|
|
|
07-16-2018, 03:24 PM | #156 |
Private First Class
98
Rep 149
Posts |
Well that's all she wrote for the year.
Last Saturday was the Canadian Tire Motorsports Park GP School/Lapping day. I attended the lapping day to prep for Sunday's Time Attack. 30FF and ensuing limp mode would come within 2 turns of hard driving. Turbos are officially dead and I will not be attempting anymore bandaids. It's either replacement OEMs /w upgraded WG flappers or a small single turbo (GTX 3076/3576). On the latter, this is a stretch as it is a huge jump in costs that I really wouldn't take the benefit of since our time attack classing is based on points. More power means more points and higher classing... I can't just YOLO and turn up the boost without 'consequence'. And really, 370whp should net me an extremely fast lap time around Canadian Tire Motorsports Park GP assuming I have everything else optimized (tires, springs, dampers, weight reduction, aero and my driving). That being said, Saturday was the first time this year I was able to test the new widebody/tires/upgraded aero at CTMP GP. Some corners that still required me to brake (despite being down on power) showed significant improvements. Turn 2, for example, improved by 4 tenths (!!!) and turn 9/10 improved by 3 tenths. If the turbos didn't pack it in, I have absolutely no doubt a solid high 1:2X would've been achieved...this is Pirelli World Challenge M235iR territory. The caveat being the PWC M235iR does it with less aero and less power *cough* but more tire (slicks)... Plans for next year include the following: - Turbo replacement/upgrade - Proper clutch type LSD in the rear - Reinstall rear sway bar - AiM Dash... This is a 'stretch goal' if you will... Will post updates as they happen.
__________________
|
Appreciate
3
|
07-18-2018, 09:51 AM | #157 |
Captain
1397
Rep 777
Posts |
|
Appreciate
0
|
07-18-2018, 11:43 AM | #158 |
Private First Class
98
Rep 149
Posts |
No worries, James. I seeked you out for a chat before I left but figured you were out instructing.
__________________
Last edited by xBlueStreakx; 07-18-2018 at 01:07 PM.. |
Appreciate
0
|
08-14-2018, 10:31 AM | #159 |
Private First Class
98
Rep 149
Posts |
Further to the disappointing day at Mosport GP track, attached is the data of my best lap.
Summary: - Best lap last year was a 1:31.28. - Best lap this year was a 1:32.97. A difference of 1.69 seconds slower than last year due to the 30FF issue. - On the speed/distance graph, the white line is my best this year whereas the red line was my best last year. - I added the vertical red lines with numbers corresponding to the apex of the corner in question. - Exit speed/acceleration from all corners is markedly slower this year. - Top speed before turn 8 was 205km/h this year vs 225km/h last year. With the stage 1 tune, top speed should've been closer to 240km/h. You can see the car shaved a ton of time at turn 2, 9 and 10. This is due to the improved aero build and the wider tires. Unfortunately, I didn't put in enough laps to try and quantify what was attributable to aero vs. non-aero. A good indicator would've been turn 5 as it is a very slow corner... in the graph, it appears that minimum speed is the same as last year but it could've been due to a mistake for example. Lots of other tidbits of information there but I need to get back to work!
__________________
|
Appreciate
0
|
09-26-2018, 09:06 AM | #160 |
Private First Class
98
Rep 149
Posts |
Early September, I decided to take another shot at addressing the 30FF issue. This time by removing everything I needed to get at the front WGA.
Before I embarked on this repair, I decided to order the VRSF OEM location inlets. Furthermore, I've had catless downpipes sitting in my garage since the start of the build and figured they'd go in as well. What a royal PITA it was doing this job on jack stands... Getting at the front WGA required pulling the water pump (coolant shower, anyone?) in addition to downpipe removal, steering rack loosening etc. There was alot of swearing, here. Haha Following some guides online, I shimmed the WGA brackets such that at -5.9inHg of vacuum on the WGA, the flappers were fully closed. Reassembly involved swapping in the VRSF inlets and the catless downpipes. As an aside, installing the rear inlet with the downpipes out of the way makes tightening the inlet to the turbo snout (almost) a breeze. On Monday September 24th, I took the car to Toronto Motorsports Park (TMP) in Cayuga. Happy to report that we're back in business. The car pulled nice and strong and I managed to set a personal best of a 1:17.78. The data showed potential for a 16.x, however, I couldn't string together a clean lap in the one hot lap per session before the oil temps would send the car into limp mode. Onto the issues to address... If you go back a few months, I decided to improve aero by removing the ER dual oil cooler setup in favour of a single setup behind the kidney grill. On a small/short track like TMP, the dual oil cooler setup is necessary as temps get out of control after one hot lap (plus one warm up). This winter, I'll be reverting back to the dual oil cooler setup. For a bigger track like Mosport (where over cooling is an "issue"), I'll modify the bumper covers to let in a fraction of the air a fully open setup would otherwise provide. TL;DR. Car is back to being fast. Can get back to working on driver skill and setup. Done for the season, though.
__________________
|
11-19-2018, 02:50 PM | #161 |
Private First Class
98
Rep 149
Posts |
Time to (slowly) prep for next year.
First thing is first. Suspension! Up front, I run 6" Swift Springs (look at previous pages for rates) /w a Swift 60mm helper. Fully compressed, the helper adds 1.2" of ride height despite me bottoming out the spring collar to have the front sit as low as possible. At this height, the lower arms still show that I can lower the car an additional 3/4" without inverting arm angles. Enter Hyperco helper springs. Presumably, they only add 0.25" to ride height and will allow me to work with the collars for fine tuning. See picture below. Swift photo added as well. Black Friday is also around the corner. If SPL has a sale, I may pick up their full front end kit which should allow me to play with ride height even further and still maintain proper arm/tie rod angles.
__________________
|
Appreciate
0
|
11-20-2018, 09:16 AM | #162 |
Professional Hack
96
Rep 379
Posts |
If SPL has a black friday sale, nobody else in my family is getting any presents for Christmas.
|
Appreciate
1
xBlueStreakx97.50 |
11-26-2018, 05:30 PM | #163 |
First Lieutenant
219
Rep 361
Posts |
Out of curiosity - why run helpers at all in the front?
If your perch is as low as it can be and you have spacers that take up 1.25" of space when compressed, then you can just eliminate them and move the perch up 1.25" - no change in net ride height. No need for the cost, weight, or complexity of two springs. Just food for thought. -Mark
__________________
2011 BMW 128i - Check out my STX build thread!
|
Appreciate
0
|
11-27-2018, 09:27 AM | #164 | |
Colonel
1207
Rep 2,026
Posts |
Quote:
Last edited by bbnks2; 11-27-2018 at 09:38 AM.. |
|
Appreciate
0
|
11-27-2018, 02:10 PM | #165 |
Private First Class
98
Rep 149
Posts |
Unfortunately without the helper, the 6" main spring is not captured at full suspension droop. At full droop, the helper provides juuuussssttt enough tension to keep the main/helper seated.
__________________
|
Appreciate
0
|
11-30-2018, 11:54 PM | #166 | |
First Lieutenant
219
Rep 361
Posts |
Quote:
Also, you are not really using the terms rebound and compression correctly - rebound is not a type of travel, droop is; rebound is an adjustment that controls how droop travel behaves. Regardless, a shock does not care whether you have helpers or not, it behaves the same either way given the same range of motion. The only thing that affects the amount of bump to droop travel is ride height - whether it is accomplished by changing the main spring length, rate, adding or deleting a helper makes no difference. -Mark
__________________
2011 BMW 128i - Check out my STX build thread!
|
|
Appreciate
1
chris82827.00 |
11-30-2018, 11:59 PM | #167 | |
First Lieutenant
219
Rep 361
Posts |
Quote:
For reference, my Ohlins have under 6" of total stroke - ie a 6" spring without helper is slightly preloaded. I am going to measure the droop this weekend to figure out if my 5" springs can work or if they will require a helper. -Mark
__________________
2011 BMW 128i - Check out my STX build thread!
|
|
Appreciate
0
|
12-03-2018, 08:55 AM | #168 | |||
Colonel
1207
Rep 2,026
Posts |
Quote:
Quote:
I agree with you though that the helper spring is not intended to add to the effective spring rate but it does by a marginal amount depending on how stiff it is. Quote:
As stated above, the part you're missing is that lowering the lower spring perch also changes the bump/droop distribution. Dropping the lower spring perch results in less bump travel and more droop travel. It's called setting the spring for "sag" rather than "preload." The helper spring just takes up the sag to keep the spring seated. There are valid reasons for running sag. Last edited by bbnks2; 12-04-2018 at 12:22 PM.. |
|||
Appreciate
0
|
12-03-2018, 08:56 AM | #169 | |
Colonel
1207
Rep 2,026
Posts |
Quote:
"ie a 6" spring without helper is slightly preloaded. " Do Ohlins not have adjustable spring perches? If you don't move your spring perch up when moving to the 5" spring you will be changing your ride height and bump/droop distribution and your spring will more than likely not have sag. What exactly is your goal of running a 5" spring? Last edited by bbnks2; 12-03-2018 at 01:00 PM.. |
|
Appreciate
0
|
12-04-2018, 10:45 AM | #170 | ||
Boost
1354
Rep 3,692
Posts
Drives: 135i M-Sport
Join Date: Feb 2014
Location: Valley of Silicon, CA - United States
|
Quote:
Still on #600ish front springs? That seems like such a high spring rate for this chassis even with aero.
__________________
F80 M3 TrackBoi, Z4MC GarageBoi, 1M Clone StreetBoi
|
||
Appreciate
0
|
12-05-2018, 10:42 AM | #171 | |
Captain
187
Rep 670
Posts |
Anyway you could snap a pic of your belt routing?
Quote:
|
|
Appreciate
0
|
01-18-2019, 12:02 PM | #172 | |
Private First Class
98
Rep 149
Posts |
Sorry guys. Life got in the way... then I forgot my 1addicts password, tried logging in, got locked out then said 'screw it' for a while. Haha
Quote:
Could be my age (33 years old) and my kid playing a factor but I do recall this not being an issue a few years back. Long story short, I'll be forever slow. Hah. You could be right about the spring rate. A few pages back, I sorted out the suspension frequency of my setup and they appeared to be decent. Any thoughts on that? Unfortunately, I can't. I have since installed turbo inlets that block any material view of the belt routing. If I have to remove the inlets for whatever reason, I'll be sure to snap one for you.
__________________
|
|
Appreciate
0
|
01-18-2019, 12:16 PM | #173 |
Private First Class
98
Rep 149
Posts |
Some small developments in preparation for 2019. Namely:
- Ordered a carbon lip to make a smoother bumper to splitter transition. Was not a fan of my alumalite air dam design. Any bets on how many track days I'll get on it before I have an off and break this to pieces? I'm thinking around 3. - Upgraded my iracing setup from v1 to v2 (pictured below). V2 consists of a Playseat base, Thrustmaster TX servo base, Thrustmaster 599XX Evo wheel and Thrustmaster T3PA Pro pedals. Didn't go wild with the screen as I plan on using a VR setup in the future. V2 setup is a few days old so I'm still getting used to the pedals (mainly braking). Still have yet to turn a faster lap time than my v1 wheel/pedal setup as a result. Crazy, right!? V1 setup consisted of a 5 year old laptop /w graphics set at the bare minimum, Logitech GT wheel/pedal setup that I had for about 8 years, a custom made kitchen table and an Ikea chair.
__________________
|
Appreciate
0
|
01-22-2019, 07:47 AM | #174 |
Colonel
1207
Rep 2,026
Posts |
I just got a T500RS and TH8A for Christmas.
Sim racing is fun but it's just not the real thing. I've got GT Sport and I just started playing iRacing a bit on PC so that I can at least drive on local tracks like Lime Rock and Thompson. If only I could get a REAL Miata around lime rock in under 1min LOL |
Appreciate
0
|
11-18-2019, 03:05 PM | #175 | |
Supreme Galactic Commander (one galaxy over...)
669
Rep 1,777
Posts |
Quote:
Also don't understand the upright bracing question...don't the uprights bolt to the trunk so you can pull the pin and the trunk will open with the wing attached? TIA.
__________________
Best,
Andy '12 E82-PS2,Stoptechs,Clubsports+M3 bits,Accusump,Wagner DP+EVO III FMIC,ERCP,BMS Intake,Mason Strut Bar,Wedge Tune |
|
Appreciate
0
|
Post Reply |
Bookmarks |
|
|