Gas mileage INCREASED with aftermarket gears
04-19-2005, 01:24 PM
#22
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At constant car velocity on level ground, the 'load' on the engine exactly equals the sum of all frictions: wind, tire, drivetrain, and engine. Increased revs increase engine (and transmission) friction. All other frictions obviously don't change, so you get worse mileage at higher rpms, no way around it.
If anyone is so convinced that higher revs equal better mileage, take a long trip in 5th gear.
It is correct that all gears are affected equally by the multiplier rear gear, but what does that gain you? Think of a hypothetical gear swap that exactly changed 6th into 5th, 5th into 4th, etc. 1st gear would be great, but performance hasn't changed in the mid-gears since the unmodified car already has the same ability.
I looked up the G6: highway mileage drops from 32 to 29 when the rear axle ratio is increased from 3.05 to 3.29.
If anyone is so convinced that higher revs equal better mileage, take a long trip in 5th gear.
It is correct that all gears are affected equally by the multiplier rear gear, but what does that gain you? Think of a hypothetical gear swap that exactly changed 6th into 5th, 5th into 4th, etc. 1st gear would be great, but performance hasn't changed in the mid-gears since the unmodified car already has the same ability.
I looked up the G6: highway mileage drops from 32 to 29 when the rear axle ratio is increased from 3.05 to 3.29.
04-19-2005, 03:27 PM
#24
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What does that have to do with what I said?
You still control throttle position with drive-by-wire. My brother's car has it...
You still control throttle position with drive-by-wire. My brother's car has it...
04-19-2005, 03:32 PM
#25
he is talking about city and overall mileage...not just highway guys...
DUH, its OBVIOUS that highway mileage is negatively affected with gears...he is not talking about that...city is being increased...probably less throtle needed and gets into a "higher" gear faster
DUH, its OBVIOUS that highway mileage is negatively affected with gears...he is not talking about that...city is being increased...probably less throtle needed and gets into a "higher" gear faster
04-19-2005, 03:37 PM
#26
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Originally Posted by aggie,Apr 19 2005, 06:24 AM
I don't see how you can get better mileage with the new differential gears unless you drive slower, which isn't likely.
04-19-2005, 04:15 PM
#27
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your overall gas mileage for a tank of gas isn't mainly determined by the average mpg on the highway.
it is more so determined by the number of times you get your car rolling at a stop, which will bring down the mpg more significantly than what you average on the highway.
it is more so determined by the number of times you get your car rolling at a stop, which will bring down the mpg more significantly than what you average on the highway.
04-19-2005, 04:44 PM
#28
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AHHHHHHHHHH YOUR ALL MORONS... the trottle doesnt control how much gas your using, it controls how open the air intake to the engine is! the engine has to expend a certain amount of energy to get to a certain speed (1/2 mv^2, if you want the physics of it) the lower the revs, the more efficient the engine is at generating that energy (less friction) PERIOD. this ambigous "working less hard" BS has no basis in reality. Go do some reading before you spoat of your baseless opinions.
04-19-2005, 05:22 PM
#29
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Originally Posted by Caffeinated21,Apr 19 2005, 04:44 PM
AHHHHHHHHHH YOUR ALL MORONS... the trottle doesnt control how much gas your using, it controls how open the air intake to the engine is! the engine has to expend a certain amount of energy to get to a certain speed (1/2 mv^2, if you want the physics of it) the lower the revs, the more efficient the engine is at generating that energy (less friction) PERIOD. this ambigous "working less hard" BS has no basis in reality. Go do some reading before you spoat of your baseless opinions.
04-19-2005, 05:27 PM
#30
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^
although i'm not really sure what he is saying makes sense...
doesn't the higher gear ratio expend LESS energy to get to 40mph than the stock gears?
an analogy would be like driving on a decline...
although i'm not really sure what he is saying makes sense...
doesn't the higher gear ratio expend LESS energy to get to 40mph than the stock gears?
an analogy would be like driving on a decline...