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CO2 — A new top post

12.30.2008 by Ray Niekamp // 2 Comments

co2Here’s a minor milestone for the Bike Noob blog — there’s a new King of All Posts. “CO2 cartridges or a pump?” from July 29, 2008 has overtaken “Smoked by an Old Guy” from April 16.

“CO2” has racked up 1,082 page views, passing Smoked’s total of 1,078. Both posts got a little added push after I created the Favorite Posts tab at the top of the blog, but lately, I’ve watched CO2’s visits jump by as much as 30 a day to rapidly close the gap.

“Smoked By An Old Guy” has some sentimental value for me, because it was this post that made this blog catch on. Kent Peterson, the author of the popular “Kent’s Bike Blog,” spotlighted this story on his blog, and my daily number of page views surged. So once again, thanks Kent.

I appreciate the attention both posts continue to get, and I wonder: Are there still some unresolved issues about using CO2 cartridges as opposed to pumps? Let me know — I’m interested in what you have to say on the matter, and I’ll be happy to update everyone on where the sentiment lies.

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Categories // Accessories, Blogging, Maintenance, Rides, training Tags // Accessories, blog, CO2, flat tire, pumps, Smoked

CO2 cartridges or a pump? I’ve decided.

11.11.2008 by Ray Niekamp // 10 Comments

After my fumbling experience with a flat tire last month, I decided to rethink my practice of carrying CO2 cartridges for dealing with flats on the road. I still think the cartridges are a neat solution to the space and weight challenge bikers face. But I’ve never felt that they worked the way they’re supposed to — that the tire inflated as much as it needed to (Yes, I know — it’s not the tool, it’s the carpenter). So I decided to go in the other direction. I bought a mini pump.

Actually, it’s kind of a hybrid between a frame mounted pump and a mini pump. It’s a Topeak Road Morph. And sharp-eyed readers will recognize that it’s not exactly new. On my first ride carrying the pump, it was the indirect cause of my fall.

The switch to the pump was not without some adjustments. Fall aside, I had to deal with two other problems: mounting it to the frame and a quality deficiency.

The Road Morph is not really a mini-pump, which some riders carry in their jersey pockets. It’s a little too big for that. So it must be mounted on the frame. Topeak gives the owner two options for that: fastening it to the top tube with zip ties, or attaching to the seat tube using the water bottle braze-ons.

I opted to zip tie it to the top tube. That turned out not to be the best solution, at least for me. The zip ties kept catching on the inside of my thighs when I dismounted, even after trimming the ties back as far as possible. I was concerned they would tear my riding shorts. Then, the hose popped out of its cradle when I rode on a rough stretch of road.

The second deficiency was a quality issue. The bezel that attaches to the tire valve was missing. It’s not an obvious thing, because the end of the hose looks pretty normal even without it. I didn’t discover it was missing until the morning of my century, when I had to scramble to find a floor pump to top off my tires. I rode the century with the pump zip tied to the frame, but pulled it off as soon as I got home after the ride.

pumpThe LBS was happy to exchange the pump for a new one — one that had the bezel. I decided I didn’t like the zip tie attachment, so I took off one of the water bottle brackets and mounted the pump there. Now it not only works the way it’s supposed to — it looks better, too. I think.

Yeah, I know, I’m down to one water bottle per ride now. Not a problem. One bottle is good for about 20 miles for me, and when I run low, I look for a gas station or some other place where I can fill it up. Since I’m not planning on riding another century anytime soon, I can get along fine with one bottle. And if I really need a second one, I can put it in one of my jersey pockets.

So far, I’m happy with my decision. The little pump has several features that make it act like the big guys. It has a little flange that flips out so you can hold it under your foot, just like a floor pump. Its handle can flip sideways to resemble a t-shaped handle for pumping. It even has a rudimentary pressure gauge.

I have yet to try the pump under battlefield conditions. It’s only been used to pump up some spare tubes in my garage. But it worked just fine on them, got them to full pressure without a hassle, and when my next flat comes (knock wood) I’ll be ready.

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Categories // Accessories, Equipment Tags // Accessories, cartridges, CO2, Equipment, pumps

CO2 cartridges or a pump?

07.29.2008 by Ray Niekamp // 39 Comments

I’m probably flirting with danger here, but it’s been awhile since I’ve flatted.

Even so, I try to be ready if it should happen. My seat bag has a spare tube, a patch kit, and what I would most likely use in the event of a flat — a CO2 inflator and several CO2 cartridges.

The CO2 is convenient, but it’s not a panacea. When I have flatted in the past, I’ve found it’s not easy to get the right amount of air into the tire. I’ve resorted to a series of short bursts on the inflator trigger, and try to determine by feeling the tire whether it’s got enough pressure. When I first started using it, at a time when flats were much more frequent, I sometimes wasted a cartridge and needed two to fill the tire. And sometimes, I only managed to inflate the tire enough to make it home.

Another concern is the cost. The cartridges run about $3.50 each, so if one or two are wasted by fumbling around, the tire repair is suddenly costly. I usually carry four in my seat bag, so I can give one or two to another biker who might be flatted with no air.

Then there’s the environmental issue. Carbon dioxide is a greenhouse gas. Do I really need to contribute to the Earth’s problems?

What’s the alternative? A pump. The choice is between a frame-mounted pump and a mini-pump that can mount to a frame or even fit in your jersey pocket.

A Zefal frame-mounted pump.
A Zefal frame-mounted pump.
A Blackburn mini pump.
A Blackburn mini pump. It's actually less than one-half the length of the Zefal.

The issue with the pumps is also one of convenience, and efficiency, too. I’ve had occasion to use a mini-pump, and I’m not crazy about them. They have trouble supplying enough air pressure, especially to a road tire that may take over 125 psi. But I like the convenience of the CO2 inflator, and I’m not sure if another gizmo fastened to my bike frame would be worth the bother.

For now, I’ll continue to go with the cartridges and inflator. I’ve had enough experience with them that I’m confident I won’t waste them in future situations. And for every day that I go without a flat, cost becomes less of an issue. But I’d sure like to hear your opinion. Inflator or pump?

(Since this post last July, I’ve resolved the issue to my satisfaction.  Here’s what I decided.)

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Categories // Accessories, Equipment Tags // Accessories, C02, cartridges, Equipment, pumps

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