm,最寬的是Europcar ,他們把30mm 的胎裝在可樂果的CX 車上...

胎壓:這是最難搞的...通常是越高大的車手使用較高的胎壓,但湯不能採用全場最低的胎壓,這...機械師通常很頭痛,甚至他們會測量輪胎消氣的速度,讓前100km 的柏油路面可以用較高胎壓省點力氣,到了石板路卻消得剛剛好...

防漏劑:唉唉...用?還是不用?這是目前最具爭議的議題...有一點是確定的,液態乳膠一點幫助也沒有,因為大多數爆胎都是蛇咬...不過給資料的16 支車隊中7 支有用,9 支沒用...技師沒特別提他們用什麼產品,不過車隊巴士維修區有發現一些Stan's liquid latex, Vittoria Pit Stop 的罐子...



下列是車隊使用的輪,胎,胎壓,防漏劑...參考參考

Omega Pharma-Quick Step
Wheels: Zipp 303 Firecrest
Tire: FMB cotton casing
Size: 27mm
Measured size: 28.2mm
Pressure front: 59.5 psi Boonen, 58 psi Chavanel (58 psi or less in the rain)
Pressure rear: 62.4 psi Boonen, 59.5 psi Chavanel
Sealant: no

Movistar
Wheels: Campagnolo Hyperon
Tire: Continental Competition
Size: 27mm
Measured size: 27.8mm
Pressure front: 85 psi
Pressure rear: 87 psi
Sealant: yes

Liquigas-Cannondale
Wheels: Mavic M40
Tire: no markings, looked like Veloflex
Size: ?
Measured size: 25.1mm
Pressure front: secret
Pressure rear: secret
Sealant: no

FDJ-BigMat
Wheels: Shimano C35
Tire: Hutchinson labeled Dugast
Size: 27 and 30mm
Measured size: 28.9mm (for the 27mm)
Pressure front: 72.5 psi (Rollin)
Pressure rear: 80 psi (Rollin)
Sealant: yes

Europcar
Wheels: Campagnolo Bora
Tire: Hutchinson (FMB or Dugast)
Size: no marking
Measured size: 29.2mm
Pressure front: 72.5 psi
Pressure rear: 80 psi
Sealant: no, but they did last year

Lotto-Belisol
Wheels: Campagnolo Record hubs with Ambrosio Nemesis rims
Tire: Continental Competition
Size: 27mm
Measured size: 27.2mm
Pressure front: 67-72 psi
Pressure rear: 70-80 psi
Sealant: no

Saxo Bank
Wheels: Zipp 303 Firecrest
Tire: Specialized (FMB Paris Roubaix cotton casing)
Size: 27mm
Measured size: 28.1mm
Pressure front: secret
Pressure rear: secret
Sealant: yes

Radioshack-Nissan
Wheels: Bontrager
Tire: FMB Paris Roubaix
Size: 27mm
Measured size: 28.3mm
Pressure front: 80 psi
Pressure rear: 87 psi
Sealant: no

Garmin-Barracuda
Wheels: Mavic M40
Tire: “French handmade provided by Mavic” FMB
Size: 27mm
Measured size: 28.5
Pressure front: 62.5 psi
Pressure rear: 72 psi
Sealant: no

GreenEdge
Wheels: Shimano C35/DA hub w/ Ambrosio “PRO” rim
Tire: Continental Competition
Size: 25 and 28mm
Measured size: 24.8 and 28.5mm
Pressure front: 76.9 psi
Pressure rear: 82.7 psi
Sealant: no; “We were told by Continental that it doesn’t work. The sealant only hits the top of the tread, not the sides. It doesn’t stick to the sidewall of the tires and that’s where the tires pinch at Roubaix,” said mechanic Craig Geater.

Sky
Wheels: Shimano C35
Tire: FMB Paris Roubaix
Size: 27mm
Measured size: 27.9mm
Pressure front: 67.4 psi
Pressure rear: 74.0 psi
Sealant: yes; “If it helps the riders get to the end of a sector, maybe it doesn’t stop a puncture, but it does slow it down. If so, it’s worth a shot,” said Richard Lambert, one of Sky’s mechanics.

Katusha
Wheels: Mavic M40/Cosmic Carbone Ultimate/aluminum rim mix
Tire: Mavic SSC-labeled Challenge Parigi-Roubaix
Size: 27mm
Measured size: 27.9mm
Pressure front: less than 87 psi
Pressure rear: less than 87 psi
Sealant: yes, liquid latex

Cofidis
Wheels: American Classic Carbon 38
Tire: Vittoria Corsa CX
Size: 25mm
Measured size: 25.1mm
Pressure front: 72.5 psi
Pressure rear: 80 psi
Sealant: no

Saur-Sojasun
Wheels: “Corima” Dura-Ace or Ultegra hubs on Ambrosio Nemesis rims
Tire: Panaracer-labeled Veloflex
Size: 27mm
Measured size: 26.0mm
Pressure front: 72 psi
Pressure rear: 80 psi
Sealant: no

Lampre-ISD
Wheels: Campagnolo Record hubs with Ambrosio rims
Tire: Vittoria Pavé
Size: 27mm
Measured size: 26.0mm
Pressure front: 80 psi
Pressure rear: 87 psi
Sealant: yes, put in on race morning (Vittoria Pit Stop spotted in the team truck)

Ag2r La Mondiale
Wheels: Reynolds 32
Tire: Michelin tubulars (prototype rear)
Size: no markings
Measured size: 26.0mm front/24.7mm rear
Pressure front: 65 psi
Pressure rear: 71 psi
Sealant: yes

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