SGwick

Sounds like you had a blast!! Happy for you man :-) worried you got that rear tail happy braking though, do you have rear relocation brackets?

redonblackpony

Congratulations on your first outing. Sounds like you got a lot a seat time.
If I remember correctly you have a stiff front sway bar. Do you have a matching rear sway bar as well. If your car has too much front sway bar it will lose grip over bumps and straight line breaking. And it will be more apt to push during cornering (understeer).

5.M0NSTER

Hey guys, thanks for the feedback.

Sgwick, no relo brackets. I'm hoping not to have to go that route.

Redonblack, you are correct. I only have the front sway bar. Stock rear.

What I experienced yesterday were 2 things:
1) General lack of bite and brake torque. I had to push the pedal a lot harder than I remember to get into ABS and get close to 0.9g decel.

I'm running G-Lock R10s up front. They are supposed to be same compound as Carbotech XP10 (Carbotech fractured and G-Lock is a splinter of CT Brakes). R10s did not feel nearly as grippy or torquy as XP10s did. I'll try re-bedding them and give them one more track day.

2) Instability of rear of the car under heavy high speed straight line braking. Not major or super disruptive, but straight line braking should be drama free in cars with ABS and electronic brake force distribution.

On the rear axle I wapped to CT AX6 compound because my XP8s were more than 50% gone. This was a mistake. My first season I ran XP10 up front with stock rears (and stock suspension). I had similar rear end instability and lack of brake confidence i experienced yesterday, but back then the car actually stopped better!

There were no issues at all in cornering and even in trail braking.

So here is my game plan. I have 8 days before Mid-Ohio! I need better braking on that track. I'm going to put the XP8 back, re-bed the pads and do a comparison of performance.

5.M0NSTER

few more pics

ford20

I was going to say the same thing.

Also, this should help a bit with braking.

https://www.blowfishracing.com/brake...der-brace.html

mustang5o

If you don't get what you like from the G-Lock pads give Wendy a call at racebrakes.com and look into Raybestos. The ST45/43 setup I'm running seems pretty darn good. You can move up a level to the ST47/45's if you want to get a little more aggressive though I'm betting Wendy would recommend otherwise. Also, the pricing on Raybestos is based on the pad design and doesn't increase based on how aggressive the compound is.

dmichaels

Red mustang has more track stickers than me!

Guess I need to book some new venues! Haha

ford20

Track #2 looks interesting!

5.M0NSTER

I know, right? I saw that and my jaw dropped, that's why I took the pic.

No kidding! That's a lot of twisties!

So all my videos are junk. All of them. You can see outside for 30s out of 20min of video each.

The 911 GT3 I faught hard to get a point by from sounds great, but you can't see it

My only hope is that my dad took something better. He was my pit crew and photographer. He rode for one sessions and hand filmed a few laps. I have to see what his footage looks like.

mustang5o

I need a pit crew!

SplitSecond

I volunteer!
I wish I had the disposable income to be able to afford a more track dedicated setup. I'll have to stick with staying a slick street machine and an occasional auto cross outing for me.

5.M0NSTER

So check this out. I was looking through my data to try to quantify how much difference the new suspension setup made over last year on the same exact tires on the same track (for apples to apples comparison), and last year the max lateral G force I was able to pull was 1.12g.

Here is this year. Not bad at all.

Bert

I see you are using Track Addict too. Do you believe those G numbers? I have seen some crazy numbers so it made me wonder.

Also the GPS track shows me going off the track quite a bit. I have only done that once, I swear! Do you get good GPS tracks from it?

I do believe it gives good lap times, since the start/finish line should be fairly repeatable. I have some pretty good video from it also . . . gotta get some posted up on youtube so I can link here.

Here's one I posted on SCCA Track Night in America page, let's see if this works:

http://www.tracknightinamerica.com/videos/2027654

5.M0NSTER

Hey Bert, for peak numbers, yes, I believe it. I work in the auto industry on vehicle dynamics software and our instrumentation will spit out similar peak numbers. The thing to remember is that it's a peak. It could last as short as 20ms.

Of course we then gradient limit, kalman filter and average the **** out of it for use of the vehicle dynamics controllers. If anything there may be a few % gain error, but not an offset. As you can see in a straight line it gave me 0.0g. Gain of a few % is likely due to mount deflection for example. But at least my comparison is all apples to apples. The only difference is literally the suspension. Mount, mounting location, phone, tires all the same.

I wish Track Addict would give you max sustained G for 750ms or so. That would be cool!

I also think the the start finish line is pretty solid. At a high speed track 5m accuracy is good to 1/20s.

That looked like fun! You line was awesome until that GT350 blew by. Then all caution and expertise goes out the window trying to catch it. Been there too many times

PJRManagement

Bert, fun video, brave driving in those conditions.

dmichaels

Nice! Data speaks volumes. Nicely done! Gonna need dry sump soon

5.M0NSTER

Ha! If I ever get R comps than yes. But for now it's good to see improvement while having these still on the car.

Next season I want to try this again with RE71Rs.

SGwick

Got it delivered today when I got home, had it installed with Steeda tune after dinner :-) I'm not gonna lie it's a beautiful thing :-))

5.M0NSTER

Niiice bro! I can't wait to hear your feedback. I've been wanting a CAI and tune. So stoked for you!

SGwick

thx 5.Monster, got home and decided to just put it together nothing more but you know how that goes :-)