another +1 for Topeak Road Morph G (with guage)

CO2 is nice and all but has it's problems.

1) I can't stand the thought of having n+1 flats when n = the number of cartridges I carry. That makes CO2 really only useful on group rides where the aggregate number of CO2 cartridges and statistics means nobody goes without means of inflating a tire.

2) I have some ethical issues with discarding a fairly large chunk of metal every time I have a flat.

3) The only advantage of CO2 over a pump is how it can speed up flat changing. Thus, I only use it on group rides where nobody wants to wait 10 minutes for someone to change a tube.

Finally, flats might be relatively rare, but they are fatal to a ride if you don't have means to repair. A failed repair, or a tube blown off the rim by the CO2 (happens often enough) means another CO2 cartridge wasted. I have certainly had multiple flats on a ride before. And lastly, perhaps you go 10k miles without a flat, but I certainly can't. At heart, I am still a Boy Scout, which is to say "Be Prepared" is something I've taken to heart. Don't play the odds unless you have to.

I just started carrying a Blackburn CF frame pump on my "nice" bike. It does not look out of place (I can't even see it when I'm riding since it is under the top tube!), doesn't weight much, and I know that I'll always have air. Sure beats having 3 CO2 carts clanking around in my jersey pockets (I went through a period of getting flats with alarming frequency earlier this year). I've only done a practice pump with it and it did a fine job. I think that once I get used to it the frame pump will perform better than a Road Morph, which I also own and have no complaints about. We'll see how many valves I snap off until then.

As far as I know, NOS. I have mine but dropped it a few times. Now I lost it, but I never liked the fact that the compression spring compressed when you pumped.

I have a Zefal frame pump I've had since I started riding in the late 80's. I just recently retired it because it didn't fit the frame on my new Trek very well. I still leave it on my old backup bike. It's always gotten me home.

Topeak. At one point, three guys besides me in the house I lived in used the same pump. It just works.

I've never timed it, but it seems that most of the time is taken up by tube replacement. The actual inflation, even with a pump, is pretty quick. I've never used a mini pump, so maybe those take forever.

I keep mine in the shed.

Another vote for Zefal HPX.

I have used a Blackburn frame pump for the last ten years on both my road bikes, held in place with a Velcro strap. I have eaten more than one free meal, when a rider has suffered an "N+1" flat with CO2 cartridges also.

Zefal pumps on both bikes ftw

My experience is, with a pump, time spent with the tube is about equal to the time spent inflating. With CO2, time spend inflating is about 20 seconds and the rest is messing with the tube. With CO2, you can easily change a flat in under 5 minutes and well less if you are in a hurry.

I have repaired probably a half dozen flats with CO2 and have never had a problem with it or wasted a cartridge, maybe it depends to the inflator that you are using. I have an Air Chuck and it has worked pefectly everytime. I carry it, three cartridges and two tubes and that has always been enough for me.

Yet another vote cast for the Zefal HPX - it just works.

I used to carry co2 but hated them went to a mini frame pump but hated that. went back to a full sized blackburn and like it. it rests under the top tube. the only thing i dislike is rattling on chip and seal roads which are frequent out here. A little duct tape works wonders.

Topeak Road morph with gauge. As a side note, I helped out a few riders with the co2, even gave my extra tube with the extra long stem to fit his carbon rims.

When you're riding alone, it really doesn't matter how fast you change a puncture. The quick change thing is way over emphasized. With group rides, its a different mentality.

I think it depends on how much of a hurry you are in (if it's wet and raining and you have a half a dozen teammates waiting on you...) and what kind of rims you are using. If you don't have the tire seated and you put the first puff of air into the tube too fast, you can quite easily unseat the tire.

And, FWIW, three cartridges and the Air Chuck has got to weigh about as much as a decent minipump. (I have both, when I am worried about weight, or on one of my carbon bikes, I carry a minipump.)

While there was nothing cooler than a Silca Impero back in the day, I now use Co2 and a mini-pump backup. The main reason is the Road Morph is too big, never really mounted out of the way very well, and the Co2/mini-pump all packages up more nicely.