Tubular Subframe Suspension setup

[Indy Lonnie]

For those with the new tubular subframe, what are you spring rates, alignment settings and damper settings?
I had a champion auto cross driver drive my car last weekend. He gave me a few suggestions and it actually lines up with Justin Reeds last posted setup.
FYI - he posted the best time of the day until the last run. He broke it himself with his own Tesla and a built C5 beat it by 2 tenths.

He suggested 0 front toe, 2*+ rear camber and maybe a spring rates change.

Here is the Justin Reed post: http://dfkitcar.com/forum/index.php?threads/justin-reed-racing-df-goblin.45/post-89401

 

[SmsDetroit]

Ill have to double check mine but i think im very close to his setting. Less camber in the rear. Was thinking of adding more

 

[Indy Lonnie]

Big thing is it looks like he swapped the front and rear springs. Make sense to me. The front suspension hardly moves while the rear really moves.

 

[duthehustle93]

I'm not running the tubular subframe, but I'm running 300# F/R with the following alignment settings:

Front camber: -1.8
Front toe: 1/32 in
Rear camber: -2.2
Rear toe: 3/32 in
Wheels/tires: 15x9 w/ 225/45 RC-1

Here's my pyrometer data, I need to gather more data and average it, but other than decreasing tire pressure 1-2 PSI, the data seems to say this is in the ballpark. Data says I could use a hair less camber, but I don't plan on decreasing camber as there's still a lot I'm leaving on the table since I'm currently learning how to drive the car, and I'll definitely "grow into" the extra camber as I get quicker. A couple notes, look at the temperature summary area for digestible info, and I currently have optimal temperature gradient set at 17*F.

 

[Indy Lonnie]

I was lucky to attend an autocross school yesterday. I got 10 runs in, 7 with an instructor. I learned so much and my times got better and better.

Just attended Novice SCCA Autocross school

What a fun time. Ran at Cummins test track in Columbus Indiana. I learned a lot and the Goblin was a hit. May have sold a couple of kits…. Set the best times for the day myself and also with 2 instructors driving. Take that for what it is - we were all novices. I did better all the other cars...

dfkitcar.com

My instructor drove my car again and again set the best time of the day. He was impressed on how better the car felt and how much more predictable it was.
I changed a lot on the car since winter. It’s working good!

Here is my latest setup:
Front Springs: 10HT225/475 variable rate (This change the car the most - great on street and track)
Front Damper settings: Full stiff race setup - 5 clicks street
Front Castor: 9.4*
Front Camber: -0.5*
Front Toe: 1/16” in
Front Tire: 205/50R15 RE-71RZ (air pressure:12 lbs)

Rear tubular engine cradle and tubular suspension:
Rear Springs: 10HT350 (9HTxxx would be better - the 10” barely fit with fenders)
Rear Damper settings: 16 out of 32.
Rear Camber: -2.0*
Rear Toe: 3/16” in
Rear Tire: 255/40R17 RE-71RZ (air pressure 15 lbs)

 

[Rttoys]

That’s close to my numbers. I’m a little less on rear camber, but not much.

 

[Indy Lonnie]

That’s close to my numbers. I’m a little less on rear camber, but not much.

You have been a mentor. Thanks for putting your numbers out there as a guideline.

 

[Rttoys]

You have been a mentor. Thanks for putting your numbers out there as a guideline.

Thanks. I appreciate that.