Chassis Rake and it's effect on balance / handling
01-18-2018, 07:22 PM
#16
Rennlist
Basic Site Sponsor
Basic Site Sponsor
Join Date: Jun 2008
Location: Durham, NC and Virginia International Raceway
Posts: 18,644
Received 2,793 Likes
on
1,651 Posts
I'm measuring off jack points (furthest forward and furthest rear under the rocker panel pinch seam) to the ground or suspension pickup points to the ground.
If you measure where I measure, you'll get what I get, I'll bet.
IF the nose were truly up more than the back, that would screw up undercar aero all kinds of nasty ways. Center of pressure needs to be further forward, even on a non-aero car.
__________________
-Peter Krause
www.peterkrause.net
www.gofasternow.com
"Combining the Art and Science of Driving Fast!"
Specializing in Professional, Private Driver Performance Evaluation and Optimization
Consultation Available Remotely and at VIRginia International Raceway
-Peter Krause
www.peterkrause.net
www.gofasternow.com
"Combining the Art and Science of Driving Fast!"
Specializing in Professional, Private Driver Performance Evaluation and Optimization
Consultation Available Remotely and at VIRginia International Raceway
01-18-2018, 07:29 PM
#17
Originally Posted by ProCoach
Hahaha! THAT'S what it is!
I'm measuring off jack points (furthest forward and furthest rear under the rocker panel pinch seam) to the ground or suspension pickup points to the ground.
If you measure where I measure, you'll get what I get, I'll bet.
IF the nose were truly up more than the back, that would screw up undercar aero all kinds of nasty ways. Center of pressure needs to be further forward, even on a non-aero car.
I'm measuring off jack points (furthest forward and furthest rear under the rocker panel pinch seam) to the ground or suspension pickup points to the ground.
If you measure where I measure, you'll get what I get, I'll bet.
IF the nose were truly up more than the back, that would screw up undercar aero all kinds of nasty ways. Center of pressure needs to be further forward, even on a non-aero car.
01-18-2018, 07:43 PM
#18
Rennlist
Basic Site Sponsor
Basic Site Sponsor
Join Date: Jun 2008
Location: Durham, NC and Virginia International Raceway
Posts: 18,644
Received 2,793 Likes
on
1,651 Posts
01-19-2018, 05:51 PM
#19
Rennlist Member
Originally Posted by ProCoach
Look for the best balance and most go too low. Never seen negative rake (front higher than the back) on a well handling car, only to fix a major problem before you can fix it correctly.
01-19-2018, 09:08 PM
#20
Rennlist
Basic Site Sponsor
Basic Site Sponsor
Join Date: Jun 2008
Location: Durham, NC and Virginia International Raceway
Posts: 18,644
Received 2,793 Likes
on
1,651 Posts
01-19-2018, 09:18 PM
#21
01-19-2018, 09:20 PM
#22
Addict
Rennlist Member
Rennlist Member
01-19-2018, 10:18 PM
#24
Addict
Rennlist Member
Rennlist Member
01-20-2018, 02:03 PM
#25
Registered User
Aero results on an SD stick provided, coaching available.
Hi all, AudiOn19s , Drive 7 hrs to Toronto and we can blow your car in a full scale windtunnel, rake the car 1/4" a time. Then you will have you answer. Mantissport is planning 2-3 hrs in February in the tunnel. Anyone with interest $1k for a base blow, $1,500 we get 3-4 blows in with changes made. 905-844-6219
