Hubs need to match the frame or fork they are used in.
The spacing of a frame/fork is measured from the inside surfaces of the dropouts, where they come into contact with the locknuts of the wheel’s axle
.
What size MTB hub do I need?
The standard MTB rear axle dimensions are 135x5mm (for a QR rear hub) but jump and gravity bikes may use wider and thick axles for extra strength and stiffness, with the available sizes being
135×10, 142×12, 150×12, 157×12 and 165×12
. Ensure your rear hub is the correct size to fit your frame.
What is hub width on a bike?
Hubs are generally
100mm wide in front and 130mm wide in the rear
for road bike frames; mountain bikers generally use 135-142mm front and rear hubs to allow space for disc brakes, which require extra material on the outer edge of the hub for mounting the disc.
What is bike hub spacing?
Front hubs moved to a
15X100mm thru axle for the front, and a 12X142mm thru axle for the rear
. This is what we still refer to as “standard” spacing. Right around the same time that thru axles became the norm for mountain bikes, disc brakes became more prominent on cyclocross bikes.
How do I know my bike hub size?
- Figure out the distance between the lock nuts (where the hub sits in the dropouts) – 100 or 110 mm is typical for the front. …
- Take that number and divide by 2.
- Then measure from the flange to the lock nut.
How do you measure hub size?
Measure across the middle of the wheel hub to get the diameter
. The wheel hub bolt pattern is the number of bolts lugs on the hub and the diameter of the circle in which they are arranged.
How do you measure a rear hub on a mountain bike?
How do I choose a hub?
What is boost hub spacing?
As for the specifics, Boost has a front hub width of 110 x 15 mm and rear hub spacing of
148 x 12 mm
that results in increased wheel strength on all wheel sizes as well as added design flexibility. Full Speed Ahead has definitely noticed significant improvements in wheel strength and stability in Boost wheelsets.
Can you use road hubs on MTB?
A road frame built for disc brakes is engineered for a hub with an O.L.D. of 135mm and
can therefore operate with a basic rear MTB hub
.
Can I use MTB hub on road bike?
Yes you can, but they won’t fit on most road or CX frames because the dropout spacing is different
. Wheels will build fine, no problems, but getting them on the right bike might be a different story.
Do you need boost spacing for 12 speed?
If you are running 12 speed, the clearances are so small between chain and cassette that
you MUST run a boost spaced chainring with a boost spaced bike
. If you don’t, the chain will “tick” on the next bigger cog when in the smallest 2-3 cogs on the cassette.
What is boost spacing on MTB?
Boost spacing
allows for wider hub flange spacing
, which correlates to better spoke bracing angle and dish when building wheels (this makes the wheels stronger). The brake rotor sits 3mm outboard of where it did before, as does the rear cassette.
What is hub size?
The outer diameter is the hub bore, while the inner diameter is the diameter of the vehicle hub itself
. For example: a hub-centric ring size of 73-67.1 would mean that the wheel center bore is 73 mm wide and the vehicle hub is 67.1 mm wide.
How do you measure a hub flange?
Do bike hubs make a difference?
Hubs that are “louder” usually have more engagement points
. This means your drivetrain picks up faster, so less energy is lost. Hubs that have sealed cartridge bearings or needle bearings usually never need to be replaced, they’re far stronger and stay cleaner.
How do I change the hub on my mountain bike?
What is the purpose of hub?
A hub (also called a network hub)
serves as the point of connection for all devices on a local area network (LAN)
. Hubs operate on Open Systems Interconnection (OSI) Layer 1, the first and lowest layer (also called the physical layer).
