follow ft86club on our blog, twitter or facebook.
FT86CLUB
Ft86Club
Speed By Design
Register Garage Members List Calendar Search Today's Posts Mark Forums Read

Go Back   Scion FR-S Forum | Subaru BRZ Forum | Toyota 86 GT 86 Forum | AS1 Forum - FT86CLUB > Technical Topics > Tracking / Autocross / HPDE / Drifting

Tracking / Autocross / HPDE / Drifting What these cars were built for!


User Tag List

Reply
 
Thread Tools Search this Thread
Old 06-27-2015, 12:51 PM   #1
owenxguo
Member
 
owenxguo's Avatar
 
Join Date: Mar 2014
Drives: MY13 BRZ
Location: Bay Area
Posts: 31
Thanks: 0
Thanked 11 Times in 5 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Unhappy Power steering issue with slicks?

I got some new Hankook slicks for previous race, it was my first time run with slicks on BRZ. However with slicks the power steering stops working(or feel like no power steering) sometimes, mostly during high speed turns, some low speed turns too. But when I switch back to AD08R the problem disappeared. 2 of my other friends has same issue on their GT86, so I assuming this is a common problem with our cars??? I was wondering if any of you found out solution to fix this issue?
owenxguo is offline   Reply With Quote
Old 06-28-2015, 10:22 PM   #2
troek
Senior Member
 
troek's Avatar
 
Join Date: Feb 2013
Drives: 2012 Toyota 86
Location: Japan
Posts: 1,293
Thanks: 333
Thanked 396 Times in 285 Posts
Mentioned: 17 Post(s)
Tagged: 0 Thread(s)
Garage
I had this happen to me on rs-3s this weekend right after a right hand sweeper transitions quickly to a sharp left. felt like i was driving a go kart for a second. theres a more extensive thread about this somewhere on here, by i think evasive motor sports or element tuning.
http://www.ft86club.com/forums/showthread.php?p=250538
troek is offline   Reply With Quote
Old 06-29-2015, 01:18 PM   #3
ja1217
Senior Member
 
Join Date: Mar 2012
Drives: 2004 Toyota RAV-4 5M
Location: MD
Posts: 297
Thanks: 13
Thanked 155 Times in 102 Posts
Mentioned: 3 Post(s)
Tagged: 1 Thread(s)
Yeah, this seems to be pretty common on the track, especially when you start using stickier tires. It happens to me all the time and you just get used to it. I'm so used to it now that I didn't even remember that this was an issue until I let someone else drive my car on the track and he complained about the steering getting weird at times.
ja1217 is offline   Reply With Quote
Old 06-30-2015, 06:53 AM   #4
AZP Installs
 
AZP Installs's Avatar
 
Join Date: Oct 2011
Drives: '11 STi->'14 BRZ | '14 Touareg TDi
Location: Kenilworth, NJ
Posts: 1,266
Thanks: 359
Thanked 549 Times in 369 Posts
Mentioned: 49 Post(s)
Tagged: 0 Thread(s)
Send a message via AIM to AZP Installs
If you are getting the sensation that the PS isn't working, it means that your car is too low for those slicks. We had this issue when running Continental Race Tires, we raised the car slightly and the binding went away in the turns.

-mike
AZP Installs is offline   Reply With Quote
The Following User Says Thank You to AZP Installs For This Useful Post:
Dream20b (06-30-2015)
Old 06-30-2015, 08:20 AM   #5
troek
Senior Member
 
troek's Avatar
 
Join Date: Feb 2013
Drives: 2012 Toyota 86
Location: Japan
Posts: 1,293
Thanks: 333
Thanked 396 Times in 285 Posts
Mentioned: 17 Post(s)
Tagged: 0 Thread(s)
Garage
what is actually binding, the tie rods at too extreme of an angle? im lowered only 30 mm and not even on slicks.
troek is offline   Reply With Quote
Old 07-02-2015, 12:09 AM   #6
owenxguo
Member
 
owenxguo's Avatar
 
Join Date: Mar 2014
Drives: MY13 BRZ
Location: Bay Area
Posts: 31
Thanks: 0
Thanked 11 Times in 5 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quote:
Originally Posted by AZP Installs View Post
If you are getting the sensation that the PS isn't working, it means that your car is too low for those slicks. We had this issue when running Continental Race Tires, we raised the car slightly and the binding went away in the turns.

-mike
I will try raise the car a bit and try, my car is running complete racerX arms with whiteline roll center adjuster tie rod joint, and I am not a fan lower my car a lot, didn't thought this way.
owenxguo is offline   Reply With Quote
Old 07-02-2015, 01:01 AM   #7
Sleepless
Senior Member
 
Sleepless's Avatar
 
Join Date: Apr 2014
Drives: 2014 BRZ
Location: Redmond, WA
Posts: 628
Thanks: 295
Thanked 373 Times in 220 Posts
Mentioned: 8 Post(s)
Tagged: 0 Thread(s)
My impression is that this happens while trail braking too hard and ABS is about to engage. Easing off the brakes just a bit makes it go away.

I wonder if there is a power drop to the steering due to power used by ABS??
__________________
Pete
14 Track BRZ (Build Thread)
Sleepless is offline   Reply With Quote
Old 07-02-2015, 04:59 PM   #8
FingR-S
I got sucked into boost..
 
FingR-S's Avatar
 
Join Date: Jul 2013
Drives: Whiteout FR-S & Supercharged BRZ
Location: Half Moon Bay, CA
Posts: 91
Thanks: 86
Thanked 33 Times in 23 Posts
Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
Garage
Quote:
Originally Posted by Sleepless View Post
My impression is that this happens while trail braking too hard and ABS is about to engage. Easing off the brakes just a bit makes it go away.

I wonder if there is a power drop to the steering due to power used by ABS??


I've experienced the same thing - My car is lowered as well on 245 17 RS-3's
I've learned not to trail brake on tight, high G corners. It definitely feels like ABS kicking in when you don't want it.. possibly affecting power steering.
I haven't tried the same tight roads with the pedal dance engaged (all aides off). I always run with TC turned off, but not the pedal dance as much. I need to try this and see if that helps at all.
__________________
For sale: 2013 BRZ Vortech Supercharged with nice updates.
Vortech Supercharger - Perrin exhaust - 245 RS3 on RPF1's
FingR-S is offline   Reply With Quote
Old 07-02-2015, 05:33 PM   #9
Sleepless
Senior Member
 
Sleepless's Avatar
 
Join Date: Apr 2014
Drives: 2014 BRZ
Location: Redmond, WA
Posts: 628
Thanks: 295
Thanked 373 Times in 220 Posts
Mentioned: 8 Post(s)
Tagged: 0 Thread(s)
Quote:
Originally Posted by FingR-S View Post
I've experienced the same thing - My car is lowered as well on 245 17 RS-3's
I've learned not to trail brake on tight, high G corners. It definitely feels like ABS kicking in when you don't want it.. possibly affecting power steering.
I haven't tried the same tight roads with the pedal dance engaged (all aides off). I always run with TC turned off, but not the pedal dance as much. I need to try this and see if that helps at all.
I always use pedal dance.

Mine is lowered 20mm.

Have experienced this on several tires: PSS, AD08, RE11, NT01 and Z2 Star Spec
__________________
Pete
14 Track BRZ (Build Thread)
Sleepless is offline   Reply With Quote
The Following User Says Thank You to Sleepless For This Useful Post:
FingR-S (07-02-2015)
Old 06-02-2016, 12:11 PM   #10
Pat
Senior Member
 
Pat's Avatar
 
Join Date: Feb 2014
Drives: 2014 BRZ
Location: Denver, CO
Posts: 1,210
Thanks: 916
Thanked 707 Times in 407 Posts
Mentioned: 28 Post(s)
Tagged: 2 Thread(s)
Garage
Quote:
Originally Posted by AZP Installs View Post
If you are getting the sensation that the PS isn't working, it means that your car is too low for those slicks. We had this issue when running Continental Race Tires, we raised the car slightly and the binding went away in the turns.

-mike
FWIW I experience this on stock suspension with BFG R1S tires.
Pat is offline   Reply With Quote
The Following User Says Thank You to Pat For This Useful Post:
Icecreamtruk (06-27-2017)
Old 06-04-2016, 02:31 AM   #11
zdr93523
Senior Member
 
zdr93523's Avatar
 
Join Date: Apr 2013
Drives: 2013 BRZ Limited
Location: Utah
Posts: 631
Thanks: 447
Thanked 341 Times in 166 Posts
Mentioned: 5 Post(s)
Tagged: 2 Thread(s)
Garage
I run Pirelli DH Slicks and have the same thing occur. I think it is definitely the fact that we have waaaay more grip than the system was designed to operate with.
__________________
Instagram: @zdr_93523
Youtube: https://www.youtube.com/user/zdr93523
Pink Ribbon Racing 2013 BRZ Limited NASA ST2 and TT2 race car
www.makesmodels.com
www.camautomag.com
zdr93523 is offline   Reply With Quote
The Following 2 Users Say Thank You to zdr93523 For This Useful Post:
Icecreamtruk (06-27-2017), Pat (06-05-2016)
Old 06-04-2016, 02:42 AM   #12
Fish Eagle
Platinum Member
 
Fish Eagle's Avatar
 
Join Date: Mar 2013
Drives: Toyota 86 Vortech SC
Location: Nelspruit, South Africa
Posts: 1,210
Thanks: 615
Thanked 1,011 Times in 537 Posts
Mentioned: 41 Post(s)
Tagged: 0 Thread(s)
Garage
I get the same with stock suspension and semi-slicks.
I'm so used to it, I don't notice it anymore.
__________________
Fish Eagle is offline   Reply With Quote
Old 06-27-2017, 07:29 AM   #13
Cybmx
Senior Member
 
Join Date: Nov 2015
Drives: 2016 Hyperblue Brz
Location: PA
Posts: 133
Thanks: 32
Thanked 25 Times in 21 Posts
Mentioned: 1 Post(s)
Tagged: 1 Thread(s)
Anyone got a fix for this yet?
Cybmx is offline   Reply With Quote
Old 06-27-2017, 09:44 AM   #14
Icecreamtruk
Senior Member
 
Join Date: Dec 2015
Drives: Track preped NA FRS
Location: Montreal, Canada
Posts: 754
Thanks: 775
Thanked 493 Times in 298 Posts
Mentioned: 10 Post(s)
Tagged: 0 Thread(s)
Quote:
Originally Posted by Cybmx View Post
Anyone got a fix for this yet?
Man handle the steering wheel. The steering still works, you just have to use more force on it. Think of it this way, if you arent getting to the point it shuts off, you can still corner faster there
Icecreamtruk is offline   Reply With Quote
The Following User Says Thank You to Icecreamtruk For This Useful Post:
Cybmx (06-27-2017)
 
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Steering issue under braking ! AJ PwR Tracking / Autocross / HPDE / Drifting 60 08-16-2016 11:36 PM
Possible Steering Issue ? TJB_902 Suspension | Chassis | Brakes -- Sponsored by 949 Racing 5 06-24-2015 01:38 AM
power steering ender2664 Engine, Exhaust, Transmission 32 03-21-2015 04:16 PM
Steering wheel issue Khalis Issues | Warranty | Recalls / TSB 1 05-04-2013 01:19 AM
Electric power steering madfast Scion FR-S / Toyota 86 GT86 General Forum 33 10-13-2011 10:11 AM


All times are GMT -4. The time now is 03:39 AM.


Powered by vBulletin® Version 3.8.4
Copyright ©2000 - 2019, Jelsoft Enterprises Ltd.
Garage vBulletin Plugins by Drive Thru Online, Inc.