? Ik heb er een (bescheiden) eerste 1000 km opzitten met veloflex én carbon clinchers , geen enkele vorm van extreme slijtage te zien...
Colnago
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fpeverelli
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- Lid geworden op: 08 mei 2006 10:43
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Lcsmet
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Lcsmet
09 mei 2019 14:10
Ik heb met Veloflex Corsa's 1000-en km gereden op FFWD F6r FCC wielen.
Geen enkel probleem gehad.
Het gaat er hem om dat de rand van full carbon velgen heel scherp kan zijn, en zo de zijkant van je band kan doorslijten, daar moet je dus bij aankoop van je wielen even op letten.
Veloflex banden, althans de Corsa, vallen in verhouding tot andere merken met eenzelfde noemformaat redelijk smal.
I know myself like no one else
Nothing to defend
Nothing to defend
Ja, dat staat, nogal verstopt, op de verpakkking van Veloflex. Is nmm ingegeven doordat veel full carbon wielen slecht zijn afgewerkt en scherpe randen hebben. Katoenen (meestal 320tpi) banden ("open tubolari"), zoals Veloflex, Vittoria Corsa, Challenge (maar ook Specialized cotton 320 tpi, maar die wordt door Vittoria gemaakt) zouden daar niet tegen kunnen, gevulcaniseerde banden wel. Maar op mijn Zipp Firecrests heb ik zowel Veloflex Corsa als Vittoria Corsa zonder probleem gebruikt. Maar het velgbed van de Firecrest is wel heel netjes afgewerkt.
Enve kwam met het advies geen Vittoria Corsa vouwbanden op Enve full carbon wielen te gebruiken. Maar daarop is door (ik dacht:) Challenge al fiks tegengas gegeven.
Enve kwam met het advies geen Vittoria Corsa vouwbanden op Enve full carbon wielen te gebruiken. Maar daarop is door (ik dacht:) Challenge al fiks tegengas gegeven.
Ziehier:
SALEM, Mass. (BRAIN) — Two road tire makers have responded to a safety warning that Enve issued last week about the use of some clinchers on its carbon wheels.
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Enve told dealers and registered purchasers of its carbon wheels to avoid certain tires from Vittoria and Challenge. It said it had studied the issue and found that tire models with natural fiber casings and an "open tubular" construction are susceptible to sidewall wear leading to sudden blowouts. In other cases, Enve said, the tires can stretch with use, causing them to come off the rim.
Enve specifically warned against use of the Vittoria Corsa Non-Tubeless tire model, and all Open Tubular Non-Vulcanized Tire models from Challenge. It also said the Specialized S Works 2Bliss 28mm is not compatible with Enve's hookless rims, including Enve's G23 and SES 4.5 AR rims.
Other than the Specialized tire's incompatibility with the hookless rims, Enve's warning applied to all its carbon rims, not specific models. It also indicated that other wheel makers are seeing similar problems with the tires.
"It is important to note that through this study, we reached out to many dealers as well as other wheel manufacturers to see if their consumers are having the same results as ours. The response was an unequivocal confirmation that these tires were fatiguing prematurely and in some cases resulting in crashes and injury to the rider when the tire sidewall failed or the tire came off the rim without warning," Enve said.
Vittoria and Challenge each issued statements about the Enve warning.
Challenge's response could be summed up as "it's not our tires, it's their rim." In particular, Challenge said that Enve's SES model rims have a sharp hook that can cut sidewalls. It said its investigation found the problem can occur with a variety of tires, not just its models.
"Enve's SES have two sharp (<0.2mm) radii in their hooks, that leave two parallel cuts about 0.5mm apart, around the entire radius of our (and other company's) tires, at around 3-4mm above the bead," Challenge said.
Challenge said that because of the hook radius, the SES rim model does not comply with current international standards and said it has notified Enve of the situation. The company is warning consumers to not use Challenge tires on any rims that do not comply with the "2019 ETRTO, past ETRTO or soon to be released ISO 5775 global standards for tire and wheel fit."
On its website, Enve said all its rims comply with ETRTO standards, with the exception of its M Series M60 Plus and SES 4.5 AR Disc rims. The website doesn't say exactly how or why those models don't comply with the standard.
Enve's Jake Pantone told BRAIN on Friday that he couldn't comment on the situation. "We can't comment at this time, but we'll be in touch soon," Pantone said in an email.
Vittoria released a statement this week saying that it has requested specific findings from Enve's investigation. The company noted that it has sold millions of the Open Corsa tires since they were introduced in 1996. "The tire has been run and raced on both steel, aluminum, and carbon fiber wheelsets, including our own, throughout the world with no previously reported consistent failures," the company said.
Vittoria also suggested that riders inspect their wheels for any sharp edges that could cause premature tire wear.
"It makes intuitive sense that any wheels manufactured with sharper than average edges at the bead where that wheel's rim makes contact with our tires may very well see faster deterioration of the tire's sidewall at that point of contact. Such excessively sharp edges can result from design thus affecting an entire model of wheel, from anomalies in the manufacturing process thus affecting a number of wheels manufactured during a production run, or from a failure to observe a manufacturing defect or damage to a single rim.
"We generally see such issues residing with the wheel manufacturer, rather than with our tires. We also believe that to the extent such issues exist, they often pose similar risks regardless of the brand of performance tire used," the company said.
SALEM, Mass. (BRAIN) — Two road tire makers have responded to a safety warning that Enve issued last week about the use of some clinchers on its carbon wheels.
Advertisement
Enve told dealers and registered purchasers of its carbon wheels to avoid certain tires from Vittoria and Challenge. It said it had studied the issue and found that tire models with natural fiber casings and an "open tubular" construction are susceptible to sidewall wear leading to sudden blowouts. In other cases, Enve said, the tires can stretch with use, causing them to come off the rim.
Enve specifically warned against use of the Vittoria Corsa Non-Tubeless tire model, and all Open Tubular Non-Vulcanized Tire models from Challenge. It also said the Specialized S Works 2Bliss 28mm is not compatible with Enve's hookless rims, including Enve's G23 and SES 4.5 AR rims.
Other than the Specialized tire's incompatibility with the hookless rims, Enve's warning applied to all its carbon rims, not specific models. It also indicated that other wheel makers are seeing similar problems with the tires.
"It is important to note that through this study, we reached out to many dealers as well as other wheel manufacturers to see if their consumers are having the same results as ours. The response was an unequivocal confirmation that these tires were fatiguing prematurely and in some cases resulting in crashes and injury to the rider when the tire sidewall failed or the tire came off the rim without warning," Enve said.
Vittoria and Challenge each issued statements about the Enve warning.
Challenge's response could be summed up as "it's not our tires, it's their rim." In particular, Challenge said that Enve's SES model rims have a sharp hook that can cut sidewalls. It said its investigation found the problem can occur with a variety of tires, not just its models.
"Enve's SES have two sharp (<0.2mm) radii in their hooks, that leave two parallel cuts about 0.5mm apart, around the entire radius of our (and other company's) tires, at around 3-4mm above the bead," Challenge said.
Challenge said that because of the hook radius, the SES rim model does not comply with current international standards and said it has notified Enve of the situation. The company is warning consumers to not use Challenge tires on any rims that do not comply with the "2019 ETRTO, past ETRTO or soon to be released ISO 5775 global standards for tire and wheel fit."
On its website, Enve said all its rims comply with ETRTO standards, with the exception of its M Series M60 Plus and SES 4.5 AR Disc rims. The website doesn't say exactly how or why those models don't comply with the standard.
Enve's Jake Pantone told BRAIN on Friday that he couldn't comment on the situation. "We can't comment at this time, but we'll be in touch soon," Pantone said in an email.
Vittoria released a statement this week saying that it has requested specific findings from Enve's investigation. The company noted that it has sold millions of the Open Corsa tires since they were introduced in 1996. "The tire has been run and raced on both steel, aluminum, and carbon fiber wheelsets, including our own, throughout the world with no previously reported consistent failures," the company said.
Vittoria also suggested that riders inspect their wheels for any sharp edges that could cause premature tire wear.
"It makes intuitive sense that any wheels manufactured with sharper than average edges at the bead where that wheel's rim makes contact with our tires may very well see faster deterioration of the tire's sidewall at that point of contact. Such excessively sharp edges can result from design thus affecting an entire model of wheel, from anomalies in the manufacturing process thus affecting a number of wheels manufactured during a production run, or from a failure to observe a manufacturing defect or damage to a single rim.
"We generally see such issues residing with the wheel manufacturer, rather than with our tires. We also believe that to the extent such issues exist, they often pose similar risks regardless of the brand of performance tire used," the company said.
Veloflex's core business is tubular. Hun website zegt het zo : 'masterpiece of our production'.
Clinchers, of zoals zij zeggen open tubulars, zijn extra.
En vermits het op sommige minder netjes afgewerkte carbon wielen zeker tot schade kan lijden hebben ze gekozen voor de gemakkelijkste weg en raden ze montage af.
Liability wise zeker de beste keuze.
Ik fiets zelf al enkele jaren met Veloflex op carbon velgen. Het is een fantastische band. Zelden of nooit lek. Rijden super en zijn nog licht ook. What's not to like ?
Maar mijn carbon velgen zijn breed, deze nieuwe zijn 21mm intern, mijn andere 19mm intern. De band zit daardoor niet bol tussen de opstaande randjes. Een 25mm zit eerder open getrokken op zulke brede wielen. Volgens mij worden de sidewalls daardoor veel minder belast.
En bovendien voelen die randjes niet scherp aan.
Na vele 1000en kms met Veloflex en carbon ben ik er nog steeds helemaal gerust in
MarcFaFo
09 mei 2019 17:48
Klopt, de ENVE hebben een scherpe ronding in hun velgrand ipv van de normale 7mm.
Zie bron: https://www.bicycleretailer.com/product ... NRLjabgp25
Vittoria and Challenge each issued statements about the Enve warning.
Challenge's response could be summed up as "it's not our tires, it's their rim." In particular, Challenge said that Enve's SES model rims have a sharp hook that can cut sidewalls. It said its investigation found the problem can occur with a variety of tires, not just its models.
"Enve's SES have two sharp (<0.2mm) radii in their hooks, that leave two parallel cuts about 0.5mm apart, around the entire radius of our (and other company's) tires, at around 3-4mm above the bead," Challenge said.
Afzien is de kunst om je protesterende organen in slaap te wiegen... onamihs stal die van P.Winnen.
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redbulleke
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- Lid geworden op: 14 dec 2008 10:47
Hallo,
Even een vraagje over colnago c60 bracket,ik heb een vervelend kraakje in het bracket(heb voor de rest alles al uitgezocht,lagers zijn ook al vervangen).Nu zou ik de Campagnolo press fit cups willen vervangen en de colnago cups is willen nazien en eventueel ook vervangen.
De cups zijn echter vastgelijmd met Loctite door de fm,gaat dit problemen geven?
Waar zou ik deze cups en het speciale colnago tooltje best kunnen bestellen?
Waarmee drijf je de campa cups er het beste mee uit?
Bedankt voor eventuele reacties!
Even een vraagje over colnago c60 bracket,ik heb een vervelend kraakje in het bracket(heb voor de rest alles al uitgezocht,lagers zijn ook al vervangen).Nu zou ik de Campagnolo press fit cups willen vervangen en de colnago cups is willen nazien en eventueel ook vervangen.
De cups zijn echter vastgelijmd met Loctite door de fm,gaat dit problemen geven?
Waar zou ik deze cups en het speciale colnago tooltje best kunnen bestellen?
Waarmee drijf je de campa cups er het beste mee uit?
Bedankt voor eventuele reacties!
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daniel1975
- Forum-lid HC
- Berichten: 40144
- Lid geworden op: 11 nov 2004 14:14
daniel1975
10 mei 2019 19:25
Press fit campa-cups met locktite?
Die man is niet wijs imho.
Cups tik je eruit met een cup-remover.
De colnago cups zou ik laten zitten of door een goede FM laten doen.
Die man is niet wijs imho.
Cups tik je eruit met een cup-remover.
De colnago cups zou ik laten zitten of door een goede FM laten doen.
Less is bore
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anniversary
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- Lid geworden op: 28 nov 2006 15:09
normaal wordt de colnago cupsleutel meegeleverd als je een nieuw C60 frame kocht, er bestaan nu colnago cups met ceramic speed lagers deze zijn wel duur.
Ik had ook een kraakje en heb de colnago cups verwijderd kopervet aangedaan en terug gemonteerd ,het kraakje was verdwenen.
https://www.merlincycles.com/colnago-c6 ... 34818.html
Ik had ook een kraakje en heb de colnago cups verwijderd kopervet aangedaan en terug gemonteerd ,het kraakje was verdwenen.
https://www.merlincycles.com/colnago-c6 ... 34818.html
Groetjes
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anniversary
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- Lid geworden op: 28 nov 2006 15:09
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redbulleke
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Bedankt voor de antwoorden,kan het tooltje bestellen bij merlin,maar ik twijfel of ik de cups er uit ga krijgen door die locite.
Zou ze liever zelf monteren met een beetje morgan blue pasta,ben niet voor monteren met Loctite.Heb naar fm gebeld,hij kan dit pas doen rond 25 mei (heeft het te druk),maar heb net dat weekend tripje naar Vogezen gepland.Als hij ze terug monteert zit ik weer met die Loctite toestand.
Bergop rijden met dat gekraak zie ik echter niet zitten,zal mijn andere fiets worden vrees ik.
Zou ze liever zelf monteren met een beetje morgan blue pasta,ben niet voor monteren met Loctite.Heb naar fm gebeld,hij kan dit pas doen rond 25 mei (heeft het te druk),maar heb net dat weekend tripje naar Vogezen gepland.Als hij ze terug monteert zit ik weer met die Loctite toestand.
Bergop rijden met dat gekraak zie ik echter niet zitten,zal mijn andere fiets worden vrees ik.