Is this correct ?
- Thread starter thefrog
- Start date
This site contains affiliate links for which LandyZone may be compensated if you make a purchase.
GrumpyGel
Well-Known Member
- Posts
- 26,398
- Location
- Christchurch, New Zealand
I said before that discussions about different 4WD terms never end.
Well discussions on how the VCU works never end either, but include twice and many posts and four times as many arguments.
Ok ok
But when the guy in the video says "when it heats up (the VCU) it starts to grip".
This is rubbish, it grips all the time and 'slips', that's how it doesn't break the transfer box.
It grips more when its cold and should grip less when it heats up as the silicone would be more fluid, no ?
But when the guy in the video says "when it heats up (the VCU) it starts to grip".
This is rubbish, it grips all the time and 'slips', that's how it doesn't break the transfer box.
It grips more when its cold and should grip less when it heats up as the silicone would be more fluid, no ?
GrumpyGel
Well-Known Member
- Posts
- 26,398
- Location
- Christchurch, New Zealand
Now you are playing with terms.No, its not a physical mechanical connection, Does it actually have parts bolted/locked with a lever, together?
Ok so its a variable fluid connection.
J
And simple mechanics
Yes everything is bolted together. Or at least, they should have been when leaving the factory (no guarantees there, its a Land Rover).
No there are no levers - it uses the components' physical properties to drive the rear axle with a degree of slip when all wheels have traction and no slip when one, or more, does not.
Next come back please
GrumpyGel
Well-Known Member
- Posts
- 26,398
- Location
- Christchurch, New Zealand
Everything you need to know about the VCU is in Wikipedia.
Viscous coupling unit - Wikipedia
The VCU will keep the front and rear wheels locked together, but how hard they are locked together depends on the rotational speed difference between the front and rear axles.
Turboman
Mab An Gov
- Posts
- 60,151
- Location
- Lathrowda, Kernow
The LZ equivalent of debating how many angels can dance on the head of a pin.
Well then.
Oil is not a bolt is it?
If things slip there is not a positive mechanical connection?
J
- Posts
- 33,609
- Location
- North Shropshire
He says many are 2wd because viscous unit fails and people take the prop shaft off, not that some are sold as 2wd
GrumpyGel
Well-Known Member
- Posts
- 26,398
- Location
- Christchurch, New Zealand
So what's between a clutch plate and the flywheel?
Turboman
Mab An Gov
- Posts
- 60,151
- Location
- Lathrowda, Kernow
Oil that's leaked out of a failed crankshaft seal?
Similar threads
Freelander 2 (LR2)
Exterior Lighting Problem
