Gears....??

[04durangoSLT]

so a KJ sport comes with 4.10 gears
but the KJ Renegade comes with 3.55 gears


i never really understood gearing... can someone explain bigger/smaller... what gears are good, etc

[HemiDak]

4.10's are better than 3.55's no matter what. There's no comparison between the two.

[brett6485]

Gears make a multiplier affect. If you have 4.10's, for every turn of the driveshaft, ur axle spins 4.10 times. Steaper gears net greater accceleration, but lower top speed and higher RPM's on the freeway.

[04durangoSLT]

Gears make a multiplier affect. If you have 4.10's, for every turn of the driveshaft, ur axle spins 4.10 times. Steaper gears net greater accceleration, but lower top speed and higher RPM's on the freeway.


so the Renegade(3.55) is faster on the freeway, but the Sport(4.10) has better acceleration



and how does this relate to offroading?

[HemiDak]

4.10's are much better than 3.55's for offroading.....especially if you get bigger tires.

[brett6485]

so the Renegade(3.55) is faster on the freeway, but the Sport(4.10) has better acceleration



and how does this relate to offroading?

Pretty much, and has yella said, steaper gears are better for off roading. Larger tires reduce the multiplication affect, so steaper gears will counter act that. Also when crawling and such, being able to get up and go is important, unless you like ur engine bogging down.

[HemiDak]

Pretty much, and has yella said, steaper gears are better for off roading. Larger tires reduce the multiplication affect, so steaper gears will counter act that. Also when crawling and such, being able to get up and go is important, unless you like ur engine bogging down.

Very well said. :biggthump

[brett6485]

Very well said. :biggthump

I try :) Hey how do you like the Koda/Thunderform setup? Thinking about going that route.

[HemiDak]

I like it a lot. It's just about the perfect amount of bass I'm into now. Still hits nicely loud, while still hitting all the low notes I need to hear. If took a bit of "customizing" to make the Kodas fit, but it sounds perfect and would go with the same setup again if I had to.

[ScojoDak]

Gears make a multiplier affect. If you have 4.10's, for every turn of the driveshaft, ur axle spins 4.10 times.Not to be a dick and that, but it's the opposite that takes place. The driveshaft revolves 4.1 times to the tires one revolution. If your case was true, could you imagine your speed when your tranny goes into one-to-one mode.

[04durangoSLT]

Not to be a dick and that, but it's the opposite that takes place. The driveshaft revolves 4.1 times to the tires one revolution. If your case was true, could you imagine your speed when your tranny goes into one-to-one mode.


i thought i understood it, but this guy came and screwed me all up...

[HemiDak]

What Scojo was trying to say, is that with 3.55 gears, your driveshaft will spin 3.55 times for every turn it makes the tires spin 1 time. With 4.10 gears, the driveshaft will spin 4.10 times for every time the tires spin 1 time. Hope that helps a bit...

[ScojoDak]

i thought i understood it, but this guy came and screwed me all up...It's what I do best bro. :joke:

[04durangoSLT]

What Scojo was trying to say, is that with 3.55 gears, your driveshaft will spin 3.55 times for every turn it makes the tires spin 1 time. With 4.10 gears, the driveshaft will spin 4.10 times for every time the tires spin 1 time. Hope that helps a bit...


isnt that the opposite from what was said before??

[brett6485]

Not to be a dick and that, but it's the opposite that takes place. The driveshaft revolves 4.1 times to the tires one revolution. If your case was true, could you imagine your speed when your tranny goes into one-to-one mode.

thanx, thats what I ment. otherwise my other coments make no sense

[04durangoSLT]

so is it still better to have higher gearing for offroading???

[brett6485]

Yes, if your into offroading, you want to go with either 4.10's or 4.56's :biggthump

[04durangoSLT]

ok thanks, i have 4.10 on my Jeep.. not sure what my brand new Durango has... just got it today, she is beautiful

[brett6485]

check the glove box, usually says in there ;)

[HemiDak]

so is it still better to have higher gearing for offroading???

Well, a higher numerical number yes, but it's actually a lower gear, because of the ratio. A "higher" gear would be like a 3.55 or a 3.42 compared to a 4.10 or a 4.56 being a "lower" gear. ;)

[04durangoSLT]

3.92 in my Durango, 4.10 in my Jeep.



im just lost on y would jeep put the 4.10 in the sport model and the 3.55 in the renegade model