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Crank Tech Help

 

1. How do I install my cranks?

To see detailed instructions of the crank installations, click on a link below. Adobe Acrobat Reader is required to view these instructions.

2-pc cranks

3-pc cranks with American Bottom Bracket

3-pc cranks with European Bottom Bracket

3-pc cranks with Spanish Bottom Bracket

Click on image for a free download.

2. How do I know if I have a one piece or a three piece crank?

Just as the name implies, a one piece crank consists of a single cast or forged piece of steel that comprises both the crank arms and spindle. Three piece cranks consist of two individual crank arms and a spindle and are made from a variety of different materials. Three piece cranks generally are stronger than one piece cranks.

3. What are the different crank lengths and how do I determine what length I need?

Cranks come in a variety of different lengths ranging from 135mm up to 190mm. In general, the taller you are the longer the crank arm you may need to use. The two most common crank lengths are 175mm and 180mm. To see what size crank you need Click Here.

4. What size pedals do I need for my cranks?

All one piece cranks use 1/2 inch pedals. All two piece and three piece cranks use 9/16 inch pedals.

5. How do I determine what style bottom bracket my cranks have?

Bottom brackets are available in four different styles. These are European, Spanish, Mid and American. To see the different style of bottom brackets, Click Here.

 

 

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