What is a gear ratio

jsalzman123 · 04-04-2010, 04:51 PM

What is a gear ratio like when it says 1.57 stuff like that??

Xanthos · 04-04-2010, 05:05 PM

Really simple explanation, but all I have time for right now.

Gears are a way of gaining mechanical advantage. By using a larger gear to turn a smaller one, you turn that smaller gear multiple times for each turn of the first (larger) gear. This creates mechanical advantage, effectively increasing the torque being applied, at the cost of revolutions per unit of time.

The ratio (such as 1.57:1, as in your advantage) is how many turns of the second (usually smaller) gear per turn of the original (usually larger) gear. In rough terms, in equates to how much your torque will be multiplied.
- X

5thGenOwner · 04-04-2010, 05:50 PM

Quote:

Originally Posted by Xanthos

Really simple explanation, but all I have time for right now.

Gears are a way of gaining mechanical advantage. By using a larger gear to turn a smaller one, you turn that smaller gear multiple times for each turn of the first (larger) gear. This creates mechanical advantage, effectively increasing the torque being applied, at the cost of revolutions per unit of time.

The ratio (such as 1.57:1, as in your advantage) is how many turns of the second (usually smaller) gear per turn of the original (usually larger) gear. In rough terms, in equates to how much your torque will be multiplied.
- X

Good explanation, now how about this...

What's the equation, or how do they derive the "Final Drive" numbers? For example, all 2010's are 3.27, but v8 manuals are 3.45. http://www.camaro5.com/forums/wiki.p...tions+%28SS%29

Xanthos · 04-04-2010, 06:02 PM

Quote:

Originally Posted by 5thGenOwner

Good explanation, now how about this...

What's the equation, or how do they derive the "Final Drive" numbers? For example, all 2010's are 3.27, but v8 manuals are 3.45. http://www.camaro5.com/forums/wiki.p...tions+%28SS%29

The final drive ratio is the ratio of the differential gearing. Meaning whatever the transmission gearing is for that gear, multiply it by the final drive for your total gear ratio. So the total gear ratio in first gear of an L99 car is 13.18:1
- X

5thGenOwner · 04-04-2010, 06:15 PM

Quote:

Originally Posted by Xanthos

The final drive ratio is the ratio of the differential gearing. Meaning whatever the transmission gearing is for that gear, multiply it by the final drive for your total gear ratio. So the total gear ratio in first gear of an L99 car is 13.18:1
- X

You rock! (and boy do I show my ignorance well)

Mr Twisty · 04-04-2010, 06:45 PM

When the driveshaft rotates 3.45 times the rear tires will rotate once.... 3.45 to 1... You confused me X

jsalzman123 · 04-04-2010, 11:05 PM

thanks a lot CAMARO MAster, yours was simple but it was the easiest to understand!!! thanks

04-04-2010, 04:51 PM	#1
jsalzman123 Drives: 2010 2SS/RS Victory Red Join Date: Mar 2010 Location: Philaldephia Posts: 51 View My Garage	What is a gear ratio What is a gear ratio like when it says 1.57 stuff like that??

04-04-2010, 05:05 PM	#2
Xanthos PWA Relapse Drives: Formerly-Stick Join Date: Mar 2008 Location: Oklahoma Posts: 12,588 View My Garage	Really simple explanation, but all I have time for right now. Gears are a way of gaining mechanical advantage. By using a larger gear to turn a smaller one, you turn that smaller gear multiple times for each turn of the first (larger) gear. This creates mechanical advantage, effectively increasing the torque being applied, at the cost of revolutions per unit of time. The ratio (such as 1.57:1, as in your advantage) is how many turns of the second (usually smaller) gear per turn of the original (usually larger) gear. In rough terms, in equates to how much your torque will be multiplied. - X __________________ 2017 1LT/RS A8 Hyper Blue Metallic

04-04-2010, 06:45 PM	#6
Mr Twisty Drives: the 2nd amendment home Join Date: May 2008 Location: OK Posts: 14,763	When the driveshaft rotates 3.45 times the rear tires will rotate once.... 3.45 to 1... You confused me X __________________ "They that can give up essential liberty to obtain a little temporary safety deserve neither liberty nor safety." -- Benjamin Franklin lib·er·ty /ˈlibərdē/ noun 1. the state of being free within society from oppressive restrictions imposed by authority on one's way of life, behavior, or political views

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04-04-2010, 11:05 PM	#7
jsalzman123 Drives: 2010 2SS/RS Victory Red Join Date: Mar 2010 Location: Philaldephia Posts: 51 View My Garage	thanks a lot CAMARO MAster, yours was simple but it was the easiest to understand!!! thanks