GrumpyGel
Well-Known Member
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.
thefrog
Active Member
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
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
Nodge68
Well-Known Member
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
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
GrumpyGel
Well-Known Member
So what's between a clutch plate and the flywheel?
Turboman
Mab An Gov
Oil that's leaked out of a failed crankshaft seal?
