Cycling and bicycle discussion forums. 
   Click here to join our community Log in to access your Control Panel  


Go Back   > >

Mountain Biking Mountain biking is one of the fastest growing sports in the world. Check out this forum to discuss the latest tips, tricks, gear and equipment in the world of mountain biking.

User Tag List

Reply
 
Thread Tools Search this Thread
Old 10-24-04, 03:47 PM   #1
alanbikehouston
Senior Member
Thread Starter
 
Join Date: Oct 2004
Bikes:
Posts: 5,250
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Mountain Bikes & Carbon Frames

Many "Roadies" are convinced that the best frames for a road bike are carbon frames - they are "lighter" and "more expensive", which in the "Roadie" world, means "better".

And, "lighter" makes sense when riding a bike UP a mountain. But what about the folks who enjoy riding DOWN seriously fast hills and mountains at high speeds? Of those whose riding involves a high amount of riding DOWN trails at high speeds, how many of your are riding on carbon frames? How many of your are using carbon handlebars?

When you are getting ready to ride DOWN an intense trail that requires experienced and skilled riders, what percentage of the riders that you see on the trails are riding with a carbon frame or a carbon fork?

And, if you won the lottery, and "money was no object", and you were looking for a bike that go DOWN any trail, at any speed, would a carbon frame be your first choice? Would a carbon handlebar be your first choice?
alanbikehouston is offline   Reply With Quote
Old 10-24-04, 03:58 PM   #2
Maelstrom 
Wood Licker
 
Maelstrom's Avatar
 
Join Date: Apr 2002
Location: Whistler,BC
Bikes: Transition Dirtbag, Kona Roast 2002 and specialized BMX
Posts: 16,885
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I don't trust it...at all...but living here I see lots of bikes...soo

Carbon bike = .25%...there is one. The BCD. I only saw it cause I knew the rider (by fame and another forum). He is both a freerider and dhiller and djers...smallish guy but super smooth...
carbon parts = 5 - 10% .... seatposts and bars, thats being generous btw I just think there might be some I missed along the way. Oh and on freeriders...none...I don't know any serious freeriders who use carbon anything...(ecept helmets and maybe visors...)

If money was no object I still wouldn't buy carbon. Have seen and heard of too many seriously bad accidents caused by them. Most of the guys I know who tried it, loved it....absolutely loved it...till the carbon breakage occured. Sometimes user error (tight bolts) sometimes after a crash (gauge) sometimes no reason at all. But scary and common.
Maelstrom is offline   Reply With Quote
Old 10-24-04, 03:59 PM   #3
mtnbiker66
Old School Rad
 
mtnbiker66's Avatar
 
Join Date: Sep 2004
Location: The old Mountains
Bikes: Blur LT
Posts: 8,212
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I only know 1 person riding a carbon frame and he's strictly xc. It's an older trek. I don't know of anyone going big on cabon.
__________________
Like a circus monkey on a stolen Harley......
mtnbiker66 is offline   Reply With Quote
Old 10-24-04, 04:00 PM   #4
Iffacus
Senior Member
 
Iffacus's Avatar
 
Join Date: Aug 2004
Location: trying to find my way home on Cannock Chase
Bikes:
Posts: 213
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I ride a Giant Cadex CFM2 which frame is carbon Fibre tubes onto aluminium lugs.

I have had no problems with it, even when upgrading to suspension forks (the bike is a '92 model and was non-suspension geometry)

If money were no object I'd probably get a titanium frame
Iffacus is offline   Reply With Quote
Old 10-24-04, 04:01 PM   #5
Iffacus
Senior Member
 
Iffacus's Avatar
 
Join Date: Aug 2004
Location: trying to find my way home on Cannock Chase
Bikes:
Posts: 213
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Forgot to add I only ride XC
Iffacus is offline   Reply With Quote
Old 10-24-04, 04:07 PM   #6
SuBHuMaN12356
Senior Member
 
SuBHuMaN12356's Avatar
 
Join Date: Sep 2004
Location: Malvern, PA
Bikes: Cannondale Scalpel 900 in SoBe Green
Posts: 238
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I have Carbon Fiber Chain Stays on my bike (Cannondale Scalpel) But its an XC bike.. its realy nice but i wouldnt trust it on any big drops (bigger then 3-4 feet) i just dont trust something that flexes like my chain stays and doesnt snap that easily

They also make Carbon Fiber Cranks ( i forget who does... but if i find the link ill give it to ya) Carbon fiber is one hell of a way to save wieght... if your an XC rider then you should get as much carbon as possible on your bike (within reason)
SuBHuMaN12356 is offline   Reply With Quote
Old 10-24-04, 04:11 PM   #7
Maelstrom 
Wood Licker
 
Maelstrom's Avatar
 
Join Date: Apr 2002
Location: Whistler,BC
Bikes: Transition Dirtbag, Kona Roast 2002 and specialized BMX
Posts: 16,885
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by SuBHuMaN12356
I have Carbon Fiber Chain Stays on my bike (Cannondale Scalpel) But its an XC bike.. its realy nice but i wouldnt trust it on any big drops (bigger then 3-4 feet) i just dont trust something that flexes like my chain stays and doesnt snap that easily

They also make Carbon Fiber Cranks ( i forget who does... but if i find the link ill give it to ya) Carbon fiber is one hell of a way to save wieght... if your an XC rider then you should get as much carbon as possible on your bike (within reason)
FSA has carbon cranks
Maelstrom is offline   Reply With Quote
Old 10-24-04, 04:18 PM   #8
SuBHuMaN12356
Senior Member
 
SuBHuMaN12356's Avatar
 
Join Date: Sep 2004
Location: Malvern, PA
Bikes: Cannondale Scalpel 900 in SoBe Green
Posts: 238
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
link me up Mael
SuBHuMaN12356 is offline   Reply With Quote
Old 10-24-04, 04:19 PM   #9
LordOpie
Senior Member
 
LordOpie's Avatar
 
Join Date: Jun 2004
Location: Denver
Bikes: 2006 custom Walt Works roadie, 2003 Fuji Finest (road), 2002 Giant Iguana (mtb), 1986 BMW K75 (motor)
Posts: 3,698
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I wouldn't ever own anything carbon for my mtb... people here have snapped their carbon handlebars, one guy got nearly impaled. I'm sure those are exceptions to the rule, but I beat the crap out of my mtb.

I doubt I'll ever own a carbon roadie.

I'm thinking Ti for both styles next time I buy.
LordOpie is offline   Reply With Quote
Old 10-24-04, 04:21 PM   #10
Maelstrom 
Wood Licker
 
Maelstrom's Avatar
 
Join Date: Apr 2002
Location: Whistler,BC
Bikes: Transition Dirtbag, Kona Roast 2002 and specialized BMX
Posts: 16,885
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
http://www.fullspeedahead.com/fly.as...axid=52&pid=96
Maelstrom is offline   Reply With Quote
Old 10-25-04, 01:44 PM   #11
alanbikehouston
Senior Member
Thread Starter
 
Join Date: Oct 2004
Bikes:
Posts: 5,250
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Only ONE rider on the forum has ridden a Mountain Bike with the main frame made with carbon tubes? Just one? Surely, at least two people have tried their luck on a carbon framed mountain bike?
alanbikehouston is offline   Reply With Quote
Old 10-25-04, 01:51 PM   #12
Maelstrom 
Wood Licker
 
Maelstrom's Avatar
 
Join Date: Apr 2002
Location: Whistler,BC
Bikes: Transition Dirtbag, Kona Roast 2002 and specialized BMX
Posts: 16,885
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
There aren't many xc guys here anymore. I bet those guys would have used them. But general consensus in fr and dh is carbon=death or paralysis
Maelstrom is offline   Reply With Quote
Old 11-06-04, 05:15 PM   #13
Andrew on Gary
Junior Member
 
Join Date: Oct 2004
Location: Melbourne, Aust.
Bikes: Sugar 1
Posts: 10
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
My Sugar has Carbon Chainstays. I wonder if putting a brake booster will cause the stays to bend in a way not intended by the designers.

I would not trust a full Carbon frame. They dont like knocks, heat like inside cars, and will eventually fatigue. A bit like Aluminium except for the heat bit.

If money was no object - Ti baby, all the way
Andrew on Gary is offline   Reply With Quote
Old 11-06-04, 05:18 PM   #14
BurlySurly
Pedalphile
 
BurlySurly's Avatar
 
Join Date: Dec 2002
Location: Tennessee
Bikes: better ones than yours
Posts: 514
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I use carbon bars and seatpost on my XC bike. I dont see any reason not to use a carbon frame as long as youre just trail riding. Its just as safe, but if you're going to be doing big, high impact stuff, Id look elsewhere. Carbon is real nice though. I love the stuff. I want some carbon pants.
BurlySurly is offline   Reply With Quote
Old 11-06-04, 05:23 PM   #15
Cornish_Rdr_UK
Withdrawal Symptoms!
 
Cornish_Rdr_UK's Avatar
 
Join Date: Oct 2003
Location: Cornwall UK
Bikes: Specialized Hardrock Sport Disc 2004 And identit Dr Jekyll
Posts: 1,258
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Hmmm, this is strange, maybe its a different type of Carbon Fiber used, but on Formula one cars the whole chassis is made of Carbon fibre and its incredibly light and incredibly rigid.....

When the guy who designed the first Carbon chassis for a formula 1 car actually showed all the drivers and teams his design, they all thought he was off his rocker, apart from 2 teams or something like that who decided to try it....

Anyway, the cars were much faster, obviously, but when a car hit the wall, they all thought he'd be dead, but the carbon actually kept the guy alive in a 160mph head on crash into the wall with a carbon fibre chassis, and the shear vibrations from the cars when it hits speeds of 200mph when its flying down the straight is probably more violent than hitting a 4 ft drop on a carbon mtb frame, so why dont we trust it if its already a tried and tested technique in cars, seeing as we all know how versitile and strong it is....

Im the same, i dont trust Carbon, but i think its strange why i dont considering this little fact about the cars....

Nevermind eh?
Cornish_Rdr_UK is offline   Reply With Quote
Old 11-07-04, 04:42 PM   #16
Mtnbike247365
Senior Member
 
Join Date: Oct 2004
Bikes:
Posts: 72
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
The Trek fuel 70... I hear some guys do 5 foot drops with the thing and there are no issues, I hear it is aluminum but I have been told that it is carbon, I hear the frame is very strong and light, any recomendations If you wanted this bike, would you get it?
Mtnbike247365 is offline   Reply With Quote
Old 11-08-04, 01:01 AM   #17
a2psyklnut
NCAA - DUAL CHAMPIONS!
 
a2psyklnut's Avatar
 
Join Date: Mar 2000
Location: From Sarasota, FL sitting in front of a computer spewing random thoughts!
Bikes: Intense Uzzi SL, Masi Speciale, Trek 3700 Nashbar Single Speed, Old Cilo Road frame
Posts: 7,964
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
The problem with CF is that there is no warning when failure is emminent. It's usually explosive and catastrophic.

Plus, minor gouges are enough to damage the integrity of carbon.

I've ridden a lot of different bikes, road and mountain made of CF. Would never buy one.

With that said, I do use a set of Easton's Monkey Lites for my bike. I don't do a whole lotta jumping and the Easton's are stronger than most aluminum bars. I do think that it is to change them (a couple season's old) and will probably stick with aluminum upon replacing them.

I would stay far far away from a carbon seatpost.
__________________
"Life is not a journey to the grave with the intention of arriving safely in a pretty and well preserved body, but rather to skid in broadside, thoroughly used up, totally worn out, and loudly proclaiming, "WOW, What a Ride!" - unknown
"Your Bike Sucks" - Sky Yaeger
a2psyklnut is offline   Reply With Quote
Old 11-08-04, 04:27 PM   #18
Mtnbike247365
Senior Member
 
Join Date: Oct 2004
Bikes:
Posts: 72
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Is the trek fuel 70 carbon fiber? I'm confused about this bike If its carbon then Its a nono to buy but if its not then its a yes yes because I like it but I don't want my frame breaking. Didn't buy it yet, just another 30 days
Mtnbike247365 is offline   Reply With Quote
Old 11-08-04, 04:35 PM   #19
Maelstrom 
Wood Licker
 
Maelstrom's Avatar
 
Join Date: Apr 2002
Location: Whistler,BC
Bikes: Transition Dirtbag, Kona Roast 2002 and specialized BMX
Posts: 16,885
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I think it is just the linkage.
Maelstrom is offline   Reply With Quote
Old 11-08-04, 05:07 PM   #20
Grimlock
Frozen in carbonite
 
Grimlock's Avatar
 
Join Date: Oct 2004
Location: Ottawa
Bikes: '85 Full Cycle Cycle.
Posts: 805
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Formula One racecars aren't meant to be durable, they're meant to go really fast for a weekend. The frame of an F1 car is not made of CF, just the skin.
Just watching hockey sticks explode by the dozen (last year, of course) was enough to get me to stay away from CF parts for a few years to let them (scienticians, of course) figure out how to make it more durable.

Or, you know, until I develop x-ray vision and can spot any hairline stress fracture in a second.

Last edited by Grimlock; 11-08-04 at 05:08 PM. Reason: logic
Grimlock is offline   Reply With Quote
Old 11-09-04, 09:36 AM   #21
serious
Senior Member
 
Join Date: Nov 2004
Location: Canada
Bikes: Trek Fuel 98
Posts: 150
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Before you panic about CF, read THIS. It is a little outdated, but educational. At least you will know what are the benefits of various materials and how construction and intended application are key.

Obviously nobody in his/her right mind would use a CF frame for heavy duty riding (downhill, freeride, jumps, etc), but you cannot deny the benefits of CF for certain applications, such as XC riding. While catastrophic failure of CF is a possibility, I doubt that your average XC rider (130-170 lbs) has to be worried about it.
serious is offline   Reply With Quote
Old 11-09-04, 12:49 PM   #22
jermsoccer
Member
 
Join Date: Aug 2004
Bikes:
Posts: 31
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
trek fuel 70s are not carbon fiber... full aluminum... i have one and love it. not the lightest thing in the world, but it's not that bad, and I like the bike for the money.
jermsoccer is offline   Reply With Quote
Old 11-09-04, 02:53 PM   #23
r0cketrider
Junior Member
 
Join Date: Jun 2003
Location: Locust Grove, GA
Bikes:
Posts: 12
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by Maelstrom
There aren't many xc guys here anymore. I bet those guys would have used them. But general consensus in fr and dh is carbon=death or paralysis

Where did all the XC'ers go?
r0cketrider is offline   Reply With Quote
Old 11-09-04, 02:56 PM   #24
SuBHuMaN12356
Senior Member
 
SuBHuMaN12356's Avatar
 
Join Date: Sep 2004
Location: Malvern, PA
Bikes: Cannondale Scalpel 900 in SoBe Green
Posts: 238
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I'm an XC'er... but i know why there arnt many of them... cuz freeride and DH is more fun
SuBHuMaN12356 is offline   Reply With Quote
Old 11-09-04, 03:26 PM   #25
r0cketrider
Junior Member
 
Join Date: Jun 2003
Location: Locust Grove, GA
Bikes:
Posts: 12
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by SuBHuMaN12356
I'm an XC'er... but i know why there arnt many of them... cuz freeride and DH is more fun


LOL...well being a newb to mountain biking I will have to reserve final judgement of that for myself...however for now I would rather ride across 15-20 miles of varied track that just bomb down the same hill all day long.
r0cketrider is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -6. The time now is 03:47 AM.