goonarmy

Beer tester

LZIR Despatch Agent

• Jan 28, 2008

• #1

Just got me Rangie and its got a viscous coupling instead of a difflock.Ive never used these before and i was expecting a difflock.Whats the difference and is there any performece/usage differences?I know what me 110 can do if the difflock through trial and error and a bit of advice would save some time.Cheers in adavnce.

 

lanmjdun

Active Member

• Jan 28, 2008

• #2

Think of the viscous coupling as a limited slip diff, it will allow only a small relative movement/rotational velocity between the front and rear propshafts.

This isn't usually a problem, when you get stuck its usually one front wheel slipping and one rear wheel slipping, but this would be the same in your 110.

If your Rangie has traction control you're in better shape as it will stop either rear wheels losing traction, and if its got 4-wheel traction control (approx 99 MY) then you're laughing!

 

RAZ8550TDI

New Member

• Jan 29, 2008

• #3

tyre choice of course!

 

R

redrange

New Member

• Jan 29, 2008

• #4

viscous coupling will send the power to where the grip is as opposed to sharing it like a limslip will! i would think it the better option

 

lanmjdun

Active Member

• Jan 30, 2008

• #5

Oh, how does it send the power where the grip is then?

 

R

redrange

New Member

• Jan 30, 2008

• #6

lanmjdun said:

Oh, how does it send the power where the grip is then?

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dunow! well i did but i forgot, google it and no doubt you will be enlightened!
if the fronts are spinning it will put the energy the engine produces into turning the rears and not just spining the fronts as well, very clever bit of kit.
i rememebr when i was a kid watching tomorrows world, they had a set of inclined ramps, one with greace on it and as a car slowly climbed the ramps 1 wheel hit the greace, the car slowed its climb as the wheel momenterily spun for half a turn then stoped and the car kept climbing!
think it was early 80's

 

Geekfreek

New Member

• Jan 30, 2008

• #7

redrange said:

dunow! well i did but i forgot, google it and no doubt you will be enlightened!
if the fronts are spinning it will put the energy the engine produces into turning the rears and not just spining the fronts as well, very clever bit of kit.
i rememebr when i was a kid watching tomorrows world, they had a set of inclined ramps, one with greace on it and as a car slowly climbed the ramps 1 wheel hit the greace, the car slowed its climb as the wheel momenterily spun for half a turn then stoped and the car kept climbing!
think it was early 80's

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This sounds like a Traction Control device, the VC was installed as a cost saving over a centre diff (which was lockable, the VC isn't) even if the VC did transmit equal power between front and rear (which it doesn't) the 'light' wheel will still spin due to the diff in the front or rear axle (unless you have a locker!).

The VC is there to stop the trans tying itself in knots, the front and rear wheels travel in unequal distances (due to the fronts turning right and left) and the VC will allow slipage between the front and rear axles, a centre diff and difflock are much, much better for off road use.

 

goonarmy

Beer tester

LZIR Despatch Agent

• Jan 30, 2008

• #8

a centre diff and difflock are much, much better for off road use.

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Will it make much difference really tho?

 

Geekfreek

New Member

• Jan 30, 2008

• #9

goonarmy said:

Will it make much difference really tho?

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Don't know really!. A centre diff and diff lock locks the front and rear propshafts together, no slipage, a VC allows movement between the front and rear props, thats the only differance.

 

goonarmy

Beer tester

LZIR Despatch Agent

• Jan 30, 2008

• #10

Im looking to offroad me rangie asap so I'll have to find out the hard way!