Source: Road Bike Reviews - how to change a rear bike tire with gears

How to change a rear bike tire with gears - Bicycle Repair & Maintenance Guides - Video Tutorials | BikeRide

our DIY video tutorials! Choose repair tools and lubricants, and begin fixing your bike. Bicycle Repair Guides - Video Tutorials. Click on a bike part or Derailleurs & Shifters. How to Install a Front How to Align a Rear Derailleur Hanger.

Fixed-gear bicycle bike how gears with to change rear tire a

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Bike Gears Explained

The issues surrounding crank length are many and opinions vary widely about what is right and wrong for crank length.

When do you use Gain Ratio? Bar width.

Cassette Removal and Installation

Tire weight. The weight of your tires comes into play two ways: With more weight at the outer circumference of the wheel, it takes more effort to get the wheel up to speed and the wheel will carry inertia better, making it roll well at speed, but also requiring somewhat more effort to slow.

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Recently I changed my tires from big, heavy sith to light weight, low-tread racing tires, leaving everything else the same on my bike, and the difference was very noticeable. Marin bikes hybrid my example, some of the increase in acceleration can be attributed to how tread affects rolling resistance, but the major difference was weight.

Overall bike weight.

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Basically covered in the tire electric bike cruiser, a heavy bike converting your old Schwinn High Sierra to single speed, for instance may require a lower gear than you would run on a lighter machine. Conversely, a lightweight racing machine probably can q a higher gear.

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In fact, fixed gear riders in general tend to gear pretty damn high, especially in hilly areas, like in the neighborhood of 2. As Surly pal Seattle Brad sez, you can always get up a hill; coming down yo something else altogether.

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Turning pedals quickly, in a lower gear ratio is similar to walking fast, or running: And it quickly improves with compare bikes. Optimal number of revolutions per minute is between 80 and — depending on individual body and the level of training. The main function of changing gear ratios is remaining in that optimal range. A certain gear ratio, on the same drivetrain, can be achieved with various chainring combinations.

bike a to with change rear how gears tire

Let us take for an example a drivetrain with front chainrings combination, and a 6 speed cassette. The exact same gear ratio can be achieved with rfar combination, as well as with Still, in both those combinations, the chain is completely crossed, twisted, like shown in the picture below:.

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This should be kept in mind when selecting gears. Why is this useful? Wih it needs to be noted that shifting from one front chainring to another requires a bit more time and is harder to achieve if a chain is under pedalling load.

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Also, one front shift results in a great er change of gear ratio than a rear shift. It can in fact be said that front chainrings provide a wider gear ratio range, while rear sprockets provide differences in gear ratios of adjacent gears.

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Imagine riding on a flat, approaching a 6 bikes. Say the chainrings on the bike are and the cassette is a 9 speed one: For a decent rrear on the flat, one could use aor a combination.

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They both give almost identical gear ratio, without much cross chaining. However, once a climb starts, a lower gear ratio will be necessary.

Bicycle gear ratios - speeds, gear inches

However, if one approaches the vike with a combination, lots of gear range change is achieved by gradual and easier rear shifting. Why can this be awkward?

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Then, as one starts to climb, a large front shift is necessary. Gear ratio change after shifting from big to the small chainring is so large, that it requires at least two more shifts on the rear to achieve a similar a bit shorter gear ratio.

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Downshift to first gear. How does that solve the problem?

a rear bike change how gears with to tire

First gear moves you a shorter distance for each spin of the chanhe, which makes it easier to pedal. If you need a big change, use your left shifter.

Motorcycle Tire Guide and FAQ - RevZilla

If you need a small change, use the right one. Try to keep the chain in a sort-of straight line between the front and rear sets, rather than going at an extreme angle from left to right. For example, in the very lowest gear the chain will be all the way on the left on both sets. In the very highest gear the chain will be all the way on the right.

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That stretches the chain and wears it out. Instead, shift the front set from chxnge left to the middle 1 to 2.

That keeps your chain nice and straight.

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Which brings us to…. The ever-increasing number of gears on bikes is mostly marketing hype.

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News:Sep 20, - So say you have a 32/16 gearing, with a rear wheel with an overall diameter of 26"; the Basically covered in the tire example, a heavy bike (converting your old Schwinn High Sierra to So why choose one over the other?

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