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Aeroplane or airplane?


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Old KoreelahMore intriguing, I'm not sure where 4x4 originated but is it the more specific description, for example

 

4x2 - 4 wheel groups, 2 driving

 

4x4 - 4 wheel groups, 4 driving

 

6x2 - 6 wheel groups, 3 driving (then a confusion, either a lazy axle, pusher axle or twin steer)

 

6x4 - 6 wheel groups, four driving

 

6x6 - 6 wheel groups, all driving

6x2 is a truck with lazy axle ie 6 "wheels" of which two wheels are driven (not 3) A "wheel" may consist of a single or double tyre on a rim6 x 4 is a powered double rear axle (ie one driveshaft to two differentials and 4 wheels).

 

Other past time is 4WDing...

 

 

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Guest Howard Hughes
Now I'm going with 'aircraft' and 'airfield'. Now will you 'airheads' go find something else to do??

Would have thought you were a 'drome' man Pud!012_thumb_up.gif.cb3bc51429685855e5e23c55d661406e.gif

 

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6x2 is a truck with lazy axle ie 6 "wheels" of which two wheels are driven (not 3) A "wheel" may consist of a single or double tyre on a rim6 x 4 is a powered double rear axle (ie one driveshaft to two differentials and 4 wheels).

 

Other past time is 4WDing...

Sorry, 3 was a typo.

 

The 6x2 dosen't have to be a lazy axle - it can be a twin steer single drive.....which is why this nomenclature isn't perfect

 

 

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Unless hubs are locked at any one time only 1 wheel or set is actually putting power onto the road of the 2 wheels or sets connected through the same differential. So even in 4WD it is a 4x2.

 

 

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Unless hubs are locked at any one time only 1 wheel or set is actually putting power onto the road of the 2 wheels or sets connected through the same differential. So even in 4WD it is a 4x2.

4WD systems 101

One driveshaft goes to a differential which splits the torque between the two wheels via half shafts. On a dead straight road with 100% grip road the torque is spread equally between the two wheels. This is the same no matter which end the diff/axle is located.

 

When the wheel on one side of the axle is in a high slip area (mud, etc) then all of the driveshaft rotational energy is expended turning that "free spinning" wheel with little to no torque getting through to the side with grip ("path of least resistance"). Locking differentials are used to remove the speed difference between sides of the axle in these cases, with the limitation that it makes turning more dificult on high grip surfaces due to the need for the wheels to turn at different speeds (inside vs outside wheel) when turning a corner.

 

This speed difference is also applicable between the front and rear axles in any 4WD and known as "binding up" when turning a corner, resulting in possible destruction of the transfer case. Some vehicles use a center differential to equalise the speed differences between the driveshafts (Toyota Prado, mid-high end LandCruisers, RangeRovers, RR Discovery's), whereas some use a wet clutch pack to allow some slip (most AWD SUV's), and still others hope and pray thay you have common sense and have no center differential (low end LandCrisers, Hilux, Patrols etc).

 

Back on topic..............augie.gif.8d680d8e3ee1cb0d5cda5fa6ccce3b35.gif

 

 

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I thought an Aeroplane was just a choc bar full of bubbles of nothing?I think you can also get an Aeromint as well!

 

to many things to think about...

 

Rolling 21

 

 

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With their Up, Tiddly, Up, Up

 

And Their Down, Tiddly, Down, Down.

 

Up! Down! Flying Around.

 

Looping The Loop And Defying The Ground.

 

They're All, Frightfully Keen

 

Those Magnificent Men, Those magnificent men, Those magnificent men and their flying machines!

 

 

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Obviously, they wouldn't have wanted xxxxxx.air as they would have been accused of being airheads. But really does AIR conjure up thoughts of flying or flying machines? To my mind AERO does.

 

 

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