Wednesday 19 December 2007

VOLVO XC70 4C Dynamic Chassis

I can't really find a lot of information about this.

Clearly the dealer - who know in general little about their cars become woeful when you start asking techy questions such as this. Even the word Chassis.. what does this mean.. ??

I am confused about the term Dynamic Chassis.. surely it means dynamic suspension system.

Anyway, so far I have not really played with the system in an organised way. If you are driving, the position of the button is a bit hidden so you need to take your eyes off the road, so better to anticipate needing to change a setting when stopped.

The other thing is that when you change the setting, you don't really notice anything.. so it gives a so what feeling.. why did they bother with this?

Anyway yesterday I was able to demonstrate the difference.

I was driving about 60mph on a motorway.. and the motorway was made in sections.. probably concrete underneath..so it was far from smooth. Switching between comfort, sport and advanced demonstrated the suspension (not chassis) differences very clearly.

I have a Honda S2000 which has a fully adjustable damper suspension, and the changes between sport and advanced etc.. felt the same as when I have been playing with the "bump" and "rebound" settings on the dampers.

The frequency of oscillations changed..to the point where advanced was quite uncomfortable on that section of motorway - but you can feel the response of the suspension being so much sharper..

So I suspect all they are doing, is a small electrical adjustment on the damper valves. Seems a lot of money to do this, since you can buy an aftermarket system such as TEIN damper set which has this feature... with complete set of dampers etc for less than the option cost.. so when volvo does this on a mass scale at the factory.. you know the cost is much lower to them.

However still not clear why it has been put on the XC70..? wouldn't something that adjusts ride height be more appropriate?

On subject of ride height, I recently read the XC70 has better ground clearance than a Cherokee jeep, can you believe that?

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