Originally Posted by Phil C
Obviously unless you move the upper shock position so that the angle of the shock stays the same you will also feel the effect this has....
More angle on the shock makes the suspension 'regressive', meaning it gets softer the further it travels
Less angle on the shock makes it more linear, so compared to a more angled shock, it will feel stiffer as the car rolls.
Hope this helps.
(1) I have a query regarding your comments about shock angle (as opposed to shock position on bottom arm).
My query is based on the theory at the site below (which I have found generally quite useful).
"R/C Car Handling - An Introduction To Vehicle Dynamics."
In particular, the chapter on "Suspension", section 2.8 Shock mounting locations.
It seemed (?) to all make sense (has pics and text).
Anyway, the formulae of interest is:
---- Wheel rate = spring rate * (D1/D2)² * sin (a)
a = shock angle in degrees
a = 90 degs would be an upright shock (ie: sin a = 1)
a = 0 degs would be a shock layed horizontal - not useful (ie: sin a = 0)
a = 45 degs (say) would be a shock layed down half way between the two extremes (ie: sin 45 = 0.707).
As the suspension is compressed:
-- the angle (a) gets LARGER (* this is the key observation *)
-- sin (a) gets LARGER
-- WheelRate gets LARGER
-- effective spring rate gets LARGER (harder)
-- more angle on the shock, starts out SOFTER
-- but gets HARDER as the suspension is compressed
(3) On the surface this seems to be at odds with your comments.
What am I missing here ?
Sorry about the equations (my head hurts)