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FAQ: Q factor cycling?

Q factor (bicycles) – Wikipedia

  • The Q factor of a bicycle is the distance between the pedal attachment points on the crank arms, when measured parallel to the bottom bracket axle. It may also be referred to as the “tread” of the crankset. The term was coined by Grant Petersen during his time at Bridgestone Bicycles.

The Q Factor of a bicycle is the distance between the pedal attachment points on the crank arms, when measured parallel to the bottom bracket axle. It may also be referred to as the “tread” of the crankset. The term was coined by Grant Petersen during his time at Bridgestone Bicycles.

What is Q factor on a bike?

Q factor is the overall width of an installed crankset, measured parallel to the bottom bracket shell from the outside of one pedal insertion point to the other. You can think of it like this: the larger the Q factor, the farther apart your feet will be.

How do I lower my Q factor?

The easiest way to reduce your Q factor is to install a shorter bottom bracket. There are many good, inexpensive square-taper BBs available in different lengths. You could pull the cranks off your present BB, measure them, and then order a shorter BB.

Do I need longer pedal axle?

Longer pedal spindles might be recommended. This rider’s stance width is too wide; the knees are tracking to the inside of the pedals. Shorter pedal spindles might be recommended. Proper stance width keeps knees happy and power transfer efficient, no matter the clipless or platform pedal you’re spinning.

How do you measure pedal stance width?

Stance Width – The distance between the center of one pedal to the center of the other pedal. This article will also reference individual leg stance width, which is defined by the distance from the center of the bottom bracket to the center of the pedal.

What is a good Q factor?

Good high-Q capacitors can have a Q factor value of over 10,000 at 1MHz and over 1,000 at 100MHz, while standard capacitors can have a Q factor as low as 50 at 1kHz. At lower frequencies, for example in audio applications, tantalum capacitors may be used as high-Q capacitors.

Can biking cause knee pain?

Most cycling knee pain results from a condition known as patellofemoral pain syndrome. This condition is commonly brought on by athletic overuse or high-impact use of the knees (among bikers, overuse is the more common culprit.) Malalignment of the patella (kneecap) can also cause or exacerbate issues.

What is Q factor formula?

The quality factor relates the maximum or peak energy stored in the circuit (the reactance) to the energy dissipated (the resistance) during each cycle of oscillation meaning that it is a ratio of resonant frequency to bandwidth and the higher the circuit Q, the smaller the bandwidth, Q = ƒr /BW.

How is Q factor calculated?

The Q factor of the pMUT can be determined by the real part of the impedance frequency spectrum, which is defined as Q = fr/Δf, where the resonance frequency fr is the frequency at which the real part of the impedance reaches its maximum, Δf is the width of the peak at its half height, so-called 3 dB bandwidth.

What does Q factor mean?

Q Factor is the distance between the outside of one crank arm to the outside of the opposite crank arm. Although Q Factor has become a universally recognised measurement, other people in the bike trade prefer to use a value for ‘stance width’ — which refers more directly to the distance between feet on the pedals.

How many pedal washers can I use?

You can add more than one pedal washer to your pedals to better fit riders with wide hips or use more washers on one side than the other to compensate for body asymmetry.

Do I need pedal spacers?

Designed to move the foot out and away from the crank arm to provide more foot clearance, Pedal Spacers / Pedal Extenders add to stance width for cyclists needing help with knees-out, excessive toes-out, extra wide feet, wide hips, or for those with discomfort on the outside of the knee.

How wide are bike pedals?

Standard road pedal width is 53mm. Stance Width (or pedal stance width) is the distance between the center of one pedal to the center of the other pedal.

What is the pedal axle on a bike?

A pedal usually consists of a spindle that threads into the end of the crank, and a body on which the foot rest is attached, that is free to rotate on bearings with respect to the spindle. Pedals were initially attached to cranks connecting directly to the driven (usually front) wheel.

What size are bike pedals?

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.

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