Table of Contents

## How do you calculate gear speed on a bike?

When you buy a bicycle, your maximum speed is almost always determined. Let’s actually calculate the speed of a bicycle….What is Cadence (RPM)?

Average Cadence | Calculation Formula (Tire circumference x Gear ratio x RPM x 60min) | Speed |
---|---|---|

120rpm | 2.09 x 2 x 120 x 60 = 30,096m | 30.1km/h |

**What is the fastest gear ratio in bike?**

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. James Hayden, the winner of the 2017 TCR, came to the same conclusion and chose to put a highest gear of 46-12 on the bike that he ended up winning the race with, a ratio of 3.83:1.

### What is the speed ratio of a bicycle?

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.

**What gears for what speed?**

Remember each car will be geared slightly differently, but a good rule of thumb for changing gears is that first gear is for speeds up to 10 mph, second gear is for speeds up to 15 mph, third gear is for speeds up to 35 mph, fourth gear is for speeds up to 55 mph, fifth gear is for speeds up to 65 mph, and sixth gear …

#### How do you calculate gear ratio on bicycle?

Thanks to Stephen D. Cohen and Timothy Lipetz for programming help. Problems with this program?

**What is the best gear ratio for a bicycle?**

To summarize the above advice, a range of gear ratios from about 0.8:1 to 1.0:1 up to about 3.8:1 to 4.0:1 is reasonable. Total desired gear range in percentage is therefore 380 to 500% (4.0/0.8 * 100% = 500%), so I’ll use 400% to keep things simple.

## How do you calculate mph on a bike?

The Road Bike: Light and speedy. Road bicycles are ideal for exercise,because they encourage performance.

**How do you calculate gear ratio?**

Start with a two-gear train. To be able to determine a gear ratio,you must have at least two gears engaged with each other — this is called a