Go Back  North American Motoring > Racing & Competition > SCCA Solo and ProSolo > FSP/DSP (Street Prepared)
Has anyone had any issues with a big rear sway and stock suspension? >

Has anyone had any issues with a big rear sway and stock suspension?

FSP/DSP (Street Prepared) Have modded Cooper or Cooper S and want to run R-compound tires? Join the discussion here and find out what rules allow in this sticky-tired class!

Has anyone had any issues with a big rear sway and stock suspension?

  #1  
Old 02-11-2014, 01:06 PM
whrisk
whrisk is offline
3rd Gear
Thread Starter
Join Date: Jun 2013
Location: Tampa, FL
Posts: 175
Likes: 0
Received 1 Like on 1 Post
Has anyone had any issues with a big rear sway and stock suspension?

I have the hotchkis 25.5mm hollow rear bar with stock suspension and hankook r-comp race tires on my 08 MCS.

this past weekends autox i put the car on 2 wheels on 3 different occasions. the only thing i can think to do is put back on my stock rear sway till i get the coilovers i want.

check out the pic

http://rs903.pbsrc.com/albums/ac236/...3C.png~320x480
 
  #2  
Old 02-11-2014, 01:31 PM
Grizld700's Avatar
Grizld700
Grizld700 is offline
6th Gear
iTrader: (1)
Join Date: Apr 2010
Location: E. Iowa
Posts: 2,445
Likes: 0
Received 3 Likes on 3 Posts
What setting did you have yours set to?
 
  #3  
Old 02-11-2014, 04:22 PM
whrisk
whrisk is offline
3rd Gear
Thread Starter
Join Date: Jun 2013
Location: Tampa, FL
Posts: 175
Likes: 0
Received 1 Like on 1 Post
Originally Posted by Grizld700 View Post
What setting did you have yours set to?
I have the bar on the softest setting.
 
  #4  
Old 02-11-2014, 05:39 PM
boxter4ever's Avatar
boxter4ever
boxter4ever is offline
3rd Gear
iTrader: (1)
Join Date: Sep 2009
Location: sarasota,florida
Posts: 156
Likes: 0
Received 0 Likes on 0 Posts
Swaybar ?

Hi , just to be sure the hole on the very end towards back of car
 
  #5  
Old 02-11-2014, 05:51 PM
whrisk
whrisk is offline
3rd Gear
Thread Starter
Join Date: Jun 2013
Location: Tampa, FL
Posts: 175
Likes: 0
Received 1 Like on 1 Post
Yes, the hole on the very end of the bar.
 
  #6  
Old 02-11-2014, 06:10 PM
v10climber
v10climber is offline
6th Gear
iTrader: (1)
Join Date: May 2013
Location: FL
Posts: 1,394
Likes: 0
Received 13 Likes on 12 Posts
This happens more often than you would think. Probably a few times a year a car rolls over at auto-x. Typically they're older cars on worn out suspension running r-comps. I've never heard of a mini rolling though.

If you just have a rear bar and r-comps why aren't you running "stock" class for the last year its going to be around?

For equipment you could put on coils or even just shocks with more rebound force would keep the inside tires from unloading so violently.

I hate to say it but its probably driver technique. You need to be slower with your inputs. Turn in earlier but be gentler with the hands. Also, if the car starts to tank slap in a slalom DONT try to save it. Just get out of the gas and toss the run. That's mostly when people roll the cars is the violent back and forth that gets the car up on two wheels.

Sent from my Nexus 10 using NAMotoring
 
  #7  
Old 02-11-2014, 06:21 PM
whrisk
whrisk is offline
3rd Gear
Thread Starter
Join Date: Jun 2013
Location: Tampa, FL
Posts: 175
Likes: 0
Received 1 Like on 1 Post
Originally Posted by v10climber View Post
This happens more often than you would think. Probably a few times a year a car rolls over at auto-x. Typically they're older cars on worn out suspension running r-comps. I've never heard of a mini rolling though. If you just have a rear bar and r-comps why aren't you running "stock" class for the last year its going to be around? For equipment you could put on coils or even just shocks with more rebound force would keep the inside tires from unloading so violently. I hate to say it but its probably driver technique. You need to be slower with your inputs. Turn in earlier but be gentler with the hands. Also, if the car starts to tank slap in a slalom DONT try to save it. Just get out of the gas and toss the run. That's mostly when people roll the cars is the violent back and forth that gets the car up on two wheels. Sent from my Nexus 10 using NAMotoring
I know how to fix it, I am buying ohlins when I sell my other car. I just didn't know if anyone else has experienced anything like this.

Also, it only happened during high speed corners, slaloms the car was fine. My steering inputs were really smooth. I have been autoxing for 10 years. I need to edit down the in car video that shows my hands. You can tell when the car get up on 2 wheels.
 
  #8  
Old 02-11-2014, 07:02 PM
Btwyx
Btwyx is offline
6th Gear
iTrader: (2)
Join Date: May 2007
Location: Mountain View, CA
Posts: 3,531
Likes: 0
Received 0 Likes on 0 Posts
We have that happen with unmodified sport suspension. It doesn't seem to cause any problems.
 
  #9  
Old 02-12-2014, 08:18 AM
whrisk
whrisk is offline
3rd Gear
Thread Starter
Join Date: Jun 2013
Location: Tampa, FL
Posts: 175
Likes: 0
Received 1 Like on 1 Post
i am just going to swap back to the stock bar till i get the coilovers.
 
  #10  
Old 02-14-2014, 09:16 AM
whrisk
whrisk is offline
3rd Gear
Thread Starter
Join Date: Jun 2013
Location: Tampa, FL
Posts: 175
Likes: 0
Received 1 Like on 1 Post
in car

 
  #11  
Old 02-14-2014, 12:59 PM
squawSkiBum
squawSkiBum is offline
Moderator
Join Date: May 2012
Location: San Francisco Bay Area
Posts: 1,561
Received 190 Likes on 162 Posts
Wow, I have the Alta 22mm RSB on my car (softest setting), otherwise stock suspension and in HPDEs I haven't come anywhere close to that. It has been a long time since I last did any Auto-X, though I remember some of the FWD cars cornering like a dog at a fire hydrant. Is it possible your struts are worn out and not damping properly in quick transitions?
 
  #12  
Old 02-14-2014, 01:41 PM
v10climber
v10climber is offline
6th Gear
iTrader: (1)
Join Date: May 2013
Location: FL
Posts: 1,394
Likes: 0
Received 13 Likes on 12 Posts
Originally Posted by squawSkiBum View Post
Wow, I have the Alta 22mm RSB on my car (softest setting), otherwise stock suspension and in HPDEs I haven't come anywhere close to that. It has been a long time since I last did any Auto-X, though I remember some of the FWD cars cornering like a dog at a fire hydrant. Is it possible your struts are worn out and not damping properly in quick transitions?
You're probably not running race tires which is why you're not getting as much body roll. More grip means more roll.

To the OP...
 
  #13  
Old 02-14-2014, 03:51 PM
squawSkiBum
squawSkiBum is offline
Moderator
Join Date: May 2012
Location: San Francisco Bay Area
Posts: 1,561
Received 190 Likes on 162 Posts
You're right, not on race tires, just the stock Conti RFTs until I wear them out, which can't happen too soon. Yes more stick means more roll - have you seen the videos of the Fiat 500s flipping? Apparently SCCA had some stability concerns with the 500 for autocrossing.

Yikes - time to finally pull the trigger on the coilovers and drop the car an inch or so.
 
  #14  
Old 02-14-2014, 05:20 PM
v10climber
v10climber is offline
6th Gear
iTrader: (1)
Join Date: May 2013
Location: FL
Posts: 1,394
Likes: 0
Received 13 Likes on 12 Posts
Originally Posted by squawSkiBum View Post
You're right, not on race tires, just the stock Conti RFTs until I wear them out, which can't happen too soon. Yes more stick means more roll - have you seen the videos of the Fiat 500s flipping? Apparently SCCA had some stability concerns with the 500 for autocrossing.

Yikes - time to finally pull the trigger on the coilovers and drop the car an inch or so.
I believe the Abarth is the only one they allow to auto-x. A local club I organize with allows the regular models but we wouldn't let one run if they showed up on hoosiers

Sent from my DROID RAZR HD using NAMotoring
 
  #15  
Old 03-12-2014, 10:49 PM
miata_racer
miata_racer is offline
3rd Gear
iTrader: (1)
Join Date: Mar 2011
Posts: 171
Likes: 0
Received 0 Likes on 0 Posts
not easy to tell from a 6 second clip but it LOOKS like you're lifting off and the car was biting coming into the turn there.

FWIW I ran the hotchkis Race bar on the back of mine (solid rear bar) on the stiffiest setting and only got on 2 wheels once. On my local concrete lot on my BFGs. 15x9 fronts and 15x7.5 rears. With my STF setup on the car.

Craig WIlcox has has his old DS R56 s model on 2 wheels a few times. IT happens. I'd say put the rear bar stiffer so the back end slides more. But without seeing how the car handles and how you drive we can't assess what's really going on there.
 
  #16  
Old 03-13-2014, 06:44 AM
kyoo's Avatar
kyoo
kyoo is offline
6th Gear
iTrader: (2)
Join Date: Oct 2012
Posts: 2,631
Likes: 0
Received 1 Like on 1 Post
jeez first time seeing this thread here. hopefully with street tires this won't be as much of a problem?
 
  #17  
Old 03-13-2014, 06:56 AM
miata_racer
miata_racer is offline
3rd Gear
iTrader: (1)
Join Date: Mar 2011
Posts: 171
Likes: 0
Received 0 Likes on 0 Posts
It won't be. I never ever ever got on 2 wheels on street tires.
 
  #18  
Old 03-13-2014, 06:58 AM
kyoo's Avatar
kyoo
kyoo is offline
6th Gear
iTrader: (2)
Join Date: Oct 2012
Posts: 2,631
Likes: 0
Received 1 Like on 1 Post
Originally Posted by miata_racer View Post
It won't be. I never ever ever got on 2 wheels on street tires.
whew
 
  #19  
Old 03-13-2014, 06:48 PM
Btwyx
Btwyx is offline
6th Gear
iTrader: (2)
Join Date: May 2007
Location: Mountain View, CA
Posts: 3,531
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by Btwyx View Post
We have that happen with unmodified sport suspension. It doesn't seem to cause any problems.
It looks like I misread the original post. I thought the problem was getting on 3 wheels, we've done that and it doesn't seem to be a problem. We've never than I know of got on 2 wheels, that's scary.
 
  #20  
Old 03-13-2014, 07:35 PM
kyoo's Avatar
kyoo
kyoo is offline
6th Gear
iTrader: (2)
Join Date: Oct 2012
Posts: 2,631
Likes: 0
Received 1 Like on 1 Post
^ i think as above mentioned, it won't be happening on street tires
 
  #21  
Old 03-14-2014, 04:25 AM
yetti96's Avatar
yetti96
yetti96 is offline
6th Gear
iTrader: (1)
Join Date: Jan 2010
Location: Ave Maria, FL
Posts: 3,031
Likes: 0
Received 2 Likes on 2 Posts
Prime example of not needing race tires on a MINI for your first Auto-X outing. Glad the OP was experienced and didn't freak.
 
  #22  
Old 03-14-2014, 04:40 AM
whrisk
whrisk is offline
3rd Gear
Thread Starter
Join Date: Jun 2013
Location: Tampa, FL
Posts: 175
Likes: 0
Received 1 Like on 1 Post
yeah, i put the stock bar back on for the last event. still got the infamous front wheel drive 3 wheeling. i will just have to live with it for now till i can get my ohlins. not as fast without the rear sway bar but way more safe, lol

And if you are not on race rubber i would not be worried at all with the rear sway bar, it was very good with aggressive street tires like hankook rs3's.
 
  #23  
Old 03-14-2014, 06:37 AM
kyoo's Avatar
kyoo
kyoo is offline
6th Gear
iTrader: (2)
Join Date: Oct 2012
Posts: 2,631
Likes: 0
Received 1 Like on 1 Post
Originally Posted by yetti96 View Post
Prime example of not needing race tires on a MINI for your first Auto-X outing. Glad the OP was experienced and didn't freak.
not needing and shouldn't have - glad the rules have changed.

Originally Posted by whrisk View Post
yeah, i put the stock bar back on for the last event. still got the infamous front wheel drive 3 wheeling. i will just have to live with it for now till i can get my ohlins. not as fast without the rear sway bar but way more safe, lol

And if you are not on race rubber i would not be worried at all with the rear sway bar, it was very good with aggressive street tires like hankook rs3's.
what class are you running in?
 
  #24  
Old 03-14-2014, 06:39 AM
whrisk
whrisk is offline
3rd Gear
Thread Starter
Join Date: Jun 2013
Location: Tampa, FL
Posts: 175
Likes: 0
Received 1 Like on 1 Post
Dsp
 
  #25  
Old 03-14-2014, 07:03 AM
kyoo's Avatar
kyoo
kyoo is offline
6th Gear
iTrader: (2)
Join Date: Oct 2012
Posts: 2,631
Likes: 0
Received 1 Like on 1 Post
oh duh
 

Thread Tools
Search this Thread
Quick Reply: Has anyone had any issues with a big rear sway and stock suspension?


Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: