Leafy

iTrader: (1)

Which diameter front bar? Same as Billy? Are you bottoming out the front suspension? My car would slalom great with the softer suspension setup in it but sustained corners it would just get onto the front bump stops and not turn, I ended up trying rear toe out, and a rear bar but 1k front 650 rear with no rear bar ended of balancing it well. The sfr bar on the 2nd from the end hole + the loss of nose weight once I came back with the mzr motor made it a little loose, but I think without the nose loss weight and maybe a hole stiffer on the sfr bar with that spring setup would be prime.

navalhawkeye

Prime =
1000 front, 4th hole on bar
650 rear, no bar

?

Leafy

iTrader: (1)

Yes. With like 3.5* front camber, maxed caster, 1/4" toe out, 2.5* rear 1/16 toe in. That's what I liked my car the best at. With like 1/4" rake. Idk about 600lb rear springs but 650 requires 5" long springs instead of 6".

navalhawkeye

That's pretty close to where I'm at. -3* rear camber and 0 toe. The rest is identical.

Caster I'm at 5*. There was definitely ~7* available, but chose to go with 5.

hector

Is the lack of grip at high speed or low speed? Just basic thinking here but if it's low speed try making changes to mechanical grip. If high speed, try aero changes.

navalhawkeye

I feel like it's not really that closely tied to speed. It seems pretty consistently mid corner sweepers.

TNTUBA

iTrader: (1)

Our 90" wheel base has a meaningful impact on our cars "steady state" abilities...but our relative narrow width and relative low weight helps us transition. It's always a balancing act.

Through the middle of a sweeper is the one area where I just HATE my car. But it does everything else so well, I'm not giving up those things to "fix" it.

Leafy

iTrader: (1)

Less front toe out will help with the middle of the corner.

The short wheel base makes the tuning window narrower between unrepentable push and undrivable oversteer. You shouldnt really have an issue balancing steady state and transition handling balance unless your shock tuning is all jacked up or you have a binding problem and you just manage to bandaid one but not the other.

TNTUBA

iTrader: (1)

Yea man. Those jacked up shocks and band aids all are pretty worthless.

navalhawkeye

Softened the front bar and it got a lot better.

navalhawkeye

So, I went a hole softer on the front bar, and it felt significantly better. The front end feels like it's working now, where it didn't before. It's maybe a touch loose on exit, but that could be tires. These probably have 120-130 runs on them. Got out-paxed by STR, so, meh. Coned all my morning runs as the turn in was so much better. This should be much better at lincoln.

TNTUBA

iTrader: (1)

If it's a touch lose on pavement, it should be close for LAP. But new tires will change the balance slightly too.

Since they have moved the practice course, there is no real data for how that surface compares to the actual race surface.

Historically there was a meaningful difference. I.E. your car could be great on the practice course and garbage on the race surface.

I have your tires already loaded into the trailer and will be hitting the road Wednesday after work.

Looking forward to hanging out again.

navalhawkeye

Awesome! Thanks Eric. I'm so excited for this.

navalhawkeye

A friend took photos at Bristol on a old film camera. Captured a cool moment.

navalhawkeye

Happy with my third place in SSM. I knew going in I had nothing for Thorne (Big Bad Wolf - 700whp S2000 that has run One Lap Of America, and towed Jet Skis - https://www.instagram.com/thebigbadwolflives/). That car, and he are operating on a different level.

I was surprised to be in 2nd place after day one on the East course, as I felt like that was the more power intensive course, where my car is generally lacking. I was almost 1 full second behind Thorne, but 3 tenths or so clear of Randall (TNTUBA's car), and even more clear of everyone else.

Day 2, I was kind of expecting to be more competitive vs the not-Thorne contingent, as it seemed like a more handling oriented course. But, I was never able to really put a great run together. I was almost the same 1 second behind Thorne, but Randall was only half a second off which moved him ahead of me. If I had a fourth run, I might have been able to improve a little bit, but not sure it would have been enough.

I need to take the shocks off my car, as we're thinking something is broken there. Through the finish on the East side, the front end was bouncing pretty violently while driving straight/coasting. You can also see in the West course video in the long right hander out of the show case, that it does not handle those bumps well. I've not seen video of any other car that reacted that violently to those bumps.

Also, see these two GotCone pics:

2019 SCCA TireRack Solo National Championships » SSM » 3g7a8716.jpg: GotCone Autocross & Rallycross Photos
2019 SCCA TireRack Solo National Championships » SSM » 3g7a8717.jpg: GotCone Autocross & Rallycross Photos

That's full compression to almost full rebound in ~10 feet. WTF.

Anyway, video.

East inside: East outside: West inside:
Can't wait for next year. Already planning the upgrades.

I broke the splitter just before leaving because I'm an idiot. So, going to start that winter project this week. Foam core, wrapped with fiberglass. Hoping it weighs half or less what the current one does.

navalhawkeye

Splitter pictures: https://photos.app.goo.gl/RGSF3jRfVbxtgRAS6

Won our Pro class for the year, and an absolute bloodbath today. It was basically whoever won today was taking it for the year. Mark dudek had 1 point over me, who had 1 point over Brian Kuehl who was also tied with Will K, who had 1 point over Grant. Whoever won was taking it.

I had the lead by a decent amount (4 tenths?) over Brandon Dean in the morning, with Grant in third. Grant's first run in the afternoon, he jumps up to just 12 thousandths behind me. Crap. We were only doing 2 afternoon runs (total of 5), so I had to make the 2nd one extra good because I knew there was a good chance Grant could just go out and drop more time. I ended up coning a run 3 and a bit tenths faster, while Grant slowed down. Phew.

So, ended the points season with top pax out of 181 drivers, and won the season


Other thoughts:

New splitter. Foam core (pink foam insulation) was not worth the effort. It ended up being about a 2lb savings over the 1/4 plywood one I had before (that I drove over packing up for nats...idiot). Not worth the effort that took. Will be going back to a plywood one this winter, which I think I can get some weight out of anyway.

But, holy christ. I added about an extra 1 sq ft of area due to actually reading the rules right this time. I know the tires I was on were good (stickers at Nats), but they weren't good enough to be the only reason the car was absolutely amazing today. So yeah. It's crazy what that little bit of extra surface area did.

navalhawkeye

Started working on some of the winter projects:

Making the front bumper a vertical air dam.



Going to make panels for the bottom of the fender that tucks into the wheel well more.



All this **** fell out, including the P clamp that didn't come from my car.



Going to do a compression and leak down test this week.

navalhawkeye

Got the IRP Shifter. Ufff. The feel is amazing. Going to try to rig something up with it so that I can lock out 5th gear, but then flip something out of the way to access reverse.

navalhawkeye

After a month and a half redoing my kitchen, I'm finally in the home stretch and can start working on the car again.





Made most of an ignition coil holder last night. Going to cut some speed holes in it, and it needs a couple gussets.

msm650

This thread makes me want to take my BSP car to SSM.