Jump to content

Carbon-fiber


philth

Recommended Posts

Ok, I was just going to ask about for but figure i'd ask about other stuff.

1) Carbon-Fiber forks?? What ones are people using and what problems have people had.

2) Other stuff, what other bits on your bike are carbon-fibre, big bits not just stem caps.

Forks are my main interest.

Tar lovely's

Phil

Edited by philth
Link to comment
Share on other sites

I don't think anyone really bothers with CF forks. There were some people making them a while back (Goldtech/Coust/Fournales) but they were stupidly expensive (I heard £500 mentioned <_< ). Those Pace Carbon forks from years back were ok, I think Waynio was using them. Flexy as anything though...

Link to comment
Share on other sites

I don't think anyone really bothers with CF forks. There were some people making them a while back (Goldtech/Coust/Fournales) but they were stupidly expensive (I heard £500 mentioned <_< ). Those Pace Carbon forks from years back were ok, I think Waynio was using them. Flexy as anything though...

Ok...but prices here in the states are ALOT cheaper + I work in a bike shop, for example i can get Chris king headsets for 70dollars, like 40 pounds

Edited by philth
Link to comment
Share on other sites

Don't rub it in! Can you get any carbon forks though? The Fournales/Coust ones are specialist items that I wouldn't have thought will be available for bike shops to order in, especially not state-side. You got anything in mind?

Link to comment
Share on other sites

Ok...but prices here in the states are ALOT cheaper + I work in a bike shop, for example i can get Chris king headsets for 70dollars, like 40 pounds

you wont get them forks cheaper though. they will only make them for you, not a stock item. danny b on here has them. carbon bars are great, my onza ones rock. well stiff <_<

Link to comment
Share on other sites

you wont get them forks cheaper though. they will only make them for you, not a stock item. danny b on here has them. carbon bars are great, my onza ones rock. well stiff <_<

You wont be saying that when you notice the crack on the bend. I've seen 3 sets of 30'' bars crack, and heard alot more. The pazzaz uns are alot stronger and stiffer :)

Link to comment
Share on other sites

I think the main problems with CF forks are the interfaces between the legs and the crown, and the legs and the dropouts. I overheard Dave Butler saying that he had to re-bond Danny's forks a while back as the glue had died. Also due to the flex CF allows, there is a massive stress riser where the CF meets with the alu or magnesium crowns increasing the chance of crack propogation and delamination. Crack propogation isnt too bad a problem in CF as it can develop minute cracks without any real degredation in mechanical properties, it is delamination that causes problems, that is where the layers peel away from each other due to poor bonding or high stresses/bending which the plastic adhesive can't handle and so it cracks/shatter between the CF laminates.

With a redisign of the crown area a CF fork could be made to be as durable and good as a regular alu fork, but obviously with less weight.

Link to comment
Share on other sites

They're the same thing :angry: Onza just rebranded them.

The Pazzaz bars have thicker Carbon Fibre, and thicker pieces of Aluminium inserts.

If you look down the side of Pazzaz and Onza CF bars, then you can definately see the difference.

Link to comment
Share on other sites

woohoo, i have pazzaz 29" hopefully safer than the onza ones :ermm:

Im sure your bars are 28''. Because they're the same as mine, and i dont think they produced 29'' version.

Didnt a kid from Halifax produce some carbon firbre forks, with RockShock steerer and drop-outs? Wonder how those went :angry:

Link to comment
Share on other sites

I think the main problems with CF forks are the interfaces between the legs and the crown, and the legs and the dropouts. I overheard Dave Butler saying that he had to re-bond Danny's forks a while back as the glue had died. Also due to the flex CF allows, there is a massive stress riser where the CF meets with the alu or magnesium crowns increasing the chance of crack propogation and delamination. Crack propogation isnt too bad a problem in CF as it can develop minute cracks without any real degredation in mechanical properties, it is delamination that causes problems, that is where the layers peel away from each other due to poor bonding or high stresses/bending which the plastic adhesive can't handle and so it cracks/shatter between the CF laminates.

With a redisign of the crown area a CF fork could be made to be as durable and good as a regular alu fork, but obviously with less weight.

according to dave butler the carbon forks are not that much lighter, but far stronger, seems weird but thats what he said

Link to comment
Share on other sites

Didnt a kid from Halifax produce some carbon firbre forks, with RockShock steerer and drop-outs? Wonder how those went :angry:

yes i did :P they didn't last right long (not after ali c went on my bike anyway) lol, the carbon fibre wasn't of high enough quality and the only place i could find that did any strong enough had a minimum order quantity of £250 :ermm: wouldn't mind having another go with better tube though

sam

EDIT: heres a pic

pbpic363578.jpg

Edited by wad
Link to comment
Share on other sites

yes i did :P they didn't last right long (not after ali c went on my bike anyway) lol, the carbon fibre wasn't of high enough quality and the only place i could find that did any strong enough had a minimum order quantity of £250 :ermm: wouldn't mind having another go with better tube though

sam

Ah cool :angry:

Good for trying though man, top notch!

Would you be able to get the same stuff, but just put aluminium inserts into the legs, so they were stiffer?

Edited by dan_t-lite
Link to comment
Share on other sites

Would you be able to get the same stuff, but just put aluminium inserts into the legs, so they were stiffer?

yer Ali C did that an gave/sold them to fat mike the tubing held together but the disc mount came off :angry: i think ali is in the process of makin another pair , he was goin to let me use them but they have post mounts so i would need a new brake

Link to comment
Share on other sites

pace have tweaked the design of the RC31 and will have titanium buits on them for next year to stiffen and strangthen the corwn me thinks as the alloy crown is VERY very flexy. im going to start using mine again soon. afgter i had the dropout fixed. cos the magnesium just doesnt last. going to have to use front vee aswell just for extra safety :P lol as your not meant to use a disc over 160mm or you find out what happens to me :) lol the disc mount snaps off the dropout YEAH!!!! mint or what.

but ye Philth if you want to see some if you fancy a ride in barlik or colne ne time soon get in touch with me via PM and il send you ma number and we'll hook up for a ride if you fancy?

Waynio....................

Link to comment
Share on other sites

fork ye he is. neva mind i will see him next year if i go to florida :P lol

im just not all with it at mo :D am going insane. and we will leave it at that.

Waynio....................

altho if he wished to have carbon forks the new pace stuff is probably going to be strong enuff :P :)

Link to comment
Share on other sites

carbon is cool, :P and pretty :P hahaha no seriously carbon is a great material and lends it self well to trials its pretty light and pretty strong, i run carbon bars and obviously my very trendy forks but the only problem with the forks is after all the glue which can be a bit of a pain and yes the forks could be made but would need pre paided orders and lots of them to make the forks at a descent selling price else the prices of them would just be huge. :turned: :D even though they are absolutly amazing to ride with but like it said further up they ain't that much lighter than standards but they give so much more of a better reaction for taps and hooks. hope that helps a few peeps out. Personally in the future i would love to see a carbon frame that would be a real good product. (Y)

Link to comment
Share on other sites

Personally in the future i would love to see a carbon frame that would be a real good product.

me too, but the problem would be too many people would mangle the down tube and say sumot stupid like i was just riding along and my down tube caved in. haha. would be funny to see one splintered wouldnt it :P haha could be painful and would be pretty messy if one broke.

would be nice to actually see one stood on two wheels and like the pimpest build ever BUT not be allowed to be ridden! :P :P :P that would be sweet.

and back to carbon forks i rekon there would be a market for them if people werent so short sightd a bit like with frames and stuff and breaking them, you just cant educate beef. so its hard to explain but to someone like me or you dan who wouldnt really be bothered if we broke them its not a problem but to lil timmy who saved up for months on end to have a pair he could/would possibly go out and trash them within minutes and then wouldnt be a happy camper.

Waynio......................

i can remember when i first got a pair of pace forks people were like "god your mad why would you run carbon forks, they'll well snap on the carbon" when in all truth its actually the parts around the carbon that would break as carbon in its form is extremly strong,it would break if there was quite a large gash in the side of it for example, but i have only had problems with the dropouts on my pace ones, but as pace say there a XC fork and if they could release a trials fork made from carbon they would be produced with alloy dropouts but i dont think they would go down the road of a carbon more trials orientated fork. i just had mine done as i wanted something no one else would have.

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Loading...
  • Recently Browsing   0 members

    • No registered users viewing this page.
×
×
  • Create New...