Mojave Project Aero Max - Arrma 6s based speed runner

[Tex Koder]

I like hot pink. Nothing wrong with it

This raises a question on 3D printing for me...is it possible to print the threads on the inside of a hole such as where the pillow balls screw in? I wouldn't think so, but I don't know Richard about 3D printing so I thought I'd showcase my ignorance.

No need to print the threads.. since it's such fine pitch..

Several methods to achieve Threads in the part-
1. (cheap & easy) Just screw the pillow ball directly into this 3D part. IF it's just to test fitting purposes, general driving -NOT for any real bashing usage.
2. Print your part in Nylon or Carbon Fiber and you can again screw directly into the part , could handle bashing. (For how long? I would not know. Will need to do actual testing to find out.)
3. Design in a cavity where you can heat-fuse-in a brass or stainless steel threaded-insert to accept your pillow ball.

Here's some vids on the matter-

 

[LibertyMKiii]

Did some initial sanding on the main body and body filler.
Still needs some work:

Been working on phase ii
Can't wait to show it.

 

[Tex Koder]

...
Been working on phase ii

Can't wait to show it.​

Am I allowed to give the good folks a tiny hint..?
NO! Shut your face!!

 

[Diem Turner]

No need to print the threads.. since it's such fine pitch..

Several methods to achieve Threads in the part-
1. (cheap & easy) Just screw the pillow ball directly into this 3D part. IF it's just to test fitting purposes, general driving -NOT for any real bashing usage.
2. Print your part in Nylon or Carbon Fiber and you can again screw directly into the part , could handle bashing. (For how long? I would not know. Will need to do actual testing to find out.)
3. Design in a cavity where you can heat-fuse-in a brass or stainless steel threaded-insert to accept your pillow ball.

Here's some vids on the matter-

Yeah, now I remember seeing these in some video I watched a while ago. That's the proper solution.

 

[LibertyMKiii]

Am I allowed to give the good folks a tiny hint..?
NO! Shut your face!!

Patience.
All will be revealed soon enough...

 

[N.Mango]

 

[Tex Koder]

Someone really should come up with a Honu/Gemera-like Logo design for this project...

 

[Tex Koder]

Someone really should come up with a Honu/Gemera-like Logo design for this project...

Well, guess that someone is me...


Based on CRUSH 'The Cool Dude' sea turtle from "Finding Nemo"..

Half Shape - Slimmed down version

Very Rough draft at the moment..

I'm planning on adding flames of some kind in place of the fins...
Maybe just to the rears..


Thoughts?

 

[N.Mango]

Thoughts?

Looks like you're on the right track

 

[LibertyMKiii]

Well, guess that someone is me...


Based on CRUSH 'The Cool Dude' sea turtle from "Finding Nemo"..

Half Shape - Slimmed down version
View attachment 254114

View attachment 254115

Very Rough draft at the moment..

I'm planning on adding flames of some kind in place of the fins...
Maybe just to the rears..


Thoughts?

Looks good,
I am not opposed to forking out $10 for a sticker to save you the trouble

 

[Tex Koder]

 

[N.Mango]

View attachment 254136

View attachment 254135

View attachment 254138

Just wow!
Creative level 10

 

[Tex Koder]

Just wow!
Creative level 10

Perhaps I should 3D print this into a thin flexible stencil so Liberty can spray paint it on his custom shell , however he likes..

 

[N.Mango]

Perhaps I should 3D print this into a thin flexible stencil so Liberty can spray paint it on his custom shell , however he likes.

That would be awesome on his new rig!
I know he's focused on the design still and a paintjob is not part of his thinking process yet....?

@LibertyMKiii

 

[LibertyMKiii]

Perhaps I should 3D print this into a thin flexible stencil so Liberty can spray paint it on his custom shell , however he likes..

Yes that would be great!

That would be awesome on his new rig!
I know he's focused on the design still and a paintjob is not part of his thinking process yet....?

@LibertyMKiii

It is being considered. I know I want my bright orange Tamiya paint. So the turtle/stencil would likely be black or white.

 

[N.Mango]

Yes that would be great!



It is being considered. I know I want my bright orange Tamiya paint. So the turtle/stencil would likely be black or white.

I'm just the instigator not the artist. haha
would be really nice tho.
@Tex Koder it's in your hands. You got this. haha

 

[Tex Koder]

I'm just the instigator not the artist. haha
would be really nice tho.
@Tex Koder it's in your hands. You got this. haha

Stencil and vinyl Decals coming soon..

 

[LibertyMKiii]

Been jumping around from pahse 1 phase 2 and phase 3 work while not completing and one of them

In the interim, I thought I would share some garbage that goes through my brain and explain to you just how important aerodynamics are.
Let's say a 1/7 scale GT body occupies 0.7 sq ft. That is probably too much but what I used in my calculation.

Another unknown is my Cd. I would say the bodies we run and the downforce that we need and current GT bodies are likely closer to the 0.75 Cd illustrated here:

If we are efficient and closer to 0.25 Cd

m/sec	MPH	0.7 sq ft surface area	drag Cd	drag in Newtons	Drag In pounds (1N = 0.225 lbs)
13.41	30	0.065 sq meters	0.25	6.865	1.544625
26.82	60	0.065 sq meters	0.25	29.22	6.5745
35	80	0.065 sq meters	0.25	49.76	11.196
44.7	100	0.065 sq meters	0.25	75.11	16.89975
53.64	120	0.065 sq meters	0.25	116.88	26.298
62.58	140	0.065 sq meters	0.25	159.09	35.79525
71.52	160	0.065 sq meters	0.25	207.8	46.755
80.46	180	0.065 sq meters	0.25	262.99	59.17275
89.4	200	0.065 sq meters	0.25	324.68	73.053
98.34	220	0.065 sq meters	0.25	392.87	88.39575

If we are closer to the 0.75 Cd the numbers look excessive:

m/sec	MPH	0.7 sq ft surface area	drag Cd	drag in Newtons	In pounds (1N = 0.225 lbs)
13.41	30	0.065 sq meters	0.75	21.91	4.92975
26.82	60	0.065 sq meters	0.75	87.66	19.7235
35	80	0.065 sq meters	0.75	149.29	33.59025
44.7	100	0.065 sq meters	0.75	243.51	54.78975
53.64	120	0.065 sq meters	0.75	350.66	78.8985
62.58	140	0.065 sq meters	0.75	477.29	107.39025
71.52	160	0.065 sq meters	0.75	623.4	140.265
80.46	180	0.065 sq meters	0.75	788.99	177.52275
89.4	200	0.065 sq meters	0.75	974.06	219.1635
98.34	220	0.065 sq meters	0.75	1178.62	265.1895

Based on these numbers I'd say our cars fall closer to the 0.25Cd list.

As seen in the picture of various car shapes above, the shape/design is one factor in drag, but you also have the surface area.
Some is the length for some skin friction drag, but mostly we can control the frontal area in a body design.

I like this image as it illustrates the frontal area well and has been referenced it in other builds.

The goal here is to remove some of the squares that the air will interact with.
First up we don't have people in the car so we can remove the windows and driver's canopy.

Now specific to this aero max project I am opening up some areas between the center and wheels.
And minimized both the height and raised the ride height because I don't need it down to the ground like a GT car does due to my aerodynamic arms/wings.

 

[Doom!]

AAAAAAARGH!!! Dude! some warning before you throw all those numbers out there, I think my brain just imploded!

Now that my eyes have uncrossed, I like where you are headed with this.

 

[Tex Koder]

AAAAAAARGH!!! Dude! some warning before you throw all those numbers out there, I think my brain just imploded!

Now that my eyes have uncrossed, I like where you are headed with this.

Next time scroll past the spreadsheets As Fast as you can!!
Saves your brain from possible contusions...