Another reason to fit CDL contol to D2.

[Zute]

Went for a short drive on Saturday to show the Disco to a friend. After playing with the Hill descent and traction control, I decided to show off the flex by driving diagonally up a small bank. Wow, talk about a discovery. (pun intended ) Park with the hand brake on, it would slid/roll back until all four wheels had grip. With only one wheel on a loose surface, this is enough to let drive? go out through that wheel.
My zook also has a transmission mounted hand brake but no centre diff. So 3 wheels with grip, it will hold.
Now I have found another reason to fit a CDL control.
Mind you, it was great to see the TC drive the Disco up the bank on only one front and one rear wheel with the opposite wheels practically off the ground.
I was glad to learn this about my Disco in a safe area and not some where on a steep climb or desent. It also moves front and rear diff locks up the list of must get.

[Redback]

Went for a short drive on Saturday to show the Disco to a friend. After playing with the Hill descent and traction control, I decided to show off the flex by driving diagonally up a small bank. Wow, talk about a discovery. (pun intended ) Park with the hand brake on, it would slid/roll back until all four wheels had grip. With only one wheel on a loose surface, this is enough to let drive? go out through that wheel.
My zook also has a transmission mounted hand brake but no centre diff. So 3 wheels with grip, it will hold.
Now I have found another reason to fit a CDL control.
Mind you, it was great to see the TC drive the Disco up the bank on only one front and one rear wheel with the opposite wheels practically off the ground.
I was glad to learn this about my Disco in a safe area and not some where on a steep climb or desent. It also moves front and rear diff locks up the list of must get.

Wait till you get the CDL, you'll be amazed how good the Disco will be and with it working in conjuction with the Traction control:o

Baz.

[barryj]

I want CDL too :(.

[mrapocalypse]

MR Autos. About 1500 with internals. Less with just actuator.

[barryj]

MR Autos. About 1500 with internals. Less with just actuator.


Is that MR's at Redcliffe?

I am waiting for my transfer case to decide if it's going to continue leaking or not.

They quoted $1,000 to fix the leak so that would be a good time to get the actuator fitted I suppose. At least the box has the internals, mongrel Rover for not putting the actuator on in the first place :mad:.

[sclarke]

CDL......................

Ask Duff about his on the Border Track Trip.....

He has a D2 with CDL and its chipped...

Wardy has a D2 Stock, no CDL....

Who got further up the Sand hills?????

[barryj]

CDL......................

Ask Duff about his on the Border Track Trip.....

He has a D2 with CDL and its chipped...

Wardy has a D2 Stock, no CDL....

Who got further up the Sand hills?????



I'm all ears .....

[sclarke]

Stock D2 with No CDL made it up alot easier....

We still dont know why...

Both Auto's also, both running AT's

[ak]

Stock D2 with No CDL made it up alot easier....

We still dont know why...

Both Auto's also, both running AT's

Well this just does not sound right, are you sure? Not trying to take the p!ss, but what you are saying does not make sense.

Could some of the more experienced off roaders chime in. I am always interested in what others have to say.

[weeds]

When I did the simpson I had a little play on the western side of big red, didn't want to go to hard as I was by myself and it was the start of my crossing

First attempt with open diffs nearly mad it

Second attempt with lockers engaged didn't get as far

I put it down to the fist run loosen the sand (as I was first there in the morning) along with four tyres trying to bury themselfs

I engaged the rear locker a few times while going up the dunes and didn't reckon I got much if any assistance

Yep I didn't have traction control so a little differant to your comparsion but was an interesting exercise

[Ken]

CDL or not How much weight was in both vehicles Ive been out on numerous occasions and have traveled further along the same terrain than Discos with CDL mines stock V8 no CDL 32" Muds
Even hill climbs have been easier than others that have CDL Go Figure ( Maybe its just the driver):o

[sclarke]

Well this just does not sound right, are you sure? Not trying to take the p!ss, but what you are saying does not make sense.

Could some of the more experienced off roaders chime in. I am always interested in what others have to say.

I was shocked also........

we put it down to one car having 265/75/16 and one having 235/85/16

Both drivers very capable....

We played on one sand hill for about 1.5hours trying Traction control and no TC then CDL then no CDL.... it was supprising the result.....

Result was my stock Defender was pathetic at making rooster tails in the sand, but the chipped D2 and the V8 rangie were the best at making roostertails...

[ak]

I was shocked also........

we put it down to one car having 265/75/16 and one having 235/85/16

Both drivers very capable....

We played on one sand hill for about 1.5hours trying Traction control and no TC then CDL then no CDL.... it was supprising the result.....

Result was my stock Defender was pathetic at making rooster tails in the sand, but the chipped D2 and the V8 rangie were the best at making roostertails...

So which tyres were on which car?

[Blknight.aus]

dont forget that the one with the better shocks wont do so well at a low speed climb.....

Ive sneaked a perentine up a dune by dropping the rear shocks off and tying them out of harms way. we were getting close with the rubber at sand pressure but just not quite getting there.

[100I]

dont forget that the one with the better shocks wont do so well at a low speed climb.....

Ive sneaked a perentine up a dune by dropping the rear shocks off and tying them out of harms way. we were getting close with the rubber at sand pressure but just not quite getting there.

Huh??? By "better" do you mean "stiffer"?.....

[sclarke]

Wardys were Shagged out... as were mine

[Blknight.aus]

as in still working as opposed to tubular decorations that hang between the axle housing and the chassis.

[wardy1]

Hmmm..... now the shagged shockers are a PLUS????:eek:

What Clarkie said about the 2 D2's is all true, Duff's car had more grunt than mine, was running slightly smaller diameter tyres and one more thing, he was running about 16 psi and i was running 18 psi front and 20 psi rear.

My car was loaded to the hilt with a roof rack as well (there were 2 in my car, the others just had themselves to play with).

Before this trip I was **** scared of being constantly stuck in sand....... now I know different :).

[Zute]

The heavier car may have got the tyres to bag better.
When I did Big Red in my Rocky, I had to drop to 10psi just to get the tyres to bag. It was to light for the tyres.
Another thing that was making it harder for me. Every time I stopped to drop air, someone else would have a go and put down a wider track width in the sand.:mad:
Gearing, rolling diameter, tyre profile and weight all make up variables. I would think diff locks are only needed if the ground is uneven. ie, the sand on say Big Red would offer the same grip to all wheels. In the same way a CDL would only help if one axle became unloaded by a significant amount.
The real question is, was the TC activating ? If not than all wheels may have been spinning at the same speed.

[Zute]

CDL or not How much weight was in both vehicles Ive been out on numerous occasions and have traveled further along the same terrain than Discos with CDL mines stock V8 no CDL 32" Muds
Even hill climbs have been easier than others that have CDL Go Figure ( Maybe its just the driver):o

The ones with Locked CDL, was the TC still active ?
It's all about grip, and how you use it.;)

[wardy1]

My TC was certainly working and Duff tried it with his on and off (fuse removed).

[ak]

My TC was certainly working and Duff tried it with his on and off (fuse removed).


So you had the taller tyres and no CDL, have I got it right.

Do you put it down to the taller tyres giving you the advantage.

[DaveF]

Howdy,

Just for my 3cents worth, I was on the Border track 3 weekends ago. My 01 D2 TD5 manual with 245/70/R16 Pirelli Scorpion At's at 16 front and 20 rear, tackled all the dunes with gusto with CDL engaged and TC & ABS disengaged. I was starting in 4th Low then 3rd Low halfway up. I have found engaged CDL and disengaged TC & ABS works best in sand. It was just my son and I in the car with fridge and a small amount of camping gear so not a huge amount of weight. I had to have a second go at a couple of dunes as they were soft and carved up. Bucketloads of fun though. :BigThumb:

Cheers

DaveF

[wardy1]

It's the only thing we could come with.... We also tried different approach speeds etc.... BTW... BOTH are also AUTO's.

I found that going up in High with the shift in 3rd did the best job. But low 3rd with the 'manual' switched on was good also.

I think there has been an enormous amount of bad press about TC. Fact is, if you back off, you lose. Give it more and it will climb......and climb...and CLIMB

[Blknight.aus]

unless your pullin a ton of green tandem axle with a wider wheel track than the rover...

then you will sink and sink and sink.....

[Studio54]

My dad and a friend did the Canning Stock Route back when it was still an achievment but after the camels had left, about 1988 from memory.

Anyway they did it in turbo diesel 60 series with no expense spared....thats right including diff locks.

Over 600 sand dunes fully loaded is a pretty good testing ground but it didn't take long before the descovered they were more succesfull without the lockers engaged.

As some one touched on earlier, the tyres were just digging themselves holes. Once they worked this out, they left them off and didn't use them again all trip.

Granted a CDL works a little different and many different circumstances llike tyres and suspension will change the effect but I would bet this is the same issue.

To much traction stealing precious momentum.

JB

[Ken]

The ones with Locked CDL, was the TC still active ?
It's all about grip, and how you use it.;)

Grip doesnt mean much when you lose momentum
Ive been out with others with front and rear diff locks and they get no further
if you need to climb an obstacle you wont be going quickly anyway
When your in a group situation the first couple of cars make it up fairly easy after that depending on terrain it becomes harder until eventually out come straps and winch cables ;)