landrovers not permanent 4x4 drive

This site contains affiliate links for which LandyZone may be compensated if you make a purchase.
S

smudge67999

Active Member
Posts
330
hi everyone. well you learn something every day on this forum yesterday another site and abit of a debate about are landrovers selectable 2wd /4wd and guess wot they are. now i always thought they were all constant 4wd but how it works they are all awd in other words all wheel s roll but only the back prop is in operation not the front prop the front prop and wheels come into action when diff lock is selected then this makes it 4x4 drive this then can be taken out to give 2wd, and i know this is right as once i droped in a hole causeing my rear wheels on my manual rangy to lose total traction no both wheels in the air.so i selected diff lock which brought the front prop in and bingo i pulled out.was really happy to know this so the front hubs actually free wheel .now i bet theres afew on here who thought the same as me.
 
Nope, they are perminant 4x4 however without the difflock in the center diff allows loss of traction at any one wheel to spin off all power resulting in no drive to other wheels. When placed in diff lock it splits drive 50/50 front and rear so requires one wheel on each axle to lose traction to lose drive. If you where to then go further and fit front and rear diff lockers and a gage those aswell as center difflock you would then have true 4x4 and would be sending a constant 25% to each wheel meaning just one wheel with fraction and three spinning could drag you through.
 
yeah not correct, read about how centre diffs work. The reason all your rear wheels were spinning was because the diff sends the power the easiest route (physics) so the wheels with the least traction spin. Engage difflock and it forces the power everywhere.

If you had difflock engaged all the time you wouldnt be able to go round corners very well, the diffs allow difference in roadwheel speeds between each wheel so as not to break anything drivetrain wise

Series land rovers were 2wd/4wd but not since then
 
In theory rather than being 2x4 or 4x4 it should really be twin axle drive or single axle drive because the LR runs open diffs in the axles offroad when one wheel on the axle loses traction it can be classed as 1wd per axle so if you have a wheel in the air where you don't have any traction you're only sending power to the wheel in the air......

However on road when the vehicle is running then it is true 2wd as long as the vehicle is traveling in a straight line, once it starts to go round a corner or one wheels going slower than the other its again essentially 1wd as the diff lets one wheel go free in order to corner as one will move faster than the other i.e. inner wheel free's up, outer wheel keeps power on and it corners easily. This is only momentary.


If you had difflock engaged then as flat says your cornering would be poor as again one axle wants to travel faster than the other and this can't be done due to physics if the diff is locked. There becomes a struggle between the axles and this is when you fcuk up your CDL.


The reason your vehicle pulled out in diff lock was because you MADE the diff send power to the front instead of taking the easiest route
 
this info ifopund on a site called scooby.net and theres a landy debate on there take a loopk at this what this guys says.I shall repeat my origional statement................

Disco's, 90's and 110's all share the same transmition and are NOT.......i repeat NOT permenant 4x4...........

If you run any of these vehicles with the diff lock engaged on tarmac you WILL without fail destroy either the transfer box, front or rear diff, front or rear propshaft or any of the half shafts (driveshafts).......as its designed for use off road when grip is compromised the problem of torque wind up in the shafts is not a problem as any torsion in the shafts is spun away in the loss of grip.........on the road however this is not possible and put the drive shafts and other coponents under great strain and also give the vehicle some odd driving characteristics which will seem like a binding brake

The diff lock locks the central differential within the transfer box to divert drive to the front diff........without the diff lock engaged the front wheels and propshaft only free wheel.

P.s............i have 7 years experiance on these vehicles ranging from MY73 90's and 110's to MY00 Discos, 90's and 110's plus MOD spec Landrovers and landrover ambulances and also forward control Landrover 101's........Range rovers are different again with a different transfer box and a viscous coupling instead of a mechanical diff lock
 
standard = 1 wheel spin
center locked = 1 front & 1 rear spin
center & rear locked = 3 wheel spin
center, rear & front locked = 4 wheel spin

front and rear locks are aftermarket
 
smudge67999 said:
this info ifopund on a site called scooby.net and theres a landy debate on there take a loopk at this what this guys says.I shall repeat my origional statement................

Disco's, 90's and 110's all share the same transmition and are NOT.......i repeat NOT permenant 4x4...........

If you run any of these vehicles with the diff lock engaged on tarmac you WILL without fail destroy either the transfer box, front or rear diff, front or rear propshaft or any of the half shafts (driveshafts).......as its designed for use off road when grip is compromised the problem of torque wind up in the shafts is not a problem as any torsion in the shafts is spun away in the loss of grip.........on the road however this is not possible and put the drive shafts and other coponents under great strain and also give the vehicle some odd driving characteristics which will seem like a binding brake

The diff lock locks the central differential within the transfer box to divert drive to the front diff........without the diff lock engaged the front wheels and propshaft only free wheel.

P.s............i have 7 years experiance on these vehicles ranging from MY73 90's and 110's to MY00 Discos, 90's and 110's plus MOD spec Landrovers and landrover ambulances and also forward control Landrover 101's........Range rovers are different again with a different transfer box and a viscous coupling instead of a mechanical diff lock
Click to expand...

go back on and set them straight, or link them to us
 
smudge67999 said:
The diff lock locks the central differential within the transfer box to divert drive to the front diff........without the diff lock engaged the front wheels and propshaft only free wheel.
Click to expand...

Tell him to take his 7 years landy experiance and try this...

1) Go away and jack up his landrover so that both front wheels are off the ground.
2) With the center diff lock UNLOCKED start his engine, put it in first gear and lift the clutch.
3) Step out of the landrover and watch in wonder as the front wheels spin and the rear wheels stay stationary
4) Come back and apologize ;)
 
Last edited:
JordanTD5 said:
Tell him to take his 7 years landy experiance and try this...

1) Go away and jack up his landrover so that both front wheels are off the ground.
2) With the center diff lock UNLOCKED start his engine, put it in first gear and lift the clutch.
3) Step out of the landrover and watch in wonder as the front wheels spin and the rear wheels stay stationary
4) Come back and apologize ;)
Click to expand...

Lol
 
lewist1993 said:
nope, they are perminant 4x4 however without the difflock in the center diff allows loss of traction at any one wheel to spin off all power resulting in no drive to other wheels. When placed in diff lock it splits drive 50/50 front and rear so requires one wheel on each axle to lose traction to lose drive. If you where to then go further and fit front and rear diff lockers and a gage those aswell as center difflock you would then have true 4x4 and would be sending a constant 25% to each wheel meaning just one wheel with fraction and three spinning could drag you through.
Click to expand...

+1
 
smudge67999 said:
this info ifopund on a site called scooby.net and theres a landy debate on there take a loopk at this what this guys says.I shall repeat my origional statement................

Disco's, 90's and 110's all share the same transmition and are NOT.......i repeat NOT permenant 4x4...........

If you run any of these vehicles with the diff lock engaged on tarmac you WILL without fail destroy either the transfer box, front or rear diff, front or rear propshaft or any of the half shafts (driveshafts).......as its designed for use off road when grip is compromised the problem of torque wind up in the shafts is not a problem as any torsion in the shafts is spun away in the loss of grip.........on the road however this is not possible and put the drive shafts and other coponents under great strain and also give the vehicle some odd driving characteristics which will seem like a binding brake

The diff lock locks the central differential within the transfer box to divert drive to the front diff........without the diff lock engaged the front wheels and propshaft only free wheel.

P.s............i have 7 years experiance on these vehicles ranging from MY73 90's and 110's to MY00 Discos, 90's and 110's plus MOD spec Landrovers and landrover ambulances and also forward control Landrover 101's........Range rovers are different again with a different transfer box and a viscous coupling instead of a mechanical diff lock
Click to expand...

sounds like the a guy who knows absolutely nothing ,and is mixing series selectable 4wd with rrc ,disco and defenders
 
smudge67999 said:
this info ifopund on a site called scooby.net and theres a landy debate on there take a loopk at this what this guys says.I shall repeat my origional statement................

Disco's, 90's and 110's all share the same transmition and are NOT.......i repeat NOT permenant 4x4...........

If you run any of these vehicles with the diff lock engaged on tarmac you WILL without fail destroy either the transfer box, front or rear diff, front or rear propshaft or any of the half shafts (driveshafts).......as its designed for use off road when grip is compromised the problem of torque wind up in the shafts is not a problem as any torsion in the shafts is spun away in the loss of grip.........on the road however this is not possible and put the drive shafts and other coponents under great strain and also give the vehicle some odd driving characteristics which will seem like a binding brake

The diff lock locks the central differential within the transfer box to divert drive to the front diff........without the diff lock engaged the front wheels and propshaft only free wheel.

P.s............i have 7 years experiance on these vehicles ranging from MY73 90's and 110's to MY00 Discos, 90's and 110's plus MOD spec Landrovers and landrover ambulances and also forward control Landrover 101's........Range rovers are different again with a different transfer box and a viscous coupling instead of a mechanical diff lock
Click to expand...

Sorry Smudge, but you do need to develop a bullsh*t filter.....

This is complete bo**ocks (apart from the Series issue JM points out) - they are permanent 4x4, with all sorts of diff work going on and the ability to lock the centre one..... read in full above.....

Enjoy digging your way out of potholes with your 4wd, it works. A:)
 
yes i agree jordan td5 that message was what i paste and copied from the scooby.net site. yes i new how the 4 wheel drive system works but how it all came about theres a guy selling a disco on ebay and qouted he can select 2wd 4wd so i asked what mods had been done as landrovers i always belived are constant 4wd.he replied bk no he has been on the landrover site and found this info that they are selectable 2wd 4wd. plus he had other ebays questioning him over it.so this is wen i looked into it more finding the info i posted.which did get me thinking for a while
 
smudge67999 said:
yes i agree jordan td5 that message was what i paste and copied from the scooby.net site. yes i new how the 4 wheel drive system works but how it all came about theres a guy selling a disco on ebay and qouted he can select 2wd 4wd so i asked what mods had been done as landrovers i always belived are constant 4wd.he replied bk no he has been on the landrover site and found this info that they are selectable 2wd 4wd. plus he had other ebays questioning him over it.so this is wen i looked into it more finding the info i posted.which did get me thinking for a while
Click to expand...

you can get an after market kit which replaces center diff gears and makes dico or defender selectable 2wd or 4wd ,4wd by using diff lock ,so free wheeling hubs can be fitted as they were to series landies ,but the whole point of rrc disco and defender center diffs is to cater for them been permanent 4wd on the road or off ,many jap 4x4s have selectable 2wd or 4wd ,but i suspect the guy knows nothing
 
JordanTD5 said:
Tell him to take his 7 years landy experiance and try this...

1) Go away and jack up his landrover so that both front wheels are off the ground.
2) With the center diff lock UNLOCKED start his engine, put it in first gear and lift the clutch.
3) Step out of the landrover and watch in wonder as the front wheels spin and the rear wheels stay stationary
4) Come back and apologize ;)
Click to expand...

Lol, dont think anyone could have put it better.....please video this test and post:pop2:
 
You must log in or register to reply here.

Similar threads

P
Freelander 2 4wd problems
Replies
3
Views
1K
pauld2296
P
K
Help - 4WD issue !!
Replies
7
Views
694
Nodge68
Nodge68
D
Lost high range gear in transfer box??i
Replies
11
Views
906
steve2286w
steve2286w
xDParis64
Right...
Replies
9
Views
991
pwood999
pwood999
T
Defender front wheel not spinning.
Replies
2
Views
391
miktdish
miktdish
Back
Top