SCCA CAM-C Thread

[kz]

Our HPA course has been shut down in Houston for the foreseeable future, and no alternatives in sight. Looks like full track build incoming now for me.

Tbh, our group has had 6 significant (ie property damage along with the car damage) wrecks over the past 18 months, and while our group was responsible and paid for the damage, other groups (I won't name names, but let's just say sideways is their jam) didn't, and flagrently violated site rules and then posted the videos to social media. Hpa punishes people for making mistakes, especially newer drivers. So imagine a new driver with a passenger hanging out the window "for the 'gram"...

I'm hopefully we find a huge parking lot somewhere.

This is exactly how we (Cincy) lost Wilmington Airport (at the time it was second best site after Lincoln, large concrete pad for Tour / Pros and large parking lot for locals) - half mile drag "racers" took out some of the airport equipment on the runway and Port Authority doesn't even want to talk about renting a site for ~8 years now (only got to run there twice, I was complete novice and mostly tried to not get lost).

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[Dallas J]

So....

Anyone making significant changes this winter?

Last year was my first test into the V8 RWD world after 20+yrs racing AWD. Just did the basic, coilovers, wheels/tires, important bushings. So I had lots of things that "could" be done.

Here's the things I'm working on or have done,

• ESS G2
  • Stock power required me to try to constantly downshift to 2nd (10speed) to get any pull out of corners. And I just wanted a boosted V8...
  • Radium also took the car for 2months to do final dev of their full kit on Gen3 cars. So it'll have all that stuff.
• Billet front Uprights
  • I make these, but not a vendor here so wont violate rules.
• Ciro Design dual element wing
  • These aren't made for the mustang, but I pulled the wing off the Evo and making some billet mounts for the trunk and custom vertical mounts. They'll have a joggle to fit the different width of trunk mount vs wing mount, but that should give a bit of extra stability than just vertical
• Small splitter
  • Still working out details here.
• Seats
  • Another "pulled from Evo" part.
  • I have stock heated/cooled seats, so I think the heaviest you can get in a mustang.
• Fresh tires
  • Last year I was just working thru old Evo 315 A052 take-offs
  • Will be ordering 315 RE71RZ and 275 PS4S soon.
• Wiring in HS2 OBD connector for SoloStorm
  • All the good stuff to log is on the HS2 CAN port which on newer cars (18 or 20+?) isnt available at the standard OBD port.
  • Really need wheel speed to watch inside rear.

Other than that, I'll be playing with spring and bar rates, things will be quite different than last year with the front uprights, wing, and power.

Depending on how things go, I may start looking for a pair of 18x12.5-13 wheels for 335 rear tires since B-stone gave us some good sizes.

 

[NightmareMoon]

Nope, fixing my wheel well liners and an O2 sensor, but my build is pretty far along. Seats are on my list but they’ll have to wait, have other priorities

Ok so I replaced some old faded hood struts. Actually I might do a front mount anytime camera to help parking with the big splitter, and I want to refurbish some of the faded plastic and maybe replace some sun-damaged carbon fiber canards.

 

[WItoTX]

New motor...LOL

Otherwise Penskes are supposedly on the way. Changed fluids, but that really isn't an upgrade.

 

[mavisky]

Car hasn't been touched and first event is next Sunday theoretically. Will see if weather allows. Still considering a spring rate decrease, working on some custom front canards, and still want to do a gen 2 front splitter. Made some 3d models of the new canards and printed them off, but haven't made any progress in converting the over to carbon for strength/weight.

 

[mavisky]

Well first event cancelled for us. Due to this cold snap Georgia is going through the "feels like temp" for Sunday was going to be -4 at 6am when the crew was going to be setting up the course and it was going to be about 10 degrees at first car off. Well below the safe spectrum for most 200tw tires.

 

[NightmareMoon]

Well first event cancelled for us. Due to this cold snap Georgia is going through the "feels like temp" for Sunday was going to be -4 at 6am when the crew was going to be setting up the course and it was going to be about 10 degrees at first car off. Well below the safe spectrum for most 200tw tires.

whoa yeah. FTD on Blizzaks!

 

[mavisky]

whoa yeah. FTD on Blizzaks!

No there's talk of up to an inch and a half of snow so blizzaks would have ben the move for sure.

 

[Dallas J]

Spent today working on the wing mount design to re-use the Ciro wing from my Evo. I kinda guessed on placement, but its slightly forward of the furthest rearward bumper point, and top of 2nd element is 1.5in above roofline. Its roughly similar to how it sits on the Evo and didn't see much benefit of going higher or further back. Moving it forward may actually be beneficial depending on front aero balance.

I made the mount base a bit wider than the wings mount because it lines up with the trunk better and I can make a joggle in the upright which should add lateral stiffness. Its a little trickier to make than just a flat water jet part, but should be NBD.

 

[NightmareMoon]

I mean, GTD wing mounts or go home at this point

I’ve seen a bent trunk from a mount in that location. You basically bolt to a single thickness skin on the corners there so it can deform at high speed. Go racing in mexico and dented deck.

 

[Dallas J]

This outer edge here sandwiches the full thickness of inner/outer edge. Same edge the GT350 wing mounts to. I could see it being an issue if it was just the outer skin, but the lip is pretty stout. Def feels stronger than the Evo trunk which holds up great.

 

[NightmareMoon]

This outer edge here sandwiches the full thickness of inner/outer edge. Same edge the GT350 wing mounts to. I could see it being an issue if it was just the outer skin, but the lip is pretty stout. Def feels stronger than the Evo trunk which holds up great.

I’m just sayin, I’ve seen it take a dent there. Your large plates will help, no doubt. Outside of a high speed track, you’ll be fine.

 

[Dallas J]

Oh yeah, this aint a full track worthy mount especially considering the wing. Up to 100, not too worried, but I wouldn't take it to PIR with the 140-150mph front/back straight. Any wing this big would need a chassis mount to survive that.

If you havent seen the Ciro dual element wing, its pretty much the standard wing thru SM/XA grid.

 

[WItoTX]

Oh yeah, this aint a full track worthy mount especially considering the wing. Up to 100, not too worried, but I wouldn't take it to PIR with the 140-150mph front/back straight. Any wing this big would need a chassis mount to survive that.

If you havent seen the Ciro dual element wing, its pretty much the standard wing thru SM/XA grid.

You can always shim up those corners of the trunk. I've seen it on other cars. The problem there is you have a twisting motion in addition to the down force, on what is the most cantilevered part of the trunk. And a lot of twisting motion being that tall. But the gt500 mounts there too. So idk, a company spending millions on R&D probably has a lot figured out.

I'd look close at the effeciency of the GT500 wing and yours. I'd bet AJ has a wind tunnel video of the 500 wing to see airflow comparisons.

 

[mavisky]

Ive been meaning to 3d scan the void below the edges of the trunklid and the bottom od thr trunklid itself along with the hinges to model a 3d printable insert for that void. Haven't gotten around to that yet though

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