93transam1234

Maybe i am just retarted today but i had just got a rear with 3:42's to replace my 2:73's and was looking at it. for the 2:73's it takes only 2.73 turns of the drive shaft to turn the tires 1 whole rotation and with 3:42's it takes 3.42 turns of the drive shaft to turn the tire.

Here is my brain fart. why whould it be better to have to turn the drive shaft more times to get one full tire rotation?


PLEASE HELP

SLeePer350

you utilize your already existing power and the higher number (lower gear) will make you reach that quicker. in doing so, you incur a lower top speed though which is what physically has to happen as the trade off for improved acceleration through your rpm range.

have you ever noticed that a 2.73 gear will have a HUGE top speed, but it will take forever to get there??

however a 4.10 will be amazing quicker, as far as acceleration, but you will quickly top out every gear and thus when you finally reach 6th gear you are maxing out at a lower mph.

i do reccomend gears. they are an awesome bang for the buck. last time i checked our cars are known for 1/4 miles and street racing, etc - NOT land speed records.

p.s.--i love my 4.10s

Injuneer

Think of the gear ratio as a "torque multiplication factor".... because that's what it is. The 2.73 gear multiplies your driveshaft torque by 2.73.... the 3.42 gear multiplies your DS torque by 3.42. You end up with 25% more torque at the rear wheels. That means you nave 25% more force at the tires pushing your car forward when it accelerates. F=MA..... 25% more torque means 25% more acceleration.

Only problem is, if you have the same engine RPM limit, you "run out of gear" a lot faster, at a 25% lower road speed. Its a tradeoff, that usually improves ET's, but only provides a minimal increase in MPH.

You can also see where the increased torque multiplication is often enough to render your existing tires "traction challenged".

93transam1234

I kinda understand that i just want to know how it works like that. I mean it takes more engine rotation to turn the tire with 3:42's than it does with 2:73's

Does that make the RPM's go up faster or what?

BadAssed93Z

yes

your rpm will be noticeably higher than before at speed.

this is why you lose gas mileage.

but my 3.73's were worth every penny.

billygoat

do u own a mountain bike or any bike with say 18 or 21 speeds
go ride it and take note of the gears u are in and how it affect u having to pedel. pick any of the three gears up front, then go all the way to the smallest in back and try taking off.... then go to the biggest in back and try taking off ... maby this will hepl u to understand, oh and pedal as fast as u can in each of those gears and note different top end speed,