Exceptions to 3/8×24 for coaster axle threads?
5 min read
Asked by: Jeff Caspers
What is the thread pitch on my thru-axle?
Thru-axle complications
The thread pitch on a thru-axle may be 1.0mm, 1.5mm or 1.75mm. A coarser thread means that it takes fewer turns to remove the axle, so wheel replacement is faster.
What is the diameter of a Bicycle axle?
Diameters for front thru axles include 20 mm, 15 mm, 12 mm, and 9 mm. Rear axles typically have diameters of 10 or 12 mm. Most thru axles are found on mountain bikes, although increasingly disc-braked cyclocross and road bikes are using them.
What thread are bicycle axles?
8 Answers
| Nominal Thread Size | Example of Bicycle Uses |
|---|---|
| 9mm x 26 tpi | Front hubs, Campagnolo® |
| 3/8 inch x 24 tpi | Some solid axle bike, including coaster brake |
| 3/8 inch x 26 tpi | Solid rear axle |
| 10mm x 1mm | Most quick release rear axles, derailleur mounting bolts, brake lever adjusting barrels |
How do you measure a BMX axle?
For a front thru-axle, this is measured from the inside to inside of your fork. For a rear thru-axle, this is measured from the inside to inside of your frame at the drop-outs.
What is the most common thru axle size?
The most common front thru axle OLD dimensions are 100 mm, 110 mm, and 150 mm for front axles and 130mm, 135mm, 142mm, 148mm, and 197mm for rear axles. To accommodate both OLD sizes and dropout sizes, there are over 40 different thru-axle lengths on the market today.
Can I use quick release to thru axle?
Quote from video: That allows you to use a quick release skewer. On a thru axle. Wheel. It works very simply i know some other brands make these basically all that you have to do is slide this adapter into the hub.
How do I know my axle size?
Hook your tape measure on the outside of the hub where your rim touches your hub. Measure across your axle to the exact same spot on the other side. Do not measure to the back side of your hub.
How do you measure axle diameter?
Quote from video: This flat spot right here is your hub face you'd measure from there all the way to the other side to your hub face and that would give you the two measurements you need to order the correct axle.
Are all through axles the same?
That information is good, but it’s not all that we need. Thru axles vary in length, width, seat type (is the end cone-shaped or flat?) and thread pitch/length. It screws directly into the frame or fork, so the thru axle has to have the right distance between threads (thread pitch) as the bike.
What is the standard thread size on a bicycle pedal?
9/16″ x 20 threads
Bicycle pedals are commonly a 9/16″ x 20 threads per inch. The inside diameter of the internal thread (the “nut”) must be smaller. Measured in millimeters, the OD of the pedal is typically 14.2mm.
Are thru axles universal?
But things like dropout design, thread pitch and the overall length of the axle differ between makes, even with the same axle spacing, so thru-axles are not always cross-compatible between brands.
Is thru axle better than quick release?
1. Thru axles are safer– This is probably the biggest benefit for the average cyclist. Thru axles improve safety by making it nearly impossible for the front wheel to come out of the dropouts while you’re moving. The dropouts can’t lift off of the axles vertically because they have holes instead of a u-shaped slots.
Should you grease through an axle?
Although it is not required, it is recommended that you apply a light amount of grease to your Mountain Bike axles. You can apply it to the threads, and also on the base of the axles themselves. This not only makes them easier to install and remove, it also helps prevent rust and corrosion.
What does 12×142 mean?
12 mm is the axle diameter, 142 mm refers to overall shoulder to shoulder width of hub (end cap to end cap) Cassette and disc rotor are in the exact same relation to the hub’s centerline as a standard 135 mm QR hub.
How tight should my axle be?
How tight should my thru axle be? Typically, thru axles should be tightened to 12-15Nm (Newton Meters) of torque. This is just enough torque to secure the axle so it does not come loose while riding. You should never tighten your axle as tight as possible.
What size is a mountain bike axle?
Front thru-axle standards
The standard size for thru-axle forks on mountain bikes used to be 15mm x 100mm, with 20mm x 110mm used mainly on downhill and freeride bikes. For trail, XC and enduro bikes that’s largely changed to the newer Boost thru-axle standard, which increases the front axle length to 110mm.
What size axles do BMX bikes have?
The wheel axle of the BMX bike has two standard sizes. The front wheel axle of the BMX bike has a diameter of 10 mm. The rear wheel axle has a slightly larger diameter that measures in at 14 mm.
Are bike axles universal?
There is no universal thread size, which means you need to know the different bike axle thread sizes if you want to install a new wheel on your bike.
How do you measure a rear axle?
Quote from video: With the semi float a key you're going to take your tape measure from the outside face of the flange.
How do I measure my axle spline?
Quote from video: The end of an axle that slides into the differential or spool. When we asked you what your spline count is what we want you to do is count the number of peaks.
How do you fit through axles?
Quote from video: If you need to change the finished position of the lever. You can adjust the axle net if the axle nut has a retention cap use a small allen wrench to remove the screw and plate.