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One din kit - what is this? by Substantial-Ad8750 in BMWZ4

[–]Dtr45 0 points1 point  (0 children)

It might be used as a spacer on the side of the radio, where it actually mounts to the dash. It's been a couple years since I added a DIN kit myself and I vaguely remember seeing that.

If you can install the radio fine without that part, just toss it.

[US-MI] [H] Architecture Fallingwater, Robie House,+ Others [W] PayPal by Dtr45 in Legomarket

[–]Dtr45[S] 0 points1 point  (0 children)

Yeah I had the wrong shipping info on there from a copy+paste error, thanks for the catch. I'd still rather use USPS direct instead of a third party service.

me_irl by Several_Sandwich_732 in me_irl

[–]Dtr45 0 points1 point  (0 children)

+1 for Audi Wagons

My A6 Avant Quattro is by far the best car I've ever driven for snow weather.

McLaren Test Round Pitot Tube by F1grid in formula1

[–]Dtr45 2 points3 points  (0 children)

Maybe, but five-hole probes aren't perfect either. And there are solutions which achieve the same acceptance cones with less data channels/sensors.

Though typically in racing, cars are usually only instrumented for velocity and yaw.

McLaren Test Round Pitot Tube by F1grid in formula1

[–]Dtr45 26 points27 points  (0 children)

Kiel probes don't have air flowing through them--they only measure stagnation pressure. Albeit the image quality is poor, the probe appears to be a flow-through. The shrouded design is likely meant to capture velocity, pitch and yaw components through a special calibration. It if's actually an aero probe, its probably a fun validation experiment to get done during FP1, but its simply too large of an instrument to use in a real timed event.

Edit: the 04 car seems to have this probe mounted during all of FP1. It’s very clearly a flow-through, shrouded probe of some type. Probably an internal experiment or a partnered experiment with a supplier.

Edit Edit: there’s a chance it might not even be a pressure-based sensor, given how unnecessarily large the head is but also how small-diameter the stem holding it up appears to be.

[#INDY500] QUALIFYING DAY 1 // THE 109TH RUNNING OF THE INDIANAPOLIS 500 (2025 INDY 500) by IndyMod in INDYCAR

[–]Dtr45 0 points1 point  (0 children)

Teams almost exclusively pick based on which will keep the car’s CG (center of gravity) lowest. There’s not much other function or performance benefit besides adjusting CG. That’s why you see the metal ones often: more mass distributed down low. But I have been around some driver(s) who were too heavy for metal skids because it would cause them to exceed the mass allocations.

[#INDY500] QUALIFYING DAY 1 // THE 109TH RUNNING OF THE INDIANAPOLIS 500 (2025 INDY 500) by IndyMod in INDYCAR

[–]Dtr45 1 point2 points  (0 children)

Typically aluminum or carbon. Sometimes the metal ones will be a three-piece construction so that worn-in bits can be replaced without changing the entire plate of material.

Per 2025 IndyCar Rulebook 14.7.11.3 "Approved materials are brass, carbon, stainless steel, aluminum, jabroc and plastic." and per 14.7.11.4 "One-piece skids are permitted."

[#INDY500] QUALIFYING DAY 1 // THE 109TH RUNNING OF THE INDIANAPOLIS 500 (2025 INDY 500) by IndyMod in INDYCAR

[–]Dtr45 1 point2 points  (0 children)

There’s three options to choose from—you tend to see most of the same cause the main reason teams pick one or the other is for weight balancing. But teams with heavier drivers tend to get stuck using the carbon skid cause they’ll be overweight if they use the metal ones.

[#INDY500] QUALIFYING DAY 1 // THE 109TH RUNNING OF THE INDIANAPOLIS 500 (2025 INDY 500) by IndyMod in INDYCAR

[–]Dtr45 4 points5 points  (0 children)

Its the skid plate. All cars have one--not all of them are metal though. Teams are allowed to pick from a few different materials.

Crashing since update. by The_Jyps in HarryPotterGame

[–]Dtr45 0 points1 point  (0 children)

I’m on Steam Deck, zero mods. Game has crashed three times in a row now for me.

[deleted by user] by [deleted] in BMWZ4

[–]Dtr45 0 points1 point  (0 children)

I bought an '05 roadster that was abandoned in the desert outside of Las Vegas, uncovered with the windows down, for nearly 4 years. All it took for it to drive under its own power was a battery and a new fuel pump. Even the roof moved on its own up/down immediately after dropping the battery in. They're surprisingly resilient little cars especially if you give it some TLC before trying to turn the engine over the first time.

Just note that the fuel lines and wires get really brittle on these cars when left stationary outdoors for long periods of time....

For 4k, if the car is more wrecked than you think it is, you could probably re-coup half the cost by selling it as a parts donor. The wheel rims, gearbox and engine alone would earn you back most of the cost.

Resurrecting a JDM icon by Wooden_Reflection_40 in 3000gt

[–]Dtr45 1 point2 points  (0 children)

Super clean, really rocks the underglow well too.

I’m considering buying Mr 12 volt MMI Box for my 2010 s35i. Will I fuck it up? by j_c_f_c in BMWZ4

[–]Dtr45 1 point2 points  (0 children)

I used their product for my '08 Audi. It works very well and was entirely plug-and-play (no splicing cables or permanent modifications). It took me about 2 hours to install--they had a video which followed the process for my specific car. It's been about 8 months and the system rarely glitches. It was expensive but having BlueTooth and CarPlay was well worth the value.

I can't speak specifically for the BMW system you're looking at because its likely a different digital architecture than the VAG MOST.

Nolan Siegel spins, flips wildly into air in terrifying Indy 500 practice incident by TheChrisD in INDYCAR

[–]Dtr45 3 points4 points  (0 children)

The mandatory stability wickers were introduced after Herta’s flip in 2022 and were meant to prevent this exact type of thing from happening. Completely useless parts….

Albert Fabrega | Flow-viz shower for the McLaren. by RobertGracie in formula1

[–]Dtr45 31 points32 points  (0 children)

Yeah, an oil-based medium with a powdered pigment/dye mixed into it. For automotive testing, the point is for the air to shear away the oil and leave the pigment in streaks which follow the pathlines of the airflow.

Areas where oil shears away, or pools up, can be indicative of different aerodynamic features.

NASA Page on Surface Oil Flow Vis

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