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1/4 Mile Speed Calculator
Source: by Fast wheels at members.tripod.com
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1/4 Mile Time Calculator
Source: by Fast wheels at members.tripod.com
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Actual Speed vs. Speedomter/PSOM Reading w/tire size change
Source: by intercotire.com
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Aero Drag - HP Loss
Source: by G-Tech gtechprosupport.com
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Aerodynamic & Rolling Horsepower
Source: by bgsoflex.com
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Air Requirements in CFM Calculator
Source: by raceabilene.com
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Alternator Sizing (for audio amps, OEM electrical accessories, etc.)
Source: by HO� highoutputalternator.com
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Battery Cold-Cranking Amp Estimation
Source: by bgsoflex.com
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Bore & Stroke (gasket thickness, deck height, valve pocket, head ccs & # of cylinders to compression ratio & displacement
Source: by Ross Racing Pistons rosspistons.com
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Brake Master Cylinder Lever Ratio
Source: by markwilliams.com
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Brake Pedal Ratio
Source: by markwilliams.com
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Calculators & Tables
Source: by intercotire.com
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CFM Calculator
Source: by Pony Carburetors, Inc. ponycarburetors.com
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Coil spring rate
Source: by proshocks.com
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Coil Spring Rate
Source: by f-o-a.com
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Coil Spring Rate Calculator
Source: by blueovaltrucks.com
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Compression Ratio, piston head volume/compr. height, ring end gap, deck clearance/displacement
Source: by kb-silvolite.com
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Compression Ratio
Source: by Federal-Mogul
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Compression Ratio (head volume in CC, piston top volume, cylinder bore, crankshaft stroke, deck height & gasket height)
Source: by Bowling & Grippo bgsoflex.com
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Compression Ratio HP Change Calculation
Source: by Bowling & Grippo bgsoflex.com
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Compression Ratio-Displacement Calculator
Source: by raceabilene.com
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Crawl Ratio
Source: by therangerstation.com
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Crawl Ratio
Source: by Pit Bull Tire Company� pitbulltires.com
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Crawl Ratio Calculator; by Transmission Low Gear Ratio, Transfer Case Low Gear Ratio & Axle Gear Ratio
Source: by blueovaltrucks.com
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Crosswind, Highway
Source: by csgnetwork.com
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Cubic Inches to Liters (click Site Map, Chad's Tips, Previous Tips)
Source: by autokrafters.com
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Cylinder Head Flow Correction
Source: by Dan B at Bowling & Grippo bgsoflex.com
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Deck Clearance; compute the deck clearance for above or below deck applications
Source: by kb-silvolite.com
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Differential Gear Computation, Best (top speed MPH, tire diameter, RPM @ peak HP)
Source: by Bowling & Grippo bgsoflex.com
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Differential Gear Ratio (RPM, tire diameter, target MPH)
Source: by currieenterprises.com
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Differential Gear Ratio Calculator (RPM, tire size and desired MPH)
Source: by currieenterprises.com
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Distance, Temperature, volume, time, speed, mass, power, density, pressure, energy, etc.
Source: by joshmadison.com
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Distances between Longitude & Latitude Points
Source: by csgnetwork.com
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Drive Shaft Velocity Calculation
Source: by bgsoflex.com
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Engine Displacement by bore, diameter, # of cylinders
Source: by Federal-Mogul
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Engine Displacement Calculator
Source: by bgsoflex.com
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Engine Horsepower Calculation
Source: by bgsoflex.com
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Engine Related Formulae; Static Compression Ratio, CFM, HP & Torque, BHP, Cylinder volume (displacement), Piston speed (ft. per mm.), Valve Spring Rate, Rod Ratio, Starting Ratio, Carburetor Size formula, Center of Gravity, Transmission's Gear Ratio, Drill sizes for Tapping Threads, etc.
Source: by truckpulls.com via web.archive.org
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Engine Size & Compression
Source: by Mike C at Procrastination Racing
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Estimated Quarter ET from Rear Wheel HP & Weight
Source: by raceabilene.com
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Estimated Quarter Mile Speed from Rear Wheel HP & Weight
Source: by raceabilene.com
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ET & MPH Environmental Correction; correct quarter-mile Elapsed Time (ET) and Miles-per-Hour (MPH) to Standard Conditions
Source: by Bowling & Grippo bgsoflex.com
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Exhaust Header Length Computation
Source: by bgsoflex.com
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Fraction to Decimal
Source: by Federal-Mogul
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Fuel Injector Sizing Program, General
Source: by Bowling & Grippo bgsoflex.com
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Fuse Size
Source: by HO� highoutputalternator.com
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Gear Ratio (new tire diameter & gear ratio)
Source: by Reider Racing Ent., Inc.
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Gear Ratio (new tire diameter & gear ratio)
Source: by Pit Bull Tire Company� pitbulltires.com
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Gear Ratio (ring & pinion teeth count)
Source: by therangerstation.com
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Gear Ratio (ring & pinion teeth count)
Source: by currieenterprises.com
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Gear Ratio (ring & pinion teeth count)
Source: by jawsgear.com
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Gear Ratio (RPM, tire diameter, target MPH)
Source: by currieenterprises.com
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Gear Ratio Change From Tire Change
Source: by therangerstation.com
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Gear Ratio Change From Tire Change; ".by New Tire Diameter: Old Tire Diameter: Current Gear Ratio; This calculator will take your gear ratio and tire sizes and tell you what the effective or Actual Ratio is. It will then suggest a New Ratio along with a Hi and Low alternative. This New Ratio will return the vehicle to it's original performance after the addition of larger tires. Obviously, you will have to round the new ratio to the closest available ratio..."
Source: by blueovaltrucks.com
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Gear Ratio Determination; "...remove the differential cover or the 3rd member and count the number of teeth on the gears. Unfortunately, this can get messy. One somewhat easy yet very reliable way is to jack up the wheels, disconnect the driveshaft, rotate one wheel, and count how many revolutions the pinion yoke/flange makes.
If you turn one tire & the other one either stays still while the pinion rotates, or the other one rotates backward while the pinion stays still, or something in between, then you've got an open diff or a very weak LSD (like a Trac-Lok with too many miles on it). In this case, you need to secure one wheel (perhaps by lowering the tire onto the ground), then you can figure your gear ratio by rotating the airborne tire TWO full rotations and counting the number of times the pinion rotates. 3.73 turns means 3.73 gears. If you only rotate the tire once, then 1.865 turns means 3.73 gears. If you turn one tire & the other one turns the same number of turns in the same direction, then you've got a good LSD or locker. In this case, you can just rotate the tires ONE full rotation and figure your gear ratio by counting the number of times your pinion rotates. 3.73 turns means 3.73 gears..." Read More
Source: by Obi-Wan at jedi.com
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Gear Ratio Guide for Larger Tires; Scroll Down or Click, Another RPM/Gear Ratio/Tire chart if site reverts to main page; MIESK5 NOTE, Rough Country� removed this same chart from their site in FEB 2011 & company rep said it isn't there anymore.
Source: by Rough Country� via broncocity.com
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Gear Ratio Optimum Shift RPM (4 speed manual)
Source: by Drag Performance richmondgear.com
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Gear Ratio; Enter the number of teeth on your ring and pinion gear set to find the gear ratio. Example: Ring Gear / Pinion Gear = Ratio
Source: by differentials.com
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Gear Ratios & And here is a chart of rpms for gear ratios with a few different tire sizes tire at 60 miles per hour
Source: by Carl J at jantzengineering.com
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Gear Ratios, (RPM, speedometer, etc., scroll to bottom)
Source: by Mark M at wt4x4.net
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GPS Data Conversion Tools
Source: by Lars at BB.BC4x4.com
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Header Length Computation Program
Source: by bgsoflex.com
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Highway Dyno
Source: by bgsoflex.com
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Highway Dyno
Source: by Bowling & Grippo bgsoflex.com
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Holley Carburetor Jet Program
Source: by Bowling & Grippo bgsoflex.com
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Horsepower and Torque
Source: by Federal-Mogul
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HP to Quarter Mile
Source: by musclecarclub.com
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HP, simple
Source: by dsm.org
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Ignition Circuit Simulation
Source: by bgsoflex.com
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Impedance, for Dual Voice Coil Subs
Source: by HO� highoutputalternator.com
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Impedance, for Single Voice Coil Subs
Source: by HO� highoutputalternator.com
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Inch - MM
Source: by mdmetric.com
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Inch to MM
Source: by industrial-enclosures.com
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Intake Runner Length Prediction
Source: by bgsoflex.com
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Intake Runner Length Prediction
Source: by Bowling & Grippo bgsoflex.com
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International Time Zone Converter
Source: by csgnetwork.com
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Leaf Spring Calculator
Source: by blueovaltrucks.com
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Light Truck Tire
Source: by csgnetwork.com
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Machinist's Calculator (right angle triangles)
Source: by machinist-calculator.com
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Metal Weight
Source: by Metal Suppliers Online suppliersonline.com
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Metric Conversion Table
Source: by Bresco
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Metric Tire Conversion
Source: by therangerstation.com
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Metric Tire Conversion
Source: by Rough Country� roughcountry.com via web.archive.org
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Metric Tire Conversion
Source: by Pit Bull Tire Company� pitbulltires.com
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Metric Tire Conversion
Source: by Red Rock 4x4
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Metric Tire Conversion
Source: by Jeff B at rmftc.com
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Metric Tire Conversion
Source: by blueovaltrucks.com
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Metric Tire Conversion
Source: by therangerstation.com
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Miles Per Hour (MPH) (tire diameter change)
Source: by currieenterprises.com
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Miles Per Hour (MPH) (tire diameter, RPMs, axle ratio); Enter the maximum potential safe engine RPM. Enter the tire size diameter and the target vehicle speed in MPH. Click on Calculate Differential Gear Ratio. The value will be returned in estimated differential gear ratio, based on the entered values. To do another, click the Clear Values button and then enter a new set of values. Calculated accuracy of current Javascript enabled browsers is generally 16 places
Source: by currieenterprises.com
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Miles Per Hour (MPH) (tire diameter, RPMs, axle ratio, transmission & transfer case ratios)
Source: by Pit Bull Tire Company� pitbulltires.com
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Miles-Per-Gallon (MPG) by coefficient of drag, frontal area, tire pressure, brake-specific fuel consumption, and speed
Source: by Bowling & Grippo bgsoflex.com
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Miles-Per-Gallon (MPG) by Miles Driven & Gallons Bought
Source: by 4wheeldrive.about.com
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Miles-Per-Gallon (MPG) by Miles Driven & Gallons Bought
Source: by therangerstation.com
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Miles-Per-Gallon (MPG) Calculator; "...This calculator will compute your truck's Miles Per Gallon and forecast your gasoline expense for one month and for one year. It also allows you to see how much money you would save if you were driving a truck that got better gas mileage. Only fill in the blocks to the left of the red line. Do not enter anything in the black boxes. The results will be shown in the black blocks to the right..."
Source: by blueovaltrucks.com
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Mimimum Cable Size to Use (AWG) Table
Source: motorcityreman.com
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MM to Inch
Source: by industrial-enclosures.com
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On-line Conversion - convert just about anything to anything else in Windows�
Source: by OnlineConversion.com
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Online; Using PC, PDA, WAP & Cell Phone
Source: by calculator.com
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Optimum Quarter ET from Quarter Mile Top Speed Calculator
Source: by raceabilene.com
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Piston Compression Height; get the approximate piston compression height.
Source: by kb-silvolite.com
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Piston; will give you the proper piston head volume with a known compression ratio
Source: by kb-silvolite.com
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Ramp Travel Index (RTI) Calculator
Source: by therangerstation.com
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Re-Gearing, Bronco; "...equations for determining what gear ratio you may want .."
Source: by Jer C (Godless, Beerman, SOLD) at FSB
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Rear End Ratio (RPM, MPH, tire diameter)
Source: by markwilliams.com
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Rear End, overall width, (click in left panel)
Source: by Nine Plus new9inch.com
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Revolutions Per Minute (RPM) (axle, transmission & transfer case ratios, tire diameter
Source: by currieenterprises.com
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Ring and Pinion Calculator; Calculate Ratio By Counting Teeth
Source: by blueovaltrucks.com
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Ring End Gap; you can obtain the proper ring end gap requirements for KB Pistons using end gap factors from inside the front cover of the KB catalog or on this web site
Source: by kb-silvolite.com
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Ring End Gap; you can obtain the proper ring end gap requirements for KB Pistons using end gap factors from inside the front cover of the KB catalog or on this web site
Source: by kb-silvolite.com
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Road Mapping scale
Source: by csgnetwork.com
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RPM (axle ratio, MPH, tire diameter)
Source: by precisiongear.com
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RPM (axle ratio, MPH, tire diameter)
Source: by jawsgear.com
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RPM (axle ratio, transmission & transfer case, tire diameter)
Source: by Pit Bull Tire Company� pitbulltires.com
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RPM at a given MPH, or MPH at a given RPM, tire diameter, final (differential) gear ratio, and transmission ratio
Source: by Bowling &; Grippo bgsoflex.com
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RPM Calculator (RPM/MPH); by axle ratio, transmission & transfer case type, tire diameter); Punch in da info; see graph; then click Unclutter
Source: by balsa.no
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RPM, Street Performance (rear end ratio, tire diameter, desired MPH, etc.)
Source: by richmondgear.com
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RPM; Use the RPM calculator to determine what RPM your engine will run based on gear ratio, tire diameter, transmission and MPH. You can try various combinations to come up with an appropriate combination of ring and pinion gear ratio and tire diameter for your vehicle. The RPM calculator should be used as a guideline for comparative purposes only. Your vehicle will probably run at different RPM�s than those you calculate. See What gear ratio do I need in FAQ for a discussion on choosing a ratio.
Source: by differentials.com
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Scientific (area, cosine, tangent, square root, sines, quadratic equation)
Source: by westechperformance.com
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Scientific w/extended capabilities for Windows�
Source: by binarythings.com
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Shift Point, Optimum
Source: by Bowling & Grippo bgsoflex.com
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Specialist Calculators, shapes, general arithmetic, Cost of Living Index in var. countries, etc.
Source: by Cleave Books cleavebooks.co.uk
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Speedometer & PSOM Driven Gear Calculator, Ford
Source: by Jim R at home.mchsi.com
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Speedometer Calculator, by Tire Diameter
Source: by Pit Bull Tire Company� pitbulltires.com
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Speedometer Calculator, by Tire Diameter
Source: by currieenterprises.com
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Speedometer Calculator, by Tire Diameter
Source: by The Ranger Station� therangerstation.com
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Speedometer Calculator, by Tire Diameter
Source: by blueovaltrucks.com
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Speedometer Calculator, Changed Ring Gear and Pinion Ratio; "...This calculator requires the use of Javascript enabled and capable browsers. This calculator is designed to determine the difference between the indicated speedometer speed and the actual speed after a change of gear ratio on the ring gear and pinion. This assumes no other changes such as tire or wheel size, engine changes or transmission changes. Enter the ratio of the original ring gear and pinion (changed from) and the new ring gear and pinion (changed to). Enter the indicated speed as read on the speedometer. Click on the Calculate button. At any given speedometer indicated speed, the true speed is the ratio difference multiplied by the speedometer indicated speed. Depending on the vehicle manufacturer and the transmission type and manufacturer, there are speedometer gears available to correct the indicated speed. Check with your manufacturer's parts supplier."
Source: by blueovaltrucks.com
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Speedometer Calibration Program (drive or driven gear, gear ratio, rear tire diameter, speedometer revolutions)
Source: by Bowling & Grippo bgsoflex.com
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Speedometer Gear Change Calculator w/Ford Part Numbers, Colors, & Tooth Count
Source: by Chris B (Blue, bronco boy) at 3.bc.sympatico.ca
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Spring, Coil Rate
Source: by therangerstation.com
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Spring, Leaf
Source: by therangerstation.com
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Springs - weight & percentage
Source: by proshocks.com
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Temperatures - F to C; measurements - dec. to metric
Source: by heatshieldproducts.com
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The Calculator Home Page
Source: by dml via dakota-truck.net
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Tire Change, gear ratio, mph, ring & pinion
Source: by intercotire.com
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Tire Diameter Calculator; "...You need to know your actual tire diameter in order to work with the RPM calculator relevant to gear ratio. Tire specifications usually follow a three number format, such as 275/75R16, where 275 is the WIDTH of the tire tread in millimeters, 75 is the ASPECT (or percentage of tread width to yield the sidewall height), and 16 is the WHEEL diameter. Using the numbers in this example, you�fll get a tire height of 32.24��. The calculated value should be used only as a guideline for RPM calculations. Quite often, if you measure your tire diameter from the ground to the top of the tire, it measures less than the calculated value. It may �ground up�h closer to the calculated value while in motion. Tires with identical specifications that are made by different manufacturers may also have different actual diameters. Truck and off road tires may have a specification like 30�~9.5R15, where 30 is the tire diameter, 9.50 is the tread width and 15 is the wheel diameter. You don�ft need the tire diameter calculator in this case..."
Source: by differentials.com
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Tire Height Calculator (based on width, aspect & size)
Source: by jawsgear.com
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Used Tire Calculator: Use this chart to accurately calculate the price for selling or buying used tires
Source: by performanceunlimited.com
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Voltage Drop in a Power Cable, Audio
Source: by HO� highoutputalternator.com
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Volume, Lengths, weights, etc.
Source: by bobistheoilguy.com
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Volume, Weight, pressure, temp., time, speed, energy, power
Source: by arizonadrivelines.com
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Wheel & Tire Motion
Source: by csgnetwork.com
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