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 What's it like living with a 4x4? 
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Firing on 1-2 Spark
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Joined: November 8th, 2009, 5:42 pm
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Location: NL
Post Re: What's it like living with a 4x4?
and also, because the propshaft rpm is higher+ the 2cv has less power overall the visco coppling needs to have less friction otherwise it is like a 100% lock in a 2cv.. So I guess it needs thinner oil to operate properly in a 2cv 4x4.......

Just a thought....

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Russell wrote:
Hi Geo,
you've been one of the sites biggest attractions in recent years.
Russ


December 16th, 2015, 7:01 pm
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Firing on two.
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Joined: August 8th, 2012, 11:00 am
Posts: 283
Location: Jyskä, Finland
Post Re: What's it like living with a 4x4?
lpgo wrote:
jasu wrote:
Yes, viscous coupler from VW Syncro...

And yes, I know they became heavier than 4x2. Trying to have as light as can, for now, but later I'm going to use zinc plated Ami Super chassis. But that will happen after techical inspection, my goal is to keep all four seats on, and if the weight raises too much they will reduce seats...


Please tell me that you still can disengage 4x4, otherwise you need a very very very well balanced propshaft...

The propshaft in a 2cv is doing about 3 times the rpm of a normal (VW) propshaft; so it really needs to be well balanced otherwise your drive-line will brake in parts when driving at high speed..

The propshaft is perfectly balanced, first part (made from syncro center part) on the machining shop and second part by VW. And the adapter to connect the visco to input shaft should be straight, made at lathe...

lpgo wrote:
and also, because the propshaft rpm is higher+ the 2cv has less power overall the visco coppling needs to have less friction otherwise it is like a 100% lock in a 2cv.. So I guess it needs thinner oil to operate properly in a 2cv 4x4.......

Just a thought....

Have been thinking that a lot and I will see how it is working when this is "ready", but if the oil is needed to change thinner, it should be very easy task to do. Filling plugs shows well and they aren't some weird plugs, just normal hex plugs...

I have planned to use that only at winters, when there is snow on the ground, so the future driving will be mostly at snow and not high speeds. But who knows..?


December 16th, 2015, 7:17 pm
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Firing on 1-2 Spark
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Joined: November 8th, 2009, 5:42 pm
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Location: NL
Post Re: What's it like living with a 4x4?
Please Please make your own topic of this project and show us your progress, (and what you have done sofar).... This is what this forum is all about in my eyes... sharing interesting stuff......

cheers Geo..

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Russell wrote:
Hi Geo,
you've been one of the sites biggest attractions in recent years.
Russ


December 16th, 2015, 7:34 pm
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Firing on two.
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Joined: August 8th, 2012, 11:00 am
Posts: 283
Location: Jyskä, Finland
Post Re: What's it like living with a 4x4?
Yes, I will. In some day. This has been a very long term project, nearly forgotten, but still going on...


December 16th, 2015, 9:35 pm
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Firing on two.

Joined: January 16th, 2010, 5:15 pm
Posts: 212
Post Re: What's it like living with a 4x4?
Geo said it all
propshaft speed will be too high
you must dis connect it for fast road use, and less energy consumption
in these odd 20 years of production i reckon that
after 50 Km h 4x4 is not really necessary
typically 4x4 gets you out of trouble or gets you there!

also weight???? think very much about that evil!

keep up the good work
pony

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December 17th, 2015, 10:01 pm
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