I've been slowly figuring this stuff out over the years as a sim driver, and it's incredible to have such a concise explanation of what is going on, and why. I've watched and read an insane amount of material about suspension tuning, and somehow no one else has put this info together in a way that made sense to me. Cheers!
@@dreamer_36 That’s exactly right. Coefficient of friction x vertical load = Total friction. Think of it this way. If you add 1 unit of downforce, you get 1 extra unit of friction. But if you add 2 units of downforce, instead of getting 2 extra units of friction, you’ll get 1.8 extra units instead.
This example doesn't account for suspension geometry. Friction might decrease but the grip increases, that is because most (especially sports) cars have negative camber. Meaning tire contact patch gets bigger in a corner.
2:03 "for a given lateral acceleration, nothing we do to the setup of the car, will change the amount of total lateral load transfer" yet at 1:32 lateral load transfer = (lateral acceleration)/(track width) so... wouldn't changing the track width affect lateral load transfer... for a given lateral acceleration?
You're correct - the only way to change the lateral load transfer for a given lateral acceleration is to change the track width. At 2:03 Tim is referring to setup changes such as tyre pressure, alignment etc. Thanks for the comment! - Markku
There are many ways to reach the same goals when it comes to learning. Some cost more in time, some in money, some in both, although to be fair this course is only 12 months old so might not have been much help anyway 😎 - Taz.
BUT, the total lateral load transfer is mostly irrelevant, as every section of the track has a finite time for load to transfer. The speed of load transfer is what matters most
Yes of course, but less cornering force means less lateral G’s…so you understand? Pratically it means that you are reducing your speed in corners, which obviously is the last thing you want if you are racing.
Take $25 USD off ANY HP Academy course with this coupon: UA-cam25
Enroll now: hpcdmy.co/25offytc - Taz 👨🏻
I've been slowly figuring this stuff out over the years as a sim driver, and it's incredible to have such a concise explanation of what is going on, and why. I've watched and read an insane amount of material about suspension tuning, and somehow no one else has put this info together in a way that made sense to me. Cheers!
"The inside tires gain less, than the outside tires lose" - and there was my ah-ha! moment 👏👏👏
thank you for calling it load rather than weight transfer.
NERD
@@satanaz amateur
Incel?
Great explanation of a topic that’s easily confused or misunderstood.
Keep it the great content 🙌🏻 thanks guys
Are u saying that as you increase the "normal" force on the tyres the coefficient of friction decreases? That doesn't sound right? 6:18
@@dreamer_36 That’s exactly right. Coefficient of friction x vertical load = Total friction. Think of it this way. If you add 1 unit of downforce, you get 1 extra unit of friction. But if you add 2 units of downforce, instead of getting 2 extra units of friction, you’ll get 1.8 extra units instead.
This example doesn't account for suspension geometry. Friction might decrease but the grip increases, that is because most (especially sports) cars have negative camber. Meaning tire contact patch gets bigger in a corner.
2:03 "for a given lateral acceleration, nothing we do to the setup of the car, will change the amount of total lateral load transfer" yet at 1:32 lateral load transfer = (lateral acceleration)/(track width) so... wouldn't changing the track width affect lateral load transfer... for a given lateral acceleration?
You're correct - the only way to change the lateral load transfer for a given lateral acceleration is to change the track width. At 2:03 Tim is referring to setup changes such as tyre pressure, alignment etc. Thanks for the comment! - Markku
wtf dude...
all I've been tweaking -successfully- for years of trial and error was taught... right here by you.
damn
There are many ways to reach the same goals when it comes to learning. Some cost more in time, some in money, some in both, although to be fair this course is only 12 months old so might not have been much help anyway 😎 - Taz.
@@hpa101 time for amateurs and money for pros ;)
What course is it? He said motorsport suspension course but the closest one I found was called suspension tuning and optimisation?
That's the one! We have a bad habit of making a course, and then deciding a name afterwards sorry!
BUT, the total lateral load transfer is mostly irrelevant, as every section of the track has a finite time for load to transfer. The speed of load transfer is what matters most
Another quantity HPA blog. Awesome content. It should always end up 100 %of transfer. So informative.🆒🙏👍🤟👏💯🔥
How do you determine the CoG?
technically, can't we reduce the lateral load transfer if we reduce cornering force?
Yes of course, but less cornering force means less lateral G’s…so you understand? Pratically it means that you are reducing your speed in corners, which obviously is the last thing you want if you are racing.
do you guys cover transient load transfer (lateral and longitudinal)?
do you use any vehicle dynamics simulation software over the course?