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  2. Bicycle gearing - Wikipedia

    en.wikipedia.org/wiki/Bicycle_gearing

    Gain ratio is the ratio between the distance travelled by the bicycle and the distance travelled by a pedal, and is a pure number, independent of any units of measurement. Front/rear gear measurement uses two numbers (e.g. 53/19) where the first is the number of teeth in the front chainring and the second is the number of teeth in the rear ...

  3. Cadence (cycling) - Wikipedia

    en.wikipedia.org/wiki/Cadence_(cycling)

    Cadence can be measured via various types of sensors, for example a simple reed switch and a magnet which detects one revolution each time the crank arm passes a point on the frame, or more advanced sensors based on a force sensor (e.g. pedals), torque sensor (e.g. crank arms) or other types of cycling power sensors.

  4. Gear inches - Wikipedia

    en.wikipedia.org/wiki/Gear_inches

    To take this into account, Sheldon Brown proposed a gear measurement system called gain ratio, which is calculated by the distance travelled by the bike divided by the distance of revolution of the pedal axle during one turn of the crank.

  5. Mechanical advantage - Wikipedia

    en.wikipedia.org/wiki/Mechanical_advantage

    Mechanical advantage in different gears of a bicycle. Typical forces applied to the bicycle pedal and to the ground are shown, as are corresponding distances moved by the pedal and rotated by the wheel. Note that even in low gear the MA of a bicycle is less than 1. Consider the 18-speed bicycle with 7 in (radius) cranks and 26 in (diameter) wheels.

  6. Motion ratio - Wikipedia

    en.wikipedia.org/wiki/Motion_ratio

    Motion ratio is the more common term in the industry, but sometimes is used to mean the inverse of the above definition. Motion ratio in suspension of a vehicle describes the amount of shock travel for a given amount of wheel travel. Mathematically, it is the ratio of shock travel and wheel travel.

  7. Pedal equation - Wikipedia

    en.wikipedia.org/wiki/Pedal_equation

    The point O is called the pedal point and the values r and p are sometimes called the pedal coordinates of a point relative to the curve and the pedal point. It is also useful to measure the distance of O to the normal p c (the contrapedal coordinate ) even though it is not an independent quantity and it relates to ( r , p ) as p c := r 2 − p ...

  8. 3 steps to calculate your debt-to-income ratio - AOL

    www.aol.com/finance/3-steps-calculate-debt...

    Key takeaways To calculate your debt-to-income ratio, add up your monthly debt payments and your gross monthly income and then divide your debt by your gross income.

  9. Bellcrank - Wikipedia

    en.wikipedia.org/wiki/Bellcrank

    Many applications do not change the direction of motion but instead amplify a force "in line", which a bellcrank can do in a limited space. There is a tradeoff between range of motion, linearity of motion, and size. The greater the angle traversed by the crank, the more the motion ratio changes, and the more non-linear the motion becomes.