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| *Vultures Knob>>>Mountain Bike |
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. The only thing you have to worry here is that you may need to shorten your chain in order for your derailers to work properly. Just bring it to a bike shop to do it . It's certainly the way these days to have smaller chain rings up front. This is to promote pedalling at a higher cadence which is more efficient. You can add different sized rings but you'll need to: a) adjust the position of your front mech b) take a couple of links out of your chain c) when you replace chain rings you'll need to replace your chain AND cassette as the chain will slip. Buy whatever works. Someone else decided how many teeth the bike had. YOU decide what you want. As long as it fits on the bike, use it. |
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