Question: What Is Chain Line On A Bicycle?

What is the purpose of a chain line?

Chain line gauges helps determine effective chainline of the front and rear gears. The tool references off the rear sprocket center and extends this line forward toward the front rings. To use the (discontinued) CLG-2 chain line gauge, begin by checking the centering of rear wheel in frame.

What do you mean by chain line?

Chainline is the angle of a bicycle chain relative to the centerline of the bicycle frame. A bicycle is said to have perfect chainline if the chain is parallel to the centerline of the frame, which means that the rear sprocket is directly behind the front chainring.

What is a 50mm chain line?

as you can see, the front ring is 50mm from the middle of the bike (aka, a 50mm chainline). a standard rear end is 135mm between the droputs, meaning that each drop out is 135/2 = 67.5mm from the center of the bicycle.

How do you align a bicycle chain?

To check alignment with the largest cog, rotate the pedal forward and push the rear derailleur so that the chain shifts to the largest cog. If the pulleys take the chain beyond the largest cog, screw the low adjuster inward until this stops. Reattach the cable and tighten the clamp.

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What are types of lines?

There are many types of lines: thick, thin, horizontal, vertical, zigzag, diagonal, curly, curved, spiral, etc. and are often very expressive. Lines are basic tools for artists—though some artists show their lines more than others.

What are alphabet lines?

The Alphabet of Lines is a list of line symbols that engineers use in technical drawings to communicate specific shapes, sizes or surfaces. In the Alphabet of Lines, thick, dark lines represent the outline of an object, showing its visible surfaces and edges.

What does 52mm chainline mean?

What is chainline? Chainline is the distance between the centerline of your frame and the average centerline of your chainring(s). Unfortunately, if you were to remove these rings and install a standard narrow-wide ring the resulting 1X chainline would be about 52mm.

How is Q factor calculated?

Q factor is the overall width of an installed crankset, measured parallel to the bottom bracket shell from the outside of one pedal insertion point to the other. You can think of it like this: the larger the Q factor, the farther apart your feet will be.

How much clearance do you need between chainring and chainstay?

We don’t like to go less than 3mm clearance between chainstay and chainring, and you can contact the bike frame manufacture to see what their frames allow for chainring clearance and chainline.

What is Q factor bike?

Essentially Q-Factor is the distance between the pedal attachment points on the crank arms, also referred to as Tread. It could also be described as the width of your crankset. This affects your stance, if you’ve ever been snowboarding think of it as the same thing, essentially the distance between your feet.

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What is the difference between boost and non boost crankset?

The NDS cranks are identical… they are labelled M640/M645 its basically only the spindle that changes. You can get away with running a non boost chainset on a boost frame but the chainline will be slightly off. Actually, it’ll be better. The boost chainline shift is about clearance, rather than improving chainline.

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