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Often Bicycle tires lose air slowly. It's just their nature. Because they don't hold a lot of volume of air and because that air seeps out over a relatively short period of time (a week for a road bike tire and about two weeks for a MTB knobby), there's a risk if you just ride without checking the tire pressure. If you bike on soft tires and you hit a pothole, rock or other obstacle, it's possible to damage or ruin, the tire, tube and worst of all, the rim. A too-soft tire also means that you're working a lot harder and on a mountain bike, it can make for a wobbly, hard-to-handle ride. So, be smart and check your tire pressure regularly: every week during the season for mountain bikes and before every ride for roadsters.
They should be designed to fit both styles of valve, but you need to reverse the seal. you should be able to unscrew the end, remove the sealing rubber and a plastic fitting that pushes on the valve, replace them the opposite way around ,and they will fit the presta.
Since you've let the air out of the shock you need to go to a Bike Shop for a refill anyway because a normal pump doesn't reach the pressures supplied by a shock pump. While you're there, have them set the bike up for your preferences and instruct you in shock operation.
Several scenariosto consider here. First of all the compatibility with the hub. Second is the deraileur tarvel and the actual shifter. Components are normally matched in sets from factory and do not transfer over unless the entire set, shifter, deraileur and sprocket. Then there is the issue of chain wear fitting the crank and new hub together. Chains and gears seat into each other as they wear so a crank set should stay with the original hub as well, even if you were to install a new chain the wear pattern would be different. So the short answer is unless the brands all match and are in new condition and the hubs are the same thread and diameter, you will not get good results
When you remove the tires while changing inner tubes, do you run your fingers through the inside of the tires to check for thorns, wire, nails or other debris before replacing the tubes? Also, check to make sure your rim strips are adequately covering the spoke nipple holes in the rim. Sometimes just a little bit of a hole left unprotected can damage a tube. Lastly, sometimes you will just get bad tubes. It happens.
A tool that is like a socket goes in the center of the gears. And keeps the sprocket from spinning
And a special wrench slides over the out side gears grips gears.
Then centrifugally forced the sprocket will unscrew clockwise.
You sort of need those tools.
Or if you are good with tools. One can be made.
Dear Doug,
to lock a hand pump onto the valve stem: 1.depending on valve type-loosen the valve lock for presta, twist off valve cap for schrader.
2.unlock the pumping handle from the pump so that you can actually "pump" the pump...
3. put the pump head on the valve of the tire, then pull up on the thumb tightening lever. This should squeeze toghether the internal rubber gasket of the pump, and lock on to your valve.
4. Begin pumping.
5. when desired pressure has been reached, push down on the thumb lever to unlock the pump. Remove it.
Good Luck Fellow bicyclist!
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