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


Go Back   > >

Recreational Cyclocross and Gravelbiking This has to be the most physically intense sport ever invented. It's high speed bicycle racing on a short off road course or riding the off pavement rides on gravel like :The Dirty Kanza". We also have a dedicated Racing forum for the Cyclocross Hard Core Racers.

User Tag List

Reply
 
Thread Tools Search this Thread
Old 02-22-06, 04:17 PM   #1
8bitevolution
Devil's advocate
Thread Starter
 
8bitevolution's Avatar
 
Join Date: Feb 2006
Location: Oklahoma
Bikes: Surly Cross-Check, 1976 Schwinn Runabout, 1987 Schwinn Traveler
Posts: 151
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
What makes a cross bike a cross bike?

I've read a lot about cyclocross bikes but I'm still not certain what actually makes a cross-bike. The one thing I've seen a lot is the ability to accept wider tires. But at what point does a road bike become a cross bike?

I've also seen a lot of people use them as commuters. I'm assuming this is because they can handle dirt and pavement equally well?
8bitevolution is offline   Reply With Quote
Old 02-22-06, 05:17 PM   #2
isotopesope
shoot up or shut up.
 
isotopesope's Avatar
 
Join Date: Nov 2003
Location: colorado springs, co
Bikes: yes please.
Posts: 1,961
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
aside from cantilever brake mounts and the ability to accept wider tires, 'cross bikes have higher bottom brackets than a traditional road bike. like a criterium or track bike, a 'cross bike will have a taller standover clearance than a road bike of the same size... the geometry is more aggressive than a touring bike, which looks similar in the respect of tire clearance and brakes... i'm sure i'm probably leaving something out, but i'm pretty new to 'cross bikes.
isotopesope is offline   Reply With Quote
Old 02-23-06, 12:04 AM   #3
bokes
Senior Member
 
Join Date: Mar 2004
Location: SF Bay
Bikes:
Posts: 505
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
also, the cross bike's steering is a bit more relaxed and less twitchy than a road bike (typical head tube angles : road 73.5, cross 72, mtb 71 degrees), and the rider position is a bit more upright than a road bike, but lower and more aero than a hybrid.
bokes is offline   Reply With Quote
Old 02-23-06, 12:10 AM   #4
Moochers_Dad
a blend of wit and charm
 
Moochers_Dad's Avatar
 
Join Date: Mar 2005
Location: Chicago
Bikes: Serotta Fierte and a 1989 Centurian Prestige (plus, various others)
Posts: 885
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Sometimes, the gear cables will route along the top tube, like a mountain bike to keep them from getting muddied and bashed up along the bottom bracket.
__________________
Moochers_Dad is offline   Reply With Quote
Old 02-23-06, 12:13 AM   #5
smurfy
Senior Member
 
smurfy's Avatar
 
Join Date: Jun 2003
Location: Cincinnati, Ohio
Bikes:
Posts: 1,157
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
As far as bottom bracket height is concerned, there is very little difference from my Bianchi Axis and my Eros frames (both lugged "Superset II" steel, same size).

I was curious about this so I one day I measured the BB height while using the same wheelset (700 x 20 road) and the difference is only a quarter of an inch. Of course I would use tires larger than 20mm for cross so that will make the BB height substantially higher.

What is interesting is the wheelbase of my Axis is 2 1/2 inches longer than my lugged steel Colnago road bike despite the Axis's much smaller frame.
smurfy is offline   Reply With Quote
Old 02-23-06, 07:38 AM   #6
jfmckenna
Tiocfáidh ár Lá
 
jfmckenna's Avatar
 
Join Date: Dec 2003
Location: The edge of b#
Bikes: A whole bunch-a bikes.
Posts: 5,440
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 21 Post(s)
I read an interesting note in 'Cyclo-Cross Training & Technique' by Simon Burney , the bible of cyclocross apparently, that the BB height idea came in the old days when they still used clips and straps. The BB was higher so that the cage would not get caught up in the dirt to make mounting faster. I don't know if it is a coincidence that it also is an advantage or that the tradition just stuck with modern designs.
jfmckenna is offline   Reply With Quote
Old 02-23-06, 10:07 AM   #7
jpearl
Rabbinic Authority
 
Join Date: Jun 2005
Location: Silver Spring, MD (MABRA/MAC)
Bikes: Cannondale Cyclocross, Specialized Langster, Giant TCR-C2 Composite
Posts: 650
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
In short, the cyclocross bike is to the cycling world what the rally car is the the automobile world. To understand exactly what a 'cross bike is is to understand cyclocross itself.

Check out cyclocrossworld.com to check it out
jpearl is offline   Reply With Quote
Old 02-23-06, 12:42 PM   #8
Skuda25
Senior Member
 
Join Date: Apr 2002
Bikes:
Posts: 74
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
The Brake Levers are inverted. I hope I do not offend the non-racer crowd; but racing bikes also have the brake cables inverted. In other words, road bikes usually have the back brakes connected to the right front brake lever. Most cross racers set up the rear brake on the left side of the handle bars. When dismounting for an obstacle with only one foot on the pedals as the leg comes to the insde ---- The dismount is usually on the left. Therefore the right hand is usually on the top tube and the left hand is on the bars. This is why the rear brake cable is directed to the left brake lever.

Also - Cross bikes do not usually have chain rings as large as road bikes. Some guys even use single front chain rings. Even if people have doubles, the larger one is only about a 46 or something like that.
Skuda25 is offline   Reply With Quote
Old 02-23-06, 05:09 PM   #9
spunkyruss
Senior Member
 
spunkyruss's Avatar
 
Join Date: Sep 2005
Location: Hatfield, PA
Bikes: '64 Schwinn Traveler, '73 Astra Tour de France, '79 Fuji Gran Tourer, '86 Dahon folder, '94 Specialized Hardrock, '95 GT Timberline, 2005 Jamis Aurora
Posts: 379
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by jpearl
In short, the cyclocross bike is to the cycling world what the rally car is the the automobile world.....
I thought that I was the only one to notice the similarities.
spunkyruss is offline   Reply With Quote
Old 02-23-06, 06:29 PM   #10
jpearl
Rabbinic Authority
 
Join Date: Jun 2005
Location: Silver Spring, MD (MABRA/MAC)
Bikes: Cannondale Cyclocross, Specialized Langster, Giant TCR-C2 Composite
Posts: 650
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by spunkyruss
I thought that I was the only one to notice the similarities.
That's one of the many things that makes 'cross bikes so damn sexy!
jpearl is offline   Reply With Quote
Old 02-23-06, 07:12 PM   #11
BrianJ1888
Senior Member
 
BrianJ1888's Avatar
 
Join Date: Dec 2005
Location: Gainesville, FL
Bikes: Trek 7300FX Disc
Posts: 150
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
When I finally upgrade my current commuter to a cross bike, it's getting painted world rally blue.
BrianJ1888 is offline   Reply With Quote
Old 02-23-06, 07:21 PM   #12
linux_author
370H-SSV-0773H
 
linux_author's Avatar
 
Join Date: May 2005
Location: Penniless Park, Fla.
Bikes: Merlin Fortius, Specialized Crossroads & Rockhopper, Serotta Fierte, Pedal Force RS2
Posts: 2,750
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
- cross bikes have road bars, NOT flat bars!

:-)
linux_author is offline   Reply With Quote
Old 02-23-06, 07:24 PM   #13
endform
blacksheep the blemish
 
Join Date: Nov 2004
Location: Portland/Greendale
Bikes: 1973 Schwinn World Voyageur (manufactured by panasonic), Italvega Super Speciale (fixed, primary ride now), Kona 2004 JTS 10 spd
Posts: 1,063
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Not always, there's no requirement for drop bars in any level of racing I believe. I've been told it was more common in the past for high level dudes to rock a flat bar, but not so much anymore.
endform is offline   Reply With Quote
Old 02-23-06, 08:06 PM   #14
linux_author
370H-SSV-0773H
 
linux_author's Avatar
 
Join Date: May 2005
Location: Penniless Park, Fla.
Bikes: Merlin Fortius, Specialized Crossroads & Rockhopper, Serotta Fierte, Pedal Force RS2
Posts: 2,750
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by endform
Not always, there's no requirement for drop bars in any level of racing I believe. I've been told it was more common in the past for high level dudes to rock a flat bar, but not so much anymore.
- i reviewed the app forms at:

http://www.usacycling.org/news/user/story.php?id=775

and did not see any criteria regarding equipment!!!! i guess i could use a gas-powered vehicle?

- can *anyone* post a link to required equipment and/or restrictions for U.S. Cyclocross events?

- tia!

(and tks to endform for pointing out my possible misperception [i'm in training for next year])...

:-)
linux_author is offline   Reply With Quote
Old 03-03-06, 08:19 PM   #15
tacomee
Senior Member
 
Join Date: Jun 2004
Bikes:
Posts: 1,294
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
The thing to remember is that there is no *pure* bike anymore. Road bikes, MTBs, cross bikes, touring bikes.... all barrow from eachother. The MTB craze of the 80's completely changed road bikes....

Cross bikes are hybrid between MTBs and road bikes-- whatever that means
tacomee is offline   Reply With Quote
Old 03-05-06, 09:16 AM   #16
Ronsonic
Senior Member
 
Join Date: Dec 2005
Location: Sunny Tampa, Florida
Bikes:
Posts: 1,246
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 17 Post(s)
Quote:
Originally Posted by jfmckenna
I read an interesting note in 'Cyclo-Cross Training & Technique' by Simon Burney , the bible of cyclocross apparently, that the BB height idea came in the old days when they still used clips and straps. The BB was higher so that the cage would not get caught up in the dirt to make mounting faster. I don't know if it is a coincidence that it also is an advantage or that the tradition just stuck with modern designs.
Depending on the course that higher BB is still important. It helps keep your pedals out of the deep mud and gives clearance over some of the nastier, rideable obstacles on a course. True it isn't as big a deal as in the clips and straps days, especially on those mostly smooth European courses I see on video, but for the MTB influenced courses that we see it sure makes a difference. Besides, it's good for guys like me who use their cross bike for playing on the single track.

Ron
Ronsonic 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 06:02 AM.