Are 6 and 7-speed freewheels interchangeable?

If your bike currently has a regular-spaced 6-speed freewheel, you can generally upgrade to 7-speed with little trouble. Since the sprockets are closer together on a 7-speed freewheel, the overall width is only very slightly wider than a regular-spaced 6-speed.

Are all freewheels the same?

Freewheel Threading All recent freewheels and threaded hubs, regardless of where made, use ISO threading. The older British and Italian standards use the same thread pitch but a very slightly different thread diameter, and are generally interchangeable.

What do freewheel numbers mean?

They are referred to as 11-23, 11-32, and so on. The first number is the total number of teeth on the smallest sprocket while the second is the total number of teeth on the biggest one. Combined with the number of gears, the teeth ratio determines the type of terrain a cassette is ideal for.

Can I use a 7 speed shifter on a 6 speed cassette?

Re: Can you use a 7 speed shifter on a 6 speed cassette? The “numbers” say they don’t match. The cable pull of a 7 speed is less than a 6 speed so, though a couple of cogs might work, the rest will gradually not. You’ll never know if you don’t try it.

Can a 6 speed derailleur work with a 7 speed cassette?

So yes, a six speed rear derailleur will work correctly with 7, 8 or 9 rear speed systems.

How do I know what Shimano freehub I have?

Knowing What Freehub You Need

  1. Determine the brand: Locate the brand of your existing cassette—most likely it is Shimano, SRAM, or Campagnolo.
  2. For a Campagnolo cassette, choose a Campy freehub.
  3. For a Shimano freehub, count the number of gears on the cassette.
  4. For a SRAM freehub, count the number of gears.

Are all freewheels the same size?

Freewheels are available in sizes 13T to 28T and in the same two different widths as the cogs (3/32″ and 1/8″).

Are cassettes and freewheels interchangeable?

No, freewheels are completely different from the cassette / free hub system and are not interchangeable. A freewheel includes the ratchet mechanism that allows the sprockets to rotate backwards as well as the sprockets themselves, and threads into the hub.

Can a 7 speed derailleur work on a 6 speed?

Shimano derailleurs marketed as 7, 8, 9 speed (and in addition, 10 speed road), can be interchanged in any of those speed drivetrains.

What is the difference between a freewheel and a cassette?

What is the main difference between freewheel and cassette hub? The freewheel is a single-unit and the act of pedaling tightens the freewheel to the hub. Whereas the cassette hub is a set of gears (cogs) that slides onto a cassette and is held in place by a lock ring.