Double-butted spokes: These are lightweight spokes that are thinner in the middle (e.g going from 2mm to 1.8mm and back to 2mm again) to save weight and reduce ride stiffness, without compromising on wheel strength.
What are spokes in history?
The term originally referred to portions of a log that had been riven (split lengthwise) into four or six sections. The radial members of a wagon wheel were made by carving a spoke (from a log) into their finished shape. A spokeshave is a tool originally developed for this purpose.
Are there different types of spokes?
Spokes can be categorized into three categories: straight gauge, butted, and bladed. For the purpose of this article I am not going to go into aluminum or carbon spokes – just steel spokes.
Why are butted spokes stronger?
The strength of spokes varies depending on their materials. Steel is stronger than aluminum, for example, so we can say that butted spokes often have more strength than regular ones because they’re usually made from steel which has increased tensile yield stress (it takes more force to bend it).
What are triple butted spokes?
Triple butted spokes are thickest at the hub end, thinnest in the middle, and in between thicknesses at the rim. Triple butted spokes are mostly used in high load applications. But the center of the spoke being thinner makes the spoke springier and more resilient. It doesn’t point load at the end as much.
What are single butted spokes?
Butted spokes have at least two distinct diameters: single-butted (SB) spokes are larger at the elbow and smaller along the rest of their length, while double-butted (DB) spokes are larger at the elbow and the thread and smaller in the middle section.
How are spokes attached?
Starting at the hub in the center of the wheel, spokes radiate outward to the rim, where they attach to nipples, which are like little nuts that screw onto the spoke ends. If your bike has a loose spoke or two, you should tighten it just until it’s snug and plan to have the wheel trued soon.
What is another word for spokes?
What is another word for spokes?
| rods | bar |
|---|---|
| rungs | sap |
| shillalahs | shillelaghs |
| struts | truncheons |
| waddies | crooks |
What is a double butted frame?
Double butted tubes are thicker at both ends, the downtube for example where additional strength is required at the bottom bracket junction and headtube. Triple butted tubes serve the same purpose as double butted tubes but further reduce weight in the center.
Are double butted spokes better?
Double butted spokes are lighter than straight gauge and offer better ride qualities due to a more flexible center section. Double butted spokes are generally very strong, however spokes with 1.5mm center sections can be challenging to build at higher tension due to twisting.
What is triple butted spoke?
Triple butted spokes are thickest at the hub end, thinnest in the middle, and in between thicknesses at the rim. Triple butted spokes are mostly used in high load applications. Straight gauge spokes are one thickness straight the way through.
What is the purpose of spokes on a wheel?
Spokes are the connecting rods between the bicycle hub and the rim. Their main purpose is to transfer the loads between the hub and the rim, which are caused by the weight of the rider and the bike.
What is a butted spoke?
Typical butted spokes are 2.0/1.8/2.0 or 2.0/1.7/2.0 or 2.0/1.5/2.0 – the differences being the thickness of the center section of the spoke. While that looks like splitting hairs, there is a good amount of weight savings to be had with the thinner center sections.
What are the advantages of double-butted spokes?
Double-butted spokes do more than save weight. The thick ends make them as strong in the highly-stressed areas as straight-gauge spokes of the same thickness, but the thinner middle sections make the spokes effectively more elastic, allowing them to stretch (temporarily) more than thicker spokes.
What is the difference between SG spokes and triple butted spokes?
They require an additional forming step and are usually around 1.5 to 2 times the cost of comparable SG spokes. (Less common triple-butted spokes resemble double-butted spokes, but are even thicker at the elbow).
What are the different types of spokes on a bicycle?
They are available in straight gauge, butted (multiple diameters) and bladed versions. Most quality spokes are either butted or bladed because they are lighter and stronger than straight gauge spokes. This additional strength is the result of forging the butted or bladed sections.
