I always wanted to see the installation of a flat floor and how it transitions to a diffuser. I have also seen flat floors with a Golf Ball dimple Design to promote smoother air floor.
Nice work. I really like the quick release setup on the diffuser and the simplicity of the flat floor. If I had kept my WRX I’d probably be working on something similar.
Nice work. I made my flat floor out of CF and 1/8 in foam sheets with high temp epoxy. I then used standard exhaust shielding on top of the sheet or on edges of the flat floor that got close to hot exhaust or transmission or diff. So you need to make sure you have a way to deal with the heat which could catch that wood on fire. Also may want to think about transmission and diff coolers if you don't already have them. Even with all the templates shielding I have mine still gets hot and burns but it's been 2 years and I have only had to patch certain areas. Also I had to redesign and mount my diffuser with 9 fixation points. It made so much downforce that it bowed and ripped off the car with only 5 mounting points.
C Channel would work instead of the door latches. And then use the professional awesome things the way you did. Just make sure it’s a deep c channel or add material to the lower side.
Awesome, great video dude! I noticed that your turbo system allows you to keep some space under the car. I recently measured mine and the long tube headers are by far the lowest point. It would be easy to have holes in the floor for the headers but I wonder how much that would negate any of the benefits of an otherwise flat floor.
Hello AJHartmanAero: I was under the impression that a slight bend to the undertray ( center about 1.5 inches - 50 mm lower than the front and rear wheel area) would produce more LOW PRESSURE = OR MORE SUCTION DOWN , than a straight flat floor.... Any thoughts or experiences with that?
I like it! If i don’t have to add weight but want to play with some cheaper material like plywood how thin of plywood do you think i could go? Or try something like Alumalite?
I think you over complicated the front mounting of the diffuser but it will be cool to see the rooster tail it makes. I would also bet you end up with some kind of diff cooler since the s550s have issues with that, granted they weigh a lot more
How could the front diffusor mounting be easier but still quick release? And yes, S550's weight a lot more and make more power so heat is an issue. I don't foresee any issues but time will tell on that one.
But how would you reach all the way in to pin and un pin it? Or you mean just a non locking alignment pin? If thats the case I'm not sure I'd trust it since if the diffusor scraped hard enough on the strakes, it could be shoved back enough where the pin would back out enough to drop the leading edge of the diffusor.
The only thing that sketches me out about this is the fire hazard being on the very bottom of the car. I’m assuming you have a long term solution in mind instead of the wood
@@ajhartmanaero Yeah it was kind of hard to tell from the video but I assume you know what you’re doing obviously cuz it’s your car. I’m definitely going to use some of those quick disconnects when I build the rear diffuser on my time attack car!
![16kgs EXTRA Weight 🙈 | Flat Floor Construction And Testing Plan [#UPDATE 304]](http://i.ytimg.com/vi/JgkPxdpocVs/mqdefault.jpg)
I always wanted to see the installation of a flat floor and how it transitions to a diffuser. I have also seen flat floors with a Golf Ball dimple Design to promote smoother air floor.
Nice work. I really like the quick release setup on the diffuser and the simplicity of the flat floor. If I had kept my WRX I’d probably be working on something similar.
You are so innovative and smart. Holy geez.
Nice work. I made my flat floor out of CF and 1/8 in foam sheets with high temp epoxy. I then used standard exhaust shielding on top of the sheet or on edges of the flat floor that got close to hot exhaust or transmission or diff. So you need to make sure you have a way to deal with the heat which could catch that wood on fire. Also may want to think about transmission and diff coolers if you don't already have them. Even with all the templates shielding I have mine still gets hot and burns but it's been 2 years and I have only had to patch certain areas. Also I had to redesign and mount my diffuser with 9 fixation points. It made so much downforce that it bowed and ripped off the car with only 5 mounting points.
Thanks. Already considered all your points prior to any flat floor stuff.
@@ajhartmanaero Awesome. Good luck with VIR this weekend.
@@C5Z06CE in real life time VIR was last weekend haha. But thanks! Unfortunately had issues that caused the weekend to not be so great.
@@ajhartmanaero to bad. Sorry to hear. Was it Aero related or mechanical and unrelated?
@@C5Z06CE blow off valve got stuck open with like 2 laps left. All aero bits worked great.
AWESOME video
The bend is an upside down airfoil; perfect to create low pressre under the car!
If that bumper void area is at static pressure that diffuser should work nicely.
@27:34 Those little bits of information was downloading from the WiFi and he was listening to those inner voices having a whole conversation LOL.
C Channel would work instead of the door latches. And then use the professional awesome things the way you did. Just make sure it’s a deep c channel or add material to the lower side.
Love ya vid AJ. Keep them rolling bro
That’s sick!
Plywood has a purpose everywhere lol, good luck at VIR man love that track
Awesome, great video dude! I noticed that your turbo system allows you to keep some space under the car. I recently measured mine and the long tube headers are by far the lowest point. It would be easy to have holes in the floor for the headers but I wonder how much that would negate any of the benefits of an otherwise flat floor.
Yeah how I purposely did my exhaust allowed me several freedoms with the flat floor.
Hello AJHartmanAero: I was under the impression that a slight bend to the undertray ( center about 1.5 inches - 50 mm lower than the front and rear wheel area) would produce more LOW PRESSURE = OR MORE SUCTION DOWN , than a straight flat floor.... Any thoughts or experiences with that?
Would some naca ducts better help with cooling the trans and diff?
Yeah potentially. There’s only about 2” above the floor so duct would need to be trimmed down as well as I didn’t have any ducts on hand.
@@ajhartmanaero oh ok I was curious just how much better a naca duct would be.
Working on the same thing right now
I like it! If i don’t have to add weight but want to play with some cheaper material like plywood how thin of plywood do you think i could go? Or try something like Alumalite?
I don’t like alumalite for splitters but may be a good choice for floors.
I would add truck bed liner to the plywood. Covering it with that would make that plywood last forever.
@@jeffallen3382 the texture probably isn’t favorable for aerodynamics tho.
@@ajhartmanaero you can skim it flat before it dries...
@@jeffallen3382 interesting. I didn’t know that.
link to those cheaper quick releases?
Are you going to be able to do the side skirts in time for race day?
Unfortunately not. I’ll do those for next season.
I think you over complicated the front mounting of the diffuser but it will be cool to see the rooster tail it makes. I would also bet you end up with some kind of diff cooler since the s550s have issues with that, granted they weigh a lot more
How could the front diffusor mounting be easier but still quick release? And yes, S550's weight a lot more and make more power so heat is an issue. I don't foresee any issues but time will tell on that one.
I would have done a simple pin system. Put an L bracket with the hole in the plywood and the pin on the leading edge of the diffuser.
But how would you reach all the way in to pin and un pin it? Or you mean just a non locking alignment pin? If thats the case I'm not sure I'd trust it since if the diffusor scraped hard enough on the strakes, it could be shoved back enough where the pin would back out enough to drop the leading edge of the diffusor.
I'd use non locking pin. If you made the pins like 2-3 inches long, I think something would have to be broken to get the pin to come out
@@PhilthyHorseRacing yeah I get what you mean. Still not sure about that method in this specific case tho.
I’m thinking about doing this with a polycarbonate sheet.
Siemka bandyto . Pozdrawiam
The only thing that sketches me out about this is the fire hazard being on the very bottom of the car. I’m assuming you have a long term solution in mind instead of the wood
If you understood my exhaust routing it’s fine.
@@ajhartmanaero Yeah it was kind of hard to tell from the video but I assume you know what you’re doing obviously cuz it’s your car. I’m definitely going to use some of those quick disconnects when I build the rear diffuser on my time attack car!
I swear I can smell sawdust 😂
Wouldn't it have been easier just to use those notched metal plates and slide them onto the bolts. Instead of having locks?
Technically yes but wanted something to positively lock onto the car at the front of the diffusor.
@@ajhartmanaero gotcha. thats the beauty of building it how you want. good video