How to recognise a 6-speed freewheel compatible hub?

Asked by: Heather Johnson

Are all freewheels compatible?

All the current (since the year 1990) freewheel hubs are compatible with all the 6 and 7 speed freewheel sprockets. Freewheel rear hub with threads, and freewheel sprockets that are screwed onto it.

How do I know what model my freehub is?

Quote from video: The easiest way actually to tell is count the number of teeth on your smallest cog it'll be 11 or 12 feet if you have an HG driver. The less common of the two is the ceramic ski driver. It.

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 freehub bodies interchangeable?

Almost always, the answer is no, there is no interchangeability between different brands – and often limited interchangeability within a brand.

Are cassettes and freewheels interchangeable?

Although cassettes and freewheels perform the same function (allow you to coast when you stop pedaling) and look almost identical, they have significant mechanical differences and are NOT interchangeable.

Are Shimano freehub bodies interchangeable?

Most Shimano Freehub bodies are interchangeable.

What freehub does Shimano use?

HG, short for ‘HyperGlide’, is the most common and traditional freehub body design available. Created by Shimano, it is the standard used for cassettes that have at least an 11-tooth cog as the smallest cog on the cassette. HG Specific cassettes are available in 8,9,10, and 11speed options.

Are Shimano and SRAM freehub compatibility?

Modern Hyperglide freehub bodies will fit an 11-speed Shimano/SRAM-compatible cassette for road bike wheels. You can also use Shimano-standard cassettes with 8, 9 or 10 speeds, but will need to fit a 1.85mm spacer on the inboard side of the cassette to fit, plus an additional 1mm spacer for 10-speed cassettes.

Can I change my freehub?

You can either buy a new freehub body or if you’re lucky your local bike shop or bike recycling project may have a stash! Your replacement freehub body needs to have the same interface as your old one (meaning the same spline pattern) so it can fit onto your old hub.

Can replace a 6 speed cassette with 7 speed cassette?

SP – WRONG! 6 and 7 speed have different spacing, 8 is slightly different to 7 as well. If the bike is from post 1989 or so it will have a block not a cassette, and a cassette won’t go on the hub. If it’s a 6 speed cassette it may have a threaded top cog meaning a modern 7 speed cassette won’t fit either.

Can you use a 7 speed derailleur 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.

Are 6 and 7 speed chains the same?

Shimano, SRAM and Campagnolo all use the same chain with 8 speeds. The chain for 7 speeds is a bit wider – 7.3 mm, while a 6-speed one is substantially wider – 7.8 mm. That is why the reverse is not the case and a 7-speed chain and especially a 6-speed one will not work very well on an 8-speed system.

How do I know what cassette is compatible with my bike?

You can know what cassette to get for your bike by determining the teeth count on the largest sprocket and the smaller sprocket of your current cassette. For example, a size 12-25t cassette, which is standard to road bikes, has 12 teeth on the smallest cog and 25 teeth on the largest cog.

Can you put a freewheel on a cassette hub?

The cassette is then tightened to the hub with a lockring. In different, freewheel hubs have a threaded portion. The freewheel itself has threading on the inside and goes onto the hub like a nut. Consequently, it’s impossible to install a freewheel on a cassette hub because cassette hubs are not threaded.

How do you tell freehub from freewheel?

Quote from video: This tool fitting does not move when we spin the sprockets. Making this a freewheel system the innermost tool fitting here has four notches. It does not move when the spark could spin backwards.

Are 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.

Are bike Freehubs universal?

Though they may look similar, Shimano’s new 12-speed Dura-Ace freehubs and Micro Spline are different, and cassettes are not interchangeable across either system.

Are Shimano 11 and 12-speed compatibility?

A 12-speed chain can work with an 11-speed cassette. However, it’s recommended to avoid using a Shimano 12-speed chain because it doesn’t play well with 11-speed chainrings.

Are Shimano and SRAM freehub compatibility?

Both Shimano and SRAM 11-speed road cassettes require this longer 11-speed freehub body. Similarly, new Shimano 12-speed road cassettes will fit HG 11 freehubs. Left is the HG ‘Mountain’ freehub fitment. Right is the newer (and 1.85 mm wider) HG 11 version.

What freehub does Shimano use?

HG, short for ‘HyperGlide’, is the most common and traditional freehub body design available. Created by Shimano, it is the standard used for cassettes that have at least an 11-tooth cog as the smallest cog on the cassette. HG Specific cassettes are available in 8,9,10, and 11speed options.

Can you put SRAM cassette on Shimano freehub?

Buyers are free to use a SRAM chain and cassette with their Shimano groupset, and vice versa, just as a SRAM chain can be paired with a Shimano cassette, and vice versa. SRAM’s cassettes and chains are compatible with all of Shimano’s groupsets, and vice versa.