|07-28-2008 06:33 AM|
well i knew the last part and thank you on the first part i wasn't 100 % sure on that. i knew that 4.11 was lower than 3.07 and so on.. and the rpms will also be changed by tire size. i think i made that clear to understand...but thanks for correcting me....
ohh shit now they know the truth....lol
|07-27-2008 11:09 PM|
yj, I hate to break it to you, but you're gonna have to change your signature.
Gear ratios are written as input:output. If the output is 1, then the 1 isn't written. So, 4.11:1 is the same thing as 4.11. That means that for every 4.11 revolutions of the drive shaft, the wheels will turn once. 3.07 means that for every 3.07 revolutions of the drive shaft, the wheels will turn once.
Lower gears are numerically higher. So, 4.11 is lower than 3.07.
A lower gear ratio will make your RPMs increase faster. This means that you will get into your engines power band quicker. Also, lower gears will transfer more of that power to the wheels. Lower gears will help you crawl over things easier but you lose some top end speed and some overall fuel economy(because the engine has to work harder to maintain the same speed).
|07-27-2008 08:16 PM|
|yjwrangler||if your talking about what i guess you are witch would be the gears in your differentials then re-gearing would be something you might be looking into. your basically changing the amount of travel your getting with the speed of your engine..i.e. if you have 4.11 gears then for ever 11 revolutions of your drive shaft translates into 4 combined revolutions of both wheels. an example of high gears would be 3.55 then lower would be 3.07 then lower would be 4.11 then 4.88....etc. .the whole idea is based around how big your tires are and the gears in your diff because those are the typical variables. if you have bigger tires then you are altering the equation of engine speed to axles then to wheels. alot of people try to base the correct gear ratio by high way engine speed, most people want something like 2500 rpms at 55mph. so somewhere around that now that isn't saying other gear options are wrong, its just based on the individuals needs. if this is your dd i would recommend a more streetable gear ratio. but if this is some trail rig then do whatever you want. there is alot of options as far as a trail rig goes, jsut do whatever. hope that helps.|
|07-26-2008 06:57 PM|
Can anyone describe what lowering the gear ratio actually means? I may have to have it done but im kinda confused exactly what it is.