Pratt

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?

unterhausen

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.

70sSanO

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

gsa103

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.

Pratt

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.

Iride01 

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.

Cyclist0108

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/

HillRider

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.