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Front springs seem quite high from everything I've seen; like starting points for non-Hoosier guide on the site is 800/500, or 1000/500 for Hoosiers. And seems consistent with the complaints about front end grip.
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Mar 15, 2021 19:32
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I don't know how aero changes rake requirements, but rule of thumb has been 1/4" higher in the rear for NAs and NBs.
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Mar 15, 2021 19:32
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mekilljoydammit posted:Front springs seem quite high from everything I've seen; like starting points for non-Hoosier guide on the site is 800/500, or 1000/500 for Hoosiers. And seems consistent with the complaints about front end grip. That is what I was thinking too, but Emilio didn't bat an eye when I asked about the setup on the car since it used to run with his S1 group. He just said I was driving the car wrong, which is probably at least partially true. Phone posted:I don't know how aero changes rake requirements, but rule of thumb has been 1/4" higher in the rear for NAs and NBs. I don't either, but I'll give it a shot. So it sounds like I should drop front springs to the 1000lb ones I have for now, wind the rear up about half an inch, then reevaluate at the next event? Maybe I need to go a lot softer like killjoy is saying. BlackMK4 fucked around with this message at 19:42 on Mar 15, 2021 |
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Mar 15, 2021 19:37
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I mean it's a thing to try? I've never had to try to work with pre-NC ABS so it sounds like a lot of stuff has that as the root cause but well, it'll be a pain in the dick to put dual masters in, probably.
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Mar 15, 2021 19:45
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I kind of just want to put MK60 ABS into it since its legal for TT4. I have a switch to disable the NB2 ABS, the pedal feels better with it off but it was difficult to feel lockup and tires are expensive.
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Mar 15, 2021 19:47
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BlackMK4 posted:~2400lb I'm on the too much rear grip / too stiff front train. Try softer front springs, raise the rear / lower the front so you're at 1/4" rake, and the 4" splitter - I don't think you have the aero / tire load to need 1200lb front springs. Some combination of this will probably fix what you're describing. What are your camber numbers? My setup is as follows: 800/500 springs on xida race Front bar - Tubular front 1.125" - .188 wall #54103 on full stiff I think, I'd have to check Rear bar - supermiata on full soft -3.2F / -2.8R 4" / 4.25" F/R ride height 245 RS4's on a 9" Wheel No aero. What settings are your shocks at? The xidas have a hugely noticeable difference across the range. My first autocross with them I had everything set up as above, set the f/r shocks to 10 clicks from soft for both, and promptly couldn't keep the rear end under control. Worked up to 12 from soft in the front, and down to 8 from soft in the rear, and it was a completely different experience.
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Mar 15, 2021 20:07
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BlackMK4 posted:I kind of just want to put MK60 ABS into it since its legal for TT4. I have a switch to disable the NB2 ABS, the pedal feels better with it off but it was difficult to feel lockup and tires are expensive. RX-8 non-DSC ABS is probably going to be cheaper and good if you can find one - F1Y1-43-7A0. Was used in the World Challenge NC - no ice mode.
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Mar 15, 2021 20:19
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mekilljoydammit posted:RX-8 non-DSC ABS is probably going to be cheaper and good if you can find one - F1Y1-43-7A0. Was used in the World Challenge NC - no ice mode. Unfortunately, MK60 is the only non-original ABS allowed in TT4 because NASA. TrueChaos posted:I'm on the too much rear grip / too stiff front train. Try softer front springs, raise the rear / lower the front so you're at 1/4" rake, and the 4" splitter - I don't think you have the aero / tire load to need 1200lb front springs. Some combination of this will probably fix what you're describing. What are your camber numbers? My setup is as follows: I need to get the thing aligned again before posting definitive alignment numbers. They are like yours, 10/10. I've mostly left them alone other than trying softer in the front yesterday, it is something I need to play with at an open Chuckwalla event to get anything meaningful out of it. You can't get on / off track with NASA TT, so no setup playing.
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Mar 15, 2021 20:31
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BlackMK4 posted:Unfortunately, MK60 is the only non-original ABS allowed in TT4 because NASA. I'd laugh but I'm the one sitting here designing a tube chassis car around 15x7 wheels for SCCA.
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Mar 15, 2021 20:39
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Can you setup gear dependant boost with your ecu / the rules? Having it limit power in the lower gears could make them more useful. Could also disconnect the front sway bar to try softer front life without the spring swap/alignment.
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Mar 15, 2021 22:56
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honda whisperer posted:Can you setup gear dependant boost with your ecu / the rules? Having it limit power in the lower gears could make them more useful. I can, the bar idea is one I should have thought of at the track to test. Damnit. mekilljoydammit posted:I'd laugh but I'm the one sitting here designing a tube chassis car around 15x7 wheels for SCCA. Isn't it great????
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Mar 15, 2021 23:00
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BlackMK4 posted:Isn't it great???? Devil you know maybe; I never did like the power to weight classing idea but it's easy to say that when NASA isn't really active around here anyway.
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Mar 15, 2021 23:45
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PTW certainly is open to exploitation, my car is an example of it. I'm going to go browse through SCCA classing out of curiosity, we don't have any of their events locally so I've never thought about it.
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Mar 16, 2021 00:04
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BlackMK4 posted:PTW certainly is open to exploitation, my car is an example of it. I'm going to go browse through SCCA classing out of curiosity, we don't have any of their events locally so I've never thought about it. For wheel to wheel, turbo Miata is going to be STU or T1 basically - STU is reasonable but probably will take restrictions you won't see in NASA, and T1 is a "here be monsters" class where one guy argued for SCCA to make a legal place to run his car and SCCA shrugged and said "sure"; other class stalwarts are things like 458 Challenge, GT3 Cup, etc etc cars. SCCA rules are always written with the idea of "these are balanced to try to make it so that a crazy person cannot buy a national championships win"; like there's a lot of stuff where it'd probably be fine to reasonable people but over and over unreasonable people have shown up. There's a lot of establishment bias against turbos because, barring restrictors, there's no way for a volunteer tech group to police power levels that a clever person can't get around. I grew up going to SCCA events so the history of how some of the classes got like they got makes a bit more sense, but it's pretty loving esoteric starting from scratch.
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Mar 16, 2021 00:28
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BlackMK4 posted:PTW certainly is open to exploitation, my car is an example of it. I'm going to go browse through SCCA classing out of curiosity, we don't have any of their events locally so I've never thought about it. Bring it out to the scca solo and teach me how to be fast
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Mar 16, 2021 00:37
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BlackMK4 posted:I can, the bar idea is one I should have thought of at the track to test. Damnit. AI is weird because I felt weird posting that but also sometimes look for the wrench in my hand. Glad I did. Also don't knock the 15x7s, tube frame or no. Cheap tire life forever.
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Mar 16, 2021 02:40
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BlackMK4 posted:Emilio ended up something like 1400lb / 600lb and he is a way better driver than I am or ever will be The thing that stuck in my head, because he kept repeating it over and over again, was that he had no particular special talent as a driver. That everything he'd achieved, anyone could do, because he wasn't a genius who could invent new things. For him, it was a matter of learning to play the same notes over and over, consistently and accurately The first practical thing he taught me (other than to sit bolt upright and way closer to the wheel than I'd been doing my whole life) was not to jump out and start loving with tire pressures the minute I got off the track. Instead, I was supposed to spend 15 minutes replaying the session in my head, while the memories were fresh. And to do the same before going on track: visualize every corner entry, every landmark, every apex, over and over. If I could keep up this practice session after session, week after week, for years and years, I had a shot at being competitive, as could anyone else It remains one of the kindest, humblest things I've ever heard, with applications far beyond the track Thanks for indulging my reminisces; I'm going to go listen to dubstep to feel like less of an old person
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Mar 16, 2021 04:29
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honda whisperer posted:
Not when they're weird 10" wide hoosier cantilever slicks! OK still only a bit over $300 per tire, not too bad.
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Mar 16, 2021 04:57
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mekilljoydammit posted:For wheel to wheel, turbo Miata is going to be STU or T1 basically - STU is reasonable but probably will take restrictions you won't see in NASA, and T1 is a "here be monsters" class where one guy argued for SCCA to make a legal place to run his car and SCCA shrugged and said "sure"; other class stalwarts are things like 458 Challenge, GT3 Cup, etc etc cars. The turbo power stuff is super nebulous to me with all of the other corrections you can set up in the ECU, so a restrictor makes sense to me. Classing does not look great for me over there  honda whisperer posted:AI is weird because I felt weird posting that but also sometimes look for the wrench in my hand. Glad I did. Virgil Vox posted:Bring it out to the scca solo and teach me how to be fast Cones scare me, do you run the events that they do at AMP and Marina or whatever? got off on a technicality posted:So I know jack poo poo about Miatas, but Emilio was my instructor at my first ever DE at Streets of Willow 10+ years back. I only realized in hindsight how remarkable that was I need to line up an event that he is at this year, I want to meet him. mekilljoydammit posted:Not when they're weird 10" wide hoosier cantilever slicks! I hear your wallet crying from here
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Mar 16, 2021 18:51
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BlackMK4 posted:Cones scare me, do you run the events that they do at AMP and Marina or whatever? yeah, I like AMP cause I'm starting to get competitive with some of the drivers there, Tucson solo is at musselman honda circuit now, the surface is pretty slick but the locals are fast.
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Mar 16, 2021 22:41
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mekilljoydammit posted:Not when they're weird 10" wide hoosier cantilever slicks! Oh yeah I'd forgotten about those. Also you're 100% on the turbo stuff letting anyone who wants to cheat. Got an electronic boost controller, ecu, and a data logger that can do if/then outputs? If gps speed over 20 mph then 12v out. Set the ecu to see that 12v in switches to boost map 2 and you've got one power on track, a different one on the dyno. Or just hide a toggle switch under the dash. I never got the blatant cheating in amateur racing though. I can see it when it's a career thing. You need clorox sponsor money so you need some wins, makes sense. But when you're racing for the love of the game I don't understand how it would be satisfying to win knowing you'd gone past pushing the rules to the edge to full on deliberate bs.
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Mar 16, 2021 23:30
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honda whisperer posted:I never got the blatant cheating in amateur racing though. I can see it when it's a career thing. You need clorox sponsor money so you need some wins, makes sense. But when you're racing for the love of the game I don't understand how it would be satisfying to win knowing you'd gone past pushing the rules to the edge to full on deliberate bs. When cheating in video games just isn’t expensive enough for your tastes.
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Mar 16, 2021 23:33
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I mean, these days, canbus anyway but yeah it's basically unenforceable other than restrictors. Listening to people, it's sometimes gets to a "everyone else is cheating, I need to cheat more" if they get pushed to a certain point, but usually it's actually "this is within the letter of the rules". Like NASA PTW stuff - the rules say all this stuff about how it has to dyno as such, can't be driver adjustable... but don't say that maps can't change on their own. Again why I kinda like the scca approach but I'm biased.
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Mar 17, 2021 00:04
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Crossposting from the iRacing thread because this one gets more traffic - hope that's okay. This year I'm finally getting off my rear end (well, on my rear end but in a car) and decided to git good at driving fast, and since the season hasn't started yet, that means practicing in sims. I feel like I'm at the point where I'm no longer an imminent danger to those around me, but I was hoping the grizzled veterans could point out a few things to focus on first because I'm having serious ADD about it ("I should practice trail braking, no wait throttle control, no wait braking points, no wait...").
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Mar 20, 2021 03:41
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KillHour posted:Crossposting from the iRacing thread because this one gets more traffic - hope that's okay. Practice threshold braking with brake points first, when you have that down solid then learn trail braking
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Mar 20, 2021 05:53
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KillHour posted:Crossposting from the iRacing thread because this one gets more traffic - hope that's okay. Never tried a sim but my suggestion is similar - Keep your eyes up and sight your marks (for braking, turn-in, apexes, exits) as far in advance as possible, then consistently hit them lap after lap. Making sure you're not having to do anything unnatural to hit them smoothly (eg cranking the wheel mid-corner because you turned in too late) When you're really dialed-in on that you can work on moving back your braking points; just remember that exit speed >> entry speed for laptimes
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Mar 20, 2021 08:41
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Thanks for the tips. You know, I swore I posted the actual video I wanted feedback on but it turns out I'm an absolute idiot. Sorry about that! https://www.youtube.com/watch?v=WBLkArqOwB0
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Mar 20, 2021 09:40
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For this thread in car footage means more, at least to me.
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Mar 20, 2021 16:17
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Helmet assistance - I’ve got a track day next weekend and checked my old helmet. It’s pre 2005. Suggestions on where to order a helmet on short notice with good face padding?
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Mar 20, 2021 19:00
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You can buy cheap SA2020 helmets on amazon and get it in a couple days. I think mine is a Zamp? Seems similar to the racequip stuff. There are probably some not-lovely options too.
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Mar 20, 2021 20:03
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Summit and jegs seem to ship really fast. Option b would be if there's a shop near you for pick up.
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Mar 20, 2021 21:34
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Cota is hard on the brakes, kids Also, don't be a dumbass like me and run your brake pads all the way down to the backing plate and then some SlapActionJackson fucked around with this message at 16:55 on Mar 21, 2021 |
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Mar 21, 2021 16:53
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Is that the leftover backing plate or what? 
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Mar 21, 2021 17:48
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Piston tops got hot enough to deform.
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Mar 21, 2021 18:00
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drat I've done some damage to brake pad plates before, especially at COTA, but that's ridiculous I'm surprised you didn't notice a loss of stopping power
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Mar 21, 2021 18:22
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I did, that's what got me to come in and swap pads. But the falloff in performance wasn't as big as you would think looking at those inboard pistons. Shout out to Motul - the brake fluid gave no fucks while all of this was going down.
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Mar 21, 2021 19:04
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SlapActionJackson posted:Cota is hard on the brakes, kids Whoa.
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Mar 22, 2021 19:06
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Any of you guys tracking a 6th gen SS 1LE Camaro? From what I gather all I need for my summer plans of a handful of HPDE is a brake fluid flush (SRF) and an alignment, but if anyone has any thoughts on other prep I should look at I am interested. Its a 2017 with about 7500 miles. Stock wheels and supercar 3 tires.
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Mar 22, 2021 20:15
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I mentioned my friend that runs one in TT3 locally, he reckons the SC3R is a basically cheater tire and gets good life out of them too. He is bone stock other than GC camber plates up front set to -3.5 camber, 7.25-ish caster, and 0 toe. He is looking into adjustable rear control arms since he can't get enough camber out of stock for even wear, I think he is around -2 degrees there. Anyway, his comment was "Honestly just do high temp brake fluid and max the factory camber out... will be good for a bit as he learns the car." e: Also, "My brakes will get a bit spongy after 2-3 laps of really full send but they never really go away. Just one lap at 7/10ths or so and they're good to go for another 2-3 laps at full send." BlackMK4 fucked around with this message at 20:39 on Mar 22, 2021 |
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Mar 22, 2021 20:31
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BlackMK4 posted:I mentioned my friend that runs one in TT3 locally, he reckons the SC3R is a basically cheater tire and gets good life out of them too. Nice, thanks for asking him. That seems to be the common wisdom, just alignment and fluid needed 'til you get serious. The supercar 3R is supposedly 100tw, but guys get about 4 trackdays out of them at the most, so it might be 100tw like the RE71R is 200tw - numbers don't matter when nobody polices them I guess. I am on a set of the stock Supercar 3 (non-R's) which should be fine for a while. Edit - did he say what pad he runs?
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Mar 22, 2021 20:40
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