Okay, so, I’ve been messing around with this F1 tech stuff again, and this time it’s all about those blown diffusers. You know, the things that make the cars sound like spaceships? They were a big deal back in the day, but then they got banned. Now, there’s some talk about bringing them back, along with the old V8 engines, sometime after 2030. Sounds cool, right?

First, I dug up some old articles and forum posts to get a handle on what these things actually do. Turns out, it’s all about using the exhaust gases to create more downforce, especially when the car’s going fast on straights and through quick corners. The driver steps on the gas, and the exhaust gases help push the car down onto the track, making it more stable and faster. Pretty neat trick.
Then, I started looking into why they were banned in the first place. It was back in 2012. Apparently, the teams got too good at it, and it was making the cars too reliant on this one trick. So, the FIA (the guys in charge of the rules) stepped in and said “no more.” They changed the rules about where the exhaust pipes could be, basically making it impossible to use them for the diffuser trick anymore. But, those clever engineers found a workaround with something called Coandă side pods. It wasn’t as good, but it still gave them some of that diffuser effect.
My Experiment Setup
Alright, so here’s what I did. I wanted to see if I could somehow recreate a simplified version of this whole blown diffuser thing. Not with a real F1 car, of course, but with a little model car and some basic tools. Here’s the setup:
- A small model car: Nothing fancy, just a basic toy car.
- A fan: To simulate the exhaust gases.
- Some cardboard: To build a makeshift diffuser.
- A track: Just a flat surface to run the car on.
I started by building a simple diffuser out of cardboard and attaching it to the back of the model car. It was rough, but it gave me a basic idea of the shape and how it might work. Then, I positioned the fan so it would blow air towards the diffuser, just like the exhaust would in a real car.
The first few runs were a mess. The car either wouldn’t move, or it would just spin out. But after a lot of fiddling with the diffuser shape and the fan’s position, I started to see some results. The car was definitely moving faster with the fan on than without. It wasn’t a huge difference, but it was enough to show that the basic principle was working.

Tire Changes
And there is also something about the tires. The tire company, Pirelli, they are gonna make the tires a bit smaller. They are gonna be 25mm narrower in the front and 30mm in the rear. But the wheels are staying the same size, 18 inches. And they said the new F1 cars are gonna be like 30kg lighter, which is good.
What I Learned
This whole experiment was a real eye-opener. It’s one thing to read about this stuff, but it’s a whole different ball game to actually try and build something, even if it’s just a simplified model. It really makes you appreciate how much work and ingenuity goes into designing these F1 cars. I realized that even a small change in the diffuser shape or the angle of the airflow can make a big difference. It’s all about finding that sweet spot where everything works together.
So, will we see the return of the V8 blown diffuser? Maybe. It sounds like there’s definitely some interest, especially with the push for sustainable fuels. And who knows what other crazy tech they’ll come up with by then. One thing’s for sure, it’s gonna be exciting to watch!