captdistraction
GrumpyRacer
I’m starting to get real comfortable in my car, but one of the things I’m chasing is that the car can get fairly pushy on entry in medium speed corners (and some lower speed ones as well, not many high speed corners out here for me to qualify one way or another). However, all of my adjustments so far have just changed when, how, and to what degree the oversteer is on mid and corner exit. (there’s logical reasons why, more on that later)
What I’m seeing in data is I’m often adding more wheel than the car is turning, and spending time modulating throttle/gas mid corner to try to get the car’s nose going where I want and getting the rotation to happen earlier in the turn. I’m also not seeing a ton of attempt by me to carry too much speed into a corner, at least not compare to the peers I’m running against.
Here’s some video where you can see it happen:
– race on a medium length track with lots of switchbacks, sweepers and “carousel” type corners
– testing at a short track on 295s
The car’s setup:
JRZ Motorsports 1132 dampers (set to OOB race baseline)
600F / 300R spring rates (rear spring over damper, true Coilover)
Eibach front bar, full soft
18mm V6 convertible rear swaybar
(some minor stuff like rod-end LCA/UCA and medium relocations on each for “in the middle” approach to rear antisquat).
Very high rear roll center setting on watts link (BMR, chassis mount)
315-30-18 Hoosier R7 tires in square
Alignment 3.3/3.4* camber (by my gauge, may not be accurate), 0 toe slightly towards 0.1* out
Known issues:
I’ve been running too much rear wing, I pulled some out and found improvement
I have not corner balanced the car (WHAAAAT?! Problem one right there)
Some weight on the front that can stand to go (both sprung and unsprung, probably 30-40lbs between rotors, braces, and unneeded hardware)
I was running slightly too much front camber (hard to adjust my existing camber plates trackside as they require removal) as told by my pyrometer (insides would be a bit on the hot side.
What else should I be looking at? Should I consider trying some lighter front springs (like 550 or even 500? I have plenty of compression damping range to play with if I need to stiffen it back up)
In for thoughts, don’t underestimate my lack of knowledge in chassis setup
What I’m seeing in data is I’m often adding more wheel than the car is turning, and spending time modulating throttle/gas mid corner to try to get the car’s nose going where I want and getting the rotation to happen earlier in the turn. I’m also not seeing a ton of attempt by me to carry too much speed into a corner, at least not compare to the peers I’m running against.
Here’s some video where you can see it happen:
The car’s setup:
JRZ Motorsports 1132 dampers (set to OOB race baseline)
600F / 300R spring rates (rear spring over damper, true Coilover)
Eibach front bar, full soft
18mm V6 convertible rear swaybar
(some minor stuff like rod-end LCA/UCA and medium relocations on each for “in the middle” approach to rear antisquat).
Very high rear roll center setting on watts link (BMR, chassis mount)
315-30-18 Hoosier R7 tires in square
Alignment 3.3/3.4* camber (by my gauge, may not be accurate), 0 toe slightly towards 0.1* out
Known issues:
I’ve been running too much rear wing, I pulled some out and found improvement
I have not corner balanced the car (WHAAAAT?! Problem one right there)
Some weight on the front that can stand to go (both sprung and unsprung, probably 30-40lbs between rotors, braces, and unneeded hardware)
I was running slightly too much front camber (hard to adjust my existing camber plates trackside as they require removal) as told by my pyrometer (insides would be a bit on the hot side.
What else should I be looking at? Should I consider trying some lighter front springs (like 550 or even 500? I have plenty of compression damping range to play with if I need to stiffen it back up)
In for thoughts, don’t underestimate my lack of knowledge in chassis setup