At race speeds (say over ~150 mph), you don't even need a fan or any active mechanism. Just passive venturi channels on the underside can generate so much down force they are strictly limited in F1 because they can easily enable cars to sustain extremely unsafe speeds.
There are some McLaren street cars that use passive venturi channels which from their shape alone, generate more down force at high speeds than the car's weight. In theory, the car could drive upside down (if there was a Daytona-sized race track shaped like a ~30 ft diameter pipe).
Even though average lap speeds in F1 can be around 150 MPH or faster at some tracks, corner speeds are generally much slower (in some cases approaching relatively pedestrian city speeds). The beauty of active suction is it allows for much higher corner speeds on the slow sections of the track where traditional wings and underbody elements produce relatively little downforce (being proportional to the square of the car’s speed).
An F1 car would need to move at over ~100 mph to sustain inverted driving (assuming you modified the ancillary systems appropriately—the road orientation isn’t the only limitation); a fan car can do it standing still.
Yeah, it turns out that in very specific and controlled situations, using a fan to make downforce is great. It's also a very obvious thing to do in those situations and doesn't do much for you otherwise.
Imagine a normal car having to carry around the added weight of fans, COPVs, and the plumbing to make it work. And only being able to use those only if the track is clean and there are no other cars nearby.
What suspension would you recommend removing? Are you envisioning some ridiculous Flymo-style car? I can attest that a Flymo lawnmower collapses onto the floor when its weight increases (eg with wet grass).
This is like asking to imagine a Hoover vacuum to have those fans. It’s silly because it would never happen. This is not a normal car. Comparing it to a normal car makes no sense.
The Chaparral 2j is one of the most inventive and cool looking cars I've seen.
Not f1, Can-Am but yeah, I'm really surprised this isn't a more common approach to modern track cars. Obviously banned in most motorsport but I'm surprised with all of the one-offs these days that it's not more common.
At race speeds (say over ~150 mph), you don't even need a fan or any active mechanism. Just passive venturi channels on the underside can generate so much down force they are strictly limited in F1 because they can easily enable cars to sustain extremely unsafe speeds.
There are some McLaren street cars that use passive venturi channels which from their shape alone, generate more down force at high speeds than the car's weight. In theory, the car could drive upside down (if there was a Daytona-sized race track shaped like a ~30 ft diameter pipe).
Even though average lap speeds in F1 can be around 150 MPH or faster at some tracks, corner speeds are generally much slower (in some cases approaching relatively pedestrian city speeds). The beauty of active suction is it allows for much higher corner speeds on the slow sections of the track where traditional wings and underbody elements produce relatively little downforce (being proportional to the square of the car’s speed).
An F1 car would need to move at over ~100 mph to sustain inverted driving (assuming you modified the ancillary systems appropriately—the road orientation isn’t the only limitation); a fan car can do it standing still.
Yeah, it turns out that in very specific and controlled situations, using a fan to make downforce is great. It's also a very obvious thing to do in those situations and doesn't do much for you otherwise.
Imagine a normal car having to carry around the added weight of fans, COPVs, and the plumbing to make it work. And only being able to use those only if the track is clean and there are no other cars nearby.
You actually raise interesting point. What if we could remove bunch of complicated suspension and replace with a simple fan?
They make those - they are called hovercrafts. They tend to have lots of maintenance issues.
What suspension would you recommend removing? Are you envisioning some ridiculous Flymo-style car? I can attest that a Flymo lawnmower collapses onto the floor when its weight increases (eg with wet grass).
This is like asking to imagine a Hoover vacuum to have those fans. It’s silly because it would never happen. This is not a normal car. Comparing it to a normal car makes no sense.
The Chaparral 2j is one of the most inventive and cool looking cars I've seen.
Not f1, Can-Am but yeah, I'm really surprised this isn't a more common approach to modern track cars. Obviously banned in most motorsport but I'm surprised with all of the one-offs these days that it's not more common.
Because nobody wants to be on a road/racetrack with a car that will pelt the car behind it with stones it pulls from the tarmac
Yeah, lots of prior art for fan cars.