Houston SCCA Autocross

[JBINTX]

One fine day in Texas!!!

Jason in Texas - ext. track - 09 SS/TC

February 7 here in America. Cool morning in Texas, but still a good day for some autoX. We drew the short stick and had to run the first heat which meant cold tires. The track layout proved interesting. Unfortunately, I did not get very comfortable with the layout until about the fourth run...

dfkitcar.com

 

[Rttoys]

Had an awesome day today. They now allow passengers of any type (not just other drivers) to ride along. Bill and Cody switched between the Goblins, plus we got to take others around with us. New tires for me really helped out, but the wangs prevailed

Going to have to load pics at work Interwebbies is real slow

 

[ToxicBill]

DUDE!!! That was such a blast. Hopefully mine will be the forth member of the Goblin Parade.

 

[KLMOTORSPORTS]

Very awesome! I run with the Cincinnati SCCA Club and the only Goblin...neat you all have 3 there to run against! Good luck

 

[Rttoys]

Very awesome! I run with the Cincinnati SCCA Club and the only Goblin...neat you all have 3 there to run against! Good luck

It is pretty cool to have 3 of us there and looking forward to more. The announcer guy loves to say "the entire EM class is goblins" I'm sure we are an eye catcher. I know a lot of people like to come up and ask questions about them.

 

[Desert Sasqwatch]

It is pretty cool to have 3 of us there and looking forward to more. The announcer guy loves to say "the entire EM class is goblins" I'm sure we are an eye catcher. I know a lot of people like to come up and ask questions about them.

Free DF advertising! Adam you're a marketing genius!

 

[Rttoys]

Some pics

 

[JBINTX]

Same. But different. Hmmmmm

those Toyo tires are screaming!!....

 

[Lonny]

It looks like your rear outside tire is only planting the outside edge.

You may be able to give up a little straight line forward bite for more rear grip through turns and better drive-off by adding a couple of degrees of negative camber.

It may also be beneficial to add a degree of negative to the front too.

 

[Fozda]

You could also add a base model front sway bar to the rear. I added one to mine and it helped control the body roll immensely!

 

[SACTX]

It is pretty cool to have 3 of us there and looking forward to more. The announcer guy loves to say "the entire EM class is goblins" I'm sure we are an eye catcher. I know a lot of people like to come up and ask questions about them.

Yes, multiple times I heard "Everyone pay attention, Emod is approaching the starting line with a Parade of Goblins!"

It looks like your rear outside tire is only planting the outside edge.

You may be able to give up a little straight line forward bite for more rear grip through turns and better drive-off by adding a couple of degrees of negative camber.

It may also be beneficial to add a degree of negative to the front too.

It was an awesome and @Lonny, I think you are correct. I was looking at my tires and the outside shoulders are all scrubbed much more than anything else. The shoulders on the R888r's are rounded or slipped down and you can tell that I was going through the turns on them only. I'm going with some extra camber on the rear next time around and taking some off of the front. I was much more controllable this time around but still very tail happy.

 

[ccannx]

Yes, multiple times I heard "Everyone pay attention, Emod is approaching the starting line with a Parade of Goblins!"



It was an awesome and @Lonny, I think you are correct. I was looking at my tires and the outside shoulders are all scrubbed much more than anything else. The shoulders on the R888r's are rounded or slipped down and you can tell that I was going through the turns on them only. I'm going with some extra camber on the rear next time around and taking some off of the front. I was much more controllable this time around but still very tail happy.

Rasing the rear until the lower control arms are angled down and a little toe in on the front tires helped keep me from losing the rear. As soon as that lower control arm goes from parallel to the ground starting upwards you are losing camber.

 

[SACTX]

Rasing the rear until the lower control arms are angled down and a little toe in on the front tires helped keep me from losing the rear. As soon as that lower control arm goes from parallel to the ground starting upwards you are losing camber.

I raised my rear end 1 3/4" at the frame, ~8" to 9 3/4". I went from 1 degree upward on the tie rod to about 3 degrees down with 1/8" toe on the rear and .7% camber. Before, I would instantly loose the rear end if I applied ANY throttle while turning.

I've also been working on the ETC TPM/RPM/% MAX TORQUE table to bring the throttle input down to a point where it was more usable. Remember before I was saying that I was getting too much throttle at any amount of input. This is what my current table looks like. I still need to bring down the mid level throttle input and level it out a little. It's still pretty abrupt on the uptake.

Stock Table

This time I was able to modulate the throttle in the corners and control the rear end a lot better than before. I'm still very rear-end happy, but It's much more controllable.

 

[JBINTX]

View attachment 22729

It looks like your rear outside tire is only planting the outside edge.

You may be able to give up a little straight line forward bite for more rear grip through turns and better drive-off by adding a couple of degrees of negative camber.

It may also be beneficial to add a degree of negative to the front too.

I saw that too!
I appreciate the info from you and Fozda. I had been running 14 psi in the rear. Warmer weather, more aggressive driving, or another 200 lbs in rider may have rolled it a little further than in the past. I was inspecting the few scuffs on the side wall and confirmed the picture.
More psi is the easy change.
Will keep making other changes though!!

 

[JBINTX]

I raised my rear end 1 3/4" at the frame, ~8" to 9 3/4". I went from 1 degree upward on the tie rod to about 3 degrees down with 1/8" toe on the rear and .7% camber. Before, I would instantly loose the rear end if I applied ANY throttle while turning.

I've also been working on the ETC TPM/RPM/% MAX TORQUE table to bring the throttle input down to a point where it was more usable. Remember before I was saying that I was getting too much throttle at any amount of input. This is what my current table looks like. I still need to bring down the mid level throttle input and level it out a little. It's still pretty abrupt on the uptake.

View attachment 22748

Stock Table

View attachment 22750

This time I was able to modulate the throttle in the corners and control the rear end a lot better than before. I'm still very rear-end happy, but It's much more controllable.

he said rear end happy.... huh huh...
So dang true in a Goblin!!!

 

[KLMOTORSPORTS]

You could also add a base model front sway bar to the rear. I added one to mine and it helped control the body roll immensely!

I did the same....much better roll control

 

[Rttoys]

Finally got a YouTube video up. This was my fastest run of the day.

 

[JBINTX]

Finally got a YouTube video up. This was my fastest run of the day.

those tires made a BIG difference! I did not see you sliding at all!!!...

 

[Rttoys]

They really did stick well. I did start to skid on my last few runs, but it was controllable, like a drift. I think some of that was from whatever shifted in the rear though. Still need to check my rear alignment and see what moved.

 

[SACTX]

My fastest run. I had to edit it to splice in the end. I'll try to edit it to clear it up.