engineering explained: Can gearing make your car faster. video proof - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

theman233 · 04-23-2017, 03:32 PM

Thought this video should be posted. I know there's been some threads regarding gear changes and there's always people that claim it doesn't matter. This video goes pretty in-depth with results on what happens when you change the gear ratio on a Honda S2000, not the same car, but results would be similar.

[ame="https://www.youtube.com/watch?v=DHhY_z1bYA4"]Can Gearing Make Your Car Faster? With Proof! - YouTube[/ame]

nikitopo · 04-23-2017, 04:10 PM

This is not a proof that a shorter differential is always better. He chose on purpose to test the range 10-60 mph, because it favors the 4.44 differential. If he chose to test the range 10-65 mph or 10-68 mph, the results would be entirely different because with the 4.44 differential he would have to use the 3rd gear. Whatever kind of advantage would be almost lost in this 5 or 8 mph difference. I've already explained this to him a long time ago, but he refuses to accept it.

The only thing I can agree with him is that with this change the car is more fun.

stevesnj · 04-23-2017, 08:33 PM

More mechanical torque is always nice but only helps to a certain point. Too much gearing could be bad. I may just reduce my tire diameter 7.51% and save some $$ lol

04-23-2017, 03:32 PM	#1
theman233 Member Join Date: May 2016 Drives: 2013 subaru brz Location: indiana Posts: 10 Thanks: 0 Thanked 7 Times in 2 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	engineering explained: Can gearing make your car faster. video proof Thought this video should be posted. I know there's been some threads regarding gear changes and there's always people that claim it doesn't matter. This video goes pretty in-depth with results on what happens when you change the gear ratio on a Honda S2000, not the same car, but results would be similar. [ame="https://www.youtube.com/watch?v=DHhY_z1bYA4"]Can Gearing Make Your Car Faster? With Proof! - YouTube[/ame]

04-23-2017, 08:33 PM	#3
stevesnj Senior Member Join Date: May 2013 Drives: 2016 FR-S Oceanic Blue Location: Southern NJ Posts: 2,958 Thanks: 2,158 Thanked 1,601 Times in 923 Posts Mentioned: 30 Post(s) Tagged: 2 Thread(s)	More mechanical torque is always nice but only helps to a certain point. Too much gearing could be bad. I may just reduce my tire diameter 7.51% and save some $$ lol __________________ My 2016 Build thread TRD Exhaust with custom quad tips, TRD Lowering Springs,TRD Quick shifter,LED;DRL, Projectors, and turn signals. Re-badge, 86 Nanny, WinmaxW2 Pads, K&N Drop In, Antenna delete

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04-23-2017, 04:10 PM	#2
nikitopo Senior Member Join Date: Mar 2014 Drives: '15 BRZ RA Location: Greece Posts: 3,787 Thanks: 2,417 Thanked 1,947 Times in 1,263 Posts Mentioned: 29 Post(s) Tagged: 0 Thread(s)	This is not a proof that a shorter differential is always better. He chose on purpose to test the range 10-60 mph, because it favors the 4.44 differential. If he chose to test the range 10-65 mph or 10-68 mph, the results would be entirely different because with the 4.44 differential he would have to use the 3rd gear. Whatever kind of advantage would be almost lost in this 5 or 8 mph difference. I've already explained this to him a long time ago, but he refuses to accept it. The only thing I can agree with him is that with this change the car is more fun.

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