Go Back  Bike Forums > Bike Forums > Bicycle Mechanics
Reload this Page >

Mounting Racks on Carbon

Notices
Bicycle Mechanics Broken bottom bracket? Tacoed wheel? If you're having problems with your bicycle, or just need help fixing a flat, drop in here for the latest on bicycle mechanics & bicycle maintenance.

Mounting Racks on Carbon

Old 11-18-20, 12:14 PM
  #1  
Pratt
Senior Member
Thread Starter
 
Join Date: Aug 2019
Posts: 428
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 147 Post(s)
Liked 154 Times in 94 Posts
Mounting Racks on Carbon

Since I have no experience with this I have come to the font of knowledge. Where steel frames have mounting points, for racks, bottle cages, what have you, they have little reinforcements that spread the load and provide threads. I would guess that a frame builder could add these after the fact, at some cost to the paint job. Can a similar thing be done to carbon fiber frames? Sand a small area down to unpainted resin, and epoxy on a hard point for mounting something?
Pratt is offline  
Old 11-18-20, 12:19 PM
  #2  
unterhausen
Randomhead
 
Join Date: Aug 2008
Location: Happy Valley, Pennsylvania
Posts: 21,492
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 4 Post(s)
Liked 1,262 Times in 912 Posts
Calfee does this for some things, not sure about racks. Carbon repair places might do it as well, but I haven't heard of any.
unterhausen is offline  
Old 11-18-20, 03:11 PM
  #3  
70sSanO
Senior Member
 
70sSanO's Avatar
 
Join Date: Feb 2015
Location: Mission Viejo
Posts: 3,403

Bikes: 1986 Cannondale SR400 (Flat bar commuter), 1988 Cannondale Criterium XTR, 1992 Serotta T-Max, 1995 Trek 970

Mentioned: 13 Post(s)
Tagged: 0 Thread(s)
Quoted: 945 Post(s)
Liked 748 Times in 506 Posts
Do you have a carbon frame already or are you planning on getting a touring carbon bike?

I'm not so sure I'd modify a carbon frame for touring.

John
70sSanO is online now  
Old 11-18-20, 03:36 PM
  #4  
gsa103
Senior Member
 
Join Date: May 2013
Location: SF Bay Area
Posts: 4,401

Bikes: Bianchi Infinito (Celeste, of course)

Mentioned: 19 Post(s)
Tagged: 0 Thread(s)
Quoted: 752 Post(s)
Liked 103 Times in 76 Posts
What you're talking about is very easy to do during the design of a frame, and some carbon frames do that. Once the frame is already built, it could potentially be done, but I wouldn't really trust it, because it's applying loads the way the frame designers intended. It's not really any structurally stronger than using a P-clamp, unless it's specifically designed into the frame.
The best option for racks in a CF frame without mounting points, is to mount the rack to the QR and seat-post or seat-post clamp. This approach should work on most stiffer CF frames, but should not be used on a suspension frame like a Domane or Roubiax, because those frames rely on the wheel moving independently of rider.
gsa103 is offline  
Likes For gsa103:
Old 11-18-20, 04:52 PM
  #5  
Pratt
Senior Member
Thread Starter
 
Join Date: Aug 2019
Posts: 428
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 147 Post(s)
Liked 154 Times in 94 Posts
No, I don't have a carbon frame, just idle curiosity. I could see that if the seat stays were pretty thin, even if you could beef up a local spot, the flexing in the middle, caused by a loaded rack might break it.
Pratt is offline  
Old 11-18-20, 06:10 PM
  #6  
Iride01
Hits [ENTER] b4 thinking
 
Iride01's Avatar
 
Join Date: Jul 2017
Location: Mississippi
Posts: 7,193

Bikes: '20 Tarmac Disc Comp '91 Schwinn Paramount '78 Raleigh Competition GS

Mentioned: 31 Post(s)
Tagged: 0 Thread(s)
Quoted: 2811 Post(s)
Liked 1,440 Times in 1,049 Posts
There are plenty of steel and aluminum bikes that don't have attach points for luggage carriers, racks and other stuff.

It's not the material the frame is made of that those features disappear. It's what the intended purpose is for that frame that determines whether manufacturers make certain to add those features or leave them off.

How many mfr's make carbon frames for the purpose you want, I've no idea.
Iride01 is offline  
Old 11-18-20, 06:50 PM
  #7  
wgscott
Banned.
 
Join Date: Jul 2013
Location: CZU
Posts: 7,130
Mentioned: 61 Post(s)
Tagged: 0 Thread(s)
Quoted: 2366 Post(s)
Liked 2,229 Times in 1,110 Posts
One possibility (one that I have been considering, but never pulled the trigger on) is getting a carbon fork with mounts that can handle low rider racks, such as the Spork 3.0.

https://www.rodeo-labs.com/shop/fork...abs-spork-3-0/


wgscott is offline  
Old 11-18-20, 07:33 PM
  #8  
HillRider
Senior Member
 
Join Date: Aug 2005
Location: Pittsburgh, PA
Posts: 32,812

Bikes: '96 Litespeed Catalyst, '05 Litespeed Firenze, '06 Litespeed Tuscany, '20 Surly Midnight Special, All are 3x10. It is hilly around here!

Mentioned: 37 Post(s)
Tagged: 0 Thread(s)
Quoted: 1653 Post(s)
Likes: 0
Liked 507 Times in 384 Posts
Here is a current article detailing 50 different carbon frame Touring/Gravel bikes: https://www.cyclingabout.com/carbon-touring-bikes/

Just about all of them have eyelets and mounts for racks, fenders, frame packs, etc. So, yes it can be done.
HillRider is offline  

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


Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service - Do Not Sell My Personal Information -

Copyright 2021 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.