![]() Make sure the pump comes with a gauge and keep your tyres at pressure because they are then less likely to become punctured. Invest in a track pump with a dual Presta/Shrader head and a 'lock lever' that you flip over to get a snug fit, regardless of the valve type. move the valve to the top of the wheel, pull down and use your other hand as a pad over whatever you're going to hit. FWIW, I'm aware that the soft plastic used is not really rubber.Īctual safety tips for doing what you're doing now without losing skin. But even the expensive pumps use a similar rubber, so I suspect it's a compromise between effective sealing and longevity. I think as you pump the hot air heats the mechanism, the rubber softens and expands slightly, and it glues itself to the valve. I have a useful facial expression for situations like that, combining disbelief and irritation.īut even the best adjustment doesn't seem to work especially well. Once someone used it, tightened the barrel right up then complained that it was hard to get it off the valve. In theory I could release the compression lever then undo that barrel a little to get the pump off, but it's hard to get at the barrel when it's on a valve.įor my floor pump it's easier - I just applied a bit of thread locking glue, adjusted it properly and left it. But to use it I back that barrel off a turn or so, then pump up my tyre. I find that on my "topeak road morph" on-bike pump I have to overtighten the head when I'm not using the pump or the adjustment barrel comes loose and falls off (luckily, into my pannier). ![]() The ideal is obviously that it's loose enough to slide on and off easily, but when compressed is tight enough not to leak. Most of them have an adjustment for how compressed the rubber cylinder starts out, which affects how compressed it gets. The best I've found is to adjust the pump/head properly. Don't be tempted to switch to schrader valves, they have much the same problem. Or less if you go for the old-style frame pump with hose style, which also suck (the hose holds air that doesn't go into the tyre, making it harder to pump your tyre up). They're also regarded as a high-end option, so you'll pay more for a pump with one. ![]() They're annoying in their own way - screwing them on is tedious. The only real solution is one of the screw-on heads. I think any pump that uses a rubber cylinder with a hole in it, and compresses that to lock on will have the same problem. This should be finger-tightened once the tire is inflated.This seems to be common. There is another locknut at the bottom of the valve stem. Once the tire is fully inflated, remove the air pump, remove the adapter, and finger tighten the locknut. This is written on your sidewall and is usually marked with a ‘PSI’ rating (pounds per square inch). Attach your air pump and inflate the tire to the recommended pressure. The adapter effectively converts your Presta valve to a Schrader valve so that you can use a traditional air pump to inflate it. ![]() Now install the adapter by carefully threading it clockwise onto the valve stem’s threads. Notice that you can now let air out by depressing the locknut. The first step is to remove the cap and then loosen the valve’s locknut all the way counter-clockwise. In this tutorial, we’ll learn how to use the adapter to inflate your tire. These can be purchased for about a dollar at your local bike shop. To inflate a Presta valve you’ll need a regular air pump and a special adapter. They are a little trickier to inflate as they use a manual locknut to open the valve for inflation. Presta valves are a lot narrower and are commonly found on higher end bikes with narrow rims. You can inflate this style easily with any regular air pump. They use an internal spring to allow inflation while keeping the valve closed. Schrader valves are most commonly found on bikes with wide rims and are the same style you’ll find on most automobiles. The two most common valve types these days are Presta valves and Schrader valves. 01:08 - Many hand-held air pumps have a built-in presta valve adapter.
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