Lower low range

Submitted: Wednesday, Jun 25, 2003 at 23:49
ThreadID: 5665 Views:1281 Replies:4 FollowUps:7
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Hi all

Just been reading all the posts about getting lower low range gears, and just think it might need clarifing, i know this might start a argument but this is what ive worked out.

The rule for going up hills is use second low, this is because first low is to torquey, and the torque exceeds the availiable traction, this equals wheel spin. Im positive about this because ive tried 1st low up a hill(it was the first and last time :) So unless you have dramaticaly changed your tyre diameter have a lower low range will just be detrimental to your 4by.

Correct me if ime wrong cause im not getting gears because of this reason.

Regards Ben.

..................Insert witty comment here.......................

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Reply By: Truckster (Vic) - Thursday, Jun 26, 2003 at 00:05

Thursday, Jun 26, 2003 at 00:05
"The rule for going up hills is use second low, this is because first low is to torquey"

To me, there is no set rule, every hill is different.

So are conditions, drivers, cars, tires, motors, weight, ground, etc are different. too many variables.

You should judge each hill when you get to them, and then go from there.

" So unless you have dramaticaly changed your tyre diameter have a lower low range will just be detrimental to your 4by. "

Nope. you can put smaller tires on, its just for different terrains, some people like serious rock crawling, so they need LOW LOW gearing.. Look at XRCC, Tuff Truck challanges. When your doing stuff like that you NEED LOW LOW!
AnswerID: 23531

Follow Up By: Suzuki Viagra - Thursday, Jun 26, 2003 at 00:13

Thursday, Jun 26, 2003 at 00:13
Exactly right - depends on availble traction, torque approach speed etc.

I usually use 1st gear low for anything, then if that fails, 2nd gear and more moomentum and revs.

And yeah I consider a 15% radius increas to be a radical change........

I would like a lower LOW as lower approach speed = less potential damage......

Only rockhoppper hill do for me - no possible diff gearing swaps :(
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FollowupID: 15721

Reply By: Hendo - Thursday, Jun 26, 2003 at 05:40

Thursday, Jun 26, 2003 at 05:40
Ben - there are no hard and fast rules. Before I had a (front) difflock (GQ Patrol, with a good rear LSD), 2nd gear low was the go. Now, I walk up slowly, in low first if it is a steep hill, particularly if it is rocky. Each hill is different, and now I have superior traction. Rock crawler gears simply mean that you can walk very slowly up a bumpy/rocky track. Tyres, engine, weight, rain, etc all make a difference.
Cheers

Hendo
AnswerID: 23538

Reply By: Member - Lex - Thursday, Jun 26, 2003 at 07:27

Thursday, Jun 26, 2003 at 07:27
For me the biggest advantage of a 'Rockhoper' setup is not so much the going up but the coming down. Having an auto with a low/low that was always a bit too high to descend steep slopes without having to continually use brakes was disconcerting to say the least. Now low/low is a good crawler gear where I can descend with a lot more confidence.
AnswerID: 23540

Follow Up By: Truckster (Vic) - Thursday, Jun 26, 2003 at 10:53

Thursday, Jun 26, 2003 at 10:53
Agree with you there.. The only downfall of an Auto is DOWNHILL!

No engine braking for the querying
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FollowupID: 15740

Follow Up By: Member -BJ (Sydney) - Thursday, Jun 26, 2003 at 16:37

Thursday, Jun 26, 2003 at 16:37
Do's the rockhopper setup make much difference to the auto as i have thought of changing on my 3.0tdi Patrol. Regards Bob
27th June Gulf trip
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FollowupID: 15756

Follow Up By: Member - Lex - Thursday, Jun 26, 2003 at 18:11

Thursday, Jun 26, 2003 at 18:11
BJ The Rockhoppers have transformed the car -excellent low range gearing-but not so low that there is a great gap between high first and low top.They just add that degree of control to what is basically a great package ie. Turbo Diesel/Auto Transmission
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FollowupID: 15762

Follow Up By: Truckster (Vic) - Thursday, Jun 26, 2003 at 22:06

Thursday, Jun 26, 2003 at 22:06
BJ,

Lex says it all. When I get the $ Im there!
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FollowupID: 15777

Follow Up By: Member -BJ (Sydney) - Friday, Jun 27, 2003 at 08:04

Friday, Jun 27, 2003 at 08:04
Thanks Lex. Looks like my next additionRegards Bob
27th June Gulf trip
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FollowupID: 15800

Reply By: Voxson (Adelaide) - Thursday, Jun 26, 2003 at 07:51

Thursday, Jun 26, 2003 at 07:51
I think you will find if you are standing at the base of a 35% incline with a zig zig rutt up the guts with rocks protruding through 12" you will find 1st gear "L" the one to use...

2nd gear "L" would aid to some damage and also some over challenging driving..._____________________________________________
Countin the days till July 4th. *Cape York Trip*
_____________________________________________
AnswerID: 23544

Follow Up By: Truckster (Vic) - Thursday, Jun 26, 2003 at 10:46

Thursday, Jun 26, 2003 at 10:46
But it would be good to watch!
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FollowupID: 15738

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