front roll centre ?

[renegadealfa]

Hello,

i am looking to understand the  suspension  on my 69" 1750, can anyone outline what the "front roll centre" actually is ?

Thanks

[RobDee]

Take a look at this existing thread about front roll centre: http://www.alfaclubvic.org.au/forum/index.php?topic=10401.0

The roll centre of a suspension is the imaginary point about which the body rotates when experiencing body roll.  The front and rear suspensions usually have different roll centre heights, so the body actually rolls about an inclined axis along the longitudinal centreline of the vehicle.  The higher the roll axis, the less body roll you get (all else being the same) because of the reduced distance between the centre-of-gravity and the roll axis.

The front roll centre is determined by the pics in the above link.  The rear roll centre will be at the top of the diff where the T-bar attaches.

Rob

[aggie57]

http://www.amazon.com/Tune-Win-science-development-tuning/dp/0879380713/ref=pd_sim_b_1

[renegadealfa]

Thank you for the details.

[Beatle]

I found this book quite a good introduction to suspension geometry speak.  While it is aimed at clubman type cars, the explanations and drawings are very simple and easily understood, and the theory readily translates to other cars and suspension design.