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 02-24-04, 09:57 PM   #1
S. Marley
Junior Member
Thread Starter
 
Join Date: Oct 2003
Location: Desert Southwest
Bikes:
Posts: 21
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Why smaller for cross?

Hello to all -

I have seen several posts that mention sizing a cross frame 1-2 cm smaller than a road frame. Why is this? When you decrease the seat tube length, you also decrease the top tube length. You then must make up for a cramped fit by installing an extra-long stem. It just seems to me that any decrease in seat/top tube (smaller than your road frame size) is asking for an uncomfortable and poor-handling bike, as your weight is now too far forward (short top tube & long stem).

Am I missing something? I am in the market for a cross frame and my road frame measures 57 cm (c-c) at the seat tube and 57.5 cm (c-c) on the top tube. It seems that all manufacturers offer a 56 and a 58. Since I fit squarely in between sizes, I really want to make sure of the correct frame before I lay out the cash.

Thanks for any and all help.

Rgds,

Steve Marley
S. Marley is offline   Reply With Quote
Old 02-24-04, 10:26 PM   #2
BlastRadius
Direct Hit Not Required
 
BlastRadius's Avatar
 
Join Date: Nov 2003
Location: San Bruno, CA
Bikes: Leopard DC1, Ridley X-Fire, GT Zaskar 9r
Posts: 6,190
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I think you want the smaller frame for better clearance over the top tube and more agile handling in the rough stuff. I'd imagine the 56cm would be great for you. If you factor in the larger tires, your standover would likely be the same as a 57cm road bike.
BlastRadius is offline   Reply With Quote
Old 02-25-04, 07:50 AM   #3
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: 11 Post(s)
The bottom bracket is higher on cx bikes typically. So this would effectivly shorten your seat tube length and not the top tube. imo the top tube is the real important measurement.
jfmckenna is offline   Reply With Quote
Old 02-25-04, 08:21 AM   #4
Limba
Senior Member
 
Join Date: Oct 2003
Bikes:
Posts: 151
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Everyone measures differently anyway so try both sizes before you buy anything.
Limba 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 11:28 AM.