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Surfie71 Profile
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Date Registered: 02-2009
TOTAL POSTS: 132
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Is the X-Trail a real 4WD


Hi guys,

I have been told that the 4WD system on the X-Trail is not a "real" one.
What I mean when you put it in lock position it's all done by the computer who control the torque etc. There is no dif lock. This is as appose to lets say Toyota Hilux where you need to physically lock the hubs.

Can someone shed some light?

Thanks


---
Ty & Blythe + Ma'ayan (6yrs) & Ori (3yrs )
2006 NISSAN X-TRAIL T30 II MY06 ST-S 40th Anniversary (X1170)
Nudge Bar, Roof Racks, Floor Mats, Dash Cover, Exhaust Extension.
2/Jul/2009, 2:16 pm Link to this post Send Email PM   Send Private Message
 
freewill11 Profile
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Date Registered: 02-2008
Location: North Maclean Qld
TOTAL POSTS: 4145
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Re: Is the X-Trail a real 4WD


I am aware that the X-trail is not a true 4x4 but is classed as a softroader.

I know that there is no diff lock like the bigger 4x4 but what the exy has got is enough for what it is designed to do..

Hope Jalal and others can shed some more light on this for you and correct me if I am misleading you.

Regards Scot

---

T31 2008 CVT TI Series 1 Electric Blue
X-764(c)
2/Jul/2009, 2:25 pm Link to this post Send Email PM   Send Private Message
 
Helldude Profile
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Date Registered: 02-2008
TOTAL POSTS: 92
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Re: Is the X-Trail a real 4WD


The term Real 4x4 usually relates to a vehcile having Low range and a drive system that doesn't go in and out of 4wd with an increase in speed . Ground clearance , Suspension , tyres , chassis have a part to play as well, depending on what type of driving you are doing .

a locking diff is not the same as locking the front hubs !
On a "real 4x4 " if you lock the front hubs you are still only driving the wheel with less grip !
(open diff)

A locking diff will "lock" both front or rear wheels together usually with the aid of an air compressor activator ! ( not a normal standard fittment )

Jeep rubicon is one I know that has a standard diff lock .

Someone correct me if I'm wrong ! (I think I'm close enough to being on the right track though)

---
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2/Jul/2009, 6:50 pm Link to this post Send Email PM   Send Private Message
 
cooch t31 Profile
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Date Registered: 06-2008
Location: Blue Mountains, NSW
TOTAL POSTS: 5966
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Re: Is the X-Trail a real 4WD


Both models in lock mode is the equivelant of 4wd in high range on any other standard 4x4.
Some expensive 4x4's come standard with diff locks which lock the 2 axles so there is no single wheel spin on that axle.
You can buy them aftermarket for around the $2000.

Yes the computer does control the lock mode but is the same as any new 4x4 on the market without live axles (diff).

Hope this was helpfull.

---
Tony X-891c

HERE is my D22 Navara
HERE is my old 2008 T31, ST Series1

2/Jul/2009, 6:50 pm Link to this post Send Private Message
 
jalalski Profile
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Date Registered: 02-2004
Location: SUTHERLAND, SYDNEY
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Re: Is the X-Trail a real 4WD


quote:

Surfie71 wrote:

Hi guys,

I have been told that the 4WD system on the X-Trail is not a "real" one.



It depends on how you define a "real 4WD system" I guess emoticon

The xtrail has a 4WD system on demand, but it doesn't have low range to make it a true off-roader ad that is why it classed as a SUV.

You may find ]THIS thread interesting as it does explain the difference between 4WDs with and without low range.



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Date Registered: 02-2004
Location: Panania, Sydney
TOTAL POSTS: 2852
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Re: Is the X-Trail a real 4WD


And the Subaru's (Forester, WRX, probably all of their range, actually) are "all-wheel-drive" - you don't have any option to select 2WD or 4WD; all wheels drive the same - probably like a "normal" 4WD but again, loss of traction with 1 or 2 opposite wheels is likely to render the vehicle useless, as with most other 4-wheel drives, due to no "diff lock" as previously mentioned...


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Rich. X-013(c)
'04 S2 ST Auto. Nudge_roofracks_tow_tints_Lightforce_GME_YokoGeoA/T-S_TBS_bashplate_50mm-spacer-lift
Click here to see >300MB of photos and videos All For His Glory.
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Date Registered: 06-2009
Location: NW Taswegia
TOTAL POSTS: 129
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Re: Is the X-Trail a real 4WD


quote:

Helldude wrote:
On a "real 4x4 " if you lock the front hubs you are still only driving the wheel with less grip !
(open diff)

A locking diff will "lock" both front or rear wheels together usually with the aid of an air compressor activator ! ( not a normal standard fittment )



The free wheeling front hubs mean that the front axle half shafts and diff centre etc are not being turned on road for reason of fuel economy....... and drivetrain wear etc.

The XTrail from what I read has a front wheel drive bias, so when in 2wd mode is in FWD.... and when in the Auto mode (4wd) is driving the front wheels unless slip is detected when some drive is sent ot the rear. The Lock mode in the XTrail only works at slow speed to send drive to the rear wheels to come close to the high range 4wd setting "H4" in a traditional 4WD (ie one which is 2wd, rear wheel drive, when in that mode say on a sealed road - "H2").

The Xtrail has no low range 4wd "L4" which is where a further lower gear is operated to allow for even slower travel and further torque multiplication (ie Nissan GU Patrol - [sign in to see URL] gearing for low range, compared to high range at 1:1..... and then I have modded mine to run a 3.7:1 gearset..... think first gear on the rev limiter at under 20kph)......

So..... it is more capable than a 2WD, but just how capable depends on how you want to use your XTrail.

And then Diff locks.... depends on whether you are talking about a cross axle diff lock (eg front diff lock or rear diff lock) which limit spin on one wheel to send drive to the other which likely has better traction. These can be aftermarket (ARB Air locker, TJM locker, Lockrite, Detroit Locker or Electric / vacuum factory lockers (Toyota, Nissan, Mitsubishi).... huge range out there.... (refer to Patrol, Cruiser, Troopy, Triton, Pajero for some factory examples).......

or Centre diff locks on the full time 4wd 4wd wagons, like the higher spec 80 series for example, which really just aim to achieve sending 50% of drive to the front diff and 50% to the rear, same as the older transfer cases did mechanically when put into a 4wd mode.....

Also - some Subarus have a low range - but it is usually only about 1.3:1, so not in the same league as the big 4wd wagons either......



---
Ian X-1289(c)
2009 Platinum TL Xtrail - Scanguage2, Mio Moov360 GPS, Fridge, 100AH AGM 2nd battery, cargo barrier.
1998 GU Patrol 4.5 Petrol, lifted locked, barred...... so much there.
7/Jul/2009, 12:30 am Link to this post Send Email PM   Send Private Message
 
Surfie71 Profile
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Date Registered: 02-2009
TOTAL POSTS: 132
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Re: Is the X-Trail a real 4WD


Thanks guys for all your replies.

Mechanic is not my strong side, but I just wanted to know how the 4WD works.
I use to own a Daihatsu Feroza 4WD years ago. I use to turn those knobs on the wheels to get into 4WD mode.

My question is, what happens mechanically when you do so on such vehicle (Daihatsu and the likes) and what really happen on the X-Trail when you shift into Lock mode?

Are there any differences.

Thanks


---
Ty & Blythe + Ma'ayan (6yrs) & Ori (3yrs )
2006 NISSAN X-TRAIL T30 II MY06 ST-S 40th Anniversary (X1170)
Nudge Bar, Roof Racks, Floor Mats, Dash Cover, Exhaust Extension.
8/Jul/2009, 1:38 pm Link to this post Send Email PM   Send Private Message
 
jalalski Profile
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Date Registered: 02-2004
Location: SUTHERLAND, SYDNEY
TOTAL POSTS: 28941
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Re: Is the X-Trail a real 4WD


On the Feroza you would have manually locked the front hubs to go into 4WD mode, on the xtrail all of that is done electronically by selecting the LOCK button on the dash for the rear wheels to engage (when needed), so manual intervention is required.

In the past 6 years of driving an xtrail in off-road and road conditions, I only needed to use the LOCK mode 2-3 times doing a muddy crossing, all other times the AUTO mode (which detects slippage) was quite adequate.

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Surfie71 Profile
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Date Registered: 02-2009
TOTAL POSTS: 132
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Re: Is the X-Trail a real 4WD


Thanks Jalal.

When your saying 'elecronicly' do you mean from the dash I understand.
Is that electronic command actully triggers a mechanical response to "really" engage the rear wheels.

I hope I'm making sense here?!

Ty

---
Ty & Blythe + Ma'ayan (6yrs) & Ori (3yrs )
2006 NISSAN X-TRAIL T30 II MY06 ST-S 40th Anniversary (X1170)
Nudge Bar, Roof Racks, Floor Mats, Dash Cover, Exhaust Extension.
8/Jul/2009, 2:19 pm Link to this post Send Email PM   Send Private Message
 


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