How do you calculate bicycle gear ratios?

Gear Ratio is the ratio of revolutions of the cranks to revolutions of the rear wheel.

Gear Ratio = Number of Teeth in Chain Ring ÷ Number of Teeth in Rear Cog.
Gear Inches = Diameter of Rear Wheel x (Number of Teeth in Chain Ring ÷ Number of Teeth in Rear Cog)

What is the best gear ratio for cycling?

High Gear Ratios At a cadence of 90 rpm (which is very comfortable and most people can handle significantly more), a 50-tooth chainring and a 12-tooth cog gives a speed of 47 km/h. That’s a gear ratio of 4.17:1, so a highest gear ratio of around 4:1 should be sufficient for ultra-distance cycling.

What is the gear ratio for the bike?

The gear ratio, combined with the circumference of your wheel and tyre determines how far you will travel with each revolution of the cranks. This is expressed as 4.55 : 1 meaning that for every 1 turn I make of the pedals at the front, I will turn the back wheel 4.55 times. This is the gear I would use on the flat.

Which gear is 1 on a bike?

Downshifting, or decreasing the resistance, allows for faster and easier pedaling; upshifting, or increasing the resistance requires more effort and builds endurance. On your shift lever, the lowest number, No. 1, represents first gear.

What gear should my bike be in when going uphill?

Low Gear = Easy = Good for Climbing: The “low” gear on your bike is the smallest chain ring in the front and the largest cog on your cassette (rear gears). In this position, the pedaling will be the easiest and you’ll be able to pedal uphill with the smallest amount of resistance.

What gear should a bike be in to go uphill?

What is the best gear ratio for a bicycle?

For most riders, the best gear ratio is a 2:1 ratio. This means there are twice as many teeth on the chainring as there are on the rear cog. A bicycle with 32 teeth in the front and 16 in the back has a 2:1 ratio, and will perform for a wide range of riding conditions, like slight inclines and stop-and-go traffic.

How do you calculate the gear ratio on a bike?

Gears are used to increase the force or speed and gear ratio is a unit of bike gearing. To calculate the gear ratio, divide the number of teeth in front chainring by the number of teeth in a rear sprocket: For example, if the number of teeth is even, the gear ratio equals 1.

What do gear ratios mean in a bike?

In simple terms, a gear ratio on a bike refers to how many times the back wheel will rotate for each full turn of the crank arms (pedals). If we have a chainring with 30 teeth and a sprocket with 30 teeth, there is no difference between the two; one full revolution of the pedals will result in one full revolution of the wheel.

How do you calculate gear inches on a bicycle?

Once you have established this basic knowledge it is time to calculate your gear inches. For your low gear inches, take number of teeth on your smallest chainring (front), then divide it by the number of teeth on your largest cassette gear (back), take the result and multiply it by your bikes tire diameter.

How do you calculate bicycle gear ratios? Gear Ratio is the ratio of revolutions of the cranks to revolutions of the rear wheel. Gear Ratio = Number of Teeth in Chain Ring ÷ Number of Teeth in Rear Cog. Gear Inches = Diameter of Rear Wheel x (Number of Teeth in Chain Ring ÷ Number…