Well, there's no way to put the Road Morph on my frame. I did have it precariously on my Trek 5200, so it's not so much the carbon, but the size of my bike. I carry two tubes and two cartridges. If I am on a long ride, there are other people around, who have other stuff, too. If I am doing a metric, etc. I might stick 3 tubes in my bag. Carrying the cartridges is easy and we have never had an issue with them (dh had to use one on Sunday). We save the used ones and recycle them on hazardous waste recycling day, but it hasn't been more than 1-3 in the last couple of years, for both of us.