Slo Poke wrote: ↑28 Jun 2019, 12:40
SF Engineer wrote: ↑28 Jun 2019, 08:44
Slo Poke wrote: ↑28 Jun 2019, 00:50
Wheel camber. Nothing more.
This effect can be achieved by adjusting the upright mounted pushrod position to change jacking of the inside/outside wheels with steering angle.
I Bow to your superior knowledge my friend. For future use and improved understanding, what does the adjustment you describe actually adjust? Surely there’s an abridged description! Many thanks in advance.
I need to first say that I am not a suspension designer, only a track-side operator - so my explanation may be lacking the detail you desire.
In lower level formula cars (F3, Super Formula, etc.) and in some GT(ish) cars (DTM, Super GT), the position of the upright mounted pushrod can be adjusted relative to the x-axis of the car (length of the car). Generally it can only be adjusted by a few millimeters, but the effect of moving this position forward and backward is to adjust the kingpin axis angle and therefore the y-axis movement of the suspension with steering inputs. The change in geometry results in a different balance of forces in the system. For more detail I would suggest the book
Race Car Vehicle Dynamics, it was written years ago but I believe it is still the most complete guide to these sorts of things.
Below is an image from the Super Formula manual showing the location of the UMP adjustment.
https://imgur.com/a/MCgzU4o
I realize this post is not specifically about the RB15 and therefore has gone a bit off topic, sorry for that! Anything further I'll try to keep to PM
