Selasa, 20 Oktober 2009
Advice on Buying Bottom Brackets
Executive Summary about Advice on Buying Bottom Brackets by Bonthrone Bikes UK
Bottom bracket, frame and cranks must all be compatible in order to work properly and efficiently.
Different Types of Bottom Bracket - Types & Compatibility
1. BMX style 3 Piece Crank/Bottom Bracket
3 piece cranks are usually supplied as a tough axle, chrome molly cranks plus and bottom bracket.
2. Square Taper
Square taper bottom brackets and cranksets used to be standard. A bottom bracket bolt hold the crank in place.
3. Hollowtech /RaceFace
Shimano Hollowtech II & RaceFace X-Type Bottom Brackets, designs are the newest mountain biking components that are lighter and give more strength than older bottom bracket designs, normally bought as a complete crank and bottom bracket set with the axle fixed to the drive side crank arm, has large bearings which have a longer life.
4. Octalink
Octalink Bottom Bracket/Crank System, is Shimano's own splined crank bottom bracket system. Compatibility: with a few exceptions Shimano are the only cranks that will work with Octalink bottom brackets.
5. ISIS
ISIS (International Splined Interface System) Bottom Bracket System, is the standard for splined bottom bracket and cranksets.
A bottom bracket must be compatible with your frame - ie the bottom bracket shell size must match that of your frame. The bottom bracket shell is the hole in the frame where the new bottom bracket will sit.
Thankfully most mountain bike frames have a standard diameter threaded bottom bracket shell. Shell sizes for mountain bikes are either 68 or 73mm in length. Some Dirt jump mountain bike frames come with non-threaded BMX style bottom bracket shells.
There are two types of road bike bottom brackets - the Italian Style or International Style. Italian style bottom bracket threads are found normally on very high quality Italian made road race frames. International Thread is the same diameter as a standard 68mm Mountain Bike Bottom bracket.
Mountain Bike Riding Secrets You Should Take Into Consideration
Executive Summary about Mountain Bike Riding Secrets by Cnceptz.com
If you want to make your riding adventure more enjoyable you need to be well ready for riding. Here are mountain bike riding secrets that will be specially useful for learner.
1. Any rider should have right equipment, such as a mountain bike helmet and even if you don’t get another accessory, make certain you don’t skimp on your helmet.
2. Any rider should have mountain bike gloves.
3. Padded cycling shorts are also good due to that they will enlarge your comfort on the bike for those long rough rides.
4. Bear in mind that the type of mountain bike you ride needs to be designed for the kind of riding you are going to do.
5. While you are riding on dust, mountain bike tires need to be knobby not skinny as this ensures traction on rugged terrain.
6. The mountain bike should be checked frequently and any repairs made that are necessary before you take your mountain bike out for a ride.
The truth is that a ready mountain bike rider will have a bike that works well and fits well. Do your part to protect and enhance the mountain biker’s access and image by observing the following rules:
1. Follow all of the rules since they were designed partly for your safety.
2. Don’t damage our ecosystem.
3. You should ride only on open trails. Closed trails are closed for a reason and riding on one is banned.
4. You need also to pay attention to the dirt under you.
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