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 03-11-09, 07:02 PM   #1
jgg3
Senior Member
Thread Starter
 
Join Date: Jan 2008
Location: (BOS + PVD)/2
Bikes:
Posts: 283
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Toe Overlap with CX frames

I am shopping/hunting for a CX frame that will primarily be used for winter training and at least a test of commuting (25mi one way), and just maybe might try a cross race next season.

My focus though is a winter training bike, with full fenders. My concern is toe overlap. Modern frames seem to simply ignore this issue, and I have done some research (asked around, searched threads here) and most people seem to answer that it isn't an issue. But I have pretty severe overlap on my carbon road frame, and I think it is a big issue -- I haven't gone down yet, but there have been many low speed maneuvers where I had a little "oops" moment. So despite what I am hearing, I still want to minimize toe overlap on a CX bike, especially since it will have full fenders most of the time. Are there some frames that are particularly better on this point than others, or do I have to back out the geometry from the typical frame specification?
jgg3 is offline   Reply With Quote
Old 03-11-09, 07:36 PM   #2
Barrettscv 
Have bike, will travel
 
Barrettscv's Avatar
 
Join Date: Feb 2006
Location: Edwardsville, Illinois
Bikes: Colnago Nuova Mexico, Eddy Merckx Corsa Extra, Pinarello Gavia, Schwinn Paramount, Motobecane Grand Record, Peugeot PX10, Serotta Nova X, Simoncini Cyclocross Special, Origin8 monstercross, Pedal Force CG2 and CX2
Posts: 10,415
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 14 Post(s)
What size frame are you expecting to use?

Michael
__________________
When I ride my bike I feel free and happy and strong. I'm liberated from the usual nonsense of day to day life. Solid, dependable, silent, my bike is my horse, my fighter jet, my island, my friend. Together we will conquer that hill and thereafter the world.
Barrettscv is offline   Reply With Quote
Old 03-12-09, 02:09 AM   #3
scattered73
Justin
 
scattered73's Avatar
 
Join Date: Jan 2007
Location: Bayou City
Bikes: Soma Double Cross, KHS Urban Uno
Posts: 1,051
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Only time I notice it on my cross bikes is when I have large tires on them and even then it was only remotely an issue when on mtb trails doing sharp slow turns or doing a track stand. I never felt like I was going to loose control of the bike or fall down and even if I did it would only be a slow speed fall which is more funny than painful. You could always get shorter crank arms and or try adjusting your cleat placement. Oh, wait with full fenders now I remember why I threw away my fenders I kept knocking them out of alignment with my feet really annoyed the piss out of me.
scattered73 is offline   Reply With Quote
Old 03-12-09, 05:45 AM   #4
jgg3
Senior Member
Thread Starter
 
Join Date: Jan 2008
Location: (BOS + PVD)/2
Bikes:
Posts: 283
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by Barrettscv View Post
What size frame are you expecting to use?
Ah. Good question, I should have mentioned that. I ride a 54cm carbon Fuji as my race bike. But that only because the top tubes on modern bikes (compared to the late 70's, when I started) are excessive. I was planning on a 56cm CX frame to help the overlap issue some.
jgg3 is offline   Reply With Quote
Old 03-12-09, 11:23 AM   #5
thirdin77
Senior Member
 
Join Date: Jul 2007
Location: San Jose, Ca
Bikes: 09 Specialized Tricross Sport
Posts: 1,213
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
It seems to me that cross bikes have differing bottom bracket drops or heights and you can look for one with a lower bottom bracket. At least, it's my understanding that a higher bottom bracket means more likelihood of toe overlap.

I use my cross bike as you describe, a road bike with wide tires and fenders. The toe overlap is annoying and I have to adjust the way I pedal when making a low-speed turn like at an intersection.

Concerning geometry, all the cross bikes that I was looking at were going to be the same as my road bike (ETT) 58cm size. I would've gone bigger only to get a longer head tube.
thirdin77 is offline   Reply With Quote
Old 03-12-09, 11:38 AM   #6
MIN 
big ring
 
MIN's Avatar
 
Join Date: Mar 2007
Location: philadelphia
Bikes:
Posts: 5,838
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by thirdin77 View Post
It seems to me that cross bikes have differing bottom bracket drops or heights and you can look for one with a lower bottom bracket. At least, it's my understanding that a higher bottom bracket means more likelihood of toe overlap.

I use my cross bike as you describe, a road bike with wide tires and fenders. The toe overlap is annoying and I have to adjust the way I pedal when making a low-speed turn like at an intersection.

Concerning geometry, all the cross bikes that I was looking at were going to be the same as my road bike (ETT) 58cm size. I would've gone bigger only to get a longer head tube.
Nope, top tube length, crank length and HTA and fork rake, but not BB height.
MIN is offline   Reply With Quote
Old 03-13-09, 06:54 PM   #7
pwdeegan
smitten by саша
 
pwdeegan's Avatar
 
Join Date: Sep 2008
Location: Eugene, OR
Bikes: Salsa La Cruz with Rohloff; mutt parts
Posts: 525
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
in commuting situations, the front part of my shoe bonks my full fender in sharp low-speed turns (i use full VO fenders, but i also bonked my old SKS P35s). i've learned to ride toe-up to mitigate the impact, and i've never bumped the fender out of alignment this way; i simply "graze" the fender with my shoe, like a light polishing ritual. when i ride trails, obviously, i take the fenders off---never mind the toe overlap then, you'll be harvesting branches and begging for a fender disaster.
pwdeegan is offline   Reply With Quote
Old 03-16-09, 10:03 AM   #8
Barrettscv 
Have bike, will travel
 
Barrettscv's Avatar
 
Join Date: Feb 2006
Location: Edwardsville, Illinois
Bikes: Colnago Nuova Mexico, Eddy Merckx Corsa Extra, Pinarello Gavia, Schwinn Paramount, Motobecane Grand Record, Peugeot PX10, Serotta Nova X, Simoncini Cyclocross Special, Origin8 monstercross, Pedal Force CG2 and CX2
Posts: 10,415
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 14 Post(s)
Quote:
Originally Posted by jgg3 View Post
Ah. Good question, I should have mentioned that. I ride a 54cm carbon Fuji as my race bike. But that only because the top tubes on modern bikes (compared to the late 70's, when I started) are excessive. I was planning on a 56cm CX frame to help the overlap issue some.

Most 56cm frames will have this issue. Look here http://forums.roadbikereview.com/sho...85083#poststop and go the post number 16 and check wheelbase length. Subtract the chainstay length from the wheelbase length to indicate how much length exists between the BB and front axle. Look for bikes with long wheelbase numbers combined with normal chainstay numbers. I have a Soma Double Cross and it fits this discription, I never have this issue, but I ride a size 60!

You might consider a touring bike like the Long Haul Trucker to avoid this problem.

Michael
__________________
When I ride my bike I feel free and happy and strong. I'm liberated from the usual nonsense of day to day life. Solid, dependable, silent, my bike is my horse, my fighter jet, my island, my friend. Together we will conquer that hill and thereafter the world.

Last edited by Barrettscv; 03-16-09 at 10:20 AM.
Barrettscv is offline   Reply With Quote
Old 03-16-09, 10:05 AM   #9
MIN 
big ring
 
MIN's Avatar
 
Join Date: Mar 2007
Location: philadelphia
Bikes:
Posts: 5,838
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by Barrettscv View Post

You might consider a touring bike like the Long Haul Trucker to avoid this problem.

Michael
This is silly and thread is silly. You should not buy a frame around an irrational fear of toe overlap. It's just not a real consideration unless you ride below 5 mph all the time. Just drop your outside foot to the bottom when you corner.
MIN is offline   Reply With Quote
Old 03-16-09, 10:13 AM   #10
Barrettscv 
Have bike, will travel
 
Barrettscv's Avatar
 
Join Date: Feb 2006
Location: Edwardsville, Illinois
Bikes: Colnago Nuova Mexico, Eddy Merckx Corsa Extra, Pinarello Gavia, Schwinn Paramount, Motobecane Grand Record, Peugeot PX10, Serotta Nova X, Simoncini Cyclocross Special, Origin8 monstercross, Pedal Force CG2 and CX2
Posts: 10,415
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 14 Post(s)
Quote:
Originally Posted by MIN View Post
This is silly and thread is silly. You should not buy a frame around an irrational fear of toe overlap. It's just not a real consideration unless you ride below 5 mph all the time. Just drop your outside foot to the bottom when you corner.
This thread might belong in the commuter forum, but your recommendation will not work in every situation.
__________________
When I ride my bike I feel free and happy and strong. I'm liberated from the usual nonsense of day to day life. Solid, dependable, silent, my bike is my horse, my fighter jet, my island, my friend. Together we will conquer that hill and thereafter the world.
Barrettscv 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 09:32 PM.