why does my bike chain slip ?
346396
The chain could be loose or your gears need adjusting. You should take it down to your local bike shop and ask them to fix it for you.
992106
It is opposite the direction the bicycle is moving
169123
If the bicycle is older, or has been used extensively, the chainring(s) (i.e. the large circular piece to which the pedals are connected) may be worn and in need of replacing (which can be expensive -- can you see the teeth of the chainring poking out of the top of the chain?).  Or the chain may need replaced.  Or your front and/or rear derailleur(s) may need adjusted.\n\nTake you bike in for some service.
472691
There should be a barrel adjuster on your rear derailleur near the cable anchor bolt. You can either increase or decrease the cable tension as necessary by turning it incrementally. \n\nIf your chain seems to want to shift past the cog that you're shifting to, then your cable tension is too high. If it's not quite making it to the cog, then your cable tension is too low.
920087
to solve your problem with minimal work, just bring your bike into a LBS and they should have the tool to take it out, shouldnt cost you a dollar or two, they might just do it for you for free! \n\nCheers
436103
If you find out, tell me. I have the exact same bike and my chain just broke. I went to the local bike shop and they want $25 for the chain. They also said they probably woud recomment changing the front gears too, since both parts usually wear out at the same time. That's going to be another $50 with labor. Go to the Mongoose bike website, they might have the info on size there.
916364
The easiest way to do this would be to remove your chain. This will let you pedal and not go anywhere. You will have to find a way to make the bike stationary so you can keep your balance while you're on it. I suggest removing the front tire and building a stand to prop the front tire frame in.  Make the stand level with the back tire so it will be exactly like riding a bike when you are on it.
1125339
Good to know....I'll chain him to the bike racks next time.  Thanks for the heads up.
571014
So, If I understand correctly, your shorts are too tight and your bicycle has no chain!
172617
It happens because of  gyroscopic inertia or rigidity in space. It is due to the spinning wheel on an axle. The wheel, once spinning, tends to resist changes to its orientation due to the angular momentum of the wheel. However, on static bike, there is no such resisting force and you become victim of gravity!!
755299
I would guess you have a derailleur problem, freewheel or cassette it doesn't matter or make a difference.\nThe 1st thing to address would be make sure your tension bolt is adjusted to the proper tension.\n\nIf this doesn't work you may have to adjust your high and low adjustment screws which will adjust your pulleys with your top and low gear.\nThis is done by shifting to the lowest gear and turning the low adjustment screw or bolt so that the guide pulley moves to a position directly below the low gear and then repeat the process again using the high end adjustment bolt with your highest gear.\n\nAfter that try adjusting the adjustment bolt, it's on the back of the derailleur the one the cable runs through.\n1st put your bike on a stand and put your chain on the second smallest gear and turn the crank slowly, if your chain is touching 3rd gear turn the adjustment bolt clockwise until the chain noise is gone.\n If it's touching 1st gear then turn it counterclockwise until the noise is gone. \nFollowing the procedure should solve your problem.
587969
just keep practising. you will slowly get more used to it. find new ways to push the envelope. a tricky one is to turn somewhat tightly when going at a decent rate. you shift your weight to the right petal and lean the bike over. if you can get your speed and turning right, you may be able to touch your handle bar to the ground while your moving. i can get it down to about 6 inches. wee!
1171715
pick a gear where you dont have to pedal that hard, you want to use your body weight as a counterbalance...lean back and pull up your handlebars hard...after a few tries you will pedal longer.\n\nif you pull up too hard or lean back to far,your bicycle will flip out from under you..its all about balance...it doesnt come to you overnight but with work and practice you will know how hard to pull up and how far to lean back.
28070
wow, good job staying healthy with all those miles. Anyway, you don't have to. But riding that avidly could mess it up. When you ride over a mile in weather 40 degrees and below, you should grease once a month. In the summer you should be fine. \nThe only other time to grease you chain is when your chain falls off. Especially in cold weather.\nI don't think your incedent had anything to do with maintence, unless its cold. Maybe just your stock chain ( Stock I assume) was weak. Just make sure you do it when its cold and when it falls off and you'll be fine
1136402
The power transmission system in a bi-cycle is of chain type. The mechanism is as follows. The larger driving sprocket is driven by the motion of pedals. The roller-bush type chain connecting the driving sprocket and the smaller driven sprocket transmits power from pedal to the rear wheel. Due to the smaller size of the driven sprocket, the speed multiplication occurs ( the speed of rotation of rear wheel is larger than speed of rotating the paddle).\n\n[You may also note: A chain, like a power transmission belt, has a taut and a slack side. In usual conditions i.e. while going forward, the slack side is at the bottom and taut side at the top. If the direction of rotation of pedal is reversed, the top side of the chain becomes slack and bottom side is taut.]\n\nLet us come to the specific topic now.  While doing reverse paddle, the chain tends to drive the driven sprocket in opposite direction. The smaller sprocket is provided with "ratchet-shaped" teeth. So the chain and driven sprocket doesn't mesh but slips. Thus preventing any power transmission to the rear wheel. Thus there is no motion of rear wheel and hence the cycle cannot be driven backwards.\n\nLearn about ratchet from
556094
Friction is not a force... It just is... It only exists when two objects, or things are in contact with each other.\nIf a force is acting on an object to move it, friction acts in the opposite direction.. It's simple as that. Obviously if the force is not greater than the friction, the object will not move.\nSo the direction of friction is opposite to the direction of the bicycle's movement, so in the same "Direction" for both wheels.
1103168
In addition to the above answers, look at how the cable is routed - any sharp bends, or the cable not being seated properly in the levers will give you a hard time. If you raised the bars it will raise the cable housing with it, and it will now be too short and causing the brakes to drag or be inneffective.\n\nWhat type of pads did you replace the old ones with? If department store-type, you can't expect much from these. Get some decent pads from the bike shop and give it another go if this isi the case.\n\nThe brakes themselves may be adjusted too tight or corroded at the pivot point(s). They should easily move back to thier resting position if you squeeze them by hand.\n\nAlso, if you have linear-pull (or "v") brakes and a lever designed for sidepulls or cantilevers you can adjust all day and not get any better. Soemtimes, on department store bikes, these are mis-matched right from the factory and you'll need to get the correct levers for the brakes.