Author Topic: dual case rules? (Read 5784 times)

toyotamobing · « **on:** Jun 24, 2008, 03:10:01 PM »

Ive been thinking about getting dual cases and/or tcase gears, and I'm wondering what you can and cant do with them. some questions are can you only gear the rear case? for example if i had gears in my tcase and just wanted to add a 2nd crawl box? and do you have to have the lower gears in the rear? just all around general knowledge and "rules" of having and running duals.

UKMyers · « **Reply #1 on:** Jun 24, 2008, 03:29:44 PM »

http://www.marlincrawler.com/htm/support.htm

Edumicate yourself

BLACKDOG · « **Reply #2 on:** Jun 24, 2008, 04:01:51 PM »

you can gear either the front, rear, both or leave them stock.

BigMike · « **Reply #3 on:** Jun 24, 2008, 04:48:00 PM »

Don't press the clutch in while engaged in double low while the truck is moving down hill purely by gravity.

EarlKann · « **Reply #4 on:** Jun 24, 2008, 04:56:20 PM »

Quote from: BigMike on Jun 24, 2008, 04:48:00 PM

Don't press the clutch in while engaged in double low while the truck is moving down hill purely by gravity.

Unless you like replacing clutches!

Duffil · « **Reply #5 on:** Jun 24, 2008, 08:00:02 PM »

you can gear either case, but the accepted "norm" is to only gear the rear case, to minimize the amount of parts that see a torque increase...

Also, if you buy your gears and the doubler adapter at the same time, go with 23 spline stuff in the rear case...same price and a bit stronger.

toyotamobing · « **Reply #6 on:** Jun 26, 2008, 01:15:21 PM »

i have a forward shift tcase now so do i need a top shift for a second case or does it matter?

KDXSR5 · « **Reply #7 on:** Jun 26, 2008, 01:37:50 PM »

From what I understand, you need the front crawl box to use the same shifter setup as your transmission/t-case setup originally used (foward shift or top shift depending upon transmission), and the rear case must be top shift.

toyotamobing · « **Reply #8 on:** Jun 26, 2008, 01:50:38 PM »

ok thats what i thought...

Volcom · « **Reply #9 on:** Jun 27, 2008, 12:30:18 PM »

Rule #1 - You will end up at the back of the pack on trail runs. The Jeep guys hate how slow you can move on the trail

Rule #2 - Jeep guys will be envious of your super low gear ratio after watching you climb up huge rocks without slipping a tire

toyotamobing · « **Reply #10 on:** Jun 27, 2008, 12:48:26 PM »

i like those rules...

what are some more does and donts with dual cases?

Rocksurfer · « **Reply #11 on:** Jun 27, 2008, 07:21:02 PM »

Don't let Jeeps pass you on the trail, make them wait.

Taunt them by saying try and follow me.

porkchop · « **Reply #12 on:** Jun 28, 2008, 08:44:07 PM »

Rockcrawlintoy · « **Reply #13 on:** Jun 28, 2008, 09:42:09 PM »

dont do 2wd lo lo burn outs. ring gears wont last

Yoat Goat · « **Reply #14 on:** Jun 28, 2008, 10:45:13 PM »

Haha! Funny post!

toy4x4ota · « **Reply #15 on:** Jun 29, 2008, 01:22:59 PM »

im pretty sure you dont need a top shift for the rear, you can change out the shift rails and just remove the block off plate and the foward shift becomes a top shift. someone correct me if i am wrong

KDXSR5 · « **Reply #16 on:** Jun 29, 2008, 01:25:07 PM »

Umm... that turns it in to a top shift, so yes you need a top shift for the rear.

Either way it must be a top shift in the end.

toy4x4ota · « **Reply #17 on:** Jul 02, 2008, 11:08:45 PM »

Quote from: KDXSR5 on Jun 29, 2008, 01:25:07 PM

Umm... that turns it in to a top shift, so yes you need a top shift for the rear. Either way it must be a top shift in the end.

ya but i was saying you dont need to get a top shift for the rear, you can make it one

KDXSR5 · « **Reply #18 on:** Jul 03, 2008, 10:38:13 AM »

FILDO · « **Reply #19 on:** Jul 11, 2008, 03:45:30 PM »

Quote from: BigMike on Jun 24, 2008, 04:48:00 PM

Don't press the clutch in while engaged in double low while the truck is moving down hill purely by gravity.

Just wondering, why does this ruin the clutch?

emsvitil · « **Reply #20 on:** Jul 11, 2008, 03:53:39 PM »

Quote from: FILDO on Jul 11, 2008, 03:45:30 PM

Just wondering, why does this ruin the clutch?

Clutches aren't designed to spin at 20,000 rpm............

WHITE_TRASH · « **Reply #21 on:** Jul 11, 2008, 03:59:32 PM »

Here's a scenario with purely made up figures....

If you are in 4th gear (1:1 out put) double low at 5k you are going 10 mph

So if you are headed down a hill in 4th and double low and its not fast enough and you hit the clutch with it still in gear figure the clutch disk will be spinning 10k rpm's at 20 mph... the disc will explode in the scenario...

KDXSR5 · « **Reply #22 on:** Jul 11, 2008, 04:28:58 PM »

FILDO · « **Reply #23 on:** Jul 11, 2008, 05:19:32 PM »

Quote from: WHITE_TRASH on Jul 11, 2008, 03:59:32 PM

Here's a scenario with purely made up figures....

If you are in 4th gear (1:1 out put) double low at 5k you are going 10 mph

So if you are headed down a hill in 4th and double low and its not fast enough and you hit the clutch with it still in gear figure the clutch disk will be spinning 10k rpm's at 20 mph... the disc will explode in the scenario...

So when you need to stop while coasting down hill and in gear, what do you do?

Wermz84 · « **Reply #24 on:** Jul 11, 2008, 05:21:16 PM »

Quote from: Volcom on Jun 27, 2008, 12:30:18 PM

Rule #1 - You will end up at the back of the pack on trail runs. The Jeep guys hate how slow you can move on the trail

Rule #2 - Jeep guys will be envious of your super low gear ratio after watching you climb up huge rocks without slipping a tire

slabcs · « **Reply #25 on:** Jul 11, 2008, 05:27:33 PM »

Quote from: FILDO on Jul 11, 2008, 05:19:32 PM

So when you need to stop while coasting down hill and in gear, what do you do?

Push that pedal in the middle?

WHITE_TRASH · « **Reply #26 on:** Jul 11, 2008, 08:55:23 PM »

Quote from: FILDO on Jul 11, 2008, 05:19:32 PM

So when you need to stop while coasting down hill and in gear, what do you do?

If I start a downhill and the rig starts to slide I grab another gear in a t-case.... If you do it quick it won't grind much.

toyotamobing [OP]

toyotamobing [OP]

toyotamobing [OP]

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