AussieCJ7
04-07-2002, 10:45 AM
What do u think is the ideal crawl ratio and what is the best way to achieve it eg tera low vs diff ratios vs granny low gearbox
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Wooders
04-07-2002, 07:32 PM
Ideally we'd have 3spd T/cases ....
billsta
05-07-2002, 10:55 AM
twin transfer case :D
Phil
07-07-2002, 11:20 AM
Actually I like the idea of a granny low least that way you'ed have it available at any time not just in lowlow ....... and diff ratios
crawl ratios ... about 70 sounds good
mines ..... 3.83 x 2.62 x 4.56 = 45.7 still a little on the fast side
crawl ratios ... about 70 sounds good
mines ..... 3.83 x 2.62 x 4.56 = 45.7 still a little on the fast side
Wooders
07-07-2002, 08:14 PM
Cody,
2.62?? What the....Your TJ should have 2.72 smile.gif
Actually my ideal setup (aside from 3spd or dual t/cases) would be TH700R4 + Atlas 3.8....
This gives a lowish ratio - but with an auto the crawl ratio is nearly a null point becuase of the torque converter.....But with this setup ideally you'd want nice big discs in each corner to give reasurring stopping :D
2.62?? What the....Your TJ should have 2.72 smile.gif
Actually my ideal setup (aside from 3spd or dual t/cases) would be TH700R4 + Atlas 3.8....
This gives a lowish ratio - but with an auto the crawl ratio is nearly a null point becuase of the torque converter.....But with this setup ideally you'd want nice big discs in each corner to give reasurring stopping :D
dxj
07-07-2002, 08:27 PM
Hi,
I vote for wide ratio 5spd since I always find it a nuisance to stop and change from high to low range and back as the terrain changes. In some ways an auto fixes this but the loss of engine braking is too much for me to give up.
Having a crawler 1st gear retains the control of manual but allows a simple shift when there is a very short obstacle requiring low speed.
I vote for wide ratio 5spd since I always find it a nuisance to stop and change from high to low range and back as the terrain changes. In some ways an auto fixes this but the loss of engine braking is too much for me to give up.
Having a crawler 1st gear retains the control of manual but allows a simple shift when there is a very short obstacle requiring low speed.
Jumbo
08-07-2002, 06:46 AM
Ideal crawl ratio 150:1 or lower.. :D :D
whatever it takes to get there.. tongue.gif
whatever it takes to get there.. tongue.gif
mattc
08-07-2002, 11:54 AM
I forget who told me this and I may have misunderstood but just lower gears in the transfer case and/or gearbox will put extra torque on the drive shafts and joints etc so they may be more suseptable to twisting, breaking etc.
Changing diff ratios puts the torque multiplication after the drive shafts so they are therefore under less load. I guess when engine braking the forces are in the opposite direction but since its only gravity rather than engine power its still a better option.
cheers
MattC
Changing diff ratios puts the torque multiplication after the drive shafts so they are therefore under less load. I guess when engine braking the forces are in the opposite direction but since its only gravity rather than engine power its still a better option.
cheers
MattC
Wooders
08-07-2002, 10:57 PM
That is correct Matt.
Now he's a reall dream for my CJ....
T18 - 6.32:1
Atlas - 4.3:1
Unimog Diff ratio - 2.18:1
Portal reduction - 2.92:1
Total crawls ratio - 173:1
:D :D
Now he's a reall dream for my CJ....
T18 - 6.32:1
Atlas - 4.3:1
Unimog Diff ratio - 2.18:1
Portal reduction - 2.92:1
Total crawls ratio - 173:1
:D :D
Jumbo
09-07-2002, 07:54 AM
hey Wooders now thems the numbers me likes.. :D
Matt N
09-07-2002, 11:09 AM
Dudes,
Put some awsome 28" GSAs back on your rig or switch to 14" rims for an even better tyre selection to really get that crawl ratio down.
All you people mucking around with diff ratios, TeraLows are crazy that sheet just costs too much. Smaller tyres are the way of the future, and they'll help your c of g as well.
Get serious boys fit some 195R14LT Dunlop Adventures, then I'll show you some respect!
Put some awsome 28" GSAs back on your rig or switch to 14" rims for an even better tyre selection to really get that crawl ratio down.
All you people mucking around with diff ratios, TeraLows are crazy that sheet just costs too much. Smaller tyres are the way of the future, and they'll help your c of g as well.
Get serious boys fit some 195R14LT Dunlop Adventures, then I'll show you some respect!
Wooders
09-07-2002, 08:01 PM
How about some of those Gator tyres...or some of the mean looking ATV meats tongue.gif
Jumbo
10-07-2002, 08:07 AM
Hey Matt what's top speed in the TJ running 28's..??? I thought you might know from experience.. tongue.gif
Matt N
10-07-2002, 12:29 PM
you may laugh but with 28s and 4.88diffs and no speedo recalibration you get to the speed limited 160km before you know it , its around 100km/h actual
Jeff
10-07-2002, 09:39 PM
Speed limited at 160? I swear I've gotten it faster than that!
billsta
11-07-2002, 07:35 AM
twinstix, whats transmission do you have?
im hoping to get my jeep crawling close to a 100 by the end of next year :D most likely wont happen, but im alow to dream :D
im hoping to get my jeep crawling close to a 100 by the end of next year :D most likely wont happen, but im alow to dream :D
Matt N
11-07-2002, 11:22 AM
Billsta,
You need a
Klune-V (http://www.klunev.com/)
You need a
Klune-V (http://www.klunev.com/)
AussieCJ7
12-07-2002, 08:00 AM
mmmhh klune :D :D :D
i was poking around their web site and saw a t700r4 klune and jeep dana300 combo
wonder how much drive shaft length in a short wheel base that would leave though ???
sure would be a versitile set up though
i was poking around their web site and saw a t700r4 klune and jeep dana300 combo
wonder how much drive shaft length in a short wheel base that would leave though ???
sure would be a versitile set up though
zzzz
21-07-2002, 08:56 PM
Originally posted by AussieCJ7:
mmmhh klune :D :D :D
i was poking around their web site and saw a t700r4 klune and jeep dana300 combo
wonder how much drive shaft length in a short wheel base that would leave though ???
sure would be a versitile set up though<font size="2" face="Verdana, Helvetica, sans-serif">th700r4 is 1.5" longer than stock jeep 5speed. dana300 is a little shorted than np231 and a klune is around 5-6" i think so you lose a little. Just stick some high pinion axles under there and it doesn't really matter anymore. hehe.
Don't you all think that around 70 or 80 to 1 is the perfect low range for our australian conditions. I am thinking 100:1 is way too low for most of the stuff we do.
mmmhh klune :D :D :D
i was poking around their web site and saw a t700r4 klune and jeep dana300 combo
wonder how much drive shaft length in a short wheel base that would leave though ???
sure would be a versitile set up though<font size="2" face="Verdana, Helvetica, sans-serif">th700r4 is 1.5" longer than stock jeep 5speed. dana300 is a little shorted than np231 and a klune is around 5-6" i think so you lose a little. Just stick some high pinion axles under there and it doesn't really matter anymore. hehe.
Don't you all think that around 70 or 80 to 1 is the perfect low range for our australian conditions. I am thinking 100:1 is way too low for most of the stuff we do.
Wooders
21-07-2002, 09:20 PM
Ummm Zach, Dave's in a CJ remember... So it's already got the D300, it also has a shorter tranny than the TJ (I believe)....
So I'd guess with a set of high pinions he could just connect the t/case to the pinion tongue.gif
So I'd guess with a set of high pinions he could just connect the t/case to the pinion tongue.gif
billsta
22-07-2002, 07:04 AM
shhhh matt.......
i like to think its on the shopping list smile.gif
depends on where i want to go from here :D
dont talk too loud... my accounts person might hear ya :D
[ 22 July 2002, 08:06 PM: Message edited by: billsta ]
i like to think its on the shopping list smile.gif
depends on where i want to go from here :D
dont talk too loud... my accounts person might hear ya :D
[ 22 July 2002, 08:06 PM: Message edited by: billsta ]
Phil
22-07-2002, 07:12 AM
A mate is building a monster truck
specs: cj8 360V8
10speed mitsi g/box 1st 5.86
dana300, dana60's f/r 4.88 with ARBs
44" tires, 22" ground clearance to the cross member.... sits about 1.5 mtrs to the top of the bonnet and its been widened 7.5"
It would look big in anyones rear vision mirror.
specs: cj8 360V8
10speed mitsi g/box 1st 5.86
dana300, dana60's f/r 4.88 with ARBs
44" tires, 22" ground clearance to the cross member.... sits about 1.5 mtrs to the top of the bonnet and its been widened 7.5"
It would look big in anyones rear vision mirror.
Matt N
24-07-2002, 10:39 AM
Cool Cody, tell him to enter Tuff Truck next year.
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