how to air up a mountain bike tires?
594289
You need a bike pump.  I use the foot pumps theyre the best for me.  Just attach the valve on the pump to the little valve (with the cap off) on the bike tire and pump.  Easy.  ;]  Bike pumps are like 20 bucks or so.  Maybe less.  Check Target.
1096154
use a pop bottle quarter fill wth water, and seal with a rubber cork(one with a hole in the middle this is where you put your compressor attachment)  add fins to your bottle just like a real rocket\n\nuse a half pipe as a ramp and angle it a 45 degrees ataach the compressor to the bottle and turn on.  when the air pressure gets high enough the cork will shoot out and the rocket will fly.  try different amounts of water and change the angle
1101069
You can try Muratic Acid ( dilute 4 parts water with 1 part acid )\nMix in a 5 gal bucket , pour on tire marks then scrub with a stiff bristle broom and hose off . That should do it but do not breath the vapors , I recommend wearing a protective mask ( available at your local hardware store ) .
1114185
http://bikeflat.com or ask me. i can tell u how to do some tricks.
479902
an exercise bike or treadmill
1035603
Make sure to wear a helmet and shoes.\n\nStart at a slow speed. You will pick up speed as you go. Pull up on the handle bars and at the same time do a strong pedal. Be careful not to pull over.  Make sure you are standing up. Any fat tire (mountain bike type) would do. The higher the handle bars the easier. Once up, try not to pedal too fast, just fast enough to keep the front end up. The more you practice, the further you can go. Try to compete against your friends.
305007
put ur curson on it, drag it to to the bottom
397410
use a CD and the top of a soda bottle (both the cap and the very top) glue the cap to the CD (you need a VERY small hole in the cap) and put the balloon on the very top of the bottle, use that to blow the balloon up
128489
either a spring/shock combo or coilovers.  be careful that the tires don't rub too much.
590441
you can do it but you need a air compressor that can handle the pressure.  that little one will not and the ones you need will cost around 10 grand
688363
Learn how to horse-hop. Rolling at a slow speed, standing on the pedals; in one fluid two step motion: crank into a high wheelie, put your weight on the back tire for a split second, then jump up off of the back tire pushing the handlebars up and forward and lifting your feet as high as you can.\n\nLifting and pushing on the bar is what keeps the pedals on your feet (try lifting the bike like this a couple times while standing next to it to see how it works).\n\nYou should be able to get at least a foot or more off of the ground with a little practice. The trick is in weighting the back tire and then jumping off of it.\n\nNow: Take this technique with a little more speed to some small jumps and shock yourself. With the right timing you can go ridiculously high off of very small things.\n\nWith bigger jumps this technique is not necessary or possible but your body motion is very similar so this is a good place to start.
981260
well you don't NEED to change out your fork, you can do a few things. If your fork has air assist you can lower your psi, also look into getting new springs and a lighter weight oil. I suggest going to you local bike shop and tell them the problem your dealing with and see what they can do to help you...worst case buy a new fork that can be fully tuned to get the feel your looking for.
474162
I am not trying to be a smart a** when I say this but if you dont know how to even get the bike up to take the tire off you might want to let someone else do it. You do not want any problems with the tires while screaming down the road.
809340
Wider tires have more volume and thus can be run with less pressure, giving you a more comfortable ride and more grip over rough terrain. \nA wider rim will make your tire body bigger = more volume, but that is only recommended with tires from 2.2in. If you run narrow tires on a wide rim, chances of your tire coming off the rim while riding are up, which you don't want to happen\n\nSo if you are only cycling to work, I recommend standard width rim with 2.0 - 2.2 in tires. run those at a pressure of 1.8 to 2.4 bar, depending on how much you weigh.
370242
I assume you are talking about a 'square' (ram air) type.\n\nBasically you will need to pull it to get the ribs inflated then keep it orientated into the wind (should do that itself). Pulling the risers gently should cause it to dip ... too much and it will (like a real one) wrap itself up.\n\nEnjoy.
732007
I have made 2 liter bottle rockets using water, a tubeless tire valve, a bicycle pump and a 2 liter bottle.  It goes about 100 feet up if you do it right.
349789
Stand the bike up with plenty of open space either side. Take 50 steps back from it and then run hard towards it. Using your skill and judgement, determine at what point you should become airborne, taking into account important factors such as windspeed and sheer, ambient temperature and the sharp bits of the bike that might snag on your goolies. \n\nAs you fly over the bike reflect on the fact that you have just jumped it successfully.