carbon bars + ODI lock-ons....bad idea?
- Thread starter -dustin
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be careful. as long as you arent a gorilla with a wrench you should be fine.
don't do it....
do not Do it....
install a normal set of grip with glue or even better safety wire if require, but don't put any kind of surfase tension that you don't need on a carbon bar..
well it you are going to do it round out all the edges of the lock-ons so is no sharpness anywere that can damage the surfase (this is not for looks Only for structural reasons..)
do not Do it....
install a normal set of grip with glue or even better safety wire if require, but don't put any kind of surfase tension that you don't need on a carbon bar..
well it you are going to do it round out all the edges of the lock-ons so is no sharpness anywere that can damage the surfase (this is not for looks Only for structural reasons..)
Is it a bad idea? Yes.
Did I do for a year or so on an Easton carbon XC bar with no problems? Also yes.
Did I do for a year or so on an Easton carbon XC bar with no problems? Also yes.
I have done it on all my bikes. No problems for the last two years, I race gravity events and ride pretty aggressive.
Didn't we cover this in the Mechanics Q & A forum? http://ridemonkey.com/forums/showthread.php?t=149604 
My question to Patenito is the same that Wumpus asked in the other thread... Why not? We clamp down shifters and brake levers? What's the difference?
My question to Patenito is the same that Wumpus asked in the other thread... Why not? We clamp down shifters and brake levers? What's the difference?
I've been doing it for years, on a number of different bikes (trail and DH) without a single problem.patineto said:
Carbon is much stronger than many people give it credit for...
I also have been using carbon windsurfing masts for years with booms that clamp and compress the mast.
The topic does bring many Chicken Little warnings to the forefront however.
well I made Airplanes out of Composites for a few years and i see stuff happend that will make you stay away from this "wondermaterial" forever...justsomeguy said:
beside Windsurf mass are design to take the pounding,, well somehow I have about five or six of those broken tubes i use for racks..
I'm just saying, don't do it if you don't need besides safety wire and thick grips are so much nicer than the skinny cushion on the lock on grips....
god damn. my search skills suck.Ciaran said:Didn't we cover this in the Mechanics Q & A forum? http://ridemonkey.com/forums/showthread.php?t=149604
My question to Patenito is the same that Wumpus asked in the other thread... Why not? We clamp down shifters and brake levers? What's the difference?
nevermind. i searched yesterday before that thread was posted. so :eviltongu
...and bicycle handlebars aren't?patineto said:
Heh heh.the Inbred said:
Patineto, can you expand a bit on why it's a bad idea? I understand that it will fail, but can you explain a bit about why it will fail? Something simple, please.
(By the way, I do appreciate that you take time to explain stuff like this.)well first of all if the bar is well design, they take into account that people are going to clamp the bars with a stem and also istall the brake perches(in a certain part of the handlebar) but they will also keep the bars lighter with also better dampening caracteristic by tapering the Grip part (Placing less layers of material) to a lesser wall thickness of the carbonCiaran said:Didn't we cover this in the Mechanics Q & A forum? http://ridemonkey.com/forums/showthread.php?t=149604
My question to Patenito is the same that Wumpus asked in the other thread... Why not? We clamp down shifters and brake levers? What's the difference?
Do i make sense..!?!?
basically you have two diameter transitions, the one that everybody can see from 31.8MM to 22MM (or 25.4) but is also a internal diameter that varies, that is control by the amount of carbon fibre wall thickness at each specific point of the bar and also the type of fabric selected for the specific aplication (put it this way,, when i was working with this stuff we have about 60 diferent references of carbon fibree fabrics,, yes some of them were just diferent densities but also someof them have better 3-D performance, compression dampen springness,,, well you get the idea it is Rocket Scince...
again if the bars are cheap carbon it does not mattter much since the manufacture uses less sofisticated construction methods with the same amount and kind of material at every stage of the bars, when the well made ones, have more material were they need it and less were they do not. (for example the grip area,, unless they are design for barend use) so they can take some of the pounding by micro bending..
exagerating a little Carbon fibre acts like a piece of glass when you scrive it (mark it with a Diamond cutter) and will tend to generate stress risser and soner or latter break away on that section, the best thing to do to prevent that is to have taper progresive edges on the clamps so the bar does not have a sharp cutting edge and is able to bend with out being restricted it by the clamp...
or maybe i'm just to hightech and the planes i was working were pushing the edge of the materials (Experimental Cannard planes and small race airplanes) were on bicycle parts the safety margins are some how higher and the technology not as cutting edge do to the price point issues..
I think I just did on the posting above.. i'm not really a expert with this stuff but I did work with a few Engeniers with PHD's in composite MaterialsCiaran said:Heh heh.
Patineto, can you expand a bit on why it's a bad idea? I understand that it will fail, but can you explain a bit about why it will fail? Something simple, please.
just remeneber the old Vitus, trek,,whatever bonded aluminum carbon frames , well most of those actually have the plug (lug) on the inside of the carbon tubes as opose to a external wrap around but the few that did generate fatigue breakoff do to the aluminum flexing (or not flexing) at a diferent rate than the carbon,, todays frames like the Calfees, Kestrels and OCLV are very reliable since the whole frame flexes at bends at unison generating a lot less tension on each particular segment..
to prove my point I have a kindergarden Fisics question for you guys.. (maybe i need to make a pole about this)
what do you think is a STRONGER a sequoia tree or a palm tree...!?!?!
in fact I just did ,,lets see what happends, here is the link to the poll
One of my teammates rode all last season with a set of ODI Rogues on a FSA carbon bar.
ditto. my k-force carbons lasted 3 weeks trailriding/light FR before cracks started to form. back to aluminum i goKanter said:
yeah but thats also because the bars look like toothpicks compared to you.norco-freerider said:ditto. my k-force carbons lasted 3 weeks trailriding/light FR before cracks started to form. back to aluminum i go
Yep, I raced a whole season on an FSA Carbon DH bar with lock on grips. And had that stupid light CF-1 bar on my trail bike 2 years with no problems all with lock on grips.McGRP01 said:
Thick grips are for suckers.
I have had ODI lockons on Easton carbon bars on 2 bikes for 3 years with no problems... They are XC bikes though. Wouldn't do it for DH.
This is a very broad generalization, but here goes....
Carbon and metal are very different. (with me so far?)
When applied correctly (ie: emphasizing their respective strong suits), both are excellent. But to swap one directly for the other.....well, I'm not sure that's a good idea. Handle bars were designed to be a tube, clamped by a stem. This is a great application for aluminium.
But to swap it out for carbon directly, may not be the best way to go. The employ carbon for the steering apparatus for a bicycle, you'd almost need a paradigm shift. Go away from a tube clamped in a stem, and have a hollow, integrated bar and stem together....in some sort of airplane wing shape, that tapered down to the grips....that could be a good application for carbon.
But the apples and oranges comparison (and implemetation) of carbon and metal, could be ill-advised.
Carbon and metal are very different. (with me so far?)
When applied correctly (ie: emphasizing their respective strong suits), both are excellent. But to swap one directly for the other.....well, I'm not sure that's a good idea. Handle bars were designed to be a tube, clamped by a stem. This is a great application for aluminium.
But to swap it out for carbon directly, may not be the best way to go. The employ carbon for the steering apparatus for a bicycle, you'd almost need a paradigm shift. Go away from a tube clamped in a stem, and have a hollow, integrated bar and stem together....in some sort of airplane wing shape, that tapered down to the grips....that could be a good application for carbon.
But the apples and oranges comparison (and implemetation) of carbon and metal, could be ill-advised.
Maybe some company will be able to figure out a way to manufacture carbon fiber handlebars for a mountain bike that are durable and light. That would be quite a feat.MMike said:
Imagine if they could do if for something as weird shaped as a road handlebar.
I bet I'll have a flying car first. Drats.
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Shouldn't you be replacing those before long???Echo said:
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Holy crap. You should at least be a ten thousandaire for showing those to dumbass.Joe Pozer said:
Interesting.MMike said:
i'll still side with Kanter's broad generalization that carbon should be avoided in FR and DH and take it further for any aggressive riding for anyone wieghing over 200lbs. (That's about equivalent to a 90 kilogram rider not including excessive body hair.)
Doesnt Easton have AL inserts where all clamps hold the bar?
im pretty sure they already do
I have been running carbon bars on everything for years now, it just depends on how brutal you are on bars. On my DH bike I have Answer protaper carbons and ODI lock ons, this set-up hasn't changed in over 2 years. Use your best judgement and you'll probably come out just fine.
I want some carbon bars real bad.....but man, those things are pricey.