Fixed gear gear ratio calculator

The required reserve ratio is not calculated by individuals or banks, but is instead set by those who oversee the banks for that particular economy. The required reserve ratio is t...

Fixed gear gear ratio calculator. Generally tires squat about 3%. If you are using the calculated diameter, multiply that number by .97 to get a more accurate reading. If you are measuring your tire, measure from flat ground up to the center of the hub and multiply that number by 2. Easy to use gear ratio calculator. Use our gear ratio calculator to find the correct gear ratio ...

Gear Ratios. BikeCalc offers a wide range of gear sizes for BMX, CX, MTB, road bikes, track bikes, ... BikeCalc allows fixed gear cyclists who skid stop to extend the lifespan of their rear tire by increasing the number of patches. ... It's the only gear calculator I trust with the correct maths. Thank you for keeping it alive all these years!"

The Fixed Gear Bike Ratio Calculator provides you with a clear and easily understandable gear ratio value. This numerical output is crucial for cyclists as it offers insights into how your bike performs under diverse conditions.In general, you can calculate rotational speed using the following gear ratio equation: S 1 • T 1 = S 2 • T 2, where. S 1 is the speed of the driver wheel and T 1 is the number of teeth on that wheel. S 2 and T 2 are the speed and tooth count of the driven wheel. If you're designing a gear system, you will find a gear ratio chart handy.The Best fixed gear ratio for racing is usually between 60 and 80-90. A higher ratio requires less pedal rotation to travel forward. But it also makes the ride much more difficult because of increased leg strain during climbs. Also, a different type of track bicycle is called ‘bunny bikes’ or ‘single speeders’.The gear ratio determines the gear that the bike is in and how much resistance is felt when pedalling. A high gear ratio means that the bike is in a harder gear, which makes it harder to pedal but allows the bike to go faster. A low gear ratio means that the bike is in an easier gear, which makes it easier to pedal but limits the bike’s speed.A reserve ratio formula is used for calculating how much money banks can loan out as a percentage of the deposits they have on hand. It takes into account the required reserve rati...To find the ideal selection, multiply the final drive ratio by the redline speed in fourth gear (152 mph) and divide that by the top track speed (140 mph). This would yield a theoretical 3.33—which is close enough to the nearest available final drive ratio of 3.36:1.

Tableau des skid patchs. Le ratio correspond au nombre de dents du pédalier divisé par le nombre de dents du pignon, plus ce chiffre est élevé plus le pédalage deviendra difficile au démarrage et en côte mais plus il sera possible de monter en vitesse. A l’inverse un ratio bas permettra un démarrage facile, l’absorption de ...This ratio is calculated by dividing the number of teeth on the chainring by the number of teeth on the cog. The image below identifies the cog and chainring. For example, if your …Generally tires squat about 3%. If you are using the calculated diameter, multiply that number by .97 to get a more accurate reading. If you are measuring your tire, measure from flat ground up to the center of the hub and multiply that number by 2. Easy to use gear ratio calculator. Use our gear ratio calculator to find the correct gear ratio ...Oct 15, 2020 · Gear inches can be calculated using the following formula: Gear inches = (Diameter of the drive wheel x Number of teeth on the chainring) / Number of teeth on the cog. To increase gear inches, you can either increase the number of teeth on your chainring or decrease the number of teeth on the cog. Keep in mind that changing your tire width will ... An epicyclic gear train consists of two gears mounted so that the center of one gear revolves around the center of the other. A carrier connects the centers of the two gears and rotates to carry one gear, called the planet gear, around the other, called the sun gear. The planet and sun gears mesh so that their pitch circles roll without slip. A point on the pitch circle of the planet gear ...

Net fixed assets are calculated with the following formula: fixed asset purchase price + additions to existing assets – accumulated depreciation – accumulated asset impairment – li...Lego Technic Gear Ratio Calculator. This is a free online app to find gear sequences for a given transmission ratio. Features. Specify a list of available gears. Exact and approximate search. Exclude connections that can't be easily built with real parts. Supply fixed gear sequences at the start and end of the generated sequence.Whether you’ve been in an accident or your car broke down, vehicle repair estimates let you know approximately how much it’s going to cost to get your ride fixed. Ask your car repa...Update 1.5: Fixed DXF resolution issue. Maximum number of teeth increased to 400. Update 1.4: TA-DA: Added internal gear support, and the ability of positioning the first gear. Update 1.3: Fixed DXF file format. On YouTube. Finally some videos I found on youtube: Gear Generator How to Draw Perfect Gears (4:23) Laser Cut Gears (3:08)A simple gear ratio calculator to find the speed and mechanical advantage of a gear system of spur gears. Gear ratio is determined solely by the number of teeth on each …

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How to Use Our Calculator. Calculations are simple. Once you’ve set a predetermined time (such as ten seconds), count the number of times each of the gears rotates, then simply go to our web site and type the following: Input the number of times the ring gear rotates. Input the number of times the pinion gear rotates. Press the calculate button.Jun 21, 2018 ... Gear to help you whip out skidz: https://kit.com/ZachGallardo/guide-to-skidding-on-a-fixed-gear Get exclusive behind the scenes access by ...Limitations of Gear Ratio Speed Calculation Accuracy. Constant Gear Ratios: The basic formula assumes constant gear ratios, which may not hold true in all real-world scenarios.; Idealization: Real gear systems may introduce friction and other factors that the basic formula doesn’t account for.; Complex Gearing: Some gear systems involve multiple …Different from the other answer, I read the question as OP wanting to change to lower gear ratio without changing chain length. 52/15 is an extremely high ratio. For all practical purposes, if you want to keep the chain length same, the sum of numbers of teeth in cog and ring should stay the same.The gear ratios help determine how well the machine is performing. Formula to calculate gear ratio. Example: If the driver gear has 20 teeth, and the driven gear has 40, calculate the gear ratio. Therefore, the gear ratio is 2:1. This means that, for every rotation of the driven gear, the driver gear makes two rotations.

The bicycle gear calculator displays graphically the gearing of derailleur gears and gear hubs. It can be used to compare different setups to find the optimal gearing for all kinds of bicycles.However, certain gear ratios have become popular in the fixed gear community due to their balanced performance characteristics. Here are a few examples: 2.75 (44/16): This is a versatile ratio often chosen by street cyclists. It balances speed and agility well, allowing for comfortable cruising and quick accelerations.Formula of Worm Gear Ratio Calculator. The formula for calculating the Gear Ratio is straightforward: Gear Ratio=Number of Worm Gear Teeth / Number of Worm Wheel Teeth. This formula involves the following definitions: "Number of Worm Gear Teeth" refers to the count of teeth on the worm gear, which resembles a screw-like gear. Electric Bike Gear Ratio Calculator. Are you an enthusiastic cyclist or an e-bike aficionado looking to... Calculate the gear ratios of your bike's drivetrain to optimize pedaling cadence and power delivery, ensuring the right combination of gears for different terrains and riding preferences. The formula used in the Gear Velocity Calculator is: Velocity = (2 * π * Pitch Diameter * Rotational Speed) / 60. Where: Velocity is the linear velocity of the gear in units per minute or units per second, depending on the units used for the rotational speed and pitch diameter. π (pi) is a mathematical constant approximately equal to 3.14159.Since the planets are rigidly coupled together, the summation of forces on the two gears must equal zero. The force at the sun gear mesh results from the torque input to the sun gear. The force at the second ring gear mesh results from the output torque on the ring gear. The ratio being 41.1:1, output torque is 41.1 times input torque.Apr 25, 2024 · The Fixed Gear Bike Ratio Calculator is a valuable tool that simplifies the process of calculating your gear ratio. Let’s Get Started. To make the most of the Fixed Gear Bike Ratio Calculator, follow these straightforward steps: Step 1: Gather Essential Data. Before you begin, it’s essential to gather specific information: Here is a list of the top five fixed-gear bike gearing options for hills, ranked by their difficulty: 23/19 Best fixed gear ratio for hills. 22-11 Best fixed gear ratio for steep hills. 21-13 Best fixed gear ratio for hilly terrain. 20-15 Best fixed gear ratio for very hilly terrain. 19-17 Best fixed gear ratio for seriously hilly.Use our house flipping calculator to determine the total spend, return on investment, and profits of your fix-and-flip project. Real Estate | Calculators REVIEWED BY: Tricia Tetrea...Divide the number of teeth on each "driven" gear by the number of teeth on the "drive" gear for each interlocking set of gears to calculate the intermediate gear ratios. In our example, the intermediate gear ratios are 20/7 = 2.9 and 30/20 = 1.5. Note that neither of these are equal to the gear ratio for the entire train, 4.3.Jun 21, 2018 ... Gear to help you whip out skidz: https://kit.com/ZachGallardo/guide-to-skidding-on-a-fixed-gear Get exclusive behind the scenes access by ...

How to Calculate Ratios. In order to keep numbers in direct relation you should first divide or multiply, which depends on your task, them in the ratio. Therefore, a ratio of 8/6 is an equivalent ratio of 4/3: in that particular ratio calculation, you should just multiply 4, as well as 3, by 2. You may also want to try our Aspect Ratio Calculator.

The gold-silver ratio is measure of how many ounces of silver it takes to buy an ounce of gold. The gold-silver ratio is measure of how many ounces of silver it takes to buy an oun...Simply select a vehicle, and it will prefill the fields in the calculator (Optional) Speed: Choose between mph or km/h. Tyre Size: Enter your tyre size or Outer Diameter (inches). Max rpm: Enter your maximum engine rpm limit. Final Ratio: Enter your final drive ratio. Gear Ratio: Enter the gear ratio for each gear.Calculate. [/fstyle] Formula: Unlock the mystery of gears with this formula that’s smoother than a well-oiled cog: Gear Ratio = Number of Teeth on Driven Gear / Number of Teeth on Driving Gear. Ready to dive into the fascinating world of gear ratios? Let’s gear up and go!Also calculates metres of development and (optionally) speed or cadence, and gain ratio. Bicycle 'gear inches' is equivalent to the diameter of the drive wheel on a direct-drive bicycle with pedals fixed to the wheel, or when the number of teeth on the chainring and the sprocket are the same: a 1 to 1 drive. Gear inches is used mostly for ...The following instructions aim to assist you in effectively using our gear ratios calculator, ensuring a more seamless and informed experience. Count the number of teeth on the front cog of your bicycle, and select this value in the picker labeled chainring. Do the same on your rear cog for the picker labeled sprocket.The bicycle gear calculator displays graphically the gearing of derailleur gears and gear hubs. It can be used to compare different setups to find the optimal gearing for all kinds of bicycles.Follow these simple steps to determine your optimal gear ratios using our bike gear ratio calculator: Select the Min and Max number of teeth on your bike’s chainrings. Select the the Min and Max number of teeth on your bike’s Cog. Click “Calculate” to generate a list of gear ratios, gear inches, gain ratios, and development …A bike’s gear ratio is the number of teeth on the front sprocket relative to the back sprocket. The number of teeth on the front and rear sprockets together determines the bike’s gear ratio, which affects how hard or easy it is to pedal and its top speed. Most fixed-gear bikes come standard with a chainring and sprocket of 46 teeth and 16 ...Step 1: Accessing the Calculator. Begin by opening the Gravel Bike Gear Ratio Calculator in your web browser. The calculator interface will be displayed on your screen. Step 2: Input Chainring Teeth. Locate the first input field labeled “Chainring Teeth.”. Here, you should enter the number of teeth on your bike’s chainring.

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I'll calculate the best chainring/cog combinations and skid patches for your speed and cadence and what your speed will be at various cadences. Calculators FixieThe calculation uses the number of teeth in the ring gear and divides it by the number of teeth in the pinion gear to provide you with a “[result] to 1” ratio. For example, if the pinion gear has 41 teeth, and the ring gear has 11 teeth, the ratio would be calculated as 41/11, which is equal to 3.73 = 3.73:1.The Optimum Rearend Ratio Calculator is a powerful tool designed to determine the ideal rear-end gear ratio for a vehicle. This ratio plays a critical role in the performance of a vehicle, affecting its acceleration, top speed, and fuel efficiency.By inputting a few key parameters, users can calculate the optimum rear-end gear ratio …NOTE 1 : The subscripts 1 and 2 of z 1 and z 2 denote pinion and gear. All calculated values in Table 4.1 are based upon given module m and number of teeth (z 1 and z 2).If instead, the modulem, center distance a and speed ratio i are given, then the number of teeth, z 1 and z 2, would be calculated using theformulas as shown in Table 4.2.. Table 4.2 The …This is the all the information you need to know about the fixie gear ratio. You can try different things with your fixed gear apparatus proportion constantly and you will eventually arrive at the same result that the 44/16 proportion or 2.75 is an ideal one for a large portion of fixed gear riders. On the off chance that you consider you need ...The Sortino Ratio is a tool for measuring the risk-adjusted return of an investment. It only factors in downside volatility, unlike the Sharpe Ratio. Calculators Helpful Guides Com...Use our simple Gear Ratio Calculator to quickly find the correct gear ratio for your ring and pinion gear set. Save yourself the headache and let us figure out your ring-and-pinion gear ratio! Select the value you want to solve for. For the Tire field, enter your tire diameter in inches. If you know your gear ratio then this doubles as a ...Apr 25, 2024 · The Fixed Gear Bike Ratio Calculator is a valuable tool that simplifies the process of calculating your gear ratio. Let’s Get Started. To make the most of the Fixed Gear Bike Ratio Calculator, follow these straightforward steps: Step 1: Gather Essential Data. Before you begin, it’s essential to gather specific information: ….

4. Input the center distance between the pinion and the gear. 5. If needed, also input the gear cutting tool's tip rounding radius coefficient. 6. Input the number of teeth of the pinion and the gear. 7. Enter the precision grades of the two gears as well as absence or existence of tooth form correction (s). 8. A simple gear ratio calculator to find the speed and mechanical advantage of a gear system of spur gears. Gear ratio is determined solely by the number of teeth on each gear. Check the box if the gear is on the same shaft as the gear above it, leave it unchecked if the gear meshes with the gear above it. Input Speed (rpm) Jun 2, 2021 ... Hello, welcome back! Remember to Like, Comment and Subscribe. Follow Me Instagram: http://www.instagram.com/dave_noakes Strava ...In this video we'll talk about how to calculate fixed gear ratios, how those numbers translate to your ride feel and speed, and how to choose the best gear r...One of the vital statistics of a company or an individual is called the debt-to-equity ratio. But the key is knowing how to interpret this important metric in relation to future ne...Jan 10, 2024 · Calculate your bike gear ratio for your fixed gear bike. Use our free calculator now. How to Use the Bicycle Gear Inches Calculator. Using the Bicycle Gear Inches Calculator is simple and straightforward. Here’s how: Step 1: Select the Rim Size. Choose the size of your bike’s rim from the drop-down menu. Houseman Autosport 6564 Decker Drive London, Ontario, CANADA N6P 1J5. P: 519-652-3030 (Eastern Time) Send Us a MessageJun 2, 2021 ... Hello, welcome back! Remember to Like, Comment and Subscribe. Follow Me Instagram: http://www.instagram.com/dave_noakes Strava ...Casio is a renowned brand that offers a wide range of electronic products, including watches, calculators, and digital cameras. If you own any Casio device and encounter issues or ...To calculate the size of the lowest gear you need, you should begin by determining what speed you can maintain on a certain climb and what pedaling cadence is tolerable. ... 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 … Fixed gear gear ratio calculator, FixMeUp! is software that helps you figure out what gears will fit on your fixed-gear or single-speed bike. It's particularly useful for bike frames with vertical dropouts, because on those frames you can't just move the rear wheel to take up slack in the chain. , Powerful featuresfor every cyclist. BikeCalc makes it easy to optimize the gearing on your bicycle. You can also calculate your speed at a particular cadence for each gear. Plus, you can manage all your gearing configurations in one place. And there are articles helping you every step of the way., Combining precise calculations and an intuitive design, BikeCalc provides you everything you need to analyze and optimize the gearing on your bicycle, saving you time, guesswork and potentially a costly mistake. - Gear Ratios. BikeCalc offers a wide range of gear sizes for BMX, CX, MTB, road bikes, track bikes, fixies, recumbents and many more., Divide the number of teeth on each "driven" gear by the number of teeth on the "drive" gear for each interlocking set of gears to calculate the intermediate gear ratios. In our example, the intermediate gear ratios are 20/7 = 2.9 and 30/20 = 1.5. Note that neither of these are equal to the gear ratio for the entire train, 4.3., Fixed Gear bikes can be ridden on tracks or roads, but they tend to be less maneuverable than other types of bicycles. Here is the fixed-gear bike size chart: Rider Height. Rider Inside Leg. Bike Size. 5’1″ – 5’3″. 27″ – 29″. 48cm. 5’3″ – 5’5″., 3 days ago · Multiply the gear speed in rad/s by 60; Now divide the obtained quantity from step 1 by 2π to obtain the gear speed in revolution per minute (rpm); and. Cool!, Now you can easily convert the gear speed in rad/s to rpm. Input gear teeth number. The number of teeth on your input gear, a.k.a. your driving gear. , So, one revolution of the pedals at a gear ratio of 39/28 will take you 3.23 meters (2.31 x 1.4). If you multiply this figure by your cadence – let’s say 100 rpm in this case – you can calculate the speed. In this example, the bike would be traveling at 19.4 km/h (3.23 m x 100 rpm x 60 minutes). Note that other factors affecting speed ..., To determine the gear ratio of a particular gear combination, all you need to do is divide the number of teeth on the front chainring by the number of teeth on the rear cassette. For example, if your bike has a front chainring with 50 teeth and a rear cassette with 11 teeth, the gear ratio would be: 50 / 11 = 4.55., , A simple gear ratio calculator to find the speed and mechanical advantage of a gear system of spur gears. Gear ratio is determined solely by the number of teeth on each gear. Check the box if the gear is on the same shaft as the gear above it, leave it unchecked if the gear meshes with the gear above it. Input Speed (rpm) , The Optimum Rearend Ratio Calculator is a powerful tool designed to determine the ideal rear-end gear ratio for a vehicle. This ratio plays a critical role in the performance of a vehicle, affecting its acceleration, top speed, and fuel efficiency.By inputting a few key parameters, users can calculate the optimum rear-end gear ratio …, So, one revolution of the pedals at a gear ratio of 39/28 will take you 3.23 meters (2.31 x 1.4). If you multiply this figure by your cadence – let’s say 100 rpm in this case – you can calculate the speed. In this example, the bike would be traveling at 19.4 km/h (3.23 m x 100 rpm x 60 minutes). Note that other factors affecting speed ..., The pitch diameter of a gear is just the number of teeth divided by diametrical pitch (larger values of "diametrical pitch" mean smaller teeth). The gear generator program tends to refer to tooth spacing. Pitch diameter can also be calculated as tooth spacing * number of teeth / (2*π), where 2*π = 6.283. Here's another planetary gear set. , Simply select a vehicle, and it will prefill the fields in the calculator (Optional) Speed: Choose between mph or km/h. Tyre Size: Enter your tyre size or Outer Diameter (inches). Max rpm: Enter your maximum engine rpm limit. Final Ratio: Enter your final drive ratio. Gear Ratio: Enter the gear ratio for each gear., Select gear sizes below and hit CALCULATE to see ratios for all three cases. Sun gear: Select 8 teeth 12 teeth 14 teeth 16 teeth 20 teeth 24 teeth 28 teeth 36 teeth 40 teeth 56 teeth 60 teeth Ring gear: Select 24 teeth (inside of a 56t turntable) 48 teeth (Power Miners wheel) 60 teeth (small 4-piece ring gear) 140 teeth (large 4-piece ring gear) 168 teeth (Hailfire …, 19-11-2002 – V1.02 – Fixed pulldowns so they don’t disappear off the screen. Gear Chart 23-02-2010 – Improved usability, better formatting and highlighting. Mouse over highlights the cell to give you a summary. Tioga Specific gear chart and calculator Finally you can work out the ratios specifically for your PowerBlock and Comp III tyres., Calculate. [/fstyle] Formula: Unlock the mystery of gears with this formula that’s smoother than a well-oiled cog: Gear Ratio = Number of Teeth on Driven Gear / Number of Teeth on Driving Gear. Ready to dive into the fascinating world of gear ratios? Let’s gear up and go!, The formula for calculating the Gear Ratio is straightforward: Gear Ratio=Number of Worm Gear Teeth / Number of Worm Wheel Teeth. This formula involves the following definitions: "Number of Worm Gear Teeth" refers to the count of teeth on the worm gear, which resembles a screw-like gear. "Number of Worm Wheel Teeth" signifies the number of ..., Concrete mixing ratios are the formula for calculating the correct amount of each ingredient used, including water, cement, sand and aggregate, to produce concrete with the propert..., Determining gear ratios (introduction) Calculate 1st gear reduction; Calculating the reduction of the 5th gear (according to the geometric series) Calculating other reductions (according to the geometric series) ... The differential always has a fixed gear ratio. The gearbox must be geared to that. Commercial vehicles can have up to 5 differentials in the …, How to Use: To utilize the Sprocket Gear Ratio Speed Calculator, follow these simple steps: Input the number of teeth for the driving sprocket in the designated field. Enter the number of teeth for the driven sprocket. Specify the speed of the driving sprocket in revolutions per minute (RPM). Click the “Calculate” button, and the calculator ..., The gear ratio is calculated as: \[ \text{Gear Ratio} = \frac{\text{Output RPM}}{\text{Input RPM}} \] Where: Output RPM is the RPM of the output gear. Input RPM is the RPM of the input gear. Example Calculation. If an input gear with 1500 RPM drives an output gear at 500 RPM, the gear ratio is calculated as: \[ \text{Gear Ratio} = \frac{500 ..., Gearbox Ratio = Number of Teeth on Driven Gear / Number of Teeth on Driving Gear = 80 / 20 = 4. In this example, the calculated gearbox ratio is 4. This means that for every revolution of the driving gear, the driven gear will rotate four times. The gearbox provides a speed reduction of 4:1. The gearbox ratio calculation is used in various real ..., Belts offer flexibility in that the shafts do not need to be right next to one another, and gears are more commonly used in high-load applications. Figure 11.2.1 11.2. 1: Belts and pulleys are often used to transmit motion and torque from one shaft to another. Figure 11.2.2 11.2. 2: Gears are another common way of transmitting motion and torque ..., Concrete mixing ratios are the formula for calculating the correct amount of each ingredient used, including water, cement, sand and aggregate, to produce concrete with the propert..., Step-3: By Multiplying gear-ratio between 1 to 2 and 2 to 3. We will get resultant GR between Driver and Driven Gear. Resultant Multi Gear Train GR = 0. 5 × 0.5 = 0.25. From the above, calculated gear ratio we can calculate the speed and torque at output gear., A bike’s gear ratio is the number of teeth on the front sprocket relative to the back sprocket. The number of teeth on the front and rear sprockets together determines the bike’s gear ratio, which affects how hard or easy it is to pedal and its top speed. Most fixed-gear bikes come standard with a chainring and sprocket of 46 teeth and 16 ..., Jan 13, 2015 · Rohloff Hubs. The minimum gear ratio you can use with a Rohloff hub is 2.5:1. Therefore on a 26″ Rohloff bike, you can get as low as 15-95″ and on a 700c bike you’ll get 19-102″. Pinion Gearboxes. Pinion gearboxes have a huge range (636%), providing both lower and higher gears than a Rohloff hub. , Update 1.5: Fixed DXF resolution issue. Maximum number of teeth increased to 400. Update 1.4: TA-DA: Added internal gear support, and the ability of positioning the first gear. Update 1.3: Fixed DXF file format. On YouTube. Finally some videos I found on youtube: Gear Generator How to Draw Perfect Gears (4:23) Laser Cut Gears (3:08), Determining gear ratios (introduction) Calculate 1st gear reduction; Calculating the reduction of the 5th gear (according to the geometric series) Calculating other reductions (according to the geometric series) ... The differential always has a fixed gear ratio. The gearbox must be geared to that. Commercial vehicles can have up to 5 differentials in the …, Simply select a vehicle, and it will prefill the fields in the calculator (Optional) Speed: Choose between mph or km/h. Tyre Size: Enter your tyre size or Outer Diameter (inches). Max rpm: Enter your maximum engine rpm limit. Final Ratio: Enter your final drive ratio. Gear Ratio: Enter the gear ratio for each gear., Gear Ratio. Count the number of teeth on the front cog of your bicycle, and select this value in the picker labeled chainring. Then do the same on your rear cog for the picker labeled sprocket. Gear Inches. Following on the steps to calculate the gear ratio, measure in millimeters the thickness of your rear tire across its tread when inflated ..., The gear ratio is calculated by dividing the number of teeth on the front chainring by the number of teeth on the rear sprocket. For example, if the front chainring has 50 teeth and the rear sprocket has 25 teeth, the gear ratio would be 2:1. Understanding bicycle gear ratios is important for any cyclist.