Diesel Do
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It could tell you you have different sized tyres! But not if the ird is under stress?!?!
Freelander 1 HCU - Hippo Coupling Unit (TM)
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It could tell you you have different sized tyres! But not if the ird is under stress?!?!
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Ird stress is a symptom, not a cause. If you can monitor the cause and eliminate the problem, then you won't see the effects 
Diesel Do
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Ird stress is a symptom, not a cause. If you can monitor the cause and eliminate the problem, then you won't see the effects
But it'll only show differences in wheel speed!
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No
I think yu missed my point, which was to monitor VCU I/O differences. Having thought about it a bit more tho, the answer, Shirley, has to be to change the VCU to a mechanical lock/unlock system. That takes all the guesswork out.
I think yu missed my point, which was to monitor VCU I/O differences. Having thought about it a bit more tho, the answer, Shirley, has to be to change the VCU to a mechanical lock/unlock system. That takes all the guesswork out.
Diesel Do
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Or a 50 50 split so it doesn't work so hard! Or summat like the dccd system!
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I am impressed with the XT off/auto/on system, but it is so reliant on electronics . By only having an on/off option, it makes the controls so much simpler.
. By only having an on/off option, it makes the controls so much simpler.
Diesel Do
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I reckon the ird needs a proper diff and torsen centre! For front to rear! Mechanical and bomb proof!
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Nothing's bomb proof. Defender Tboxes aren't bomb proof - just more so . Just very clumpy and heavy.
Think yo idea (sh!) will be an interesting solution.
. Just very clumpy and heavy.Think yo idea (sh!) will be an interesting solution
.
Diesel Do
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Nothing's bomb proof. Defender Tboxes aren't bomb proof - just more so
Think yo idea (sh!) will be an interesting solution
Me too. Just need some money and time! Did a bit of research on the low range system. It's not a true low range just a slight gearing help thats why the bigger engines didn't get it cos they had enough power to not need it and it sounds like they'd eat it!
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Sorry to bump, but this thread is far too interesting to let die.
Just a thought I had (so probably bad) but what if the two halves of the HCU contained overlapping coils, so that rotation at different speeds turns them into their own electromagnet? The fluid contained at the centre of the unit would be surrounded by the EMF, so should be in the ideal position for the effect to occur.
Would obviously need loads of PITO testing but you could vary the number of coils until you got to the ideal solution.
Just a thought I had (so probably bad) but what if the two halves of the HCU contained overlapping coils, so that rotation at different speeds turns them into their own electromagnet? The fluid contained at the centre of the unit would be surrounded by the EMF, so should be in the ideal position for the effect to occur.
Would obviously need loads of PITO testing but you could vary the number of coils until you got to the ideal solution.
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biggest problem would be getting power to a rotating unit.
they sound like instructions for building a warp coil, lol
i'm sure this could be done in a simpler fashion, remember what happens when things are over designed/ complicated.
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You wouldn't need it, that's my point.
Contra-rotating coils produce their own EMF.
You can increase the effect using a multi-pole armature, a bit like an alternator.
So, the EMF would only be generated if there is slip, in fact the more slip occurs, the bigger the EMF.
Spacemonkey...
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That's unbelievable....
:drum:
:drum:
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but yu would need to vary /control the slip.
rise and fall in the magnitude of the emf would result in a torsional wax and wain effect.
why not try a double cardan with a clutch assembly.
now that's summat tha could hit wiv an hammer if it played up
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It would be automatic.
If there is no slip, the coils travel at the same speed, so no EMF and no locking.
With a small amount of slip, the coils rotate separately at a low speed, so a small amount of EMF, etc.
So the higher the slip, the higher the EMF, and the stronger the resistance in the fluid.
So, pretty much the same behaviour as a VCU but with EMF instead of heat.
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through the viscous fluid and the greater surface area of the vcu unit.
EDIT: the vcu does not work under friction directly, it is transferred through the fluid.
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