The Red Drift ///Machine

[bigjae46]

My CF strut plates installed



Here is the camera setup

[Bry5on]

Oh man I am curious to see this video footage. Can you add some telltales around your hood exit too?? Do you have open brake ducts?

[bigjae46]

Oh man I am curious to see this video footage. Can you add some telltales around your hood exit too?? Do you have open brake ducts?

I do! It is in the track forum. I’m on my mobile so I can post it here later.

I’ve found that I get slightly better cooling if I cover the cabin air inlet and the gap between the hood and windshield.

The gurneys in front if the hood vents makes a BIG difference. Not sure what the right size is. In the video I took I had a 1.5” gurney and you saw a long tail of recirculation which might indicate air extraction from what I’ve been told. Could be wrong about it.

Its been experiments so far. I’ll get a baseline in the summer and decide what to do after that.

[bigjae46]

Oh man I am curious to see this video footage. Can you add some telltales around your hood exit too?? Do you have open brake ducts?

https://nam3forum.com/forums/forum/special-interests/track-autox/283550-aero-testing

[Bry5on]

Wow no kidding, that floppy hood is really letting a shitload of air pressure under the hood. Definitely seal that up! Also, did you delete the radiator shroud/guide in front of the radiator? It looks like your telltales are showing the air being directed around the radiator. I would have expected the nostril telltales to be way more straight lined into the radiator with ducting and hood vents. Very cool, thank you for sharing

[bigjae46]

Wow no kidding, that floppy hood is really letting a shitload of air pressure under the hood. Definitely seal that up! Also, did you delete the radiator shroud/guide in front of the radiator? It looks like your telltales are showing the air being directed around the radiator. I would have expected the nostril telltales to be way more straight lined into the radiator with ducting and hood vents. Very cool, thank you for sharing

I still have the front ducting. I need OE kidney grilles so the air doesnt spill between the hood and the ducting.

[bigjae46]

Onto NASA Houston Spring Fling! Only my 2nd event and a lot of learning.

TT4 only had 1 entrant so I ended up running TT3. Not really ready for TT3 but these Falken RT660s will carry me to victory! I am going against a fast driver in a fast car (E92 M3) - I'm pretty sure I was his last instructor 6 years ago. I know for a fact he's a fast driver so it should be a good challenge.

I had to be at my best to have a chance and I wasn't. When I analyze data, I usually want to see a couple of things:

- 2 best sectors in the best lap
- a best rolling lap which includes 2 or more best sectors in a lap
- sectors should generally be within .1-.3 seconds of each other

If I meet those 3 criteria, I'm driving well and consistently. And this data is useful to figure out where I can find lap time.

Despite my weight being optimized within 10lbs of my min weight...I never got there. Got smoked by 3 seconds.

- Falken RT660s won't cut it in TT3...not even close. At least for this platform.
- Ballast can be used to tune the handling. It might be possible to improve or even optimize L-F and F-R balance with careful ballast placement. The biggest limitation is mounting location.
- Excuse here...the TC Klines are about dead. I think the right front strut didn't like going off and catching air back in Jan. The splitter scrapes a more often on left handers and it feels bouncy.

I could have been about 1-1.5 seconds closer but I don't think I could have beaten him. I did outrun a C7 vette and a CTS-V on slicks.

[bigjae46]

Falken RT660 review

These are great budget tires that I think are faster than Toyo RRs. 275/40R17 set me back $1026 plus tax.

First, definitely takes an extra lap to get them to temp. My hot target for RRs is 30psi which puts me at about 22-23psi cold. I bumped these up to 24psi which got me to about 31psi. I will try higher pressures to see at what point it gets worse. I think I'll settle around 32psi.

First, they are the opposite of the RRs - stronger front end with a weaker rear. Once they were up to temp, the front end had more bite and feel especially under braking. Braking is the RR's biggest weakness. The rear end felt vague with the Falkens. It was more difficult to throttle steer. Maybe slightly higher pressures in the rear could help with this. I'm guessing there is a difference in sidewall stiffness.

I have 12 heat cycles on them so far and the wear looks minimal.

So far these are relatively faster 200 treadwear tires for a budget and seem to last. Looking like a great DE tire.

[George Hill]

Blake is very fast, tough competition for sure. Don't sell yourself short either, you forgot to mention that to beat him you would have also had to set a TT3 lap record. And is he still running 315s? I thought I saw him mention trying to fit 335s?

[bigjae46]

Blake is very fast, tough competition for sure. Don't sell yourself short either, you forgot to mention that to beat him you would have also had to set a TT3 lap record. And is he still running 315s? I thought I saw him mention trying to fit 335s?

Not sure what size, he mentioned he was running Hankook slicks. Yeah, Blake is an example of a great driver with a well setup car. I beat him last year at MSRH but I don't think he really came fully prepared. I did walk away learning a lot more this year than last year.

[bigjae46]

Making some carbon splitter tunnels.

The infusion



Straight off the molds



Trimmed and ready! Didn't bother with the polish on this one.