Author Topic: Crawler gears!  (Read 922 times)

TOASTY

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Crawler gears!
« on: July 06, 2018, 05:48:45 PM »
 Here's another crawler gear video, same obstacle from two angles, both trucks have front and rear lockers, 35's and about the same amount of lift. Obviously my truck (the blue one) has crawler gears. It really shows how much control you gain with gears and that you break traction less which translates to less broken parts (from shock loads) and lower operating temps (not working as hard). I know this is a rock crawling video but it applies to overlanding as well, on overland trips we carry a lot of gear and even on my trucks with small tires the T-case gears really earn their keep. For those of you who camped with me in the mountains north of LA last summer you experienced it first hand.
What I'm talking about is heat and power, the guys without gears experienced repeated overheating all the way up the mountain while us geared down dudes casually drove up the steep forest road with A/C on in the 105 degree heat. The overheating trucks were largely stock too, you can still create a serious load on your drivetrain with just your camping gear and a long grade. If you plan on 4 wheeling you should really consider regearing your transfer case especially if you have 33-35" tires or heavy things like drawer systems or pulling trailers offroad. These trucks were built to go fast offroad so they're not geared so great for low speed offroad drives. Gear upgrades come from Marks4wd in Australia, and can be purchased from Adventuredrivendesign.com or special ordered from Advancedadapters.com or sometimes directly from Marks4wd.com depending on how they're feeling that day. For the Gen 2 i recommend 2.72 gears for 33's or less and 3.15's for larger than 33's, carrying a lot of gear, towing offroad or if you plan on going bigger in the future.

https://youtu.be/FZGcrs62rr8

jaccox

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Re: Crawler gears!
« Reply #1 on: July 06, 2018, 09:16:40 PM »
This modification is in my foreseeable future I can guarantee that.
1999 Montero. 33x10.5x15 General X3's. 4.90's w/rear locker. Full armor. ADD idler arm. ADD 1.5" complete lift. Siberiean Bushings everywhere. 150W alternator with upgraded 4 AWG leads and grounds. 2nd Battery in the rear for camping stuffs to come.

TOASTY

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Re: Crawler gears!
« Reply #2 on: July 06, 2018, 09:23:12 PM »
 Worth every penny!

jaccox

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Re: Crawler gears!
« Reply #3 on: July 07, 2018, 08:02:27 AM »
  Quick question. You believe 3.15 with 33s would hinder performance or just be too much reduction and make it unpleasant to drive?
« Last Edit: July 07, 2018, 11:12:18 AM by TOASTY »
1999 Montero. 33x10.5x15 General X3's. 4.90's w/rear locker. Full armor. ADD idler arm. ADD 1.5" complete lift. Siberiean Bushings everywhere. 150W alternator with upgraded 4 AWG leads and grounds. 2nd Battery in the rear for camping stuffs to come.

Shovel

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Re: Crawler gears!
« Reply #4 on: July 07, 2018, 10:47:54 AM »
Aww I'm not cool enough for crawler gears.   

TOASTY

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Re: Crawler gears!
« Reply #5 on: July 07, 2018, 11:12:43 AM »
 Definitely will not hinder performance but it will be much slower in 4 low, i recall about 15mph in 3rd and if you trick the low range detent for 4th gear low range about 25mph or so. At which point you would use 4 hi, the only issue with crawler gears is that most people don't have them and tend to haul ass in low range. So if your group is mostly speed demons you might be the guy at the end of the line.


 You're totally cool Shovel!

jaccox

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Re: Crawler gears!
« Reply #6 on: July 09, 2018, 07:24:47 AM »
Definitely will not hinder performance but it will be much slower in 4 low, i recall about 15mph in 3rd and if you trick the low range detent for 4th gear low range about 25mph or so. At which point you would use 4 hi, the only issue with crawler gears is that most people don't have them and tend to haul ass in low range. So if your group is mostly speed demons you might be the guy at the end of the line.
Being the caboose is means for getting a snorkel right? lol
1999 Montero. 33x10.5x15 General X3's. 4.90's w/rear locker. Full armor. ADD idler arm. ADD 1.5" complete lift. Siberiean Bushings everywhere. 150W alternator with upgraded 4 AWG leads and grounds. 2nd Battery in the rear for camping stuffs to come.

GEN 1

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Re: Crawler gears!
« Reply #7 on: April 23, 2019, 04:13:17 AM »
I will get a chance to use my "crawlers" on the up coming trip as there is an off road Park in Ely Iowa that I will be attempting when I go home, I am anxious to see the difference.

na3s

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Re: Crawler gears!
« Reply #8 on: April 23, 2019, 09:38:35 PM »
Definitely will not hinder performance but it will be much slower in 4 low, i recall about 15mph in 3rd and if you trick the low range detent for 4th gear low range about 25mph or so. At which point you would use 4 hi, the only issue with crawler gears is that most people don't have them and tend to haul ass in low range. So if your group is mostly speed demons you might be the guy at the end of the line.

Other than the reduced speed mentioned, is there any other reason one would opt for 2.7:1 vs 3.15:1?

The transfer case and shift fork need to have some material removed in order to clear the 3.15:1 gears, does that also apply for the 2.7:1 gears? https://www.adventuredrivendesign.com/forums/index.php?topic=368.0

Would having a manual vs auto, or diesel vs gas impact the decision to run 3.15:1 vs 2.7:1, or vice versa?

This thread mentions the 2.7:1 being a better all around 4WD/overlanding set up vs the 3.15:1, being oriented more toward legit rock crawling... https://www2.pajeroclub.com.au/forum/showthread.php?t=57575
« Last Edit: April 23, 2019, 10:11:02 PM by na3s »

ChargerX3

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Re: Crawler gears!
« Reply #9 on: April 24, 2019, 08:27:56 AM »
Whats the stock gear ratio and is the 5 speed manual any different than the auto?

na3s

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Re: Crawler gears!
« Reply #10 on: April 24, 2019, 09:07:38 AM »
In the V5MT1 5mt the low range gear is 1.925:1, which I'm near certain is the same as most autos, although there are some models/configurations which might be 1.9:1... http://www.4x4extremesports.com/index.php?http://www.4x4extremesports.com/transfercase_gears.php

Someone please correct me if I'm wrong.

ChargerX3

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Re: Crawler gears!
« Reply #11 on: April 24, 2019, 10:10:45 AM »
Ok, so similar across the board.