Opinions on this Wing

[Strych9]

Just to follow up.

The electronics engineer (let's call him Drewseph) I mentioned is sorting through packaging, weight, and a handful of other things to decide between fully electronically driven and electro-hydraulic.

So far, this is what we have:

Raspberry pi with a table base. Handful of IF statements written in. Things like:

IF throttle position >#% AND steering angle <#°, THEN # AOA value.

IF Brake pressure >#% AND steering angle <#°, THEN # AOA value.

Things like temperature (air density), sunlight (shaded track isn't as warm), run duration (tire heat) all affect aero and grip so those would have to be built in as well. Small changes but still.

Tables have to be adjustable.

He is looking into how to pull all the input data. If anyone knows an easy way to pull it, let me know. It doesn't seem to be much of something I need to watch over since he has made a few self-driving cars out of cars that are not self-driving from the factory so getting all that data is nothing new to him. There are also write ups on how to pull data from the supra and make it self-driving, but that is all above my head and 100% his wheelhouse.

Tables get fed into a simple algorithm and a final value output to an interface, then to the motor/pump assy., which feeds two linear actuators. On failure, all values have to go to somewhere between max downforce and max drag AOA (entry stability is #1).

Actuators would be mounted in the vertical portion of the uprights and a simple linkage to pull the second element to desired AOA. Bottom of the uprights would have to allow for tubing to the actuators. I'm guessing 1/4" SS tube or so, then braided all the way to the pump.

I'm personally a fan of ultra thin wall chromoly aerofoil tube for the uprights. It has the space inside, easy to work with (just weld it like carbon), easy to replace it if you hit a bird or some shit, and it's relatively cheap compared to laying up a carbon fiber piece and bonding everything together. If not chromoly, I can make lay carbon fiber. If not that, I can surely figure out a simple exposed aluminum solution that is visually appealing. If not that, idk like wood or some shit.

Need to pick a wing and second element profile that suits what you're after. Luckily, info for a ton of wing profiles are readily available online so I can 3d print a to scale version to shape the mounts without having to have the actual wings.

I reached out to my aero buddy and his response was "You can figure it out. Text me when you have some track data and feedback."

More details coming soon.

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[i3igpete]

Look into tapping the canbus network to get most of your required inputs. I'm guessing he's already doing this, but if not...

https://www.supramkv.com/threads/fast-wireless-can-logging-in-racechrono.26659/

Here is a listing of the items that will now be datalogged from the CAN network:

Accelerator position
Air temperature (Ambient)
Battery voltage
Brake pressure front
Brake pressure rear
Coolant temperature
Engine RPM
Oil temperature
Engine Torque
Gear
Lateral acceleration (G-Force)
Longitudinal acceleration (G-Force)
Pitch angle (Yaw)
Speed
Steering angle
Throttle position
Torque (gearbox)
Wheel speed FL
Wheel speed FR
Wheel speed RL
Wheel speed RR

Would also caution about the window shoppers. There are lots of them. The more requests they ask, the less likely they are to actually buy it. The goalposts will keep moving.

On the occams discord there are a few people experimenting with dual and triple element wings using scaled-down MSHD, but following the general placement guidelines from the existing s1223 literature as a starting point.

Would also recommend starting your own thread. If the OP decides to delete their account or gets banned, it will take this thread down.

 

[razorlab]

Also keep in mind most competitive orgs don't even allow active aero, let alone static dual element, so the pool will be that much smaller. Normal track days though you can do whatever the hell you want.

Reality is you might have like five people interested, and maybe 0.025 of them will actually commit. Active aero is not cheap and pretty niche. Reality is that there are 5,000 hot boi street drivers on this forum and like 5 track guys.

Also, I've seen this stuff come and go a hundred times with nothing to show for it. Anyone remember the traction control guy? Or the gauge guy?

 

[Rensuhlo]

Also keep in mind most competitive orgs don't even allow active aero, let alone static dual element, so the pool will be that much smaller. Normal track days though you can do whatever the hell you want.

Reality is you might have like five people interested, and maybe 0.025 of them will actually commit. Active aero is not cheap and pretty niche. Reality is that there are 5,000 hot boi street drivers on this forum and like 5 track guys.

Also, I've seen this stuff come and go a hundred times with nothing to show for it. Anyone remember the traction control guy? Or the gauge guy?

Pepperidge Farm remembers

 

[PowerGetter]

Also keep in mind most competitive orgs don't even allow active aero, let alone static dual element, so the pool will be that much smaller. Normal track days though you can do whatever the hell you want.

Agreed. I know most of the Supra guys who compete in GTA/GL in the California region and none run in any of the classes above street mainly because of the exponential cost when jumping up to the next class. Factoring that rules in Street and below do not allow active aero or dual element, the market really is then just street guys that want street cred, HPDE hero's, and Limited/Unlimited class guys. Not sure if that's a big enough market.

Anyways -- here's HKS' attempt:

 

[Strych9]

I can say flat out that I have zero intention of making this something I sell. I MAY make a second one but that's going to be a BIG maybe.

I've been a motorsports fab shop owner. Never again. I'll race on someone else's dime, build someone else's car, or I'll play with cool new toys (which is what this will be if everyone gets on the same page), but I have absolutely zero plan of doing this to make money.

Any and everything I post online is something I would be willing to document to the point of facilitating a DIY. The only thing I put up that comes close to what I do in racing for any sort of income is the consulting I do for standing up a fab shop or helping initiate a product line for motorsports/automotive.

I'm literally only on this forum to maybe help out on a few projects if they're fun.

 

[Strych9]

Would also caution about the window shoppers. There are lots of them. The more requests they ask, the less likely they are to actually buy it. The goalposts will keep moving.

Oh I've been down this road. The one's that are serious just want to point at what needs done when you show up and let you go to work.

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