if my bike squeels upon breaking, what should i do to stop it.?
482230
in addition to long duck dongs responce if the brakes are still squealing after toeing in the pads, you may want to use a fine grit sandpaper and lightly rough up both the rim and brake pad. There could be residue left over from manufacturing on the brake pad which is creating the chatter.
192882
Sometimes new bikes need a little breaking-in (like shoes) so don't worry too much right now.  But if its a loud squeak then maybe the ball-bearings in the hub need some more lubrification.  \nIt could even be coming from the stem as well, as you get up out of the saddle you put more weight on the handle-bars the steering tube might be getting rubbed. \nIf you got the tools its easy to apply some lube but if not you should take it to a bike shop.\nAlso check the spokes to make sure they are all the same tension because the wheel could be flexing and rubbing the brake pads (maybe).\nGood luck.
343634
well u have ball barings were the handle bars conect to the the frame and u have them under neath, were the forks connect to the frame, u take a wrench, pop the nut of the top then you pull the th forks and the handle bar out away from ecother, but be careful, watch the way the barings are, so you dont lose them, then after you grease them you just put it back together the way it came apart.
131904
Have you turned it over? If so try a piece of plywood underneath.  That should stop the sagging...it might be a little more firm though.  Otherwise...replace it!
1104231
Pull it back up.  What else could I do?
710361
If your chain is streched, I would just get a new one.\nThe chain is already streched out, it won't last to long.\nBut like most guys I ride with they're lazy, so before you take the chain off, look and see how many links needs to come off by pulling the chain tight. You need a rivet remover to pop links off.
1173046
Put it up on the center stand so the back wheel is off the ground. \n\nStart the bike. Pull in the clutch, and put it in 1st gear. let the clutch out slowly. The bike is now standing there with the back wheel turning. \n\nHold the oil can spout over the moving chain and spray a steady stream of oil for a short while to make sure the whole chain gets oiled.
199885
Even though everything seems tight, it's probably the bottom bracket.  With the cartridge-style bottom brackets, it's easy to think they're installed tight.  But until you put a significant load on them, they won't make a noise.\n\nYou can tighten the bottom bracket yourself if you have a crank removal tool and a bottom bracket tool.  One of the reasons that the bottom bracket doesn't get installed tight enough is that it doesn't want to turn freely in the shell.  When you remove the bottom bracket, clean the threads really well and re-install using a liberal amount of grease.  Of course, if this is all too much for you, take it down to a decent bike shop and ask them to tighten up the bottom bracket.
1128278
Get thee to a bike shop.  Get fitted.  Ride safe!
334981
scream oh sh/it and then go to the doctor if its broken.
101942
Well, there are several factors that might change this answer.  How much you ride, how hard you are on your bike, and if you leave your bicycle outside in adverse conditions (as the rubber will wear faster)?\n\nPretty much when you see the rubber getting thin, time for new pads...
574316
Don't! \n\n.... or you'll be finding the money for a new wheel and a new freewheel!\n\nGo to a bike shop - they may do it for free or for the price of a coffee.
277053
Get some WD40 and spray em down if they are squeeking or or not moving so well.  Get em moving again and work out the gunk with a rag.
710280
--Put the chain back on the quad.\n--Apply the R brake - that will keep the F sprocket from turning.
458981
Always ALWAYS head for the smoother path (obviously). Stay low, and keep your butt about two inches off the seat instead of more. Keep pedaling if you aren't in danger's way, and brake lightly when you are. Coordinate every move 10 seconds before you get there - it's hard not to get wrapped up in the "Oh damn! That's gonna slow me down!" attitude. Let it flow, but make sure the faucet's on full blast. When I rode, I had a knack for downhill, because I didn't worry at all about busting my butt or breaking any bones...I know that can be bad, but it will hinder you to a certain degree. Good luck!
362202
Lift the bike above your head with one hand and apply the oil with the other while using your head to rotate the pedals \n\nImportant safety precaution: Wear goggles to keep oil splashes out of your eyes and a crash helmet because the pedals keep hitting you in the back of the head and then you drop the bike.\n\nEasy!!
499264
In general...\n\nIf it's an aluminum frame, trash it. If it's carbon, trash it. If it's an older steel frame, depending on how bad it is, you could possibly straighten the frame by taking it to your local bike shop (a reputable one, not somewhere like Performance Bike) and have them cold set it. Ideally they'll have a frame table as well to get everything perfect.\n\nIn your case, it sounds like you either have a problem with your forks, or the front end of the bike is twisted. You're pretty much outta luck here. Time for a new frame.\n\nGood luck!