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PostPosted: Fri May 04, 2012 3:57 pm 
Posh Mark
Posh Mark
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Joined: Wed Apr 18, 2007 2:49 pm
Posts: 5982
Location: As far from the city as you can be ....
That Santa Cruz video was interesting.

Its funny peoples (inc me) perceptions regarding carbon.

Even after seeing videos like that ad the Niner fork one I think I would still struggle to use a carbon bar.

No issue using a 125g scandium bar though.

Go figure.


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PostPosted: Fri May 04, 2012 4:01 pm 
King of the DuckBoard
King of the DuckBoard

Joined: Sun Jan 28, 2007 12:30 pm
Posts: 21466
I worry more about carbon seat post. My 90 gram post worries me


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PostPosted: Fri May 04, 2012 4:26 pm 
Gold Trader / Special
Gold Trader / Special
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Joined: Wed Aug 27, 2008 3:48 pm
Posts: 3169
Location: Leicestershire
tintin40 wrote:
I worry more about carbon seat post. My 90 gram post worries me


with good reason XD


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PostPosted: Sat May 05, 2012 6:35 am 
Retro Guru
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Joined: Thu May 29, 2008 11:11 pm
Posts: 1134
Location: Letchworth Garden City
Not really off road but I've been using a 56cm Bottechia full CF bar for 3 years on my Spesh globe pro.
I'm a 103 kg and being a roadie have the bars about 3-4 lower than the saddle so a lot of my upper body weight (all muscle btw :wink: ) is on there.
Bike is used as a commuter, heavy duty shopping bike as well as doing Alpine climbing/descending & audax riding so gets plenty of use.
They're attached via a 140mm ITM millenium stem (& always have been) for additonal info.
Despite my somewhat agressive road style at times & reasonable mass I've never had a creak out of them and never feel unsure in any situation.

If you could find another botty I'd say buy it & enjoy it


Last edited by tonyf39 on Sat May 05, 2012 11:53 am, edited 1 time in total.

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PostPosted: Sat May 05, 2012 10:52 am 
Old School Hero

Joined: Thu Aug 12, 2010 4:41 pm
Posts: 196
Location: Newcastle Upon Tyne
Great video, just shows how much effort if put into designing bikes with strength and lightness today!

Difference there is yes the carbon frame took a higher load to fully break it but in actual fact the carbon frame is broken at 800lbs where you can hear the carbon strands snapping, yes it didnt snap but the alloy one is just miss shapen and is still attached at 1400 lbs where its folded!

Yes its a massive step forward for carbon technology but if you crashed that on the trail and didnt hear the snapping noises because youre heads in the dirt you'd think it was ok to be riding until it actually does break on you. The alloy one would be bent and you could tell!!


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PostPosted: Sat May 05, 2012 11:05 am 
Old School Grand Master
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Joined: Tue Oct 04, 2011 4:15 pm
Posts: 3499
Location: Behind you with the duct tape pulled out.
I think the drop test was a fairer test tbh. The wind it up til it breaks is ok but when do you ever have an impact like that? They had to seriously take the pish to break it with the drop test. Have to say it has changed my opinion.


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PostPosted: Sat May 05, 2012 2:37 pm 
Gold Trader / rb Rider / Special
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Joined: Mon Aug 31, 2009 12:26 am
Posts: 16165
Location: Rurally close.
My old college lecturer tole me the problem with carbon is that it absorbs impacts and stores the energy.
Then releases it all at once.

I assume thats why lots of different weaves and mats are coming in to play?


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PostPosted: Sat May 05, 2012 10:43 pm 
Retro Guru
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Joined: Wed Apr 21, 2010 8:58 pm
Posts: 359
Location: Cardiff
I have carbon bars, stem, fork, seatpost and saddle, all superlight and super strong, BUT, you do have to pay for good design and that goes for Ti, steel and aluminium too.

Peeps have this fear about carbon, but how many 'top end' steel and aluminium parts have failed over the years.

I ride my bike at least once a week on the local bmx track and skatepark, and the only problem was a dropped chain.

TBH. I would be more concerned about the superlight steel frames, Ti seatposts, alloy bolts etc, and people that that over tighten their 'hex' bolts...


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PostPosted: Sun May 06, 2012 8:07 am 
Old School Grand Master
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Joined: Sat May 20, 2006 2:56 pm
Posts: 4776
Location: No brakes? Way to commit soldier.
DHB wrote:
...if you crashed that on the trail and didnt hear the snapping noises because youre heads in the dirt you'd think it was ok to be riding until it actually does break on you. The alloy one would be bent and you could tell!!


They've isolated the frame for the test in order to demonstrate its strength.

In reality, a crash hard enough to put even 800lb through the frame would probably total your forks. That should give most riders a clue that its time to go shopping for a new frame.


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PostPosted: Sun May 06, 2012 2:17 pm 
Old School Grand Master
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Joined: Wed Apr 12, 2006 12:33 pm
Posts: 11105
Location: The Home Of Mountain Biking, And All Great Things.
Been using them on two of my bikes for years, one set of Ritchey risers are pretty manked up, but nothing really deep. I wouldn't use them on a downhill orientated bike, but for light XC I have no real worries.

Other set are Thorn straight bars and they live on my road orientated bike, dog walking and shopping duties.

I wouldn't go touring for 20k with them though, there is always that niggling niggle in the back of the brain.


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