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Help with a good 6" mini pump....(13 posts)

Help with a good 6" mini pump....kelmeboyAZ
Feb 23, 2003 9:38 AM
I'm tired of carrying my 10" blackburn pump. Can you recommend a good mini-pump that's 5-6" and fits in your jersey pocket? How 'bout the Crank Brothers mini pump at 5.75"?
good mini pump = oxymoronBergMann
Feb 23, 2003 10:03 AM
A mini pump is better than no pump, but to put it bluntly, there is no such thing as a good mini pump. They take forever to inflate MTB tires, and don't do well with higher road pressures, and all that extra thrashing around _will_ take its toll on presta tubes.

Instead, get a "Superflate" CO2 inflator.
The 12g, nonthreaded model is perfect for inflating road tires up to 110 psi, and has the advantage of using standard "BB-gun" air cartridges you can get at Walmart by the dozen for 1/10th the cost of what your LBS will charge you.

The threaded "Airchuck" model will allow you to use larger 16g cartridges for inflating MTB tires to around 40 psi.

Both models allow you to dose the amount of CO2 you put in, which is handy for pre-flating the tube a bit before installation, and allows you to stop inflation before the entire cart. is spent if you're running narrow rubber.
well I sort of agree but . . .Rich_Racer
Feb 23, 2003 11:15 AM
I have the dual action crank brothers pump and relative to other mini-pumps it's pretty good. I thin k it cost me about $15 but i can't really remember. Basically - a mini-pump is supposed to just get you home. At least the crank brothers pump is adjustable so it has a normal mode for getting air into your tire, then a second setting for getting extra pressure in. I've never used a mini-pump on a mtb - I expect that would be pretty annoying.

yours,
Rich.

p.s. never used co2 cartridges.
Use CO2 and finish your ride!BergMann
Feb 23, 2003 4:07 PM
CO2 doesn't just "get you home", it gives you full tire pressure so you can get about the business of finishing your ride.

That's the clincher (so to speak)!
Like saying "Looking for a good smack in the @$$"!!!(nm)Alexx
Feb 23, 2003 1:27 PM
Torelli Mini Pumpunchained
Feb 23, 2003 1:34 PM
http://www.torelli.com/parts/acces.html#anchor1849110

They will get you home in style. I tend to get all my flats in the city, which is close to home anyway. I like two bottle cages, and refuse to mount a pump under my top tube.

Thank-you Torelli for the great mini-pump. (Colorado Cyclist carries it I believe).

Crank Brothers weighs a few grams more, and is slightly larger, but it may be worth looking into.
I had one and just got CO2ishmael
Feb 23, 2003 4:32 PM
pumping with that thing was making my upper body to bulky and muscley...Co2 will keep your arms spigetti thin and your mind free of hate thoughts...How bout nirtous oxide?
Good luck getting to 100PSI...Quack
Feb 24, 2003 8:39 AM
As a commuter, I've tried the Torelli pump and can say that it definitely is small enough. One down side is that to get your 23mm tire up to 100PSI will take about 200 strokes and is a lot of work. One added bonus is that while your pumping up your tire, the motorists driving by will think your "whacking the mole" because the pump is so short, you have to hold the wheel in your lap to support it. It's good for a few honks anyway. I went with a little longer Performance Hurricane pump with a telescoping barrel that can actually get to 100PSI in about 100 strokes and still fits in the courier bag. I think it's about 8-9" long.

Larry
I pack a Torelli.....DINOSAUR
Feb 24, 2003 9:02 AM
If you want to count on it as your main inflation system- forget it. I use mine to get enough air into my spare tube to mount my tire. Or-if I'm in a good spot I'll use it to inflate the tube to see where the puncture is so I can patch the tube. I pack c02 and the only thing I worry about is having more flats then c02 cartridges and that's happened once. You might be able to get around 60 psi with the Torelli, I don't know how they came up with the 100 psi rating. If you want a bullet proof, never-let-you-down inflation device go to a full length frame pump such as a Blackburn FP-1, Zefal HPX or a Silca Impero. The problem is a lot of road bikes don't come with pump pegs (or chain hangers).....
re: Help with a good 6" mini pump....TheKid
Feb 24, 2003 8:42 AM
I carry the crank brothers pump and CO2. I use the pump to inflate the tube for installation and for testing how the tire is seated on the rim. Then I use the CO2 to fully inflate the tire.

I did have the ride from hell and had four flats. I carry two cartridges so carrying the pump and patches did get me home instead of leaving me stranded on the road.
inherent problem with minisDougSloan
Feb 24, 2003 9:17 AM
I've tried the minis, and they really, really suck. While they are better than nothing at all, do not count on them as the primary inflation device. They might be ok for backup if you run out of CO2's (I carry 3), but that's about it.

Here's the problem. With each stroke of the pump, the air gets compressed to smaller volume and higher pressure; that pressure must then exceed that of the tube to inflate the tube. The higher the pressure of the tube becomes, the more the air must be compressed inside the pump before it is greater than the tube. As the tube gets greater and greater pressure, somewhere around 60 psi with the minis, the volume of air that is compressed to greater than tube pressure is miniscule, as the stroke volume is so small. Plus, to allow you to create any decent pressure at all, the diameter of the cylinder must be small, again reducing volume with each stroke. If you have any leakage around the valve at all, then you are really screwed.

A double stroke pump will help fill a little faster, but still does not overcome the problem inherent with a short stroke.

Especially if you ride with others and don't want to either borrow their pumps or have them wait on you for 10 minutes to change a tube, get CO2 or a larger pump.

Respectfully submitted,

Doug
I use a SILCA mini-pumpmerckxman
Feb 24, 2003 9:32 AM
I went from a pump to CO2 and now back to a pump, but this time a SILCA mini-pump. I found my self in situations of having used up 2 CO2 cartridges, the number I normally carried. I never have run out of air with the mini! It easily pumps my tires to 100lbs which is plenty enough to ride all day.
It doesn't existpmf1
Feb 24, 2003 9:37 AM
I'll add my 2 cents on top of everyone else...

I've tried several mini pumps and they all suck. Probably the best one was a Blackburn, but even that took a good 300 strokes to get the tire rideable. Not much fun when its 95 degrees out.

After several years of this, I bought an Innovations CO2 dispenser. Works very well. Make sure you get the type that takes unthreaded cylinders -- that way you can buy them cheap at a sporting goods store that sells air guns (I go to WalMart). Or you can spend twice as much at a bike shop.

The room that 3-4 cylinders and the dispenser take up is no more than a mini pump. And it fills a tube instantaneously.

None of my bikes have pump pegs. If your bike does, look into a Zefal frame pump. These things really work. I guess you could velcro it onto your frame, but I don't want to do that out of fear of messing up the paint.