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Beloki losing rear tire... Tubular problem?
When reading that Beloki had rolled his rear tire, it brought to mind
two things; first, Jobst's assertions that tubulars are bad in the alps due to melting glue, and second, that heavy rear braking in that situation has been discussed as a bad thing in this group. He was also using an 18mm tire. Interesting, when some using clinchers don't seem slowed at all, and he might not have so many broken bones with them. Whitfit. |
#2
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Beloki losing rear tire... Tubular problem?
An anonymous poster wrote:
When reading that Beloki had rolled his rear tire, it brought to mind two things; first, Jobst's assertions that tubulars are bad in the alps due to melting glue, and second, that heavy rear braking in that situation has been discussed as a bad thing in this group. He was also using an 18mm tire. Interesting, when some using clinchers don't seem slowed at all, and he might not have so many broken bones with them. Could be, but it could also be that the rolled tub was effect, not pause. I haven't seen the video yet, but it was mentioned that he had fishtailed. This suggests to me that he may have used his rear brake when he shouldn't have. See: http://sheldonbrown.com/brakturn.html Sheldon "One Brake At A Time" Brown +---------------------------------------------------------+ | It is good to learn from your mistakes; | | It is better to learn from the mistakes of others. | +---------------------------------------------------------+ Harris Cyclery, West Newton, Massachusetts Phone 617-244-9772 FAX 617-244-1041 http://harriscyclery.com Hard-to-find parts shipped Worldwide http://captainbike.com http://sheldonbrown.com |
#3
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Beloki losing rear tire... Tubular problem?
In article ,
Sheldon Brown wrote: An anonymous poster wrote: When reading that Beloki had rolled his rear tire, it brought to mind two things; first, Jobst's assertions that tubulars are bad in the alps due to melting glue, and second, that heavy rear braking in that situation has been discussed as a bad thing in this group. He was also using an 18mm tire. Interesting, when some using clinchers don't seem slowed at all, and he might not have so many broken bones with them. Big Mig used clinchers in the mountains, presumably for this reason as a large and heavy rider he was going to be braking hard. Could be, but it could also be that the rolled tub was effect, not pause. I haven't seen the video yet, but it was mentioned that he had fishtailed. This suggests to me that he may have used his rear brake when he shouldn't have. The video clip I saw on the evening news showed a dramatic fishtail- almost sideways in one direction, then the other, and *boom* he hit the pavement hard. Followed by Armstrong plowing off the road and through a field basically down the fall line, then hopping off the bike and running onto the road and remounting. Not quite with the smooth cyclo-cross style of, say, Daniele Pontoni or Adri van der Poel, but entertaining none the less. He must have been ****ting bricks! |
#4
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Beloki losing rear tire... Tubular problem?
Tim McNamara wrote let it be known in
: Followed by Armstrong plowing off the road and through a field basically down the fall line, then hopping off the bike and running onto the road and remounting. Not quite with the smooth cyclo-cross style of, say, Daniele Pontoni or Adri van der Poel, but entertaining none the less. He must have been ****ting bricks! Did you catch the post-race interview with Lance? He was asked if he had done any cyclo-cross racing this year. His answer was 'Just one race, plus today makes two'. -- Curt Bousquet moc.enilnacs@PTNN Reverse for email Road biking in Southern VT and Western Mass. My 2003 bike log: http://www.scanline.com/bikelog/2003.html |
#6
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Beloki losing rear tire... Tubular problem?
Jim Edgar wrote:
Sheldon Brown at wrote on 7/14/03 2:22 PM: An anonymous poster wrote: When reading that Beloki had rolled his rear tire, it brought to mind two things; first, Jobst's assertions that tubulars are bad in the alps due to melting glue, and second, that heavy rear braking in that situation has been discussed as a bad thing in this group. He was also using an 18mm tire. Interesting, when some using clinchers don't seem slowed at all, and he might not have so many broken bones with them. Could be, but it could also be that the rolled tub was effect, not pause. I haven't seen the video yet, but it was mentioned that he had fishtailed. This suggests to me that he may have used his rear brake when he shouldn't have. Hard to say, as the footage was all from the helicopter. It was, however, a brutal crash - went down hard on his leg/hip, slid for way too long on his elbow and whip-snapped his shoulder and head down onto the pavement. Reports have him with a broken femur and elbow. How it appeared on the OLN feed this AM: Vino was about 15 seconds ahead at the crest of the hill, and was descending like a madman. Reported ambient temps were low-to-mid-90's (F). Comments had been made about the "softness" of the French roads in this region. Beloki was leading Armstrong, who had five or six riders behind him. The verbal time gap was given as 13 seconds. Vinokourov approaches the "double bowknot" set of horseshoe turns on fairly narrow roads. This will be where Beloki goes down. The screen computer shows a 10 second gap. The moto camera was behind Vinokourov as he went through that section - you can see very shiny spots on the roadway as Vino speeds through the 90 degree left before the double bowknot. Phil states that you can see the melted spots in the roadway, and as Vino makes it through continues, "..that was a rather dodgy corner". The moto camera seems to slow and shift a bit, as the cameraman has trouble keep Vino in the frame. Then the problems begin. Armstrong seems to drop back from Beloki, who continues pressing into the turn. As he begins to set for the turn he is closer to the center of the road than Armstrong. He fishtales left, and Armstrong begins to make up ground, as though Beloki has hit the brakes. The skid continues, rear tire breaking further to his left until it is obscured by Beloki's seated body. The bike seems to continue sliding out to the left, as evidenced by his body english. He has the front of the bike pointed well to recover, although it isn't clear he would make the turn at this point. While the rear wheel is behind his body (bike angled maybe 30-40 degrees), the tire appears behind him. It has come off the rim at this point. Definitely moves off the rim and is visible as a separate object. The rear rim must've dug in, as at this point, it becomes airborne, swinging through the air to a nearly 30 degree angle to the right of Beloki. It knifes down into the tarmac and the bike's forward motion is arrested. At this point, the bike swings over the rear rim, Beloki comes down hard on his right leg and the damage progresses. Armstrong in a post race interviews described Beloki as hitting the brakes hard, then locking up the rear, then rolling the tire, which seems consistent with the images. Sad, sad stuff.... -- Jim http://www.cyclfiend.com/http://www.cyclfiend.com[/url] http://lists.cy- clofiend.com/mailman/listinfo/race-report"]http://lists.cyclofiend.com/- mailman/listinfo/race-report Armstrong said in his interview with Frankie Andreu that Beloki's tire rolled and THEN it blew up. No way a clincher would do that of course but Lance might not be remembering everything exactly as it happened either. I couldn't find who ONCE's tire sponsors are. Some Michelin-sponsored teams have a deal to only ride clinchers. -- Check out my bike blog! http://diabloscott.blogspot.com -------------------------- Posted via cyclingforums.com http://www.cyclingforums.com |
#7
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Beloki losing rear tire... Tubular problem?
In article ,
DiabloScott wrote: Armstrong said in his interview with Frankie Andreu that Beloki's tire rolled and THEN it blew up. No way a clincher would do that of course but Lance might not be remembering everything exactly as it happened either. Yeah, it's not like events were happening quickly or anything! ;-) |
#8
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Beloki losing rear tire... Tubular problem?
An anonymous poster wrote:
When reading that Beloki had rolled his rear tire, it brought to mind two things; first, Jobst's assertions that tubulars are bad in the alps due to melting glue, and second, that heavy rear braking in that situation has been discussed as a bad thing in this group. He was also using an 18mm tire. Interesting, when some using clinchers don't seem slowed at all, and he might not have so many broken bones with them. I commented: Could be, but it could also be that the rolled tub was effect, not pause. I haven't seen the video yet, but it was mentioned that he had fishtailed. This suggests to me that he may have used his rear brake when he shouldn't have. Jim Edgar wrote: Hard to say, as the footage was all from the helicopter. It was, however, a brutal crash - went down hard on his leg/hip, slid for way too long on his elbow and whip-snapped his shoulder and head down onto the pavement. Reports have him with a broken femur and elbow. How it appeared on the OLN feed this AM: Vino was about 15 seconds ahead at the crest of the hill, and was descending like a madman. Reported ambient temps were low-to-mid-90's (F). Comments had been made about the "softness" of the French roads in this region. Beloki was leading Armstrong, who had five or six riders behind him. The verbal time gap was given as 13 seconds. Vinokourov approaches the "double bowknot" set of horseshoe turns on fairly narrow roads. This will be where Beloki goes down. The screen computer shows a 10 second gap. I have since had the opportunity to watch this several times in slo-mo. It appears to me that the skid began _before_ the turn, as Beloki was trying to slow in preparation for the turn, but he had not begun to actually lean over into the sharp part of the turn. I believe this crash would not have happened if he had not used his rear brake. Lance went over the same pavement, also braking, and didn't fishtail. The moto camera was behind Vinokourov as he went through that section - you can see very shiny spots on the roadway as Vino speeds through the 90 degree left before the double bowknot. Phil states that you can see the melted spots in the roadway, and as Vino makes it through continues, "..that was a rather dodgy corner". The moto camera seems to slow and shift a bit, as the cameraman has trouble keep Vino in the frame. Do you really believe that Phil Liggett's commentary on the highlights show is done in real time? I have always assumed that he puts his script together after the event, matching the footage, which he has already seen. This isn't the first time I've seen a bit of foreshadowing in his copy. He's good at his job, so he knows how to sound surprised nonetheless. I'm very sorry that Beloki was injured, and wouldn't normally want to criticize him in a public forum like this, if it weren't for my belief that this crash offers a valuable lesson to all cyclists on the dangers of inappropriate use of the rear brake. Again, for those who tuned in late, here's my article on this important topic. It might save your life: http://sheldonbrown.com/brakturn.html Sheldon "Front Brake" Brown +-----------------------------------------------------------------+ | The man who never alters his opinions is like standing water, | | and breeds reptiles of the mind. --William Blake | +-----------------------------------------------------------------+ Harris Cyclery, West Newton, Massachusetts Phone 617-244-9772 FAX 617-244-1041 http://harriscyclery.com Hard-to-find parts shipped Worldwide http://captainbike.com http://sheldonbrown.com |
#9
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Beloki losing rear tire... Tubular problem?
In article ,
Sheldon Brown wrote: Do you really believe that Phil Liggett's commentary on the highlights show is done in real time? I have always assumed that he puts his script together after the event, matching the footage, which he has already seen. This isn't the first time I've seen a bit of foreshadowing in his copy. He's good at his job, so he knows how to sound surprised nonetheless. Liggett and Sherwen sometime mention that they are commentating live, watching in the press area at the finish on TV monitors. For the daily TV broadcasts I suspect this is probably the case, and CBS probably just picked up the video from the UK and edited it. He does do some overdubbing for the WCP videos, and comes here to Minnesota for those (or at least used to). |
#10
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Beloki losing rear tire... Tubular problem?
"Sheldon Brown" wrote in message
... An anonymous poster wrote: When reading that Beloki had rolled his rear tire, it brought to mind two things; first, Jobst's assertions that tubulars are bad in the alps due to melting glue, and second, that heavy rear braking in that situation has been discussed as a bad thing in this group. He was also using an 18mm tire. Interesting, when some using clinchers don't seem slowed at all, and he might not have so many broken bones with them. I commented: Could be, but it could also be that the rolled tub was effect, not pause. I haven't seen the video yet, but it was mentioned that he had fishtailed. This suggests to me that he may have used his rear brake when he shouldn't have. Jim Edgar wrote: Hard to say, as the footage was all from the helicopter. It was, however, a brutal crash - went down hard on his leg/hip, slid for way too long on his elbow and whip-snapped his shoulder and head down onto the pavement. Reports have him with a broken femur and elbow. How it appeared on the OLN feed this AM: Vino was about 15 seconds ahead at the crest of the hill, and was descending like a madman. Reported ambient temps were low-to-mid-90's (F). Comments had been made about the "softness" of the French roads in this region. Beloki was leading Armstrong, who had five or six riders behind him. The verbal time gap was given as 13 seconds. Vinokourov approaches the "double bowknot" set of horseshoe turns on fairly narrow roads. This will be where Beloki goes down. The screen computer shows a 10 second gap. I have since had the opportunity to watch this several times in slo-mo. It appears to me that the skid began _before_ the turn, as Beloki was trying to slow in preparation for the turn, but he had not begun to actually lean over into the sharp part of the turn. I believe this crash would not have happened if he had not used his rear brake. Lance went over the same pavement, also braking, and didn't fishtail. The moto camera was behind Vinokourov as he went through that section - you can see very shiny spots on the roadway as Vino speeds through the 90 degree left before the double bowknot. Phil states that you can see the melted spots in the roadway, and as Vino makes it through continues, "..that was a rather dodgy corner". The moto camera seems to slow and shift a bit, as the cameraman has trouble keep Vino in the frame. Do you really believe that Phil Liggett's commentary on the highlights show is done in real time? I have always assumed that he puts his script together after the event, matching the footage, which he has already seen. This isn't the first time I've seen a bit of foreshadowing in his copy. He's good at his job, so he knows how to sound surprised nonetheless. I was watching the live coverage this morning, and Phil did indeed make that comment about the "rather dodgy corner" Vino negotiated, moments before Beloki's crash. In fact, he had commented several times on earlier descents about the treacherous nature of the road surface, due to the "bitumen melting" (although I doubt that was really a contributing factor). ~_-* ....G/ \G http://www.shastasoftware.com Developers of CycliStats - Software for Cyclists I'm very sorry that Beloki was injured, and wouldn't normally want to criticize him in a public forum like this, if it weren't for my belief that this crash offers a valuable lesson to all cyclists on the dangers of inappropriate use of the rear brake. Again, for those who tuned in late, here's my article on this important topic. It might save your life: http://sheldonbrown.com/brakturn.html Sheldon "Front Brake" Brown +-----------------------------------------------------------------+ | The man who never alters his opinions is like standing water, | | and breeds reptiles of the mind. --William Blake | +-----------------------------------------------------------------+ Harris Cyclery, West Newton, Massachusetts Phone 617-244-9772 FAX 617-244-1041 http://harriscyclery.com Hard-to-find parts shipped Worldwide http://captainbike.com http://sheldonbrown.com |
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