What combinations on a 7x3 would be cross chaining?

You will receive a “Bike Owner's Manual” if you buy bicycles of reputable brands. If you do not have one, just google “Bike Owner's Manual” to find one.

If you take a look at page 6 of “Bike Owner's Manual” supplied by Apollo, you will see a diagram on “Recommended Chainwheel/Rear Sprocket Gear Combinations”


Chain crossing will wear out your chain and damage your drivetrain sooner than it should. So, avoid setting your gears so that your chain sits on the chainring and sprocket as marked “X” on the diagram.

Customers who buy bicycles with gears from Jom Johan will be given a chart to advise how gears should be used for efficient cycling and to prevent drivetrain from being damaged any sooner than it should.