What adjustments do change first!
#1
What adjustments do change first!
Ok guy's,
Just curious on people's thoughts on chassis changes that make the most difference to how a car handles!
I often find myself with a car that when the conditions are right I am not far off the fast guy's and can have .10 -.20 consistency (on really good days) but when track conditions change I struggle to find the right changes to counter those conditions.
I have a list of things I change in order of my percieved top priority first.
1 - Tyres (often controlled but otherwise copy the fast guy's!)
2 - Droop/ride height
3 - Springs
Whenever I change things like shock location, toe, cambers etc I really don't notice any difference, maybe it's just me?
Also when you guy's make these smaller adjustments are you adjusting for better laptimes or better consistency which will lead to better laptimes?
Just curious on people's thoughts on chassis changes that make the most difference to how a car handles!
I often find myself with a car that when the conditions are right I am not far off the fast guy's and can have .10 -.20 consistency (on really good days) but when track conditions change I struggle to find the right changes to counter those conditions.
I have a list of things I change in order of my percieved top priority first.
1 - Tyres (often controlled but otherwise copy the fast guy's!)
2 - Droop/ride height
3 - Springs
Whenever I change things like shock location, toe, cambers etc I really don't notice any difference, maybe it's just me?
Also when you guy's make these smaller adjustments are you adjusting for better laptimes or better consistency which will lead to better laptimes?
#2
Tech Lord
iTrader: (86)
Ok guy's,
Just curious on people's thoughts on chassis changes that make the most difference to how a car handles!
I often find myself with a car that when the conditions are right I am not far off the fast guy's and can have .10 -.20 consistency (on really good days) but when track conditions change I struggle to find the right changes to counter those conditions.
I have a list of things I change in order of my percieved top priority first.
1 - Tyres (often controlled but otherwise copy the fast guy's!)
2 - Droop/ride height
3 - Springs
Whenever I change things like shock location, toe, cambers etc I really don't notice any difference, maybe it's just me?it you,
Also when you guy's make these smaller adjustments are you adjusting for better laptimes or better consistency which will lead to better laptimes?
Just curious on people's thoughts on chassis changes that make the most difference to how a car handles!
I often find myself with a car that when the conditions are right I am not far off the fast guy's and can have .10 -.20 consistency (on really good days) but when track conditions change I struggle to find the right changes to counter those conditions.
I have a list of things I change in order of my percieved top priority first.
1 - Tyres (often controlled but otherwise copy the fast guy's!)
2 - Droop/ride height
3 - Springs
Whenever I change things like shock location, toe, cambers etc I really don't notice any difference, maybe it's just me?it you,
Also when you guy's make these smaller adjustments are you adjusting for better laptimes or better consistency which will lead to better laptimes?
#4
Ok guy's,
Just curious on people's thoughts on chassis changes that make the most difference to how a car handles!
I often find myself with a car that when the conditions are right I am not far off the fast guy's and can have .10 -.20 consistency (on really good days) but when track conditions change I struggle to find the right changes to counter those conditions.
I have a list of things I change in order of my percieved top priority first.
1 - Tyres (often controlled but otherwise copy the fast guy's!)
2 - Droop/ride height
3 - Springs
Whenever I change things like shock location, toe, cambers etc I really don't notice any difference, maybe it's just me?
Also when you guy's make these smaller adjustments are you adjusting for better laptimes or better consistency which will lead to better laptimes?
Just curious on people's thoughts on chassis changes that make the most difference to how a car handles!
I often find myself with a car that when the conditions are right I am not far off the fast guy's and can have .10 -.20 consistency (on really good days) but when track conditions change I struggle to find the right changes to counter those conditions.
I have a list of things I change in order of my percieved top priority first.
1 - Tyres (often controlled but otherwise copy the fast guy's!)
2 - Droop/ride height
3 - Springs
Whenever I change things like shock location, toe, cambers etc I really don't notice any difference, maybe it's just me?
Also when you guy's make these smaller adjustments are you adjusting for better laptimes or better consistency which will lead to better laptimes?
#6
#7
Cheers for the replies guy's.
Airwave, that chart is perfect
1AGOFST, i'll take on board your comments about actually identifying where i'm losing the time not just worrying about the overall laptime only.
That combined with Airwaves chart should help out massively.
Oh, and a bit more track time also!
Airwave, that chart is perfect
1AGOFST, i'll take on board your comments about actually identifying where i'm losing the time not just worrying about the overall laptime only.
That combined with Airwaves chart should help out massively.
Oh, and a bit more track time also!
#9
Tech Master
#12
Tech Addict
I don't race. But my first adjustment is rear spring preload to control over/understeer.
#13
spring preload is not a setting. springs should always be free on the shock. Please don't tell me you are using droop screws in the arms to set your ground clearance...
#14
Tech Adept
That chart is from the Hudy setup book ;-) But to be honest, it's already quite dated. It still has tremendous value (as does the whole book), but does not reflect how the latest touring cars are setup, e.g. ignoring flex settings and having stuff like gurney strip.
For me the order would be:
1. tires
2. springs
3. oil in shocks and diff
4. droop/rear toe in/flex
5. all the other settings
When the grip changes during the race my best bet would be either stiffer springs or stiffening the car with flex settings.
For me the order would be:
1. tires
2. springs
3. oil in shocks and diff
4. droop/rear toe in/flex
5. all the other settings
When the grip changes during the race my best bet would be either stiffer springs or stiffening the car with flex settings.
#15
The answer (as always) is "it depends". It depends on:
- What the car is doing
- What I want the car to do
- Where I already am on setup
- Where I'd normally be on setup for the track layout and grip
- How motivated I'm feeling to make time-consuming changes
For example, if the car over-rotates mid-corner then thicker diff oil would help. But if its already a bit loose on corner-exit then that would be a bad idea. So maybe I'd reduce bumpsteer or increase front track width. Unless I'm already low on bumpsteer, and can't be bothered to have the front end apart, in which case I might change springs or chassis flex.
You just need to test, test and test some more. Over the years you'll get a database in your head and a feel for what to change and when. No silver bullets or shortcuts I'm afraid!
- What the car is doing
- What I want the car to do
- Where I already am on setup
- Where I'd normally be on setup for the track layout and grip
- How motivated I'm feeling to make time-consuming changes
For example, if the car over-rotates mid-corner then thicker diff oil would help. But if its already a bit loose on corner-exit then that would be a bad idea. So maybe I'd reduce bumpsteer or increase front track width. Unless I'm already low on bumpsteer, and can't be bothered to have the front end apart, in which case I might change springs or chassis flex.
You just need to test, test and test some more. Over the years you'll get a database in your head and a feel for what to change and when. No silver bullets or shortcuts I'm afraid!