Hot answers tagged pump
30
Advantages:
Fast - generally these fill up your tire much faster than you could with a pump
Less effort - hook up, push button, no pumping
Possibly less weight (but I haven't compared weight of smallest pumps to CO2)
Lower initial investment - a valve and 2 cartridges generally seems to be cheaper than a good small pump.
Disadvantages:
Consumable ...
20
I'm surprised nobody else has mentioned this. Probably the most legitimate purpose of CO2 inflators for bicycles is for inflating tubeless tires. If you need to replace or repair a tubeless tire, chances are you will have zero luck inflating the tire if you try to use a hand pump. You either need to use an air compressor (good luck carrying that with you on ...
16
The answer, in short is: Can you? In some cases, yes. Should you? In most cases, no.
The long answer: The reason you can sometimes use an automotive air-pump on a bicycle tire/tube is because they share an identical valve. (See: Schrader valve/Schrader tube in the Terminology Index). If you have this type, you will definitely be able to get air into your ...
15
If you're at home, use a floor pump. They are very easy to use and have a gauge so you can measure the pressure.
When you're on the road, the quickest and easiest way to get you back on the road is to use CO2 cannisters. They are not that cheap though and the CO2 will leak out of the tube faster than air (mostly N2), requiring topping up over the next few ...
12
Bike shops advertise them because they're consumable items. Every time you use a cartridge the shop is likely to make another sale. Whereas a good pump should last through many, many flats and is less likely to get good placement in the shop.
For advantages/disadvantages, see freiheit's answer.
11
What I find helps, is: tap the valve post a bit to let out a small blast of air (after loosening the captive nut all the way, of course). That helps unstick things and lowers the pressure inside a bit to make it easier to start pumping air in. Just takes a quick tap. If you don't do that, you may need to pump slightly past the pressure of the tire to ...
10
Disadvantage: Environmentally irresponsible.
It seems to me that there is a lot of energy contained within, and required to make, that CO2 cartridge for a single tyre inflation.
I do carry one for emergencies 'in case of pump failure' but I try my best to never use it out of laziness.
9
Yes, this is no problem, though I would suggest practicing once before you have to use it on a flat. The first couple of times I used an inflator I had trouble inflating my tire fully.
No, but I've found that once I start a cartridge it will leak slowly, so it doesn't last forever. In my experience it doesn't last more than a few hours, certainly not more ...
8
Don't bother with an air compressor. Get a proper bike pump. They are cheaper, and will fill a tire to 60 psi with minimal effort. A good bike pump will also require less maintenance. Also it'll only take a couple pumps to top up your tires. Much less time than to drag out a big air compressor. Have you had problems with standard floor/track pumps? What ...
7
It is for adjusting the suspension on a medium to high-end mountain bike (fork), hence the lack of 'Presta' option.
Since you will be returning it, to keep the shop happy and get what you really need, consider getting:
A track pump with gauge and aluminium body. Look for one with a well
engineered head that does Presta and Shrader valves. The easiest
ones ...
6
You can do this in a pinch if you're careful, but I don't recommend it. Your tires need to have Schraeder valves (similar to car tires) or you'll need an adapter for a Presta valve. Fill the tire in very short bursts, checking the pressure in between. Err on the side of underfilling your tires -- put too much air in and you may blow the tire off the rim, ...
6
I have had such experiences even at much lower pressures, (I ride diverse disciplines of mountain bike, so I use my tires around 40 PSI, but still...). I have found three main causes for inflation difficulty:
I will discard air leaks as this one is pretty obvoius.
1) Faulty valve: Some valves get somewow obstructed, and won't get air in as easily as it ...
6
Note: this calculation makes many assumptions, so it's only useful in an 'average use case', not some sort of exact measurement. If you find better information, please post it and I'll update the answer.
How many pumps you would need to fill up a tire depends on many variables. First, the volume of your inner tube, which can be approximated as a torus ...
5
The CO2 inflater is, for me, only an emergency option. It lives in my saddle bag to get me home after a flat.
I haven't rigorously investigated it, but anecdotally I think that tyres inflated with CO2 deflate by themselves more quickly than air-inflated tyres do. Fortunately I haven't punctured too much recently, but the last couple of roadside fixes with ...
5
I figured out what was wrong and managed to fix it. It was a minor enough issue that I'm not going to return the pump.
As shown in the image above, the pressure gauge is protected by a plastic cover. It's pretty easy to slide this cover up the shaft of the pump and out of the way.
Once this is out of the way, the pressure gauge can be removed by ...
5
There are two main standards: Schrader and Presta. Schrader is the standard auto tire valve, while Presta is thinner and has a little knurled knob on top. Schader is relatively straight-forward to use while Presta requires a little finesse.
Most newer "floor pump" valves are "agnostic" and will fit either style without conversion, but some require ...
4
The main benefit that I get from using a CO2 inflater over using a pump is time savings. The CO2 will fill your tire with air faster than a pump.
I always carry a pump in addition to a CO2 inflater because the pump provides unlimited air. It's a good idea to be prepared to handle at least 2 flats so the pump is a nice backup.
I would consider just ...
4
I have a Specialized pump which works very well for both high-volume and high pressure tires.
I've also used a couple of different Joe Blow pumps from Topeak, which worked pretty well.
In light of this, I'm of the opinion that your best bet is to hit up your LBS and see what they have, and what you like using. For me, handle shape and size plays a big ...
4
My advice: Get a floor pump with a pressure gauge and an easy way to switch between shraeder and presta. and get one that is servicable. I have the topeak Joe Blow. Take a look at the dual nozzle.
Also get a portable pump. There are several kinds that unfold and remove the pain of portable pumps (I could never get a good pressure in those because they ...
4
I think there are 3 main factors when reviewing a pump.
Valve connection method, clamp/screw.
Valve support (not every pump supports both types of bike valve, but most do)
How high a pressure tire do you need? (some road bikes need really high, > 100 psi).
A lot of modern pumps use a clamp to secure to the valve. These tend to be awkward when you're ...
3
The question is marginal 'cos its asking about specifics which change over time and products which are not necessarily universally available.
My (very wonderful) trackpump has certain attributes that make me like it but given that its at least 6, more likely 8 or 10 years old so... better to define the things that make me like it:
It works i.e. it puts a ...
3
Answer: Mini-Pump in combination with a Track Pump. Read on for my experiences of 'Cyclaire' pumps...
I purchased a 'Cyclaire' portable pump as I genuinely believed it would be the answer to all of my puncture/tyre care problems. It came with a neat bag that I could use to carry it on the bike and worked perfectly.
However, on a day to day basis I carried ...
3
If you're at home, I recommend an air compressor, there's no easier or quicker way than this. Usually these have pressure gauges, and you can even (with some accessories you can) control the max. pressure, just press and it stops when done.
If on the road, the easiest way (and also the quickest) is:
If near a gas station, use their air compressor (if ...
3
The liters/minute capacity of a compressor says nothing about it's max pressure. Most compressors intended for air tool use are good to about 100psi, maybe 120, but you need to make sure before you spend your money -- the compressor needs to do maybe 30% higher pressure than your "target" pressure, or you'll be forever waiting for the tires to fill.
But as ...
3
Remove the valve cap
With the lever folded flat against the pump insert the valve into the Schrader port of the pump
Lift the lever so it is perpendicular to the pump body this will lock the pump and valve together
Pump the pump until the tire feels firm
Fold the lever against the pump body and quickly remove the pump from the valve
Measure the pressure ...
3
There is a valve in the floor pump, yes, so it is supposed to press in the presta valve the whole time it is attached to it.
I too have seen the problem you refer to in the comment on @Useless's answer - diagnosis has always shown this to be down to the presta valve either catching on the side of the pump fitting or just being stiff and refusing to budge.
...
3
At least two reviews on Amazon for this particular pump report problems with the gauge, so I think you probably need to return it for replacement.
Before you send it back, though, try DanielRHicks's suggestion to twist the gauge body. In a quick search, I wasn't able to find out whether this particular pump has an adjustable gauge, but it's worth a try.
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