Rear differential gear ratio explained
What rearend gear ratio do I have?
There are a few ways that you can find your rear end gear ratio. You could count the number of teeth on the ring gear then divide that number by the number of teeth on the pinion gear. An example would be if the ring gear has 37 teeth and the pinion gear has 9 teeth, the gear ratio will be 4.11:1.
Is a rear differential the same as a rear axle?
The purpose for a differential axle is to multiply the amount of power that is inputted and create more power at the output end of the axle. A differential axle is an axle that incorporates a set of drive gears in the axle in the same manner as a rear-wheel drive vehicle uses a gear-equipped axle to power the vehicle.
What do differential gear ratios measure?
Differential Gear Ratio determines the number of times the drive shaft (or pinion) will rotate for each turn of the wheels (or ring gear). So if you have a 3.73:1 gear ratio the drive shaft turns 3.73 times for every turn of the wheel. Gear ratio is calculated by dividing the number of teeth on the ring gear by the number of teeth on the pinion ...
Which rear end gear ratio?
This vibration isn’t noticeable when the engine is idling or accelerating through the gears but is often misdiagnosed as a driveshaft out of balance of out of phase. The proper rear-end gear ratio can be selected using the following simple formulas whether using a direct-drive (1to1) or overdrive (usually 30%) transmission.
[PDF File]Differentials and Drive Axles Study Notes
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Gear Ratios • The overall gear ratio is equal to the ratio of the ring and pinion gears multiplied by the ratio of the gear the transmission is in • Numerically low gears are said to be “high” • Numerically high gears are said to be “low” • Gear ratios are usually selected to provide the best combination of performance and economy
[PDF File]Identifying Nissan Axle Ratios - Automotive Tech Info
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correctly identify. The gear ratio of 2.937:1, the part number, and even pinion gear is a gear ratio of 2.0:1. the original Dana part number are all right there for you. Too easy. Of course, actual gear sets will not be quite that easy number- wise.
[PDF File]Eaton Differentials Owner’s Manual - Summit Racing Equipment
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gear sets. 225S10 differential replaces the conventional differential internals used in certain 1973 - present GM axles. If it is to be installed in a GM axle equipped with an optional Eaton differential, it will also be necessary to purchase a new gear support case assembly, GM #6258336 or #6258340, depending upon gear ratio. 187SL173A Axle serial
[PDF File]Eaton Truetrac differential brochure
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The Truetrac can transfer up to 3.5 times more torque to the high traction wheel. This torque transfer ratio (called the bias ratio) is accomplished by using helical side gears and pinions. The bias ratio is the result of pressure exerted by the side gears and pinions against the surface of the differential case.
[PDF File]Eaton NoSPIN differential application list
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Single Rear Axles 70HD, 70-2U 4.10 & down gear ratios 1.50” 35 (3) 225SL-58B ... *Requires case change: Use conventional differential case assembly. Tandem Axles
[PDF File]Differential ID Chart - Summit Racing Equipment
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Chrysler 9.25" - Rear Ring Gear Diameter: 9.25" Chrysler 9.25” (AAM) - Front - 2003 & up 3/4 and 1-Ton Pinion Diameter / Spline: 1.875" / 29 Ring Gear Diameter: 9.25” Ring Gear Bolts: (12) 7/16"x18 ('10 and Earlier ) Pinion Diameter / Spline: 1.875” / 30 Ring Gear Bolts: (12) 14mmx1.0 ('11 and Later ) Ring Gear Bolts: (12) 12mm x 1.5 RH
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