Table of Contents
Are all freehubs the same size?
7 and 8 speed freehub – old standard 7 speed freehub is about 5 mm narrower, but all the old 7 and 8 speed cassettes will fit both 7 and 8 speed freehubs.
How do I know what size freehub I have?
Higher-end SRAM 11-speed drivetrains use a special XD freehub but the more affordable SRAM 11-speed groups use a normal HG freehub body. A simple way to tell is to see whether the smallest sprocket on the cassette has 10 or 11 teeth. If it’s got 10T, you need an XD body. If it’s 11T you need HG.
How long is an 11 speed freehub body?
Without spacers, the freehub is just shy of 37mm (no accurate calipers on hand).
How wide is a 7 speed freehub?
Cassette /Freewheel Spacing
| Brand and model | Center-to-center Spacing | Total Width |
|---|---|---|
| 7-speed | ||
| Shimano HG 7-speed | 5.0 mm | 31.9 mm |
| Shimano IG 7-speed | 5.0 mm | 32.4 mm |
| Sachs 7-speed | 5.0 mm | 31.8 mm |
What is a standard freehub body?
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 10 and 11 speed cassettes the same width?
11 speeds. Sprocket width is the same as for 10 speeds, so 10 speed sprockets can be used, provided that 11 speed spacers are used. Sprockets are 1.6 mm thick, spaced at 3.74 mm (road), or 3.9 mm (MTB).
What is my hub width?
If you are unsure of your frame spacing or have an older bicycle, measure the hub width to ensure a proper fit. To do this, remove the rear wheel and use a pair of calipers or a ruler to measure the distance between the inner surfaces of the dropouts.
What is my bike hub width?
How do you measure the length of a hub?
Measure the hub length The hub length is the measurement through the middle of the wheel (or hub) measuring from end point to end point (or bearing to bearing). You’ll want to make sure to measure through the center of the wheel and not just the outside as there will be space in your rim that will go unaccounted for.
What freehub do I need?
Knowing What Freehub You Need Determine the brand: Locate the brand of your existing cassette—most likely it is Shimano, SRAM, or Campagnolo. For a Campagnolo cassette, choose a Campy freehub. For a Shimano freehub, count the number of gears on the cassette.
How long is a 10 speed freehub?
Freehubs
| freehub | splines | body length |
|---|---|---|
| Shimano 10 sp (alloy) | 9 deep | 35 mm |
| Shimano 10 sp (steel) | 9 shallow | 35 mm |
| Shimano 8/9 sp | 9 shallow | 35 mm |
| Shimano 7 sp | 9 shallow | 31 mm |
Can I replace a 7 speed freewheel with 9 speed?
Basic answer is, it’s not worth trying. A seven speed hubshell is wider then a hub with 8, 9, 10 speeds, and a 8 9 10 speed freehub is wider then a 7 speed. If that makes any sense. lf you did put a freehub that accepted 8 9 10, you would need to re adjust the hub spacing so the wheel would fit in the frame dropouts.
What is PCD on hubs?
What does PCD mean? PCD is short for Pitch Circle Diameter, which is the diameter of the circle that passes through the centre of the bolt holes or studs on a hub or drum. This is the same as the mounting holes on a wheel rim.