Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community - FT86CLUB

Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community - FT86CLUB (https://www.ft86club.com/forums/index.php)
-   Tracking / Autocross / HPDE / Drifting (https://www.ft86club.com/forums/forumdisplay.php?f=39)
-   -   My BRZ ST* Autocross build (https://www.ft86club.com/forums/showthread.php?t=5413)

Scooby South 05-01-2012 12:15 AM

Quote:

Originally Posted by GrimmSpeed (Post 196534)
helmet is coming along very nicely!

Justin


Thanks..:)..... Hopefully the car comes in soon... so I can get it up to you guys..:)


Bill

bestwheelbase 05-01-2012 12:35 AM

Bill, Thanks for sharing your project!

I don't know about those door plates though. They sure look pretty, but performance enhancing? Do you really have high hopes for them? I'm already coming up with my excuse that I didn't get FTD because my door plate was loose. :D

Scooby South 05-01-2012 12:43 AM

based off the engineering hypothesis..I am hoping they stiffen the chassis a bit more so I don't have to run Strut bars..we'll see.. the review I read said he noticed a difference in turn-in...sooo anything is possible.. :).. makes sense.. as for FTD...I am chasing some pretty established folks here...Colin Fiedler, Jason Frank, Bertack... You get the picture..:)... just want the car so I can get some seat time...;)..


Bill... (BTW...love your t-shirt) :)

blu_ 05-01-2012 12:44 AM

I'm pretty sure ideal spring rates on an impreza chassis are going to be totally different than this chassis.

Scooby South 05-01-2012 12:55 AM

Quote:

Originally Posted by blu_ (Post 196582)
I'm pretty sure ideal spring rates on an impreza chassis are going to be totally different than this chassis.

agreed... thinking About going square with the rates...it will definitely need some testing...as does anything.... Luckily Vorshlag is getting a BRZ also and should help out alot with the starting rates..:)


Bill

blu_ 05-01-2012 12:57 AM

I'm going to definitely look at what they do as well. Should start to get interesting soon.

Scooby South 05-01-2012 01:08 AM

Quote:

Originally Posted by blu_ (Post 196590)
I'm going to definitely look at what they do as well. Should start to get interesting soon.

yep...or no swaybars?? depends on how much Droop we will have out of the rear end...that and with the OS GIKEN rear diff will change the characteristics/dynamics too..sooooo much to dooo :/ ....LOL....also don't think it will be eligible for Nats this year... Still no word on classing also..which is disappointing. Right now I am going completely off assumptions.....I am praying I am right..otherwise I have alot of investment...and no return..


Bill

EMguy 05-01-2012 10:41 AM

What will you be using for data acquisition?

Scooby South 05-01-2012 11:04 AM

Quote:

Originally Posted by EMguy (Post 196847)
What will you be using for data acquisition?

In the past, I used a MaxQData system with a track overlay from Track Vision... for now I will be using a nice phone ap called Race Ace...it should serve for my purposes...if it doesn't I will get the Trivinci Race Keeper. with multiple camera inputs. . we'll see

Bill

Racecomp Engineering 05-01-2012 11:26 AM

Helmet looks awesome!

This car is definitely going to be a little more difficult to tune suspension-wise than an Impreza. We've got a good start on things but still much more testing to come!

- Andrew

Scooby South 05-01-2012 11:46 AM

Quote:

Originally Posted by Racecomp Engineering (Post 196896)
Helmet looks awesome!

This car is definitely going to be a little more difficult to tune suspension-wise than an Impreza. We've got a good start on things but still much more testing to come!

- Andrew

Thanks Andrew...
What way are you guys thinking??? The Shock dyno plot showed Square rates also...sincce I haved yet to drive it..its hard for me to even try to guess...Thoughts??? :)

Bill

ichitaka05 05-01-2012 11:51 AM

Nice read...

iirc HKS ran 8/6 spring rates & 7/5 spring rates on simple modded GT86 at the Tsukuba

Scooby South 05-01-2012 12:14 PM

Quote:

Originally Posted by ichitaka05 (Post 196918)
Nice read...

iirc HKS ran 8/6 spring rates & 7/5 spring rates on simple modded GT86 at the Tsukuba

Good info.... will definitely keep that in mind....I most likely will end up with 3 or 4 sets of springs to figure it out...that and corner balance of course. :)

Bill

Racecomp Engineering 05-01-2012 01:13 PM

I do think square rates are a good starting point for most people. I'd shy away from softer in the rear, especially for auto-x. Might make some sense with an aggressive rear diff but I think it's a better idea to go with firmer rates in the rear (and then avoid using a too-large rear swaybar).

- Andrew


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