Dali Sway Bar Settings, Which Holes To Use Front and Rear

Which tires are you using?
I have several sets of wheels with different tires. I have experience with 215 and/or 235 in All Season, UHP, and DOT Slicks on my NSX. At the moment I run a set of Z1 Star Specs in 215, Nitto NT05 in 235, and Maxxis RC-1 in 235. I also have a 18" All Season 215 Hankook (I forgot the model).

If you're encountering that much understeer can you post a picture of your outer sidewall tire wear? Is your tire wear even at your current camber settings?
 
CB72 - do you really have a 22mm bar in the front and rear?

Your snap oversteer at 6:30 looks to be due to the steeply off-camber nature of the corner. From other laps it appears the road falls away quickly at track-out near the curbing. Since it looked like you were on the throttle, and still cornering hard at track-out on that lap, I would call that oversteer a result of the nature of the track.

As far as your understeer goes at 9:10, that is a long sweeping corner. The NSX is a well-balanced car and responds to your inputs. If you are on throttle, you unload the front tires and the car should understeer. If you're off the throttle or trail-brake, the car will typically turn better (up to a point). Try carrying more speed into that right-hand sweeper with some trail braking and coasting, then pick up throttle later in the corner to minimize your understeer. In general try trail braking more.

Also have a look at the driver development article I wrote on car control:

http://www.motoiq.com/MagazineArticles/ID/3519/DRIVER-DEVELOPMENT-Car-Control.aspx

Car wise, invest in a probe-type tire pyrometer which will tell you what you need to do with your alignment. Due to the really low front roll center, NSXs need a lot of front bar to reduce roll.

Billy
 
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I echo Billy's thoughts...posting videos with sound is a great way to help analyze where technique comes into play with handling.A good driver can work around many sub-optimal inherent handling traits of most cars.
 
CB72 - do you really have a 22mm bar in the front and rear?

Your snap oversteer at 6:30 looks to be due to the steeply off-camber nature of the corner. From other laps it appears the road falls away quickly at track-out near the curbing. Since it looked like you were on the throttle, and still cornering hard at track-out on that lap, I would call that oversteer a result of the nature of the track.

As far as your understeer goes at 9:10, that is a long sweeping corner. The NSX is a well-balanced car and responds to your inputs. If you are on throttle, you unload the front tires and the car should understeer. If you're off the throttle or trail-brake, the car will typically turn better (up to a point). Try carrying more speed into that right-hand sweeper with some trail braking and coasting, then pick up throttle later in the corner to minimize your understeer. In general try trail braking more.

Also have a look at the driver development article I wrote on car control:

http://www.motoiq.com/MagazineArticles/ID/3519/DRIVER-DEVELOPMENT-Car-Control.aspx

Car wise, invest in a probe-type tire pyrometer which will tell you what you need to do with your alignment. Due to the really low front roll center, NSXs need a lot of front bar to reduce roll.

Billy

Billy, I read your articles with great interest and when I was a youngster, I used to hold long slides when driving my mother's rwd Fiat on ice.
I never managed to drift the NSX however given the grip at the rear and in clear I'm now driving mostly "under"...
I fully understand your comments about the long sweeping corner.
The local instructor recommended to break the corner into two parts: go straight in the first part then jerk the car to the right to take the second part.
I tried a couple of times but I had the feeling I was loosing time.
Yes, I have the Dali 22 mm bars front and rear.
Thanks for the feedback!
John
PS: I will be fitting the non-compliance bits for next year and I will invest in a pyrometer!

- - - Updated - - -

I have several sets of wheels with different tires. I have experience with 215 and/or 235 in All Season, UHP, and DOT Slicks on my NSX. At the moment I run a set of Z1 Star Specs in 215, Nitto NT05 in 235, and Maxxis RC-1 in 235. I also have a 18" All Season 215 Hankook (I forgot the model).

If you're encountering that much understeer can you post a picture of your outer sidewall tire wear? Is your tire wear even at your current camber settings?

Here are the pictures of my tires, front first then rear ( pretty worn out) .
You'll notice the one inch extreme wear both front and rear that happen after going on a track, but else pretty even wear.

Front seen from the front
DSCF5978_zps4cabfe9d.jpg

Front seen from the top
DSCF5979_zps7a5c59a6.jpg

Rear seen from the outside rear
DSCF5980_zps3245d781.jpg

Rear seen from the rear
DSCF5982_zpsa978dcd1.jpg
 
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OK people.

I had the non-compliance rear bearings and toe links installed. I had the Dali street/track front sway bar (middle setting) and Zanardi rear sway bar installed. I also had the compliance front clamps installed. I already had Bilstien shocks with stock springs. I got the car aligned by Darin at West End Alignment. I then took the car to Willow Springs (big track). I have to say that the car handled really well. Although I was not pushing too hard, I had no indications of over steer or under steer. All in all, I'm very happy with the modifications I had made.

Thanks for all of your thoughts and recommendations.

PS: Although I was not very fast (came in 6th of 7 cars in my class, but I had a blast!
 
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Thread up-date:

Since my last thread I added Dunlop Direzza II Star Spec tires, which also made a big difference in my cars handling. Up next are Zanardi springs and NSX-R upper and lower chassis bars. After these mods, I'm not sure what else I can do short of coil overs and wider wheel/tires. I'm taking my car to Chuckwalla in May. I'll report back with feedback on my modifications.
 
Thread up-date:

Since my last thread I added Dunlop Direzza II Star Spec tires, which also made a big difference in my cars handling. Up next are Zanardi springs and NSX-R upper and lower chassis bars. After these mods, I'm not sure what else I can do short of coil overs and wider wheel/tires. I'm taking my car to Chuckwalla in May. I'll report back with feedback on my modifications.
Can you tell a difference with the Type R upper and lower chassis bars?
 
Can you tell a difference with the Type R upper and lower chassis bars?

I have only drive on the street since installing then Zanardi springs and NSX-R chassis bars. The springs are definitely stiffer so the ride is very taunt. I have not taken any spirited drives to see how the chassis bars affect the cars handling. However, I'm taking the car to the track in May. I'll report back then on how the car handles.
 
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