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 11-06-10, 10:43 PM   #1
Watchdog
Senior Member
Thread Starter
 
Join Date: Sep 2010
Location: Burnaby
Bikes: Rocky Mountain Blizzard, Haro Roscoe (sold), Giant TCX Rabobank, Cervelo RS
Posts: 152
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
29er wheels on a cross bike?

I believe 29er wheels are the same diameter as 700c. Has anyone here ever put 29er wheels on their cross bike?

I'm curious as to thoughts about this. I know the frame geometry is different, but I'm still curious if anyone has ever used this setup and if so, in what situations.
Watchdog is offline   Reply With Quote
Old 11-07-10, 06:02 AM   #2
flargle
Senior Member
 
Join Date: Jul 2007
Bikes:
Posts: 2,119
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 2 Post(s)
Most 29ers have 135mm rear spacing and disc brakes, meaning the wheels won't fit under a cross bike and probably don't even have braking surfaces on the rims.
flargle is offline   Reply With Quote
Old 11-07-10, 03:01 PM   #3
weaver
Senior Member
 
Join Date: Apr 2007
Location: Ellensburg, WA
Bikes:
Posts: 143
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I've used 29er wheels on 700c bikes, and vice versa many times. Just need to adjust the axle spacing as necessary, which is not a big deal. Obviously, don't try using disc only wheels with canti brakes but that kind of goes without saying. I wouldn't say 29er wheels would be ideal for cx as they tend to be beefier, i.e. heavier and more built than we require but, to answer the question yes it works.
weaver is offline   Reply With Quote
Old 11-07-10, 07:14 PM   #4
MaxCycles
Junior Member
 
Join Date: Dec 2009
Bikes:
Posts: 20
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Good info so far, just wanted to add that some steel cross frames have 132.5 rear spacing so you can used 135 mtb hubs or 130 road hubs. These frames would work easily with 29er wheels. Road wheels are plenty strong in my experience, for both cx racing and trail riding.
MaxCycles is offline   Reply With Quote
Old 11-08-10, 01:32 AM   #5
Watchdog
Senior Member
Thread Starter
 
Join Date: Sep 2010
Location: Burnaby
Bikes: Rocky Mountain Blizzard, Haro Roscoe (sold), Giant TCX Rabobank, Cervelo RS
Posts: 152
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by weaver View Post
I've used 29er wheels on 700c bikes, and vice versa many times. Just need to adjust the axle spacing as necessary, which is not a big deal. Obviously, don't try using disc only wheels with canti brakes but that kind of goes without saying. I wouldn't say 29er wheels would be ideal for cx as they tend to be beefier, i.e. heavier and more built than we require but, to answer the question yes it works.
How does one adjust the axle spacing? You don't mean bending the frame do you? If so, I'm guessing you can only do this so many times before metal fatigue becomes an issue.
Watchdog is offline   Reply With Quote
Old 11-08-10, 07:32 AM   #6
NormanF
Senior Member
 
Join Date: Mar 2007
Bikes:
Posts: 5,370
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
The Voodoo Agwe and now the Nakisi... let you run both 700C and 29er wheels.

The Agwe is more upright and the Nakisi has drop bars. Oh and they come with cantis if CX is your thing.
NormanF is offline   Reply With Quote
Old 11-08-10, 09:22 AM   #7
Cynikal
Team Beer
 
Cynikal's Avatar
 
Join Date: Apr 2004
Location: Sacramento CA
Bikes: Too Many
Posts: 5,934
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 5 Post(s)
Quote:
Originally Posted by Watchdog View Post
How does one adjust the axle spacing? You don't mean bending the frame do you? If so, I'm guessing you can only do this so many times before metal fatigue becomes an issue.
You swap axles and remove 2.5mm of spacers from both sides.
Cynikal is offline   Reply With Quote
Old 11-08-10, 11:27 AM   #8
fietsbob 
coprolite
 
fietsbob's Avatar
 
Join Date: Jun 2010
Location: NW,Oregon Coast
Bikes: 7
Posts: 22,148
Mentioned: 19 Post(s)
Tagged: 0 Thread(s)
Quoted: 1130 Post(s)
Quote:
You swap axles and remove 2.5mm of spacers from both sides.
there is no 2,5mm spacer to remove from a freehub.
and there will be no clearance for the chain, if there were.

you re center the rim over the axle, as taking out the 5mm spacer from the left,
throws it off..

Wheel truing.. Re-Tension spokes. add dish.

Last edited by fietsbob; 11-08-10 at 11:31 AM.
fietsbob is online now   Reply With Quote
Old 11-09-10, 10:25 AM   #9
Cynikal
Team Beer
 
Cynikal's Avatar
 
Join Date: Apr 2004
Location: Sacramento CA
Bikes: Too Many
Posts: 5,934
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 5 Post(s)
I've done it with just spacers. If I remember correctly (and it has been a while) there were several washers between the locknuts. Mine didn't require any redishing but I could see how that would be needed with other hubs.
Cynikal is offline   Reply With Quote
Old 11-09-10, 12:13 PM   #10
Captain Blight
Senior Member
 
Captain Blight's Avatar
 
Join Date: Oct 2009
Location: Minneapolis
Bikes: -1973 Motobecane Mirage -197? Velosolex L'Etoile -'71 Raleigh Super Course
Posts: 2,473
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
29er=700C. Same-same. I'm pretty sure ALL 'cross bikes come with 29er wheels. Are you talking about TIRES?
Captain Blight is offline   Reply With Quote
Old 11-09-10, 12:34 PM   #11
Cynikal
Team Beer
 
Cynikal's Avatar
 
Join Date: Apr 2004
Location: Sacramento CA
Bikes: Too Many
Posts: 5,934
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 5 Post(s)
We are talking about axle spacing. Road is 130mm while MTB is 135mm. Most 29er wheels are 135mm, thus the issue.
Cynikal is offline   Reply With Quote
Old 03-21-16, 08:49 PM   #12
Dylanfly
Newbie
 
Join Date: Feb 2005
Bikes:
Posts: 2
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I did a bit of research on this subject... If you're just buying rims, be sure you're matching disc-specific or rim-brake rims for your bike. So many people are switching to disc brakes---would make the switch to 29er wheels easier, with the caveat about 130 / 135 spacing. If , like me, you still use rim brakes, well your 29er choices shrink a lot. I found the WTB sells cross-specific 700c rim-brake rims. They look nice. 36 holes and built to take some pounding. I got a lot of mileage out of my Mavic Open Pros; though the rear is dying. I've heard that some people also use Mavic CXP Elites (a.k.a. CXP33) for cross bikes. I'm looking for something tougher though; something tough enough to bash over potholes, ruts, fallen trees, etc. In the end I decided to go with a pair of Campy Khamsin CX wheels; since they're designed for the purpose allegedly. Fingers X'd!
Dylanfly is offline   Reply With Quote
Old 03-21-16, 08:58 PM   #13
mack_turtle
n00b
 
Join Date: Jan 2008
Location: Austin, TX
Bikes: Soma Juice
Posts: 418
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 6 Post(s)
OLD THREAD.

I have rims on my cross bike that are marketed as "29er" wheels. conventional QR axles and disc brakes. works fine. I can run 25mm tires on them for 42mm, either works fine.
mack_turtle 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 02:11 PM.