Is it normal for the rear end to "wander" under acceleration? - Page 3

mcsoul · 11-01-2016, 09:29 AM

I was thinking about this slip sensation you guys are describing and then I remembered watching video of the initial reviews for the Ferrari 488, it has something called SSC (Side slip angle control) which softens the dampers in the rear to help find traction under load. The reviewers (more than one) described a sensation that sounds similar to what you are talking about. Then I remembered that the 488 has very similar MRC dampers from Delphi, maybe SSC (or something very similar in code base) is just a software enhancement that can be added to any Delphi MRC deployment and not necessarily proprietary to Ferrari.

crankaholic · 11-01-2016, 10:59 AM

Quote:

Originally Posted by mcsoul

I was thinking about this slip sensation you guys are describing and then I remembered watching video of the initial reviews for the Ferrari 488, it has something called SSC (Side slip angle control) which softens the dampers in the rear to help find traction under load. The reviewers (more than one) described a sensation that sounds similar to what you are talking about. Then I remembered that the 488 has very similar MRC dampers from Delphi, maybe SSC (or something very similar in code base) is just a software enhancement that can be added to any Delphi MRC deployment and not necessarily proprietary to Ferrari.

I read about that system on the 488, it did seem like it could be just software but you never know with these things. I would imagine the sensation is a bit similar - only Camaro doesn't have the system and everything flexes side-to-side as well as up-and-down. BMR has a few videos of the suspension during some hard driving, filmed with a gopro attached to the bottom of the car.

GM does have some brilliant chassis engineers, maybe they thought it all out and the flex is engineered into the car. I just didn't like the way it feels, knowing exactly what the car is doing and being able to control is is a big part of driving a proper sports car. I'm not going to set any lap records anyway.

crankaholic · 11-01-2016, 11:03 AM

Quote:

Originally Posted by irmb

I'm tracking my car a good bit - I've taken it to Laguna Seca and Thunderhill 5 times in the 5 months I've owned the car.

but it's also a daily driver.

So I want it track capable without going overboard.

I might call Pete at BMR and ask for his input - he seems like a solid, no BS kinda guy.

Nice! Wish I could get that much track time.

It all depends on you tolerance of a stiff ride and some extra NVH. That's always the issue with balancing a daily/track car.

I'm sure the guys at BMR will have good answers for you.

irmb · 11-01-2016, 02:52 PM

Quote:

Originally Posted by crankaholic

Nice! Wish I could get that much track time.

It all depends on you tolerance of a stiff ride and some extra NVH. That's always the issue with balancing a daily/track car.

I'm sure the guys at BMR will have good answers for you.

I talked to BMR and they agree - this is a thing.

According to them, the back end winds up enough under hard acceleration to change the drive angle - especially with the right wheel - and cause the rear end to go to the right.

ian351c · 11-08-2016, 02:16 PM

I've felt this as well. At first I thought it was tires breaking loose, ever so slightly. Since I have my winter tires on already (less than a month after I bought the car, heh) I figured they were the culprits. I'd be interested to see if any suspension upgrades make a difference or if it's just something I should get used to. I'll have to learn not to lift as soon as I feel it, which should be interesting and something I've never had to deal with before...

KILLA BEE · 11-08-2016, 02:53 PM

[QUOTE=ian351c;9396919]I've felt this as well. At first I thought it was tires breaking loose, ever so slightly. Since I have my winter tires on already (less than a month after I bought the car, heh) I figured they were the culprits. I'd be interested to see if any suspension upgrades make a difference or if it's just something I should get used to. I'll have to learn not to lift as soon as I feel it, which should be interesting and something I've never had to deal with before...[/QUOT
I have in my 1993 saturn thing was a beast

bybcous · 11-08-2016, 03:16 PM

Does not happen to me but I have the 8 speed

KILLA BEE · 11-08-2016, 03:18 PM

Quote:

Originally Posted by bybcous

Does not happen to me but I have the 8 speed

I get it on mine alot with the 8 speed

vtirocz · 11-08-2016, 05:42 PM

Quote:

Originally Posted by irmb

When I accelerate really hard in 2nd and third gear - the rear end often feels like it's "fish tailing" even though I'm not getting any wheel spin.

Wondering if this is normal? is the possible the rear links are winding up under torque or something?

Anyone else get this?

stock 2016 2ss manual. - I have done a race alignment, wheels tires and lowering springs.

I feel what your describing on my 4th gen (with '99 1LE suspension). This is one of the main reasons that I wanted to upgrade to a 6th gen, so your comments are a little discouraging. I'll need to test drive one to feel this for myself!

samsumon · 11-08-2016, 06:24 PM

Mine for sure in 2nd fishes out towards the right until I let go of the gas. 7k on the tires, look like they have enough life left. Then again, tires were cold and the car could be fully broken in.

Burly · 11-08-2016, 07:00 PM

Quote:

Originally Posted by irmb

When I accelerate really hard in 2nd and third gear - the rear end often feels like it's "fish tailing" even though I'm not getting any wheel spin.

Wondering if this is normal? is the possible the rear links are winding up under torque or something?

Anyone else get this?

stock 2016 2ss manual. - I have done a race alignment, wheels tires and lowering springs.

I have noticed this too and it's not wheel spin. I don't track but it's happened at least three times on the same exact "area" where can I do some spirited acceleration. I figured something was going to break eventually. But your response from BMR sounds plausible.

camaromatt.s · 11-08-2016, 08:12 PM

Are you guys certain you're not getting any wheel spin when it happens? Mine never does it with TC on, but if it's off and you just stomp on the throttle it will step out a little. Either way, I think it's completely normal as there's a lot of power being sent to those rear wheels under WOT.

Burly · 11-08-2016, 08:28 PM

i had everything on and in Tour.

crankaholic · 11-08-2016, 09:07 PM

Quote:

Originally Posted by vtirocz

I feel what your describing on my 4th gen (with '99 1LE suspension). This is one of the main reasons that I wanted to upgrade to a 6th gen, so your comments are a little discouraging. I'll need to test drive one to feel this for myself!

it's definitely way better than a 4th gen. I was comparing mine to my previous car with an all aluminum rear subframe/suspension with stiff poly bushings. I like my sports cars to be stiff and communicative, the stock 2SS rear end is more GT car though... a very good and well sorted GT car that puts the smackdown on an M4

11-08-2016, 02:53 PM	#34
KILLA BEE Black lightning Drives: 2021 ZL1 1LE A10 Join Date: Mar 2013 Location: Nottingham Md Posts: 1,997 View My Garage	[QUOTE=ian351c;9396919]I've felt this as well. At first I thought it was tires breaking loose, ever so slightly. Since I have my winter tires on already (less than a month after I bought the car, heh) I figured they were the culprits. I'd be interested to see if any suspension upgrades make a difference or if it's just something I should get used to. I'll have to learn not to lift as soon as I feel it, which should be interesting and something I've never had to deal with before...[/QUOT I have in my 1993 saturn thing was a beast __________________ [ 2021 Camaro ZLE 10 speed

11-08-2016, 03:16 PM	#35
bybcous Drives: 2016 Hyper Blue 1SS Join Date: Jul 2015 Location: hampton roads Posts: 2,763	Does not happen to me but I have the 8 speed __________________ 1ss/Auto-Hyper Blue acs carbon flash spoiler, bmr springs, gm clear tails. Texas speed cam, 223/227 .635/.635 116 LSA, Kooks Long Tube Headers with green cats, MSD Atomic Air Force Intake, CAI Cold Air Intake, QTP cutouts. 503 hp Best so far 11.5 at 123 with a 1.83 60ft. BMR lower and upper trailing arms and upper control arms,E85 DELIVERED 12/29/15 http://youtube.com/bybcous " no talking only racing on my youtube"

11-01-2016, 09:29 AM	#29
mcsoul Drives: Want a gen 6 Join Date: Jan 2013 Location: 75089 Posts: 1,032	I was thinking about this slip sensation you guys are describing and then I remembered watching video of the initial reviews for the Ferrari 488, it has something called SSC (Side slip angle control) which softens the dampers in the rear to help find traction under load. The reviewers (more than one) described a sensation that sounds similar to what you are talking about. Then I remembered that the 488 has very similar MRC dampers from Delphi, maybe SSC (or something very similar in code base) is just a software enhancement that can be added to any Delphi MRC deployment and not necessarily proprietary to Ferrari.

11-08-2016, 02:16 PM	#33
ian351c Drives: 2017 Camaros 2SS Join Date: Oct 2016 Location: MI, USA Posts: 15	I've felt this as well. At first I thought it was tires breaking loose, ever so slightly. Since I have my winter tires on already (less than a month after I bought the car, heh) I figured they were the culprits. I'd be interested to see if any suspension upgrades make a difference or if it's just something I should get used to. I'll have to learn not to lift as soon as I feel it, which should be interesting and something I've never had to deal with before...

11-08-2016, 06:24 PM	#38
samsumon Drives: 4 wheels Join Date: Dec 2009 Location: Earth Posts: 1,351	Mine for sure in 2nd fishes out towards the right until I let go of the gas. 7k on the tires, look like they have enough life left. Then again, tires were cold and the car could be fully broken in.

11-08-2016, 08:12 PM	#40
camaromatt.s Drives: 2016 2SS Join Date: Oct 2016 Location: Georgia Posts: 44	Are you guys certain you're not getting any wheel spin when it happens? Mine never does it with TC on, but if it's off and you just stomp on the throttle it will step out a little. Either way, I think it's completely normal as there's a lot of power being sent to those rear wheels under WOT.

11-08-2016, 08:28 PM	#41
Burly Drives: 2016 Camaro 2SS Join Date: Apr 2016 Location: Spotsylvania, VA Posts: 724 View My Garage	i had everything on and in Tour.

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