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Mountain Bike Chain
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The crankset on a mountain bike is a valuable part when choosing what bike to buy or just upgrading your current cranks. Most all off road bikes come with either two or three chain rings as part of the cranks. You will find that most all of these bikes on the market come with three chain rings as part of the cranks.
Cranks that come with three chain rings most likely come as 22, 32 and 44 teeth with the ring with the least amount of teeth closest to the bike frame and the ring with the most amount of teeth near the crank arm. On the other hand, someone who rides a mountain with the intent of racing and therefore owns a cross country bike, will most likely buy a double crankset rather than a triple. With a double crankset there is a lot less shifting and therefore you can put more focus on the race. You can either buy this type of crankset as a 42/30 or as a 40/28.
For someone who is looking to race off road and is tooling to save as much weight as they can while still being able to have enough gear ratio's, then a double chain ring is a great way to go.
A lot of guys that I ride with from time to time have a triple on their bikes and therefore have plenty of gear ratio's to choose from.
I competed in a race this past summer and my bike came standard with a triple and with parts of the course that I had to use my small ring and then shift to my big ring each time on the flat areas made for a lot more shifting than I wanted to. But for someone who needs a lot of different gear ratios for different types of terrain, then a triple crankset would definitely be the way to go!
No matter what kind of crankset you have on your bike, be sure that when you're chain is not in too much of a diagonal meaning that if you are in your big chain ring, you shouldn't be in your biggest couple of cogs. Also, when in your small chain ring, you shouldn't be in your smallest couple of cogs.
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How To Use A Chain Tool in Mountain Bike
Once your mountain bike chain becomes damaged, you should immediately replace it with a new one. It is possible however, to repair a broken chain using a chain tool. For this very reason, most mountain bikers travel with a chain tool.
Your chain has three basic components - the metal side plates, the rollers between the side plates, and the rivets, or pins which go through the rollers and help to hold the plates together. These pins allow the rollers to freely turn as the chain
moves around the cogs.
If your chain happens to break, you'll need to remove the broken link and replace it with a spare link. To do this, simply reattach the two ends of the broken chain and ride on a shorter chain until you can get it replaced.
To remove a broken link of chain, place it in the chain tool. Now, turn the tool counter clockwise until the rivet pin of the chain tool touches the chain rivet. Continue to turn the tool until the pin pushes out of the roller. Be very careful, as you want to stop turning when the pin is right at the edge of the roller, before it moves through
the outer side plate.
Now, turn the tool in the other direction, and back it out of the roller. Set the tool to the side, then work the chain very gently from side to side and extract the inner side plates and roller.
Now is the time to re-route the chain through the bike. You may want to have a chain retaining tool or some to help you hold the chain in the right spot as you route and repair it.
Now that the broken link has been removed and you've re-routed the chain, you're ready to insert a new link or simply connect the links that were beside the broken one. The process here is the same - align the two ends so that the link with
the inner side plates will fit inside the link with the pin and outer side plates. Now, use the chain tool to push the pin inward until it's positioned evenly between the side plates.
The easiest way to learn how to do this or feel comfortable doing it is to have someone show you, then actually practice with a chain and a chain tool. You'll have no trouble at all making a temporary repair in a mountain bike chain once you've seen it done by a professional and practiced it yourself a few times.
About the Author
Amanda is very passionate of sharing and writing articles that help others. She is also very loved watching TV Shows and Movies. While on spare time, she loves to read many books and she loves cooking very much.
About mountain bike chain wheel.?
My original chain wheel rings ( 3 rings ) on my bike are 48/38/28. My chain wheel is busted so I need to get a new or a used one. Can I use less teeth or more than the original.
many chain wheels on yahoo auction has the specifications
42/32/22 or 46/36/24 or the like. I can't find a chain wheel that has my original teeth of 48/38/28. Can I use chain wheels that
has less or more teeth or will it be difficult to pedal, change gear, bad for the chain ? I use only the largest chain ring ( 48 )
anyway ?
I would be thankful for same good advice.
You can use smaller rings, but since you say you only use the big one, a smaller ring will slow you down. if you only use the big ring, you could easily drop down to a 46 without much problem, but a 44 will become noticable.
You'll need to figure out what the bolt circle diameter is. This should be stamped on the ring you have. There will be two numbers separated by a / or -. One will be the number of teeth, the other will be the bolt circle diameter, unless it's a really cheap crankset. Then you'll need to actually measure it.
take off the ring
lay it down on piece of paper
mark the center of each bolt hole
move the ring
draw a circle using the center points
measure the diameter of the circle
You won't need to readjust your front derailler unless you go with a bigger big ring or a smaller small ring. Since you sound like you only plan to replace the big ring, you'll need to go to a webretailer, most likely. Try www.pricepoint.com, or type "48t chainring" into google.
Lance Armstrong in race to preserve reputation
Lance Armstrong in race to preserve reputation
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