Drag Racing Gear Ratio Calculator
Sterndrives, outboards, and propellers. The Crusader GT200 is also a hybrid – you can go racing but also carry a GoPro to capture high speed laps in 1080p resolution. 55 gear combination. Shop online for GM, Ford and Dodge Transmission Parts and Torque Converters from PATC. 877 as the number for the gear ratio to calculate speeds in. 31" tall tire, How much gear can my buddy get away with to run around 7000 rpm in the top end in the 1/8. 40 2014 NSSR Racing. Final Gear Ratios When selecting a final gear ratio for a race car, the general idea is to take advantage of the engine's power curve and make it go as fast as possible in the confines of the. Home Contact The same DRIVER size and RPM will give the following speeds based on the following gear ratio changes. Use our Tire Size Calculator to find the suggested tire size specs for your vehicle. Higher gear ratios will increase your car’s wheel torque (force) while lower gear ratios will increase your car’s top speed. In the past I thought the shorter track used a lower gear. Use this calculator to determine your gear ratio and vehicle’s speed in any gear and any engine RPM for best performance. Since this doesn't always end up in a nice even number. Top speeds are either gear limited or drag limited. SCS Gearbox, SCS Quick Change Transmissions, 4X4 Transfer Cases & Reversers! Built to handle the most severe racing abuse off-road, and no gearing or shaft failures in over 20 years. Enter Diff + Gear Ratios and tyre diameter, then drag RPM slider to calculate speed from RPM. 30s with 4:10s in a close second Most people with power adders run a 3. To determine the correct gear ratio of the speedometer for your car, use the following formula to calculate the number of teeth on the driven gear (round to the nearest available gear):. If you are customizing, building, tuning your performance race car and you are looking for accurate and easy gear ratio calculations this is the app you need Racing Gear Ratio Calculator by Fortin. Gear Chart. This calculator outputs the how fast a car can go in each gear as calculated by the gear ratios, engine redline and tire size. Has adjustable collar for final pump positioning. Drag Racing Upgrading Tutorial Drag Racing Wiki Board index ‹ Creative Mobile Racing Games ‹ Drag Racing ‹ Achievements ‹ Awards, Top Times and Stats ‹ 1/4 and 1/2 miles Top Times- V1. Since this doesn't always end up in a nice even number. no need to enter anything in '6th' gear for a car with only 5 speeds). Visit Our Site For More Information. Crower builds performance racing parts from camshafts to crankshafts. 56 with 9 x 28” M/T slicks car started with a 304 w/big cam & auto w/4000 stall. Auto Transmissions for Race; Photos From Previously Drag Racing; For Sale. Calculating Equivalent Drive Ratio. Drag Racing Axles, Ford 9 inch Rear Ends, Drag Race Struts, Drag Racing Shocks, Racing Axles, Drag Race Brakes, Rear Axles, Dana 60, Ring and Pinion. 56 rear gear. I also looked at it that down the road I will go bigger motor and run in the higher RPM range and did not want to do another gear change. I bought a 8" rear out of a 66 and the gears looked pretty good and I got a rebuild kit and a friend is now rebuilding it and he has done a ton of these things and suggusted I get a new ring and pinion gear set while I am here just cause he cant warranty anything with it being the old gears. Calculating Equivalent Drive Ratio. What is spring rate? Spring rate refers to the amount of weight that is needed to compress a spring one inch. We have a whole forum dedicated to drag racing where drag racers can swap ideas and talk technical together with everything from engine tuning, fuel selection, and. Shifting at 5000rpm from 3rd gear into 4th (76mph), sees engine speed drop by almost 1500rpm, to a little over 3500rpm. If the vehicle does NOT have a posi-traction unit, jack one drive wheel of off the ground. We have a reputation of exceeding consumer expectations in product quality and performance - something we've carried forward from the late Carl Kiekhaefer, Mercury Racing president Fred Kiekhaefer's father and fo. and the next cart is telling me the same as Jeff and the rest said i went to low on the converter. Ian shows you how to find the effective gear ratio on your vehicle when you upgrade to bigger tires with this equation on a PowerNation Extra tech tip. Are you looking for new racing tires but do not know the right tire dimensions? Check our Race Tires Calculator now. The first user interface is their gear Ratio and RPM calculator. "Its like having a drag strip, dyno and chassis shop right in your computer. The ring and pinion gears in the drive axle determine the gear ratio of the drive axle, referring to the number of turns the pinion gear, or small gear, is required to make in order to turn the ring gear, or larger gear, one full turn. For sport ATV riders, the stock final drive ratio will generally be lower, around 3. Like its "little brother" the standard Drag Racing Analyzer, it let's you play "what if" with engine power, weather, gear ratios, tire size, driving style, etc. 56 rear gear. Click on the red button to open the pdf file. Auto Transmissions for Race; Photos From Previously Drag Racing; For Sale. We swapped out on one of owers for the lower robinson gear in the tranny. What are the benefits of a rear gear swap? Changing the rear end gear to a numerically higher (like going to a 3. To use the calculators, enter numbers in the two white fields in a row and click the "Calculate" button. Tweets by @@HotrodPitstop. com Calculate the theoretical 1/8 Mile ET, 1/4 Mile ET, 1/4 Mile Top End Speed, and Ideal 1/4 Mile Gear Ratio for a given application based on the Vehicle Weight (in pounds), Vehicle Horsepower (at the flywheel), RPM through lights (finish line), and Tire Diameter (Height) in Inches. Ive seen tons of guys running 3. Ford Performance - Mustang Ford Racing Parts Ford Performance Parts is the leader in performance parts and accessories for Mustang and Ford Lightning. Achieve the ultimate in acceleration with the MFactory Close Ratio Gears. Final Transmission Ratio 3. • Refer to the Ford Racing “Camshaft Usage” chart for performance characteristics of cams based on their duration. They look cool and have the potential of being very functional, but they may also be robbing you of power/gas mileage. Transmissions, Engines and Parts; Parts of Top Fuel and Funny Car Racing; Gear Calc. function of gear ratio (ratio of spur gear teeth to pinion gear teeth) for each track (as a different series) to find the best gear ratio for each one. 20180816_125123 small block to big block adapter 8 bolt crank $ 725. This gear kit is for high horsepower applications; such as time attack and drag race VW's. Gears are in very good condition. for Slot Car Racing. Like its "little brother" the standard Drag Racing Analyzer, it let's you play "what if" with engine power, weather, gear ratios, tire size, driving style, etc. The upgraded 5. Use the Gear Ratio Speed Calculator to determine which is the case for your particular scenario. 496 BBC with bottle. Motorcycle performance parts - Chains, Sprockets & Accessories. There are also 72 and 80-pitch gears out there for road racing, but none for the drags. 46 Diff ratio = 3. There are GM spec, Ford spec and AMC spec transmissions. We have a whole forum dedicated to drag racing where drag racers can swap ideas and talk technical together with everything from engine tuning, fuel selection, and. Concerning the axle gear ratio on HD trucks, why is it that the optional 4. 5th gear ratio is 1. Carburetor Size Calculator This is a simple calculator for determining the approximate size of a carburetor. Roll your pointer to the left of the table to see typical values. When calculating horsepower, the formula using mph can be more accurate because variations in traction, launch technique, gear ratios, and shifting have less effect. Ford 9" PRO Gear Large Pinion 3. The Drag Racing Analyzer is software for your personal computer to simulate a full power, standing start acceleration of most any vehicle you can design. MPH Calculator. Will be up on the Ravensblade site soon as well, just in case Nasioc. Share news, tips, tuning advice, car designs, join teams and everything else related to Nitro Nation. GM 4-Speed Automatics 700R4/4L60E/4L80E There are two basic GM 4-Speed automatics: The light duty 700R4/4L60E found mainly in half ton and car applications, and the heavy duty 4L80E in the heavier applications. 10:1 rear-axle gear ratio, the starting-line ratio is 10. 80 and third gear is a 1. - Precision Crafted Racing Components and Chassis Manufacturer for the Drag Racing Industry Speed (MPH) from RPM, Rear Gear &Transmission Gear Ratio Enter RPM:. THIS IS AN EXPANDED VERSION OF AN ARTICLE BY Jack Kane WHICH APPEARED IN ISSUE 029 of RACE ENGINE TECHNOLOGY MAGAZINE. The Official subreddit of Nitro Nation Drag & Drift the best cross-platform racing game available on Android, iOS and Windows 10. Home Contact The same DRIVER size and RPM will give the following speeds based on the following gear ratio changes. Choice of differential and gear ratio so it’s easy build the perfect solution for your street rod, muscle car or truck. We provide how-to and technical articles, vehicle and build features and examples, plus calculators and lookups that will help you get your ride from dream to driver. 73 gear even though I have seen a few run 4. 44 inch tyre diameter. Performance off-road coilover shocks are designed to have two different springs installed on them such that the vehicle transitions from a softer combined spring rate to the stiffer lower spring at some point during the compression stroke. If it has 28 teeth, it's a close ratio. Use the Drag Performance Calculator to calculate the theoretical 1/8 Mile ET, 1/4 Mile ET, 1/4 Mile Top End Speed, and Ideal 1/4 Mile Gear Ratio and the 0-60 MPH Time Calculator to calculate the theoretical 0-60 Time for a given application. RANDYS Worldwide. RB Racing-RSR produces 200mph Land Speed Record holding exhaust systems, turbocharger kits,turbocharger components, and fuel injection systems for motorcycles. Will be up on the Ravensblade site soon as well, just in case Nasioc. 10 gear ratio and a 3. So let's take a look at running down the freeway using this same car set-up and numbers. Racing calculators for determining horsepower, ET, MPH, converter slip, engine displacement and more. This calculator is for a 1:1 final drive ratio. Pretty pretty difficult! If it would have been that easy manufacturers would have listed out figures like 2m/s² rather than saying it accelerates from 0-60 kmph in 5. Use this gear ratio calculator to select the best ring & pinion and gear ratio combinations to serve your needs. Gear Ratio - Roadkill Extra - Duration:. While an airfoil can be characterized by relations between angle of attack, lift coefficient and drag coefficient, a propeller can be described in terms of advance ratio, thrust coefficient, and power coefficient. Good for Gas, Alky, Nitro & Diesel! All pumps are internally coated and flowed. Low Drag Components; Racing Calculators. The Computech Race Air Pro digital weather station incorporates all the great features from the track proven RaceAir™ such as automatic air sampling, an interal fan, and precision digital sensors for consistent air readings, plus programs for Drag Racing, Circle track, Road Racing, Tractor Pulling, and Karting. 20180816_125123 small block to big block adapter 8 bolt crank $ 725. eg 62 divided by 18 = 3. To calculate a gear ratio, divide the number of output revolutions by the number of input rotations. Now available with the award winning ATI T400 SFI Certified SuperCase. Additionally, you can increase your tire size to run down that time a little more. A improper gear ratio will make the clutch or belt slip and cause damage to the unit very quickly. It is also the same letter that Volkswagen uses on the end of the ring & pinion part number to identify that gear ratio. Differential Gear Ratio Calculator; Engine RPM Calculator; Ring Gear — Pinion Gear Ratio Calculator. Like its "little brother" the standard Drag Racing Analyzer, it let's you play "what if" with engine power, weather, gear ratios, tire size, driving style, etc. eCart Predefined Gear Ratios:. Horsepower must be between 200 and 1300 HP. Now I am not sure I have never raced on a 1/8 mile track so I geared for the 1/4. The Official subreddit of Nitro Nation Drag & Drift the best cross-platform racing game available on Android, iOS and Windows 10. load and much lower drag. Look at the horsepower curve for your car (Googling for "Subaru WRX dyno" for instance usually works). Rear axle ratio= 2. And everybody that have played drag racing cars and have tuned are used to gear ratios so I think that you guys should put it in bike edition. 500 tires and currently running 14/54 but only getting 11. Given a table of available gears, choose the best set for the race. Been racing, have 3. I bought a 8" rear out of a 66 and the gears looked pretty good and I got a rebuild kit and a friend is now rebuilding it and he has done a ton of these things and suggusted I get a new ring and pinion gear set while I am here just cause he cant warranty anything with it being the old gears. The fewer pounds the horse has to drag with it, the easier it is for it to run. Ring-and-pinion selection made easy! Save yourself the headache and let us figure out your ring-and-pinion gear ratio! Just type in your info (example: 5000 RPM), press calculate, and you’ll get the right ratio without the guesswork. The HP calculator gives you the Wheel and Engine HP from 1/4 ET and Weight. Easily find parts for ring and pinion gears, differentials, axle shafts, manual transmission parts, and transfer case parts, using our easy eCatalog. by entering your target amount in the SIP Planner Calculator. Clutch Pro Software. 12 X 38" = 4. If you would like to find a value other than speed, fill in information for all the boxes and clear the valu in box you would like an answer for. Surfbaud Freeware Propeller Calculator is an Excel spreadsheet program. Low ratio gears like "2. 56 rear gear. spacers, cam gear, fuel pump eccentric, timing chain, cam gear alignment and front cover clearance. I'm a recent switch back to drag racing too! We started racing stock cars at portland speedway in the late 80's early 90's and some modifieds at south sound and in 98 we switched to dirt track racing and won 8 track championship 5 in a dirt street stock and 3 in a open wheel midget and ran most of those tracks you said. We specialize in ONLY high performance carburetion and components for Race and High Performance applications. my k5 is hitting 6k on tack at the end with 456 ratio and i still have 30 -40 feet left. Finding the right gear ratio for a particular track in a certain class of circle track racing may be as easy as asking your competitors. Drag Racing Calculators,Calculators to find 1/4 mile ET and MPH, CID,Piston Speed,gear ratio,carburetor size,margin of victory,Engine calculator, Calculates relative horsepower, air density, density altitude, virtual temperature, actual air pressure, vapor pressure and dyno correction factor and more. 14s but i need the gear ratios for the 5. We work with different manufacturers in the development of stronger parts. This calculator estimates your 1/8 mile and 1/4 mile elapsed time (ET) and speed. In SAIL's New Sailboat Review, we typically calculate ratios using the mainsail and 100% foretriangle area. Tuning transmission for Drag Racing. Scroll through the list of popular transmissions to find yours. Last but certainly not least, you need to consider whether your vehicle will benefit more from a performance gear style or a pro gear style. Spend a few minutes in any bench-racing session and soon you'll hear rear axle gear ratios discussed. Want to know the right gear for staying under 7000 rpm on the track?. Gear Ratios range greatly from 2. I was pleased! The information in your books was very helpful and allowed me to […]. may change. Although this calculator works for most motors, some require different gearing to compensate for heat issues. Gear Ratio and Tire Size Chart NEXT PAGE This gear ratio and tire diameter chart is meant to give you an approximation of ideal RPMs at highway speed (65 mph) for three situations: fuel economy, every day driving and increased towing power. Whatever the case, rocker ratio is an effective tuning tool for racers who understand the advantages it can provide. Gear Ratio Calculator, calculates ratios with gears and tire sizes, Can take input in both imperial and metric formats. MD4E-DRAG / MD2D-DRAG. The problem is that changing. SCS Gearbox, SCS Quick Change Transmissions, 4X4 Transfer Cases & Reversers! Built to handle the most severe racing abuse off-road, and no gearing or shaft failures in over 20 years. Enter the maximum potential safe engine RPM. The Converter Slippage Calculator gives you the slippage of your converter at a given RPM and speed. 00 Formula to calculate Gear Ratio based. Starting-Line Ratio = First-Gear Ratio x Rear-Axle Gear Ratio. for example gear ratios of 3. The defaults show suggested values. In off-road racing, where tire diameters are relatively uniform, installing the same pinion and spur as another racer will net the same gear ratio. See effect on (Top-)speed in Gear/RPM matrix. Use this gear ratio calculator to select the best ring & pinion and gear ratio combinations to serve your needs. For example, if your car's trans-mission has a 2. 2 Trap RPM Page 29 This program will calculate the trap engine RPM based on tire size, MPH, gear ratio, and torque converter slip. 1-866-631-0196 RPM Calculator. Gear Calculator Dealer Locator Dealer Login. It's very common and been around for 40+ years. If you aren't into drag or street racing and you live in an area where you mostly do freeway driving for extended periods of time, you won't want (or even care about) a low gear ratio for jack rabbit starts. Both are available with the Same Gearing availability as the Non-Mated Case and the Same Options for Output Yokes and Flanges. It was during these early days that Bob had a vision to produce his own tires specifically designed for racing. 38? Would 6. The ultimate top speed may be limted by the power, drag and aerodynamics of each individual car. 12 by your Jeeps tire diameter (Example:. First, divide the new tire diameter by the original tire diameter, then multiply that figure by the original (3. The superior quality of these gear sets is the result of years of racing development, outstanding design, and state-of-the-art manufacturing methods. Engine RPM at Cruise Speed The chart shown below shows RPM calculations at 55 MPHfor various combinations of final Gear Ratioand Tire Diameter. We offer boats, pontoons, fishing boats and more from award winning brands such as Avalon, Godfrey, Hewes, Lund, Thunder Jet and Weldcraft with service, parts and financing. Scroll through the list of popular transmissions to find yours. Auto Transmissions for Race; Photos From Previously Drag Racing; For Sale. Enter the tire size diameter and the target vehicle speed in MPH. 1) Power to Weight 2) Gears 3) Suspension 4) Differential 5) You the Driver Power to Weight Always having a calculator in arms reach is. Gear Ratio= Rear Axle ratio multiplied by Transmission gear ratio. Ok I checked it out on the gear ratio/mph calculator at F-body. 70 @140 mph in the 1/4 and 6. Racing cyclists often wear "skinsuits" in order to reduce direct friction. The event is known as Lights Out 10, and many have dubbed this the superbowl of drag radial racing. We couldn't be more proud of our racers at this year's event. The Richmond Super Street 5-Speed Transmission with Overdrive is the newest addition to the Richmond line of bulletproof transmissions. For a given sail area, the aspect ratio, which is proportional to the square of the sail height, is of particular significance in determining lift-induced drag, and is used to calculate the induced drag coefficient of a sail :. 0:1 rear ratio. Simple guide to choosing the best diff gear ratios for your Jeep or 4x4 truck The correct chart for your gear ratio is important for drivability and economy. 5 is turning about 3,489 rpm at the finish line with its 117 mph trap speed. If the vehicle does NOT have a posi-traction unit, jack one drive wheel of off the ground. The purpose of the gear ratio is to give the best combination of performance and economy for a given engine size and vehicle weight. Has common surface rust but no major rust or issues. GEAR RATIO CALCULATOR; DRAGSTRIP CALCULATOR; TEMPERATURE CONVERTER; FUEL INJECTION CALCULATORS; TECH TALK; ABOUT; CONTACT; John Maher Racing on Facebook; Cal-Look. You can also now calculate when using different transmission gear ratios, like in first gear or in overdrive. Want to know the right gear for staying under 7000 rpm on the track?. Compute estimated increase in engine horsepower when an after market, racing upgrade or performance part has been installed with ET. If you do not know this ratio, you can simply put in 1. 10 gear ratio and a 3. Horsepower is a unit of measurement that calculates power. If a car has less than 6 speeds, only enter gear ratio numbers for the gear ratios that apply (i. Given a table of available gears, choose the best set for the race. Think Crower "Every part for Power" for all of your racing hard parts. Gear Ratio Calculator. Control the shift time up to hundredths of milliseconds. If you would like to find a value other than speed, fill in information for all the boxes and clear the value in box you would like an answer for. With an overdrive transmission your RPM in overdrive will be 15% to 30% less than indicated. For Drag racing if you are N/A the best would be 4. MD4E-DRAG / MD2D-DRAG. Example: If your max HP is at 6300 RPM use 6300 for the RPM. We offer many performance / heavy duty automatic transmission parts the others don’t sell. The stock 93 RX-7 tires were 225/50/16 (225mm section width, 50% aspect ratio, 16 inch wheel). We need to choose the correct gear for our particular racing and track configuration, and we need to maintain that overall ratio when we make changes. Last but certainly not least, you need to consider whether your vehicle will benefit more from a performance gear style or a pro gear style. Here at L&M Engines we’ve been building and tuning the engines that power some of the world’s fastest Ford Mustangs and Shelby GT500s for over 40 years. 29:1 Mulitiply by 336 Divide by stock tire diameter. Planetary transmissions rely on a central sun gear to provide a 1:1 direct drive ratio once shifted from the launch ratio. Gear Ratio Calculator. GM 4-Speed Automatics 700R4/4L60E/4L80E There are two basic GM 4-Speed automatics: The light duty 700R4/4L60E found mainly in half ton and car applications, and the heavy duty 4L80E in the heavier applications. Lenco Transmission Overview. Does any one have any back on the gas mileage for the above configurations. Explore the features and specifications of the BMW 3 Series Sedan. Gears allow your Mustang to accelerate faster and reach peak rmps quicker, resulting in faster track times and a better jump off the line. They look cool and have the potential of being very functional, but they may also be robbing you of power/gas mileage. Ford Racing is dedicated to manufacturing the highest quality products offered in the industry. 86 ring and pinion, your choice of Weddle 1st through 4th gear ratios, swing axle aluminum spool with syncro or Pro-Shift configuration. 55 gear and. Choice of differential and gear ratio so it’s easy build the perfect solution for your street rod, muscle car or truck. Its wealth of performance enhancements and modern technologies — not to mention bold new rear styling — make this sports car equally at home on the road, track or drag strip. ) Tire Radius= Distance, in inches, from the center of the tire to the ground. To use the calculators, enter numbers in the two white fields in a row and click the "Calculate" button. Use the Drag Performance Calculator to calculate the theoretical 1/8 Mile ET, 1/4 Mile ET, 1/4 Mile Top End Speed, and Ideal 1/4 Mile Gear Ratio for a given application. This gear kit is for high horsepower applications; such as time attack and drag race VW's. Be sure to try Dr. Plagued with soft shifts and poor reliability,the AOD was not originally designed with performance in mind. 86 ring and pinion, your choice of Weddle 1st through 4th gear ratios, swing axle aluminum spool with syncro or Pro-Shift configuration. 123-125mph 11. SCS Gearbox specializes in tractor pulling, mud racing, & monster truck gear. To figure out which gear you need, visit LatemodelRestoration. About Us Introduction Why MFactory? Contact Us. The Mercury Racing MAX5 propeller, developed and hand-crafted by the Mercury Racing Propeller Artisans, is designed for single and multiple engine applications including the 400R outboard and 600 SCi sterndrive. Supports tire sizes in metric and inches. The Gear Speed and Tire Size Calculator app is for comparing different tire and wheel combinations to transmission gears and differential ratios. Use the Gear Ratio Speed Calculator to determine theoretical speed for a car in each of its gear ratios. 550 each run, but the E. Auto Transmissions for Race; Photos From Previously Drag Racing; For Sale. Although operating at these RPM levels has since been outmoded by. I've noticed people asking how to set up the gear ratio's for their tunes. This is with Ron’s Terminator, a 01/2 twin gear pump,. 195/55 x 15 = 24. Drag racing timing lights for ATVs, Snowmobiles, motorcycles etc. by entering your target amount in the SIP Planner Calculator. 1997-1999, and the 58-tooth front diff ring gear in 1990-1996 vs. Rear End Ratio @ Desired MPH: Tire Diameter (Height) in Inches: Over Drive Ratio (1 for no OD) Estimated Rear End Ratio. Chevrolet 69 Camaro Z28 Info: *PAC 600hp AMD - Tune for American Muscle Drag Lobby. Although operating at these RPM levels has since been outmoded by. Low Drag Components; Racing Calculators. 06 first gear which is good for initial take off but this makes the transmission have the widest ratio …. Ok I checked it out on the gear ratio/mph calculator at F-body. Here is a list of our Drag Racing Gear Sets and Installation Kits. The defaults show suggested values. This is where the tuning takes place, here you adjust each of your gear ratios. By gearing the engine down, more torque is created. The 1970 description says "Available only with 428 CID 4V Cobra or Cobra Jet engine" and "Not available on Boss 302, or with other optional ratio axles". We stock EK, and RK chains. Rebel Gears makes the highest quality American made custom motorcycle sprockets for all makes , most models. prediction decisions. 11 to 1 or higher. Corvette needs some body work, a new transmission and a whole lot of elbow grease, but you can buy it cheap. You can then change the tire size and ratios to see how. 39 the bike with -2+4 in the past without the tranny gear swap. x ‹ BEST CAR LIST!!!. running 21/42 gears instead of 18/36, both with the same gear ratio. ) disclaim any responsibility for injury, loss of life, or loss of property resultant from direct or indirect use of our products. 80 and third gear is a 1. The Gear Ratio Calculator can be used to edit existing gear ratio files, create new files, or simply as a calculator to quickly and easily determine driver and driven gear values (number of teeth) for a specific ratio. 83 Ratio MADE IN THE USA! SAME DAY SHIPPING (if ordered before 2pm EST) Lightning™ Series is an option that can be selected below, This option can increase the shipping time by up to two weeks!. 46 Diff ratio = 3. You should shift near the rev limiter and ajdust your gear ratio to land a bit before the peak so you will always benefit from the maximum HP/torque from your engine during the race. This calculator is used to find the approximate maximum speed of your brushless-powered R/C vehicle. Fuel Injector Size Calculator (Other Fuel Injector Calculators have been moved to individual pages, check out the list HERE it's near the bottom of the page) To use the Fuel Injector Size tool to select the correct size injector for your engine, fill out the above form with the specified data. It's very common and been around for 40+ years. This chart is based on 65 MPH and a gear ratio of 1:1, on a manual transmission in 4th gear. I just got into drag racing and we race 1/4 mile scale I have a S16D motor on. Launching a Drag Car of helping the shadetree mechanic in understanding a drag racing suspension in simple terms and diagrams. pinion teeth X tyre diameter X PI / spur teeth. Lenco Transmission Overview. Ive seen tons of guys running 3. You should be able to find your gear ratio listed on the axle tag, however, if that has gone missing, you can simply count the number of teeth on each gear and divide the number of ring gear teeth by the number of pinion gear teeth. To find your vehicle’s RPM enter your Ring and Pinion Gear Ratio, Tire Height and Speed and press "Solve". This is our page for questions and answers for Drag Racing on Android. Weight must be between 1100 and 4000 Lbs. 55 gear and. The following information is needed to calculate chain length: 1 Chain Stay Length This is the distance between the centres of the two gear cogs. 70 @140 mph in the 1/4 and 6. We'll work to keep you motivated and informed and with industry news, product information and reviews, event coverage, and well-curated articles and. One of the most common pieces of Mustang advice is to sway the gear ratio (axle ratio) in the differential. 686111 for 1st and 4. 90 gear ratio means the drive shaft turns 2. The G-101 racing 4-speed transmission is the ultimate in 4-speed performance. Accuracy The stats calculator uses real world data from 100s of cars in conjunction with mathematical formulae in order to estimate the above times and speeds. Calculate engine horsepower after a quarter mile run using the ET method. Optimal shift point is defined as the flywheel rpm for which the difference in transmission output torques between two gears is near zero for the same output shaft speed (and same road speed). Formula To Calculate MPH: RPM ÷ GR x SC ÷ 12 x 60 ÷ 5280 = MPH @ 1:1 Clutch Ratio GR = Gear Ratio (divide top sprocket into bottom sprocket) SC = Sprocket Circumference (number of teeth x track pitch). Last but certainly not least, you need to consider whether your vehicle will benefit more from a performance gear style or a pro gear style. function of gear ratio (ratio of spur gear teeth to pinion gear teeth) for each track (as a different series) to find the best gear ratio for each one. Would you agree the 8. com The following formula has been developed to calculate the optimum final Gear Ratio to suit your application. Launching a Drag Car of helping the shadetree mechanic in understanding a drag racing suspension in simple terms and diagrams. If you have a 3,500-pound car with a crankshaft stroke of 3. 62:1 MPH (trap speed) 125mph Transmission output ratio ( last gear gatio used during race) I saw they ended in 5th gear. Drag Racing with Jim Hand – Part 11: Improving your E. The gear you’re going to be changing is the pinion gear, which is the metal one attached to the motor. PATC is on the cutting edge of performance rear wheel drive American transmission development. 06 first gear which is good for initial take off but this makes the transmission have the widest ratio …. Not my fastest tune but very competitive and a great base tune. I usually set up a spread sheet for different tunes using gear ratios RPM and MPH.