S.A.S.C.
Solo => Technical Talk => Topic started by: PedalFaster on September 04, 2017, 02:29:52 PM
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The class name is
"SSC" (Solo Spec Class?) Edit: Solo Spec Coupe.
Details are still dribbling out -- for some reason there hasn't been an official press release or post. The class is for Scion FR-S's and Subaru BRZs; not clear if the Toyota 86 or the 2017 BRZ are eligible, but I'd assume they aren't.
Most of the setup is mandatory spec:
- Eibach springs and front and rear sway bars
- Sealed single-adjustable Koni shocks
- SPC camber bolts in front, toe links, and rear lower control arms
- 17" x 8" wheels, minimum weight 17 lbs.
- 225/45R17 tires
(tire brand open) Edit: Spec tire brand to be named - No power adders
Sounds interesting. I wonder what the PAX index will be -- it's basically an "STX lite" car.
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Too bad that Jo and I are solidly into convertibles. Otherwise, this is *exactly* the car and class I would want to race. STR has always been too brutal for use as a daily driver and/or long distance vehicle (noise in particular). STR-lite is exactly what I want.
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Yep, ditto -- I'd like something a bit tighter than a Street-class car, but I've driven full-tilt ST cars on the street, and I'd have a hard time driving one to and from events, let alone daily or to out-of-town events.
Apparently it's a supplemental class -- don't know if that's for 2017 only, or forever.
Official (but not particularly well written) announcement: https://www.scca.com/pages/solo-spec-class.
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Gonna miss the majority of the 2018 season, but REALLY hope this is still around for 2019 (and beyond)! PAX number is going to be interesting.....
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interesting.
CStreet you might call Spec ND though. :)
R
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Grassroots Motorsports magazine (right now!) has a live YouTube presentation on this pkg as we speak:
(from Lincoln!):
https://www.youtube.com/watch?v=-ByGytGJQn8&feature=em-lss
R
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Loving the whole roll out!!
Thanks for the link Reijo!
Anyone want a H Street prepped Focus SVT for a good/fair price?!
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interesting.
CStreet you might call Spec ND though. :)
True, but unfortunate. I think that people have abandoned the other cars in CS too soon; herd mentality at work I guess.
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Proposed kit components priced out in USD, no shipping (wheels & tires not yet included):
Koni Sport Shocks, factory sealed (front left strut, right front strut and rear) (http://www.ft86speedfactory.com/koni-yellow-adjustable-complete-kit-1745.html#.Wa6tMrKGOJA) $824
Eibach Pro-Plus Kit (F/R springs and F/R adjustable anti-roll bars) (http://www.ft86speedfactory.com/eibach-pro-plus-kit.html#.Wa6s-bKGOJA) $700
SPC Front Alignment Kit (camber bolts, adjustable lower control arms and toe arms) (http://www.ft86speedfactory.com/suspension-38/camber-caster-toe.html?manufacturer=12) $23 + $230 + $189
Total: $1966 USD without any real effort shopping around. The SCCA/Tire Rack deal requires you to have SCCA membership, so factor that in as well.
We can probably get a vendor here in Canada to hook us up with these products at a bulk cost if we have a lot of interest - I'm sure there's plenty of competition who wants our business. Or with some real hard googling skills and free US shipping to Montana we could save some big bucks.
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Note that Howard Duncan mentioned in the GRM broadcast about specially valved Koni yellows ... maybe not the same as off-the-shelf units ...
R
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Yeah, I kinda heard that as "specifically valved for the BRZ/FR-S" as if he was talking up the standard Koni Sport for the camera. I'd be pretty dark if a spec car was built with one-off components only available from TireRack.
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Yes ... same for the springs ... would want to know what the spring rates are before just buying any old lowering springs.
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not clear if the Toyota 86 or the 2017 BRZ are eligible, but I'd assume they aren't.
I expected that they would all be included, but you're right, that doesn't seem to be the case. If a "spec tune" is indeed developed, I hope that would allow all model years to participate. The new cars do have a meaningful increase in power... but it's not too hard to replicate with a header and tune on the old cars.
The car really wants an oil cooler in hotter climates even for solo... and for HPDE even in our climate. I think they should have added an option for an oil cooler.
I'm excited and expecting to participate.
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The car really wants an oil cooler in hotter climates even for solo... and for HPDE even in our climate. I think they should have added an option for an oil cooler.
I'm excited and expecting to participate.
Absolutely, this is a valid concern and possibly worth mentioning to SCCA?
I'm also excite.
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The car really wants an oil cooler in hotter climates even for solo... and for HPDE even in our climate. I think they should have added an option for an oil cooler.
I'm excited and expecting to participate.
Absolutely, this is a valid concern and possibly worth mentioning to SCCA?
I'm also excite.
Yep, send Howard/SCCA an email on the oil cooler for sure! I'm sure they would consider that .... They want something reliable (= cheap).
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Well hello there... looks like the parts are available already!
Tire Rack has listed SCCA Solo Spec Coupe as a sub-model of FRS and BRZ on their website.
(https://i2.wp.com/qrgarage.ca/wp-content/uploads/2017/09/qrgarage-ssc-tirerack.jpg?w=1000)
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Oooo.....that was quick! ;)
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SSC rules posted (on a Saturday afternoon?!?): https://www.scca.com/pages/solo-cars-and-rules
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No oil cooler :(
... but Q gets to keep his exhaust.
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No oil cooler :(
... but Q gets to keep his exhaust.
I don't, because my exhaust is titanium.
Titanium... mass produced... and cheaper than a lot of stainless steel alternatives.
Spec is spec... but something about their execution of this idea is starting to sour me against it.
The new update added 3 more mm of wheel offset too. +40 was already too much. I suspect that clearance tire to spring perch clearance may be a limiting factor in camber adjustment.
As someone pointed out to me, +43mm rules out some very attractive options that aren't available for purchase on Tire Rack.
+35 to +40 is the first place anyone would have looked without regulations.
Yah I can change my shift knob and add a catch can?!? Where is the oil cooler?
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Here's the official announcement from SoloMatters:
SCCA.com
For Immediate Release:
Official Specifications Announced for New SCCA Solo Spec Coupe Class
TOPEKA, Kan. (Oct. 11, 2017) -- In September, the Sports Car Club of America® unveiled the new Solo Spec Coupe (SSC) class concept for autocross competition. Today, the SCCA® has released the official specifications for that class, which can be reviewed online in full at the SCCA Solo Supplemental Classes webpage.
SCCA President Mike Cobb said the new supplemental class for 2018 national and regional events was developed to be unique in that it primarily focuses on a competitor's driving skill by having racers participate in nearly identical cars. The base platform selected by the Solo Events Board is the 2013 to 2016 Subaru BRZ or Scion FR-S, cars considered to be modestly priced, rear-wheel drive, late model enthusiast vehicles useful as both a "daily driver" and for autocross competition.
"The Solo Spec Coupe class leverages the market strength and know-how of longtime Club partners Tire Rack, Koni, Eibach and SPC Performance to create a turnkey competition platform that is both fun and cost efficient," Cobb said. "With an exhilarating car model and tremendous partner support, the SSC class will offer an amazing SCCA member experience we're sure many people will enjoy."
Howard Duncan, SCCA Rally/Solo Senior Director, pointed out that official SSC vehicle specifications include a number of mandatory components and parts that must be used and are required to be installed for national competition. Original equipment or equivalent components are not allowed at national events. However, individual regions may decide to allow SSC vehicles to compete in regional events with some original equipment.
"The Scion FR-S and Subaru BRZ are readily available and offer a platform where the modifications outlined in SSC rules can be made with ease," Duncan said. "The cars have proven to be reliable, which should help with cost containment over time. Plus, these street vehicles can be maintained for daily use while also allowing for autocross fun and performance."
Some of the mandatory components include tires sized at P225/45-17 with a UTQG treadwear grade 200 or higher, wheels with diameter and width of 17x8, and specific suspension upgrade kits and packages from Koni, Eibach and SPC Performance available through Tire Rack.
All work on SSC cars must comply with factory-authorized methods and procedures, or industry standard methods. Such work may not result in a part or combination of parts that provides a performance advantage. If a change or modification is not specifically authorized in SSC rules, it will not be allowed. However, components normally expendable and considered replacement parts may be used provided they are essentially identical to the standard parts, used in the same location, and provide no performance benefit. And it is not permitted to use non-compliant parts even if they have been set to the manufacturer's specifications.
Both front and rear suspensions may be tuned through their designed range of adjustment by use of the specified parts. No suspension part may be modified for the purpose of adjustment unless such modification is specifically authorized by the manufacturer service documentation. Suspension bushings as supplied in kits are mandatory. Those not included in the supplied kits may not be replaced with bushings of a different material.
No changes will be permitted to electronic engine management systems or their programming. The engine air filter element may be removed or replaced provided the air flow path remains as originally designed, but no other components of the air induction system may be removed, replaced or even modified. The muffler and midpipe may be substituted provided the system meets the minimum weight of 18 pounds and exits the car in one or both original locations. "Track pipes" or "straight pipes" are not permitted.
For more information, please visit the SCCA Solo Spec Coupe specifications webpage.
The Sports Car Club of America®, Inc., founded in 1944, is a 67,500-member motorsports organization that incorporates all facets of autocross, rally and road racing at both club and professional levels. With headquarters in Topeka, Kansas, the SCCA annually sanctions over 2,000 events through its 116 Regions and subsidiary divisions. Much of the SCCA's activities are made possible with support from the following Official Partners: Chevrolet, the Official Truck of the SCCA; Hawk Performance, the Official Brake Products of SCCA; Mobil 1, the Official Oil of SCCA; Sunoco, the Official Fuel of SCCA; and Tire Rack, the Official Tire Retailer of SCCA. To learn more, please visit www.scca.com.
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Links:
https://www.scca.com/articles/2008298-official-specifications-announced-for-new-scca-solo-spec-coupe-class
Specs:
https://dk1xgl0d43mu1.cloudfront.net/user_files/scca/downloads/000/038/972/2018_Solo_Spec_Coupe_2017-10-09.pdf?1507586710
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I have ordered the parts and looking forward to running the class next year. I'm even going to try and cord my tires... ON THE INSIDE EDGE! ;D
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I have ordered the parts and looking forward to running the class next year. I'm even going to try and cord my tires... ON THE INSIDE EDGE! ;D
This just in... SSC pax of 0.900 ;)
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has there been speculation about what the actual number might end up being?
I'm guessing somewhere in the range of 0.812-0.814... at least I hope that's all we're thinking.
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I am assuming it will be higher than CS (0.810), and lower than STX (0.822). Given the allowances for wheels and suspension, I think your range estimate is a bit low. Should we start a betting pool? :) My bet is on 0.815
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I am assuming it will be higher than CS (0.810), and lower than STX (0.822). Given the allowances for wheels and suspension, I think your range estimate is a bit low. Should we start a betting pool? :) My bet is on 0.815
I like the pool idea. Your guess off 0.815 is more punitive than BS (0.813)... do you think these mods allow the fr-s to outrun the Cayman? How much better is the suspension kit over the TRD upgrades that bump the twins into CS? I'd hope these mods allow the twins to outrun the ND Miata, so I'll give it something stiffer than CS. I'll cast my optimistic guess of 0.812.
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I like the pool idea. Your guess off 0.815 is more punitive than BS (0.813)... do you think these mods allow the fr-s to outrun the Cayman? How much better is the suspension kit over the TRD upgrades that bump the twins into CS? I'd hope these mods allow the twins to outrun the ND Miata, so I'll give it something stiffer than CS. I'll cast my optimistic guess of 0.812.
I think that the BS PAX is quite soft this year and will be bumped for next year. I do agree that my guess of .815 is pessimistic, but Rick Ruth has been known to start out with harder PAX values for unknown class+car combos.
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The SSC car is essentially a CS FR-S car minus 10lbft of torque, and plus 0.5" of wheel and 0.5 degrees of camber. I was being pessimistic with my guess... I think it'll be better than a CS ND Miata... but don't think it'll be better than a good BS car.
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Poll added, because.... why not haha
Let's see who's right
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And for context...
SS 0.826 SSP 0.862 XP 0.892 AM 1.000
AS 0.819 ASP 0.856 BP 0.869 BM 0.956
BS 0.813 BSP 0.853 CP 0.854 CM 0.901
CS 0.810 CSP 0.860 DP 0.865 DM 0.906
DS 0.801 DSP 0.842 EP 0.859 EM 0.905
ES 0.794 ESP 0.837 FP 0.873 FM 0.916
FS 0.804 FSP 0.829 HCR 0.825 FSAE 0.966
GS 0.793
HS 0.786 SSR 0.847 SMF 0.848 KM 0.939
HCS 0.809 SM 0.861 JA 0.864
CAM-C 0.823 SSM 0.875 JB 0.834
STF 0.800 CAM-T 0.817 JC 0.726
STS 0.818 CAM-S 0.838
STX 0.822
STR 0.830
STU 0.831
STP 0.820
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0.816
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0.816
0.815-0.816 is my guess as well.
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The SSC car is essentially a CS FR-S car minus 10lbft of torque, and plus 0.5" of wheel and 0.5 degrees of camber. I was being pessimistic with my guess... I think it'll be better than a CS ND Miata... but don't think it'll be better than a good BS car.
Your argument is (somewhat) convincing, so I ended up voting for .814
The (somewhat) is because that camber allows much more effective use of that extra wheel width. And effective usage of your rubber trumps so many things.
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We're missing one key piece of information, which is what the spec tire will be. If it's anything other than the RE-71R, Rival S, or Nexen, SSC could end up slower than CS.
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Your argument is (somewhat) convincing, so I ended up voting for .814
The (somewhat) is because that camber allows much more effective use of that extra wheel width. And effective usage of your rubber trumps so many things.
A BS Vette has about as much camber as it wants doesn't it? And a lot more tire and thrust versus mass.
The Tire Rack friendly wheel offset regulations look like they are going to limit SSC cars to about 2.5 degrees front camber. STX twins run more than three, so one has to wonder if 2.5 will be enough. In the rear, street regulations give twins adequate camber.
Regardless of where PAX ends up, I'm locked in, and excited about the idea of some local competition outside of the index.
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Yeah, we shouldn't let this devolve into a discussion over PAX "accuracy" :)
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Yeah, we shouldn't let this devolve into a discussion over PAX "accuracy" :)
Exactly, because nothing trumps my HS pax anyway :P well, except for maybe perhaps sometimes better drivers than me ;D
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All those who voted 0.814 are winners. I was 0.002 high.
New PAX = 0.806 + (0.008 Adj) = 0.814
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;D
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All those who voted 0.814 are winners. I was 0.002 high.
New PAX = 0.806 + (0.008 Adj) = 0.814
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That's assuming that using the entire group average pax change makes sense. But you could probably make an argument to measure a subset (ie: street class dropped by 0.006 on average and street touring by 0.007 on average).
Anyone guessing 0.812 to 0.814 was basically in the wheel house.
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For next year's scoring group, I am assuming that the SSC class would be grouped with street touring classes. Or would street classes be a better fit?
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For next year's scoring group, I am assuming that the SSC class would be grouped with street touring classes. Or would street classes be a better fit?
I'd say street touring
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For next year's scoring group, I am assuming that the SSC class would be grouped with street touring classes. Or would street classes be a better fit?
I'd say street touring
I'd say the same thing. The suspension mods make more difference than HP and suspension-wise they are almost the same as ST and, hence, time-wise they would be quite close.
Reijo