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alloy road bar fatigue life...carbon replacement?
i'm still running the original 7075 AL modolo xtenos bars on my scapin
el-os...never crashed, maybe 5k miles on 'em, but ~13yrs old. should i be worried? i recently put a carbon fork on it (ouzo pro) and am very impressed with the change in ride quality, so i've been watching carbon bar auctions on ebay. why do some easton bars call for 2-bolt stems only? i've got a removeable-face 4-bolt ritchey pro. can i use carbon bars? suggestions? thx, dookie |
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alloy road bar fatigue life...carbon replacement?
On Thu, 04 May 2006 16:50:04 +0000, dookie wrote:
i'm still running the original 7075 AL modolo xtenos bars on my scapin el-os...never crashed, maybe 5k miles on 'em, but ~13yrs old. should i be worried? 5000 miles? That's not much use. i recently put a carbon fork on it (ouzo pro) and am very impressed with the change in ride quality, so i've been watching carbon bar auctions on ebay. why do some easton bars call for 2-bolt stems only? i've got a removeable-face 4-bolt ritchey pro. can i use carbon bars? suggestions? I _think_ they just want to avoid people using 1-bolt (quill) stems with carbon bars. Such stems would scratch the bars during installation, which would weaken carbon fiber bars significantly. -- David L. Johnson __o | Some people used to claim that, if enough monkeys sat in front _`\(,_ | of enough typewriters and typed long enough, eventually one of (_)/ (_) | them would reproduce the collected works of Shakespeare. The internet has proven this not to be the case. |
#3
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alloy road bar fatigue life...carbon replacement?
On Thu, 04 May 2006 15:59:27 -0400, "David L. Johnson"
wrote: On Thu, 04 May 2006 16:50:04 +0000, dookie wrote: i'm still running the original 7075 AL modolo xtenos bars on my scapin el-os...never crashed, maybe 5k miles on 'em, but ~13yrs old. should i be worried? 5000 miles? That's not much use. i recently put a carbon fork on it (ouzo pro) and am very impressed with the change in ride quality, so i've been watching carbon bar auctions on ebay. why do some easton bars call for 2-bolt stems only? i've got a removeable-face 4-bolt ritchey pro. can i use carbon bars? suggestions? I _think_ they just want to avoid people using 1-bolt (quill) stems with carbon bars. Such stems would scratch the bars during installation, which would weaken carbon fiber bars significantly. There's some belief by Easton that four-bolt faceplates create more stress on the bars than two-bolts. There was info on their website or at velonews.com about this. Not sure I believe it. But I don't have carbon bars, so it's perhaps moot for me. JT **************************** Remove "remove" to reply Visit http://www.jt10000.com **************************** |
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alloy road bar fatigue life...carbon replacement?
5000 miles? That's not much use.
i know... but 13 years? which matters? i'd like to keep the xtenos and spend $0, but i thought i'd get some groupthink. your ascii art is hott! word, kjt i recently put a carbon fork on it (ouzo pro) and am very impressed with the change in ride quality, so i've been watching carbon bar auctions on ebay. why do some easton bars call for 2-bolt stems only? i've got a removeable-face 4-bolt ritchey pro. can i use carbon bars? suggestions? I _think_ they just want to avoid people using 1-bolt (quill) stems with carbon bars. Such stems would scratch the bars during installation, which would weaken carbon fiber bars significantly. -- David L. Johnson __o | Some people used to claim that, if enough monkeys sat in front _`\(,_ | of enough typewriters and typed long enough, eventually one of (_)/ (_) | them would reproduce the collected works of Shakespeare. The internet has proven this not to be the case. |
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alloy road bar fatigue life...carbon replacement?
On Fri, 05 May 2006 03:41:01 +0000, dookie wrote:
5000 miles? That's not much use. i know... but 13 years? which matters? I'd say it's the use. Maybe a metallurgist will contradict me. Usually the problem with aluminum bars is metal fatigue, which is a function of use. -- David L. Johnson __o | Do not worry about your difficulties in mathematics, I can _`\(,_ | assure you that mine are all greater. -- A. Einstein (_)/ (_) | |
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alloy road bar fatigue life...carbon replacement?
"dookie" wrote:
5000 miles? That's not much use. i know... but 13 years? which matters? They will last many thousands of years hanging in your garage unridden... unless they are damaged and show serious amounts of aluminum oxide ("aluminum rust"), I wouldn't worry about the years. i'd like to keep the xtenos and spend $0, but i thought i'd get some groupthink. your ascii art is hott! If I replaced the bars on my road bikes every 5000 miles, I'd be getting rich from recycling the old ones. ;-) Mark Hickey Habanero Cycles http://www.habcycles.com Home of the $795 ti frame word, kjt i recently put a carbon fork on it (ouzo pro) and am very impressed with the change in ride quality, so i've been watching carbon bar auctions on ebay. why do some easton bars call for 2-bolt stems only? i've got a removeable-face 4-bolt ritchey pro. can i use carbon bars? suggestions? I _think_ they just want to avoid people using 1-bolt (quill) stems with carbon bars. Such stems would scratch the bars during installation, which would weaken carbon fiber bars significantly. -- David L. Johnson __o | Some people used to claim that, if enough monkeys sat in front _`\(,_ | of enough typewriters and typed long enough, eventually one of (_)/ (_) | them would reproduce the collected works of Shakespeare. The internet has proven this not to be the case. |
#7
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alloy road bar fatigue life...carbon replacement?
John Forrest Tomlinson wrote:
There's some belief by Easton that four-bolt faceplates create more stress on the bars than two-bolts. There was info on their website or at velonews.com about this. Not sure I believe it. It's not just Easton. With a four-bolt faceplate it is at least _possible_ to stress the handlebar unevenly if you don't tighten the screws carefully to the same torque. With a two-bolt faceplate there is no such problem. -as |
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alloy road bar fatigue life...carbon replacement?
dookie wrote: i'm still running the original 7075 AL modolo xtenos bars on my scapin el-os...never crashed, maybe 5k miles on 'em, but ~13yrs old. should i be worried? Nope- i recently put a carbon fork on it (ouzo pro) and am very impressed with the change in ride quality, so i've been watching carbon bar auctions on ebay. why do some easton bars call for 2-bolt stems only? i've got a removeable-face 4-bolt ritchey pro. can i use carbon bars? suggestions? Cuz Easton wants you to buy a Easton stem.....use the Ritchey, they have worked well for carbon bars for years....BUT don't expect magic from a carbon hbar and I would be leary of buying a used carbon anything.... thx, dookie |
#9
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alloy road bar fatigue life...carbon replacement?
i recently put a carbon fork on it (ouzo pro) and am very impressed with
the change in ride quality, so i've been watching carbon bar auctions on ebay. why do some easton bars call for 2-bolt stems only? i've got a removeable-face 4-bolt ritchey pro. can i use carbon bars? suggestions? Cuz Easton wants you to buy a Easton stem.....use the Ritchey, they have worked well for carbon bars for years....BUT don't expect magic from a carbon hbar and I would be leary of buying a used carbon anything.... I'd also recommend buying from a "deep pockets" source. Sometimes bad things happen, and being able to track backward through legit resellers & distributors makes it a whole lot easier to make a claim in the event something fails when it shouldn't have. For what it's worth, we've become extremely careful about the companies we deal with as a retailer. Our own insurance would only go so far; safer for us to have someone standing behind us who will sign off on the situation and take it from there. --Mike-- Chain Reaction Bicycles www.ChainReactionBicycles.com "Qui si parla Campagnolo" wrote in message ups.com... dookie wrote: i'm still running the original 7075 AL modolo xtenos bars on my scapin el-os...never crashed, maybe 5k miles on 'em, but ~13yrs old. should i be worried? Nope- i recently put a carbon fork on it (ouzo pro) and am very impressed with the change in ride quality, so i've been watching carbon bar auctions on ebay. why do some easton bars call for 2-bolt stems only? i've got a removeable-face 4-bolt ritchey pro. can i use carbon bars? suggestions? Cuz Easton wants you to buy a Easton stem.....use the Ritchey, they have worked well for carbon bars for years....BUT don't expect magic from a carbon hbar and I would be leary of buying a used carbon anything.... thx, dookie |
#10
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alloy road bar fatigue life...carbon replacement?
On Sat, 06 May 2006 04:29:00 +0000, Mike Jacoubowsky wrote:
I'd also recommend buying from a "deep pockets" source. Sometimes bad things happen, and being able to track backward through legit resellers & distributors makes it a whole lot easier to make a claim in the event something fails when it shouldn't have. For what it's worth, we've become extremely careful about the companies we deal with as a retailer. Our own insurance would only go so far; safer for us to have someone standing behind us who will sign off on the situation and take it from there. I agree. Besides this kind of documentation and support, big companies are more likely to have real engineers in their employ, overseeing design, manufacture, and quality control. A lot of bike stuff is of dubious origin, IMO. Matt O. |
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