|
Suspension | Chassis | Brakes -- Sponsored by 949 Racing Relating to suspension, chassis, and brakes. Sponsored by 949 Racing. |
|
Thread Tools | Search this Thread |
09-14-2015, 11:29 PM | #1 |
Member
Join Date: Aug 2015
Drives: 2013 FRS
Location: Dahlonega GA
Posts: 28
Thanks: 0
Thanked 6 Times in 4 Posts
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
|
..Starting the quest for total neutrality.
So, I've recently purchased my beautiful "Raven". A 2013 Scion FRS in the Pearlescent Black. Bone stock, very clean. I've had it for nearly a month now. I've learned it's limitations pretty well on the Eagle RS-A's it has and the stock suspension. I'm putting a parts list together for what I want to do to the car.
So har I have Racecomp Engineering Yellow Shocks. I'm looking at sway bars and endlinks/chassis bracing now. What set of bars combined together with what adjustable end links with 250lb/in front and rear spring rates will give me neutrality? or close to 50/50? Is there some FRS/BRZ suspension calculator like FCM has a Miata suspension calculator? If so, please link me! I like being able to crunch the numbers and find what is going to be best. |
09-14-2015, 11:34 PM | #2 |
Senior Member
Join Date: Sep 2014
Drives: BRZ
Location: Los Angeles
Posts: 3,053
Thanks: 1,773
Thanked 2,451 Times in 1,271 Posts
Mentioned: 79 Post(s)
Tagged: 0 Thread(s)
|
neutral is relative. too many variables.
1. tires. 2. driving style. 3. conditions. 4. speed. 5. sum of parts. |
The Following 4 Users Say Thank You to swarb For This Useful Post: |
09-14-2015, 11:52 PM | #3 |
Because compromise ®
Join Date: Jan 2012
Drives: Red Herring
Location: australia
Posts: 7,723
Thanks: 3,993
Thanked 9,346 Times in 4,127 Posts
Mentioned: 60 Post(s)
Tagged: 0 Thread(s)
|
I am suggesting a brand that does a front and rear sway kit. Preferably adjustable. This way you are getting close to matched sway bar stiffness front and rear plus you can dial them in a little yourself.
Both Eibach and Whiteline do an adjustable kit but there are probably other kits out there.
__________________
My car is completely stock except for all the mods.
|
09-15-2015, 12:51 AM | #4 |
Senior Member
Join Date: Mar 2015
Drives: 2015 Subaru BRZ Limited CWP
Location: SoCal
Posts: 1,561
Thanks: 34
Thanked 669 Times in 469 Posts
Mentioned: 13 Post(s)
Tagged: 0 Thread(s)
|
I would go with the Hotchkis swaybar set. the front have 2 settings and rear have 4 settings. it's also developed for the stock endlinks. I'm also getting RCE yellows, but in the opposite order as you. swaybars first then springs for me. also look into a rear LCA if you don't want too much negative camber. my plan is to get the hotchkis set, go to the track, then get the RCE's and racerX LCA before going to the track again. the $$ adds up over time when modding your car even though it doesn't seem like it lol
__________________
|
The Following User Says Thank You to ryoma For This Useful Post: | ZionsWrath (09-15-2015) |
09-15-2015, 03:19 AM | #5 | |
Because compromise ®
Join Date: Jan 2012
Drives: Red Herring
Location: australia
Posts: 7,723
Thanks: 3,993
Thanked 9,346 Times in 4,127 Posts
Mentioned: 60 Post(s)
Tagged: 0 Thread(s)
|
Quote:
Don't make the mistake of keeping a record of what you have spent on your car. It will end in tears.
__________________
My car is completely stock except for all the mods.
|
|
The Following 9 Users Say Thank You to Captain Snooze For This Useful Post: | 8R6 (09-16-2015), Bergen23 (09-15-2015), cdrazic93 (09-28-2015), DustinS (09-16-2015), Freeman (09-29-2015), JEDI (09-28-2015), JustBoostin (09-16-2015), meWant (09-16-2015), ZionsWrath (09-15-2015) |
09-15-2015, 09:43 AM | #6 |
Senior Member
Join Date: Apr 2012
Drives: 22 BRZ (Previously 13 FR-S)
Location: USA
Posts: 5,794
Thanks: 2,164
Thanked 4,242 Times in 2,220 Posts
Mentioned: 48 Post(s)
Tagged: 2 Thread(s)
|
The term "total neutrality" can be a bit ambiguous. Do you mean completely neutral (i.e., 4 wheel drift) in a corner with just maintenance throttle? At what speed/radius?
I ask because I suspect a car that's setup like that will feel very loose to most. Any trail-braking will bring the rear end around, and you'll have to be careful with the throttle. I think it'll also be slower on a lot of courses because of inability to get power down on exit, unless you're absolutely comfortable managing oversteer. A tiny bit of front-end push is good for stability -- especially on higher speed corners -- and you can use trail-braking to fight the slight understeer entering corners. Just my 2c as someone who also prefers "neutral-ish" setups.
__________________
"Never run out of real estate, traction, and ideas at the same time."
2022 BRZ Build 2013 FR-S Build |
The Following 5 Users Say Thank You to DarkSunrise For This Useful Post: | Calum (09-15-2015), CSG Mike (09-15-2015), OkieSnuffBox (09-15-2015), Racecomp Engineering (09-15-2015), strat61caster (09-15-2015) |
09-15-2015, 11:11 AM | #7 |
We do also make an RCE swaybar set (hollow bars front and rear).
A lot of it will come down to alignment and making the most of the tires as you can. You may want to consider camber bolts or plates if you don't have them yet. A good amount of "from the seat" balance comes from alignment. - Andrew |
|
The Following 7 Users Say Thank You to Racecomp Engineering For This Useful Post: | cdrazic93 (09-28-2015), DustinS (09-16-2015), JEDI (09-28-2015), RJasonKlein (09-16-2015), strat61caster (09-15-2015), ultra (09-27-2015), wparsons (09-15-2015) |
09-15-2015, 11:54 AM | #8 |
Senior Member
Join Date: Apr 2013
Drives: 2005 Toyota Camry
Location: 91745
Posts: 6,562
Thanks: 493
Thanked 6,093 Times in 3,029 Posts
Mentioned: 95 Post(s)
Tagged: 3 Thread(s)
|
|
The Following 4 Users Say Thank You to mav1178 For This Useful Post: | CSG Mike (09-15-2015), drewbot (09-16-2015), Freeman (09-29-2015), Racecomp Engineering (09-15-2015) |
09-15-2015, 02:31 PM | #9 |
-
Join Date: Nov 2012
Drives: '13 FRS - STX
Location: SF Bay Area
Posts: 10,366
Thanks: 13,733
Thanked 9,479 Times in 4,998 Posts
Mentioned: 94 Post(s)
Tagged: 3 Thread(s)
|
First off what is the car doing that you are trying to correct? What isn't neutral? You cannot hope to get a proper answer from "make my car neutral" because anything anyone prescribes may work for them but not for you.
My experience is useless because I don't know what RCE does to the balance, but what they say above is absolutely true, you can get a totally neutral car from alignment tweaks alone if that's your goal, I'm really happy with stock suspension + front camber plates and 200TW competitive tires. On stock springs/dampers the car really likes having >-2.5 degrees camber up front. Edit: Autocross? Track? High speed track or low speed track? Canyons? Drift? |
09-15-2015, 08:02 PM | #10 | |
Member
Join Date: Aug 2015
Drives: 2013 FRS
Location: Dahlonega GA
Posts: 28
Thanks: 0
Thanked 6 Times in 4 Posts
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
|
Quote:
Is there a specific precision alignment that is advertised on any of the FRS forums that improve handling characteristics with stock tires/rims/suspension? I know in my Miatas I preferred 5+* Caster for initial turn in with zero toe and ~1.5* camber. |
|
The Following User Says Thank You to HatchirokuV2.0 For This Useful Post: | strat61caster (09-15-2015) |
09-15-2015, 11:33 PM | #11 |
Senior Member
Join Date: Jul 2014
Drives: 2013 Scion FR-S 10 Series
Location: Clarendon Hills, IL
Posts: 617
Thanks: 441
Thanked 356 Times in 202 Posts
Mentioned: 7 Post(s)
Tagged: 0 Thread(s)
|
Even the FR-S has a fair bit of understeer built in, although nobody will argue that oversteer can't be induced at will on tight twisties at lower speeds. My point is that the oversteer you're describing is caused by your driving style - it's really that simple.
|
The Following 5 Users Say Thank You to RJasonKlein For This Useful Post: | Calum (09-20-2015), Captain Snooze (09-16-2015), cdrazic93 (09-28-2015), strat61caster (09-16-2015), Ultramaroon (09-16-2015) |
09-16-2015, 11:33 AM | #12 | |
Senior Member
Join Date: Apr 2013
Drives: 2005 Toyota Camry
Location: 91745
Posts: 6,562
Thanks: 493
Thanked 6,093 Times in 3,029 Posts
Mentioned: 95 Post(s)
Tagged: 3 Thread(s)
|
Quote:
-alex |
|
09-16-2015, 12:12 PM | #13 |
Senior Member
Join Date: May 2014
Drives: 2017 BRZ
Location: Chicago
Posts: 3,285
Thanks: 1,256
Thanked 2,928 Times in 1,714 Posts
Mentioned: 58 Post(s)
Tagged: 0 Thread(s)
|
It feels silly to echo the previous comments, but... alignment?
Regardless of where you define "neutral" it's driver input that keeps it there. ANY reasonable setup can be made to understeer or oversteer simply by changing driver input. Understeer is "safer" in general, but a car that's slightly tuned to oversteer can be held at its limits quite easily once you know them, but still requires tuning to the comfort level and particular habits of each driver. Tuning out an undesired behavior in a given scenario may be easier - corner entry or exit, on throttle or off? ... but may still be driver input. If I had tuned for what felt "neutral" this spring, I'd be upset about balance today... only thing that has changed is the driver. C |
The Following User Says Thank You to cjd For This Useful Post: | why? (09-16-2015) |
09-16-2015, 01:08 PM | #14 | |
Quote:
- Andrew |
||
|
|
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
My quest | Rocket.BRZ | Off-Topic Lounge [WARNING: NO POLITICS] | 46 | 09-08-2014 07:23 PM |
Quest for the 86 | Calls44 | Member's Car Journals | 10 | 05-15-2014 06:09 PM |
Never ending quest for more | TylerLieberman | Off-Topic Lounge [WARNING: NO POLITICS] | 5 | 10-17-2013 04:52 PM |
My quest for a BRZ in China is over! | Godzpeed | Other Vehicles & General Automotive Discussions | 9 | 08-13-2012 05:17 AM |