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09-10-2014, 07:06 AM | #1145 | |
n1smo
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Drives: E92 M3
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Location: Huntsville, AL
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Completely agree with your second paragraph. My philosophy is from some F1 driver, I want to say a Fin but pretty sure it wasn't Kimi maybe Mika? Anyway, the quickest way to find the limit is to exceed it. So, the track is the perfect environment to do exactly that. The worst that can happen is you go off and have a talking to on pit lane. The tracks here are no where as risky as the Green Hell, grow a pair and do it!! Just do it smartly. |
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09-10-2014, 11:32 AM | #1146 |
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Hey! I resemble that comment.
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BRP 1:56 | CVR 2:01 | ACS 1:53 | WSIR 1:34
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09-10-2014, 11:35 AM | #1147 | |
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and patiently. My lap times dropped around 8 seconds when I went DSC off. Took me around 10 months to get back to the previous pace, and exceed. Learned a lot about driving during that time (& still learning).
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09-10-2014, 04:06 PM | #1149 |
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I blame my asian roommate in college for getting me into the import and racing scene. It was because of him that I bought a 95 Toyota Supra after finishing college. Then the imports when from Japan to Germany.
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09-10-2014, 04:12 PM | #1150 | |
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@Jason ? Last edited by pkimM3r; 09-10-2014 at 04:31 PM.. |
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09-10-2014, 05:00 PM | #1151 |
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09-10-2014, 07:33 PM | #1154 |
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09-11-2014, 12:04 AM | #1156 |
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Cool, looks like the 991 Cup with the paddles. Man, the guy is constantly moving his hands but I think he has no choice or the car is going to spin on him. I can even think how scary fast the cup cars are to street driven GT3s.
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09-11-2014, 12:59 AM | #1157 |
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Yep, he's just reacting to what the car's doing.
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Last edited by OC3; 09-11-2014 at 01:16 AM.. |
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09-27-2014, 01:00 PM | #1158 |
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Drives: '09 E90 M3 - IB
Join Date: Feb 2012
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Went to Speed District's Buttonwillow 13CW day yesterday. It was a great day out there! Thanks Josh!! The weather is finally starting to mellow out.
I have two times to report--my standard Euro-MDM on, and now as I have begun practicing with DSC-off, I'm listing my DSC-off times as well when there's something interesting to report. It's worth noting that these two laps were run on different tire sets. I had fresh tires with Euro-MDM-on in the morning, and I switched to 4 day-old tires when running DSC-off at 4PM. Aside from continuing to be more comfortable with DSC-off, DSC-off times should continue to improve simply with better tires and running with it off earlier in the day. E90 M3--Euro-MDM on. Track/course: Buttonwillow 13CW Best Lap Time: 1:56.3 (transponder) (I ran three laps at 1:56) Brakes: AP Racing - Cobalt Friction XR2 front/XR3 rear Tires: Hankook TD - 295/30/18 square on Apex Arc-8 10.5" (fresh tires) Suspension: JRZ RS Pro Other mods: VF620, Akrapovic X-Pipe with stock exhaust, RD Sport front sway bar, (full interior and no aero parts) E90 M3--DSC-off Track/course: Buttonwillow 13CW Best Lap Time: 1:58.1 (transponder) (I ran four laps at 1:58---1:58.1. 1:58.2, 1:58.4, 1:58.6) Brakes: AP Racing - Cobalt Friction XR2 front/XR3 rear Tires: Hankook TD - 295/30/18 square on Apex Arc-8 10.5" (tires on 4th day) Suspension: JRZ RS Pro Other mods: VF620, Akrapovic X-Pipe with stock exhaust, RD Sport front sway bar, (full interior and no aero parts) Here's video of the 1:56 lap: |
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09-28-2014, 01:01 AM | #1159 |
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Nice run, you guys had great temps out there on Friday and that pavement looks smoooooooooth. I was thinking of going out there as well but had 3 day old NT01/RA1s so there wasn't enough life in there for a drive up and back along with the track time. I might do the global time attack in mid Nov as it's before the PCA SD weekend.
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09-28-2014, 08:04 AM | #1160 |
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Hey dogbone-
Did you find that the front bar helps keeps the rear settled w/ the square setup? Also, are you running less rear rebound? Thx Nice driving...
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09-28-2014, 09:14 AM | #1161 | |
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Drives: '09 E90 M3 - IB
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People ask me if the sway bar adds a lot of understeer. On my setup, I run Hankook TD soft compound in 295 square. And I run maximum allowable camber. And I have JRZ. I have a LOT of grip up front. In fact, I'd say I have grip to spare in some cases. If the sway bar is inducing some understeer, it's not unwelcome. I can say now having tracked at Big Willow and Buttonwillow twice, that I haven't induced any understeer that is objectionable----but again I had a TON of front grip to begin with. Honestly, I pursued this mod because of a conversation on this forum about tire edge wear. Billy Johnson said I should try a sway bar to help save the edges. So, I was really approaching the sway bar from a tire preservation standpoint versus a performance standpoint. Interestingly, the new pavement at Buttonwillow is WAYYYYYYY easier on tires than the old pavement. It's INCREDIBLE how much less wearing the new surface is on tires. In the past, Buttonwillow would destroy tires very quickly. Now we're seeing tires heat cycle out and seriously lose performance while still showing decent tread. But regardless of Buttonwillow's new pavement, I think the sway bar is helping some with tire edge wear. Big Willow is also very nasty on tires because Turn 2 and 8 are very high speed and long turns and they both go the same direction, so I've seen the front driver tire get SERIOUSLY abused there. Usually, I'll rotate tires after only two sessions there. Last week, I purposefully did not rotate my (not new) tires and ran the whole day. Normally, that would spell doom for a soft tire like a TD. While the front driver did show a fair amount of edge wear by the end of the day, it was by no means destroyed, and when I went to Buttonwillow on Friday, I used those tires to drive DSC-off and still ran 1:58. I just put that worn tire on the least used corner at Buttonwillow which is the passenger rear corner and it was fine. So, I think the sway bar IS helping with tire wear in the front. As far as the specific question of the rear being settled more with the sway bar-----I may not be the best person to ask. Since most of my running has been done with Euro-MDM on, the computer ensures that the tail of my car stays in the rear. However, I have driven a fair amount of DSC-off with the stock sway bar, and assed the car out many times. I ran 20+ laps on Friday DSC-off with the new sway bar, and I never had any oopsy moments with the ass coming out when I didn't want it. I did push it through Off-Ramp and purposefully rotated the car, but the tail of the car did feel planted (and I have a blower, so it's easy to power oversteer the car if you're not careful). Regarding my suspension settings, yes, I run lower rebound and compression in the rear-----compared to the front, on my JRZ, I run four clicks less rebound and two clicks less compression in the rear. There's another guy on the forum here who has a VERY similar setup to me----same suspension, same brakes, has a blower, he even has solid bushings which i don't have, but I do have 50lbs more springs on front and back. There was a guy at the track on Friday who rode passenger in both our cars that day. He said my car felt stiffer. And as it turns out, I was running softer suspension settings than the other car. I'm going to say the sway bar had something to do with that. My conclusion is that I'm happy with the RD Sport sway bar. I'm leaving it on and leaving it on the stiffest setting. The car is a little stiffer on the streets, especially on a rough road but thats ok. C'mon, we all do this BECAUSE RACE CAR!!!!!! |
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09-29-2014, 09:46 PM | #1163 | |
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Car: BMW X1 Best Time: 1:44.5 Brakes: PFC08 pads/motul fluid Tires: 255/40/17 direzza zii Other mods: JRZ suspension, fbo (no meth, stock exhaust) Last edited by Jon@NL; 09-29-2014 at 10:23 PM.. |
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09-30-2014, 12:41 PM | #1164 | |
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Shaved off almost 7 seconds. I did a few changes that contributed to this: BFG R1 tires instead of MPCs same size, ESS VT1-550 SC, removed front brake dust shields, replaced front stock rotors with PFC two piece rotors, replaced stock EDC susp. with Ohlins R&T coilovers.Thats it. It was about 20 degrees cooler compare to what it was in july last year. I think all these changes to the car and cooler conditions made the difference, but i think the biggest difference was changing my driving technique. Due to added power, i had to use 4th gear instead of 3rd in T1, bus stop, T6,8,11. Also, was upshifting to 5th gear before T2, to 6th gear right after exiting the esses. Top speed was 158 indicated right before the bus stop Braking technique: was braking much less before T1,6,and especially no braking at all(just lifting)before T10 and very light braking at T11. T1, 10 and 11 are most important corners for the fast lap times. And i always run with mdm mode at this track, because one small mistake =totaled car. Probably lose 2-3 seconds, but like someone said the other day, i am not a professional, and i am no superman I think with more seat time this car can brake 2.07 easily, and can brake 2.05 with TC off and some weight reduction. Edit: completely forgot about the major change to my car lol, coilovers. Fixed. Last edited by Groundpilot; 09-30-2014 at 02:13 PM.. |
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09-30-2014, 01:58 PM | #1165 | |
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10-06-2014, 03:04 PM | #1166 |
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'09 E90 M3 3712lbs DCT
Track/Course: VIR Full Best Lap Time: 2:10.0 (flat) Brake Pads: Pagid Yellows with PFC 2 piece rotors, Bimmerworld guide pins and SS lines, front backing plates removed. Tires (Size & Model): 275/18 RA1s on Enkei 18*10 et25 wheels Suspension: H&R front only bar, GC plates set at -2.5 front, -1.8 rear, Bilstein EDC shocks set at stiff, Eibach springs. Other Mods: Running traction off, Supersprint F1 exhaust. |
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