Is the chainline on a bicycle a matter of opinion?
The worse the chainline, the worse the mechanical efficiency of the drive train, though research has shown the loss to be minor, at least with modern, flexible chains. “Correct” chainline for a derailer system is a matter of opinion, and depends on the intended use of the bicycle.
Can a chainline mismatch cause a bicycle to shift?
In the case of derailer geared bicycles, the chainline is not perfect in most gears. Chainline mismatch can cause the chain to rub against the side of an outer, larger chainring when engaged with a smaller one, and can cause problems with shifting, especially with the front derailer.
How do you change the chainline on a bicycle?
Front chainline may be adjusted either by moving chainwheels, or by moving the crank (s) — also affecting tread, symmetry of the pedals around the bicycle’s centerline, or both. The list below covers all options, starting with the simpler ones. For a single chainring, you can add spacers between the chainring and the crank spider.
What does chainline mean on a singlespeed bicycle?
Chainline on Singlespeed/Fixed Gear Bicycles Chainline with an Internal-Gear Hub The word “chainline” refers to how straight the chain runs between the front and rear sprockets. Ideally, both sprockets should be in the same plane, so that there is no sideward motion or stress to the chain.
When is it time to change your chainrings?
With extreme wear, your chain can slip from one ring to another or you may experience “chain suck,” where the chain doesn’t release properly from the teeth on the chainrings, and the chain can get jammed. These are all signs that it’s time to replace the chainrings.
Which is the correct setting for a chainline?
Chainline refers to how straight the chain runs between the chainring and sprocket, a perfect setup involves a chainline between chainring and sprocket being on the same line.
How can I increase or decrease the chainline?
Alternatively if you replace the bottom bracket with a shorter or longer model you can adjust the chainline, for example one that is 4mm shorter will decrease the chainline by 2mm on drive side and 2mm on the non-drive side, replacing the BB with one that is 4mm bigger will increase the chainline etc.
What happens to the chainrings on a bike?
A key component of your bike’s drivetrain, your chainrings can become worn over time. They’ll start to look like shark fins and you’ll notice wear in the opposite direction of chain travel.