not your usual vcu topic

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thought the ratio difference was so the front wheels would constantly pull the back end ..
helping in-line road stability .. at least that's how i remember blurb when the hippo first
hit the roads ..
before that .. i think it were a concept that one other manufacturer had tried .. but failed ..
 
No ones mentioned the fact that there isn't a centre differential at all hence the need for summat to allow speed differential between front and rear for cornering! It's such a basic requirement in a permanent 4x4 system that gear differences aren't really relevant!
Basically no diff or vcu = transmission wind up and broken things! :D
 
the fact that there isn't a centre differential at all hence the need for summat to allow speed differential between front and rear for cornering!
Click to expand...

exellent point reminder :)

was a engineering shop on my street years ago ( since closed )
main job was repairing industrial gears
guy who owned it .. once tried to explain to me how vehicle differentials work
i understood at the time .. but these days am still at a loss to refigure it out ..
engines are no mystery .. but for some reason gearboxs 'n differentials i find confuzling
 
hd3 said:
exellent point reminder :)

was a engineering shop on my street years ago ( since closed )
main job was repairing industrial gears
guy who owned it .. once tried to explain to me how vehicle differentials work
i understood at the time .. but these days am still at a loss to refigure it out ..
engines are no mystery .. but for some reason gearboxs 'n differentials i find confuzling
Click to expand...
this will help
How does the differential work? Aroundth1937 - YouTube
 
this will help
How does the differential work? Aroundth1937 - YouTube
Click to expand...

great stuff :)

.. luv those old black 'n whites ..
and now understand the diff. concept ..

mucho thanx for the link ..
 
Ahhh those were the days :D. Though I didn't realise it at the time, when I built one of these nut and bolt aged 12 I learned pretty much everything one need to know about how an automobile works:

ram320.jpg


Unusually, this nitro car had a reverse gear which was achieved using a really clever gearbox design. A real pioneer of RC car tech :).

qrctrans320.JPG
 
Last edited:
WLJayne said:
Ahhh those were the days :D.
Click to expand...
i only asked about ird as at the time it was been built (freelander )lr bods told us it would have a slight difference in bias front back to give the car front wheel drive feel as that was the market the buyers would be used to , we did have a big discussion about wind up at the time seemed reasonable to me considering lr usually made equal 4wd though i should imagine cost played apart too,though personally i think a center diff and v/c like rr would have been better ,but fl has sold well and does work, and understanding v/c can save ird and diff issues along with servicing
 
Last edited:
jamesmartin said:
i only asked about ird as at the time it was been built (freelander )lr bods told us it would have a slight difference in bias front back to give the car front wheel drive feel as that was the market the buyers would be used to , seemed reasonable to me considering lr usually made equal 4wd,though personally i think a center diff and v/c like rr would have been better ,but fl has sold well and does work, and understanding v/c can save ird and diff issues along with servicing
Click to expand...

I'm not sure if anyone here trulky knows the intentions of the design and why they did what they did :). It doesn't help that it's a clueless owner vulnerable system which is further not helped by LR assuming VCU's would last forever. But when it's working it works well, and that's what matters :).
 
WLJayne said:
I'm not sure if anyone here trulky knows the intentions of the design and why they did what they did :). It doesn't help that it's a clueless owner vulnerable system which is further not helped by LR assuming VCU's would last forever. But when it's working it works well, and that's what matters :).
Click to expand...
they new about v/cs not lasting forever as it was the rr borgwarner we reconditioned for them that they came to see about ,nearly every return had a failed v/c persumably the higher mileage vehicles ,
 
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