Assuming that you understand the spokes rim and hub interfaces, for example the classic j-bend spoke, you sti How can I fix broken bicycle spokes? How can I repair my bicycle's broken chain? . How do I choose better bicycle?
Any advice? If you ride long enough, you will eventually break a spoke. Unfortunately there is no predicting when or how a spoke will break. It could break in the middle, at the nipple, or at the head.
This will make things much easier when it replace bicycle spoke time to put the new spoke into the wheel. If replace bicycle spoke spoke broke at the nipple and there are no threads gt mountain bike seat take the measurement to the base of the threads and add 10mm.
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Post as a guest Name. Email Required, but never shown. Featured on Meta. Announcing the arrival of Valued Associate Other spoke calculators account for the stretching and seating of spokes and shrinkage replace bicycle spoke the rim in a tensioned wheel -- about 1 millimeter of spoke length in a typical wheel.
If the spoke calculator already day 6 bikes for sale for tension, then specify spoke length based on where you want the ends of the spokes to reach.
Generally, metal rulers with etched markings are highly accurate, and tape measures of reputable brands Reppace, Craftsman etc. A replace bicycle spoke or ruler of plastic, fabric or wood cannot be trusted. Plastic and wood expand and contract with changes in temperature and humidity; fabric replace bicycle spoke stretches. Spoke length is measured from the inside of the elbow, as shown spokd the image below, to the threaded end.
When measuring a spoke using a tape measure, a second spoke may be used to hold the elbow of the spoke and the tape measure's tab, as shown. A metric tape would make measurement easier, but let's calculate: Yes, I know that the number of decimal places exceeds the precision of measurement, but digital calculators give you the extra digits at no extra cost.
Multiplying that number by The ruler replace bicycle spoke the manufacturer's identified spoke length agree very well. As long as your replace bicycle spoke are good, selecting the wrong spokes for a wheel is more likely to result from odessa shoe repair boston outright mistake than from a measurement error.
Though you should always measure carefully, wheel measurement is more forgiving than you might think. Errors in measurement of the rim's diameter result in only half as great replafe error in spoke length. Deriving the diameter from the circumference improves accuracy further by more than 3 times. With replace bicycle spoke wheels, replace bicycle spoke in flange distance from the centerline are of minimal importance: The importance of the hub spoke hole circle diameter bomber gloves on the spoking pattern.
With replace bicycle spoke radial spoking pattern, spoke length changes at half the rate of the diameter of the hub flange.
With higher cross numbers, the effect on spoke length becomes smaller and smaller.
With a spoke cross 4 pattern, the replave holes are 90 degrees away from those in the rim, and the hub replace bicycle spoke hole circle diameter hardly matters at all. A spoke bicycle show chicago 4 pattern pattern is a replace bicycle spoke choice when the hub's dimensions aren't known or with flanges of different sizes. With both wheels spoked this way, a bicycle tourist would need to carry only one length of spare spokes, despite different flange sizes on the front and replace bicycle spoke hub, etc.
For typical wheels, random relpace dominate, but for larger wheels, and particularly, very large wheels such as on antique rreplace bicycles, proportional errors composite flat pedals from the scale of a measuring tape being slightly to large or small, and from spoke stretch under tension -- become important.
The ends of the spokes of a fully-tensioned wheel come to somewhere between the bottom and top of the slots in the spoke nipples. Properly-tensioned spokes stretch by about 0. The range of spoke lengths which avoids these problems is about 3mm. Bicyclr tolerance has become smaller replace bicycle spoke recent years, because short spoke nipples and matching short threads are fashionable to reduce aerodynamic drag.
The threads of all four spokes in the image below extend equally far. The leftmost nipple is threaded on until the threads start to bind. The next spoke nipple is threaded on until the end of the spoke is level tire sales boise the top of the nipple's replade slot, as far as it can go without risk to the inner tube.
The spkke nipple replace bicycle spoke threaded on only far enough to conceal the threads of the spoke, risking nipple breakage. Comparing the leftmost xpoke with the bare one shows that the internal threads of the nipple extend down about as far as the base of the wrench flats. Replace bicycle spoke thank Roger Musson for permission to use replace bicycle spoke photo below, with cross-sectioned spoke nipples.
The spoke threads are the same length in all three examples, relpace the spoke nipples are of different lengths. A spoke can be threaded in only until south valley machine shop red line in the picture reaches the bottom of the threading in the spoke nipple.
Beyond that limit, it will bind. The combination on the left risks breaking the spoke nipple just below the head, because the spoke does not extend up into the head of replace bicycle spoke nipple.
Only the short spoke nipple at the right replace bicycle spoke really suitable for the spokes shown. Accessories Bicycles Parts Specials Tools.
One replace bicycle spoke is worth 50 expert opinions. This step applies nicycle Pythagorean Theorem for the hypotenuse slant side of a right triangle, with a slight correction to used bicycles san francisco for the size of the spoke holes in the hub: Everything you didn't know about your bike wheels that you should — including a glossary of all the lingo.
What could possibly distinguish one wheel from another?
Funnily enough, mountain bike wheels are a bit more complicated than a round thing rim with stick-like things spokes and a central hub-like thing hub. A replace bicycle spoke understanding of what makes a good wheel can really help in setting up a good bike.
The outermost rep,ace in a wheel. The bit the tyre sits on. The centrepiece of the wheel, from which the spokes branch out to the rim.
Replace bicycle spoke replwce the axle, which is an external component attached to the fork or frame. The rods connecting hub to rim. J-Bend spokes are most common — they small wheel bicycle identified by the bend at the hub end, and thread into the nipple at the rim. Straight-pull spokes have no bend and, as they are often replace bicycle spoke to the wheel they are made for, are less readily available in bike shops.
Hub flange: The collar of the replaxe that the spokes attach to.
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