|
Tracking / Autocross / HPDE / Drifting What these cars were built for! |
|
Thread Tools | Search this Thread |
08-29-2018, 06:12 PM | #1 |
Senior Member
Join Date: Nov 2012
Drives: SOLD...
Location: GTA Ontario
Posts: 955
Thanks: 56
Thanked 192 Times in 155 Posts
Mentioned: 7 Post(s)
Tagged: 0 Thread(s)
|
suspension tuning...
STill trying to get a handle on this...
This year I upgraded to 2 way clubsports, and i also have 22mm adj bar up front and OE bar in the rear of 2013 BRZ The car is one of the quickest locally on fast courses, and I attribute that to the big front bar primarily and the soft rear bar. On the tight courses I get my ass handed to me by twins running OE bars front and rear. Its just local stuff, and I can't be swapping out sway bars between events. So, I am looking at suggestions or advice in what I can do to loosen the car up for the slower courses. The front shocks.. currently 2 clicks softer than midpoint on rebound, comp at midpoint of adj range. Rear the reverse at 2 clicks past midpoint stiffer on rebound, again with comp at midpoint. whiteline 22mm front bar at soft kw clubsport 2 ways 340/400lb springs 3.5/2.6 fr/rr camber 0/0 toe front and rear If you could only adjust shocks and you had 1 event of the season left on a tight but bumpy course (6 runs and it looks like it will be wet..)... what would you do? For next season i will add a bigger rear bar..
__________________
WRB MT BRZ Sport Tech Delivered March 21 2013 Its mine now!!
Paid for Mar 2018 and its gone... Sept '18 tho I am sure I will miss it Replaced with 18 50th edition ND |
08-29-2018, 06:31 PM | #2 |
Join Date: Jul 2012
Drives: S2000 CR
Location: Orange County
Posts: 14,537
Thanks: 8,930
Thanked 14,187 Times in 6,839 Posts
Mentioned: 966 Post(s)
Tagged: 14 Thread(s)
|
Add rear tire pressure. You're sacrificing grip to get it looser, but if it yields better times...
|
The Following User Says Thank You to CSG Mike For This Useful Post: | Skurj (08-29-2018) |
08-29-2018, 06:52 PM | #3 |
Senior Member
Join Date: Nov 2012
Drives: SOLD...
Location: GTA Ontario
Posts: 955
Thanks: 56
Thanked 192 Times in 155 Posts
Mentioned: 7 Post(s)
Tagged: 0 Thread(s)
|
I tried that, and ended up at 28/30 as it did help, solve the mad push I experience in slower courses, but still a long ways back.
Should add thats on 245/40/17 re71's on 17x9 et 35 rpf1's all courses asphalt
__________________
WRB MT BRZ Sport Tech Delivered March 21 2013 Its mine now!!
Paid for Mar 2018 and its gone... Sept '18 tho I am sure I will miss it Replaced with 18 50th edition ND |
08-29-2018, 07:14 PM | #5 |
Senior Member
Join Date: Sep 2017
Drives: '15 STX
Location: San Jose, CA
Posts: 237
Thanks: 10
Thanked 157 Times in 103 Posts
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
|
What phase of the corner does the car push? Entry? Mid? Exit?
|
The Following User Says Thank You to tony_r For This Useful Post: | Racecomp Engineering (08-30-2018) |
08-29-2018, 10:00 PM | #6 |
Senior Member
Join Date: Nov 2012
Drives: SOLD...
Location: GTA Ontario
Posts: 955
Thanks: 56
Thanked 192 Times in 155 Posts
Mentioned: 7 Post(s)
Tagged: 0 Thread(s)
|
entry
__________________
WRB MT BRZ Sport Tech Delivered March 21 2013 Its mine now!!
Paid for Mar 2018 and its gone... Sept '18 tho I am sure I will miss it Replaced with 18 50th edition ND |
08-30-2018, 02:40 AM | #7 |
Senior Member
Join Date: Sep 2017
Drives: '15 STX
Location: San Jose, CA
Posts: 237
Thanks: 10
Thanked 157 Times in 103 Posts
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
|
Drive easier on entry, turn down front compression, increase rear rebound. Ordered in importance. I would also check available travel in the front at ride height.
|
The Following 2 Users Say Thank You to tony_r For This Useful Post: | GrandSport (09-24-2018), Skurj (08-30-2018) |
08-30-2018, 11:43 AM | #8 |
btr.life
Join Date: Aug 2015
Drives: 2022 GR86
Location: Arizona
Posts: 1,099
Thanks: 662
Thanked 1,094 Times in 491 Posts
Mentioned: 23 Post(s)
Tagged: 0 Thread(s)
|
Increasing rear rebound damping makes my car turn in better. Add a few clicks and see what it does.
__________________
|
The Following User Says Thank You to justinco For This Useful Post: | Skurj (08-30-2018) |
08-30-2018, 02:58 PM | #9 | |
Senior Member
Join Date: Oct 2016
Drives: 2016 Scion FRS / Chevy Colorado
Location: Ohio
Posts: 658
Thanks: 51
Thanked 564 Times in 314 Posts
Mentioned: 10 Post(s)
Tagged: 0 Thread(s)
|
Quote:
My first move would be rear rebound to allude to the question that Tony did - you're having issues with turn-in.
__________________
Kyle H. - #89 STX
|
|
08-30-2018, 03:07 PM | #10 |
Wes
Join Date: Feb 2017
Drives: Artisan Spirits '17 86
Location: Toronto
Posts: 2,812
Thanks: 1,192
Thanked 1,693 Times in 1,003 Posts
Mentioned: 21 Post(s)
Tagged: 0 Thread(s)
|
Prime the car for the corner. In F1, you see drivers making a smaller input towards the corner, then the full commitment. It sets up the balance for corner entry. But it's not two separate movements, it's one fluid sort of transition. Hard to explain without gesticulating
__________________
Instagram: @gt86ws
|
The Following User Says Thank You to StraightOuttaCanadaEh For This Useful Post: | Skurj (09-01-2018) |
09-01-2018, 11:13 AM | #11 | |
Senior Member
Join Date: Nov 2012
Drives: SOLD...
Location: GTA Ontario
Posts: 955
Thanks: 56
Thanked 192 Times in 155 Posts
Mentioned: 7 Post(s)
Tagged: 0 Thread(s)
|
Quote:
__________________
WRB MT BRZ Sport Tech Delivered March 21 2013 Its mine now!!
Paid for Mar 2018 and its gone... Sept '18 tho I am sure I will miss it Replaced with 18 50th edition ND |
|
09-05-2018, 10:24 AM | #12 |
Junior Member
Join Date: Mar 2016
Drives: brz
Location: MI
Posts: 1
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
|
on very tight turns brake hard and late, ease off the brakes as you near the apex. this is how i kill under steer in auto x and at the track.
|
09-09-2018, 03:00 AM | #13 | |
Senior Member
Join Date: Apr 2017
Drives: 2013 Blue Subaru BRZ. 6 Spd manual
Location: Thousand Oaks, CA
Posts: 206
Thanks: 138
Thanked 155 Times in 94 Posts
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
|
Quote:
As @stxbrz suggested, you may not need to change anything aside from your driving style. Try to adjust your inputs so that the front tires are properly loaded as you steer the car. As far as your next event is concerned, you said it looks like it will be wet, so I would suggest that you soften the dampers at least a few clicks on both ends, but especially in the rear so you can extract more grip from the tires. Yeah it might push more, but if its wet you can always use the loud peddle to make it rotate. The reason I suggest slackening off the dampers is because in the wet, the most important thing is getting the power down. The more power you can put down, the more time you can spend on the throttle propelling yourself to the finish line. The guys/gals that win are the ones that have the highest average throttle % over the course of the lap (without sliding). In the future, an adjustable rear bar sounds like an appropriate fix. Looking at this from a different angle however, you could save some money by forgoing the rear bar in the future, and instead try dialing in just a hint of tow-out to the rear, which will help with getting the car to rotate in the tight stuff. Go to a faster course where tow-out may not be preferable, and you can compensate by putting that whiteline sway bar to the stiffer setting and perhaps see some crisper turn-in as a bonus. Not saying that's what you should do, just giving an alternative. Just my 2 cents. Spend however you like. |
|
The Following User Says Thank You to BlueWhelan For This Useful Post: | Skurj (09-09-2018) |
09-09-2018, 06:42 PM | #14 |
Senior Member
Join Date: Nov 2012
Drives: SOLD...
Location: GTA Ontario
Posts: 955
Thanks: 56
Thanked 192 Times in 155 Posts
Mentioned: 7 Post(s)
Tagged: 0 Thread(s)
|
Thanks all, I am lousy at even remembering how the car reacted in a specific turn, i usually come back from the run with a general overall feeling... I've been doing this for about 4 years now between an NB1 for a seasons and then 1 season in a poorly prepped STX BRZ followed by a similarly poorly prepped stock BRZ Lol...
This year I went in with a better prepped STX BRZ though missing all power upgrades and the rear bar. I claimed our regional STX class win for the season, and I think I am top 3 overall, so happy with the result, though that last event (the wet) may have been the clincher as far as overall is concerned... The wet event turned out to be not so wet but a tighter course, and I did ok, I reduced compression 1 click in the front, and ran 28/32 for pressures and the car was decent, and i was pretty satisfied with my times. Driving should be my focus for the forseeable future... BUT... I now need to learn a new platform, leaving the twin behind (for now) and running an ND next year in STR.
__________________
WRB MT BRZ Sport Tech Delivered March 21 2013 Its mine now!!
Paid for Mar 2018 and its gone... Sept '18 tho I am sure I will miss it Replaced with 18 50th edition ND |
|
|
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Where to go for suspension tuning | merino_frs | Northern California | 0 | 12-05-2013 11:53 AM |
Ford Racing Suspension tuning guide? | mines13 | Suspension | Chassis | Brakes -- Sponsored by 949 Racing | 1 | 01-22-2013 01:00 PM |
Suspension tuning 101 (Making it Stick) | taosracer | Suspension | Chassis | Brakes -- Sponsored by 949 Racing | 11 | 07-04-2012 05:43 PM |
HKS Tuning Suspension and Exhaust | RidetheTran | FR-S & 86 Photos, Videos, Wallpapers, Gallery Forum | 1 | 04-09-2012 12:05 AM |
Subaru BRZ different suspension / springs tuning | ahausheer | Suspension | Chassis | Brakes -- Sponsored by 949 Racing | 35 | 12-06-2011 12:52 PM |