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   Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community - FT86CLUB > Technical Topics > Suspension | Chassis | Brakes -- Sponsored by 949 Racing

Suspension | Chassis | Brakes -- Sponsored by 949 Racing Relating to suspension, chassis, and brakes. Sponsored by 949 Racing.


User Tag List

Reply
 
Thread Tools Search this Thread
Old 04-04-2013, 10:38 PM   #1
stoneman155
Member
 
stoneman155's Avatar
 
Join Date: Aug 2012
Drives: 2013 Scion FR-S, Whiteout
Location: Park City, UT
Posts: 55
Thanks: 37
Thanked 37 Times in 12 Posts
Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Fortune Auto 500 Coilover Review

Alright guys, I've got a lot to say but I'm going to do my best to condense this into a reasonable/readable length.

First, I want to explain what my goal was with coilovers. I wanted to retain the "liveliness" of the stock car. Positive front end with a free rear end, still controllable, however with height adjustment and more high speed stability.

I'm currently running
275lb/in or 4.9kg/mm in the front
and 350lb/in or 6.25kg/mm in the rear.

The reasoning behind those rates are based off of the Eibach Pro-Street coilovers. Eibach spent a lot of time developing their suspension models side by side with the stock car. That gave me confidence that the Pro-Street spring rates would be a great starting point for my goals of retaining the stock balance of the car. @FT-86 SpeedFactory was awesome in helping me find out that information. Prompt email responses and more than knowledgeable about the products.

To break it down, the stock suspension spring rates are:
Front = 131 lbs/in or 2.3kg/mm
Rear = 211 lbs/in or 3.7kg/mm

and the motion ratios for front and rear are:
Front = 0.92
Rear = 0.77

So stock rates in correspondance with motion ratio are as follows:
110.8lbs/in or 1.97kg/mm
125lbs/in or 2.23kg/mm
with a Front/Rear ratio of 0.88

Now when we compare that with the rates I am running it looks like this:

Fortune Auto rates in correspondance with motion ratio:
232.7lbs/in or 4.1kg/mm
207.5lbs/in or 3.7kg/mm
with a Front/Rear ratio of 1.12

Essentially meaning the front spring rates have stiffened up, which makes a lot of sense based on the fact that our cars are front engine. This makes the car much more positive on initial turn in and through the center of the corner but we'll get more into that later.

Let's take a look at the coilovers!

Name:  1.jpg
Views: 15013
Size:  122.7 KB

Front:
Name:  2.jpg
Views: 11254
Size:  78.4 KB

Front Top Hat:
Name:  3.jpg
Views: 11360
Size:  102.2 KB

Front Bearings: (These work awesome, I know that because I don't hear them!)
Name:  4.jpg
Views: 11308
Size:  105.3 KB

Rear:
Name:  5.jpg
Views: 11219
Size:  62.8 KB

Rear Top Hat:
Name:  6.jpg
Views: 11242
Size:  78.4 KB

Front Installed: I'm running the car much lower (Less Thread) than shown here.
Name:  7.jpg
Views: 11225
Size:  177.1 KB
Name:  8.jpg
Views: 11197
Size:  158.8 KB
Name:  9.jpg
Views: 12039
Size:  119.4 KB

Rear Installed:
Name:  10.jpg
Views: 11994
Size:  126.9 KB
Name:  11.jpg
Views: 11161
Size:  64.3 KB

On the ground:
Name:  12.jpg
Views: 13345
Size:  125.9 KB

To the important bits, how it drives!

At first, I drove the car and had a bit of understeer through the center of the corner as I was continually applying throttle, this is normal, but I'm looking for the rear end to be free!

So here's the setup I'm currently running and continuing to refine:
Front thread length 2inches 12 clicks of rebound (From full soft)
Rear thread length 1 1/8inches full soft on the rebound.

I originally ran the car with 2 in of thread length at full soft up front and 1 inch of thread length and full soft in the rear.

But in an attempt to free the rear end of the car up, I needed to dial the front in a bit. I've been from full soft to 20 clicks of rebound. 20 overstressed the stock tires, so it was time to back it down. After going back and forth, I decided 12 clicks felt best for me. This is also completely baring the fact that I drive differently then all of you, on different roads at different speeds. So what works for me, may not be what you run.

The rebound got me close, but I needed to shift some weight forwards to stick those front tires down. Raising the rear thread length by another 1/8in did the trick. Lucky first try. Although I will be trying different settings this weekend at the track.

This is also all based on running the stock recommended alignment specs, which are as follows:

Front:

Camber: 0 +/- 45' (0 +/- 0.75) (Right/Left Difference: 045' (0.75) or less)
Caster (Reference): 554' (5.90)
Steering Axis Inclination (Reference): 1531' (15.52)
Toe (Each Wheel): 000' +/- 011' (0.00 +/- 0.19)
Toe (Total): 0 +/- 3.0 mm (0 +/- 0.1181 in.)

Rear:

Camber: -112' +/- 45' (-1.20 +/- 0.75) (Right/Left Difference: 45' (0.75) or less)
Toe (Each Wheel): C + D: 010' +/- 015' (0.16 +/- 0.24)
Toe (Total): 2.0 +/- 3.0 mm(0.0787 +/- 0.1181 in.)

As the car is setup right now (With my driving style) the car is super positive on initial turn in, (and if driven correctly), the car drives down to the center of the corner and as you start to reapply throttle, the front end tracks true and the rear end is planted. This time, more planted than stock as well as easier to maneuver through the corner if you find yourself making adjustments. Basically, like stock, but more grip and more confidence. The coilovers are simply using the stock tire more efficiently.

However, if you want to get it loose, a simple exaggerated turn in, excessive weight transfer and a stab of the throttle and it goes into a controlled slide as beautifully as it did the day it came from the factory! Thats the fun stuff!

Daily driving, the car is softer and smoother over bumps when rebound is set at full soft, and feels almost identical to the stock car with the front rebound up 12 clicks.

The guys at @FT-86 SpeedFactory helped me through this process and it made life so much easier. Can't thank them enough for their help. Incredible customer service and great knowledge. Not much more you could ask for! They are a vendor for the coilovers, you can check them out at www.ft86speedfactory.com

I'll post updates as I continue to refine the suspension. But for now, time for a drive!

Last edited by stoneman155; 04-08-2013 at 07:21 PM. Reason: Correcting calculations
stoneman155 is offline   Reply With Quote
The Following 10 Users Say Thank You to stoneman155 For This Useful Post:
autobrz (08-06-2013), diss7 (08-25-2013), Draco_PR23 (04-08-2013), FT-86 SpeedFactory (04-05-2013), gkubed (05-12-2016), gled21 (09-19-2016), go_a_way1 (11-25-2015), mou (04-22-2013), Spartan65 (04-16-2013), why? (10-31-2018)
Old 04-08-2013, 09:30 AM   #2
FT-86 SpeedFactory
 
FT-86 SpeedFactory's Avatar
 
Join Date: Jul 2012
Drives: 2013 Scion FR-S
Location: Des Moines, IA
Posts: 7,694
Thanks: 1,298
Thanked 3,578 Times in 1,253 Posts
Mentioned: 341 Post(s)
Tagged: 5 Thread(s)
Very nice! We love our set here as well.
FT-86 SpeedFactory is offline   Reply With Quote
The Following User Says Thank You to FT-86 SpeedFactory For This Useful Post:
Draco_PR23 (04-08-2013)
Old 04-08-2013, 09:51 AM   #3
Draco_PR23
Fiebru
 
Draco_PR23's Avatar
 
Join Date: Aug 2012
Drives: Scion FR-S and Integra Type R
Location: West, Puerto Rico
Posts: 477
Thanks: 1,386
Thanked 284 Times in 208 Posts
Mentioned: 15 Post(s)
Tagged: 0 Thread(s)
Garage
Nice, I had the same initial impression of these!!
I got the Fortune Auto 500 Coilover with Swift upgrade from FT-86 speedFactory as well and I love it!
__________________
Current Cars:
2017 White Platinum Ford Fiesta ST
2013 Raven Scion FR-S
2012 Spruce Mica Toyota Tacoma TRD Off-Road
2000 Phoenix Yellow Acura Integra Type R
Draco_PR23 is offline   Reply With Quote
The Following User Says Thank You to Draco_PR23 For This Useful Post:
FT-86 SpeedFactory (04-08-2013)
Old 04-08-2013, 10:11 AM   #4
Racecomp Engineering
 
Join Date: Nov 2011
Drives: 2016 BRZ, 2012 Paris Di2 & 2018 STI
Location: Severn, MD
Posts: 5,416
Thanks: 3,439
Thanked 7,280 Times in 2,968 Posts
Mentioned: 304 Post(s)
Tagged: 9 Thread(s)
Send a message via AIM to Racecomp Engineering
wheel rate = spring rate x motion ratio^2

You have to square the motion ratio to get the wheel rates.

Also, raising the rear does not put any more static weight on the front tires. It's still essentially the same weight distribution. You are changing the roll-axis (in simplified terms). It sounds like you got the car behaving the way you want it to though, so good job!

- Andy
Racecomp Engineering is offline   Reply With Quote
The Following 6 Users Say Thank You to Racecomp Engineering For This Useful Post:
autobrz (08-06-2013), finch1750 (01-15-2020), Plumbus (08-23-2020), solidONE (11-09-2013), stoneman155 (04-08-2013), Tristor (10-24-2018)
Old 04-08-2013, 02:33 PM   #5
stoneman155
Member
 
stoneman155's Avatar
 
Join Date: Aug 2012
Drives: 2013 Scion FR-S, Whiteout
Location: Park City, UT
Posts: 55
Thanks: 37
Thanked 37 Times in 12 Posts
Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
I changed the ride height to change the weight balance/transfer under load. I haven't gone as far to corner balance the car to change static balance. But thank you for the correction on my math, I spaced squaring the motion ratio, probably from writing it in a hurry.

Update: *Motion Ratio calculations corrected.

Last edited by stoneman155; 04-08-2013 at 07:21 PM.
stoneman155 is offline   Reply With Quote
Old 05-20-2013, 10:33 PM   #6
normanb21
Senior Member
 
Join Date: Sep 2012
Drives: black frs
Location: dearborn mi
Posts: 101
Thanks: 0
Thanked 6 Times in 6 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
I'm thinking of purchasing these coilovers. I'm wondering if any clunking has arrived. Did you go with the 7k/7k rate?
normanb21 is offline   Reply With Quote
Old 05-21-2013, 01:28 AM   #7
Xauterus
Senior Member
 
Join Date: Jun 2012
Drives: GTS 86 Galaxy Blue
Location: Brisbane Australia
Posts: 212
Thanks: 8
Thanked 35 Times in 26 Posts
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
I'm currently running
275lb/in or 4.9kg/mm in the front
and 350lb/in or 6.25kg/mm in the rear.

Was near the start of his thread.
Xauterus is offline   Reply With Quote
Old 11-07-2013, 05:10 PM   #8
smbstyle
Senior Member
 
smbstyle's Avatar
 
Join Date: Apr 2013
Drives: 2013 SWP BRZ
Location: Forsyth, GA
Posts: 1,008
Thanks: 224
Thanked 681 Times in 302 Posts
Mentioned: 26 Post(s)
Tagged: 0 Thread(s)
After getting some time on track with these, how are they holding up?

Also, did you go with the swift spring upgrade option?

Last edited by smbstyle; 11-08-2013 at 11:20 AM.
smbstyle is offline   Reply With Quote
Old 11-13-2013, 01:24 PM   #9
thebear21
Senior Member
 
thebear21's Avatar
 
Join Date: Jul 2012
Drives: scion fr-s (RIP)
Location: Jacksonville, FL
Posts: 209
Thanks: 102
Thanked 46 Times in 31 Posts
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
im torn between these and the rce tarmac zeros... decisions decisions
thebear21 is offline   Reply With Quote
Old 11-13-2013, 01:29 PM   #10
Diode Dynamics
 
Diode Dynamics's Avatar
 
Join Date: Aug 2012
Drives: 2013 Scion FR-S
Location: St. Louis, Missouri
Posts: 2,770
Thanks: 1,503
Thanked 1,761 Times in 877 Posts
Mentioned: 197 Post(s)
Tagged: 5 Thread(s)
Send a PM to FT-86 SpeedFactory

They will give you all the information you need to make an informed decision

Nick C.
__________________
John C.
Diode Dynamics
Follow Us: FB // IG // YT // TikTok
Diode Dynamics is offline   Reply With Quote
The Following User Says Thank You to Diode Dynamics For This Useful Post:
FT-86 SpeedFactory (11-13-2013)
Old 10-24-2018, 04:32 PM   #11
x808drifter
LMGTFY
 
x808drifter's Avatar
 
Join Date: Mar 2016
Drives: 13 FRS, 91 Miata
Location: Lava Town, HI
Posts: 2,776
Thanks: 5,561
Thanked 3,646 Times in 1,625 Posts
Mentioned: 15 Post(s)
Tagged: 0 Thread(s)
As long as the endlinks front and rear are adjusted correctly, whichever ones have more threaded into the body would be the ones I'd use.
x808drifter is offline   Reply With Quote
The Following User Says Thank You to x808drifter For This Useful Post:
Leonardo (10-24-2018)
Old 10-30-2018, 08:31 PM   #12
Leonardo
Country Boy 4 Life
 
Leonardo's Avatar
 
Join Date: Jul 2012
Drives: 19' & 06' Ridgelines, 13' FR-S
Location: EUGENE
Posts: 5,228
Thanks: 6,719
Thanked 5,292 Times in 2,720 Posts
Mentioned: 47 Post(s)
Tagged: 1 Thread(s)
Roller bearings installed...

[surl=https://imgflip.com/i/2lcuah][/url]via Imgflip Meme Generator
__________________
<img src=https://www.ft86club.com/forums/picture.php?albumid=2239&pictureid=11508 border=0 alt= />


I LIKE TIRES!
Leonardo is offline   Reply With Quote
Old 01-15-2020, 08:32 AM   #13
Flex Luger
Junior Member
 
Join Date: Jan 2020
Drives: Red 86
Location: CA
Posts: 5
Thanks: 0
Thanked 2 Times in 1 Post
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Thanks for the thorough explanation comparison between the stock spring rates vs Fortune 500 spring rates. It helped me determine which spring rates i want now. Cheers!
Flex Luger is offline   Reply With Quote
Old 01-16-2020, 05:22 AM   #14
Contender
Senior Member
 
Join Date: Nov 2018
Drives: 2017 Toyota 86
Location: Washougal
Posts: 130
Thanks: 6
Thanked 51 Times in 29 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
So, you had to buy the roller bearings? My Apexi ExVs came with them...but, I am sure your 500s are far better since they were $500 bucks more. I have yet to put my coilovers on...so I can't say how they are.
Contender is offline   Reply With Quote
 
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
Coilover Review: FEAL SUSPENSION 441 coilover kit mr. slim Suspension | Chassis | Brakes -- Sponsored by 949 Racing 39 11-28-2019 06:30 AM
Fortune Auto - SpeedFactory Review - Video / Pics - Tracked / Autoxed / Drifted FT-86 SpeedFactory Suspension | Chassis | Brakes -- Sponsored by 949 Racing 47 01-29-2015 09:15 PM
Fr-s on Fortune Auto 500s Propaganda Suspension | Chassis | Brakes -- Sponsored by 949 Racing 23 02-10-2014 07:33 PM
Fortune Auto FRS/BRZ coilover kits - Tried and tested personally FreedE Brakes, Suspension, Chassis 15 10-24-2012 11:58 AM
Fortune Auto 500/cusco lca yomny Suspension | Chassis | Brakes -- Sponsored by 949 Racing 7 09-09-2012 12:14 PM


All times are GMT -4. The time now is 11:04 PM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
User Alert System provided by Advanced User Tagging v3.3.0 (Lite) - vBulletin Mods & Addons Copyright © 2024 DragonByte Technologies Ltd.

Garage vBulletin Plugins by Drive Thru Online, Inc.