Locker in 4 hi and TCS/TSC2 question.

[johndjmix1]

In this months 4 wheeler mag they explained how to wire the rear locker in a truck (toyota i think) to work independantly of everything. Anyone done this on the h2?

Now before you guys start going with "you want to blow up your diff...." stuff...I realise the risks, but if driven properly its really not a problem. I had an ARB in my old ford pickup year ago. Never had any explosions.

I dont really understand the tcs/tsc2 and touching the brake. From what I understand with the button off (TCS) the h2 computer will brake spinning wheels to get traction. When the button is engaged (tcs2) the hummer will not do this and just allow wheel spin (Good for momentum in mud and such, but would be a disadvantage at low speeds). Am I correct on all that?

Now if thats correct, why would you want to use the brake pedal to disengage the system when you could just hit the button? Confused.

--John

[KenP]

I have never, ever hit that TC button. When the heck should I ever use it? Going through sand and mud?

Seriously, I've NEVER touched that thing in either truck. I'm also usually covering the brake on muddy rocks and such.

[johndjmix1]

I don't get why you would want to hit the brake to disengauge it...sounds like keeping it on is EXACTLY what you would want.

Yea, I know the locker is just an eaton e-locker, so I guess someone has to tell me where that wire terminates and ill just cut it and set up a switch to triger the solinoid.

--John

[Dewi2005]

Originally posted by PhilD:
Sand, mud, any loose surface. In mud you want the wheels to spin to "clean" out, TC2 allows for more spin. In sand, you can get stuck simply because you have one spinning wheel, TC2 will help. Etc, etc.

Sometimes though TCS/TC2 will bring you to a stop, as it not only applies the brakes to the spinning wheel(s), but also limits rpm to 2000 or so. I've become stuck in sand simply because of TCS/TC2. Covering the brake slightly deactivates TCS/TC2 amd let's me go on my merry way. Using 1st gear can also help sometimes too.

OK.. just to make sure we are all talking the same thing.

TC2 = allows additional wheel spin: Must be activated via the TC2 button on the dash.

TCS = applies brakes to spinning wheel(s) and limits RPM to ~2000. TCS is on by default, but can be deactivated by slightly depressing the brake enough to illuminate the brake lamps.

[MarineHawk]

btm

What's BTM?

[PARAGON]

Originally posted by Dewi2005:
<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by PhilD:
Sand, mud, any loose surface. In mud you want the wheels to spin to "clean" out, TC2 allows for more spin. In sand, you can get stuck simply because you have one spinning wheel, TC2 will help. Etc, etc.

Sometimes though TCS/TC2 will bring you to a stop, as it not only applies the brakes to the spinning wheel(s), but also limits rpm to 2000 or so. I've become stuck in sand simply because of TCS/TC2. Covering the brake slightly deactivates TCS/TC2 amd let's me go on my merry way. Using 1st gear can also help sometimes too.

OK.. just to make sure we are all talking the same thing.

TC2 = allows additional wheel spin: Must be activated via the TC2 button on the dash.

TCS = applies brakes to spinning wheel(s) and limits RPM to ~2000. TCS is on by default, but can be deactivated by slightly depressing the brake enough to illuminate the brake lamps. </div></BLOCKQUOTE>chu got it man

[MarineHawk]

I have used the TC2 already when on some mushy stuff. It seems to work better, but I have no empirical evidence yet. I've also covered the brake as per Phil's suggestion, which also seems to work best on mud. As Phil said, only put enough pressure on the brake to get the lights to come on without actually breaking. You can probably get a feel for how much pressure is required by touching the breaks when you have the cruise control on. A light touch will deactiviate the cruise, but, I think, you are not really engaging the brake pad significantly, if at all.

[PARAGON]

Originally posted by MarineHawk:
<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">btm

What's BTM? </div></BLOCKQUOTE>Brake-Throttle Modulate

2 foot driving. Controlling forward progress by keeping the engine at relatively the same RPM but using the brake to control your movement.

It limits wheel spin even better than TCS, makes going over obstacles much more controlled and easier.

[MarineHawk]

Originally posted by PARAGON:
<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by MarineHawk:
<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">btm

What's BTM? </div></BLOCKQUOTE>Brake-Throttle Modulate

2 foot driving. Controlling forward progress by keeping the engine at relatively the same RPM but using the brake to control your movement.

It limits wheel spin even better than TCS, makes going over obstacles much more controlled and easier. </div></BLOCKQUOTE>

Interesting. Sounds like that would take some practice.

[PARAGON]

Originally posted by MarineHawk:
<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by PARAGON:
<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by MarineHawk:
<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">btm

What's BTM? </div></BLOCKQUOTE>Brake-Throttle Modulate

2 foot driving. Controlling forward progress by keeping the engine at relatively the same RPM but using the brake to control your movement.

It limits wheel spin even better than TCS, makes going over obstacles much more controlled and easier. </div></BLOCKQUOTE>

Interesting. Sounds like that would take some practice. </div></BLOCKQUOTE>parking lot curbs or any kind of curb hopping is good practice.

controlling taking a tire up the face of an obstacle and then bringing it back down without a lot of wheel-spin and lurching.

BTM is one of the best things about having an auto vs. some of the Jeeps and other rigs that you see out on the trail. Other rigs running standard trannys can't really BTM or they will stall, so you see them getting all of the wheel spin and hop. With the auto tranny, we can BTM and where it's possible, control the truck much better on the obstacle.

[PARAGON]

that and we have heated seats