Xmod aerodynamics

[rascusn3]

Does anyone change their Xmods to make them more aerodynamic? things like removing the rear view mirrors, making the bottom of the car as flat as possible, lowering the body,.... I think that it would definantly make the car faster by a bit. I was considering doing this on my new car when it arrives. I was wondering if it has been done and, if so, how much of a difference it makes.

[texan_idiot25]

Totally irrelevant at the speeds most xmods go. Unless your regularly doing 25-30 mph, it means very little at these speeds. There are bodies for pan-style cars that go at high speeds on tracks that provide downforce, but you gotta be haulin arse for it to really help.

[snowboi1289]

I'm sorry, but how slow xmods are, aerodynamics doesnt matter.

[rascusn3]

Good point, didn't think of the actual speed that these are going. they look so fast though. I guess it's cause they are so small.

[texan_idiot25]

Originally Posted by rascusn3

Good point, didn't think of the actual speed that these are going. they look so fast though. I guess it's cause they are so small.

Yup, at scale speed their doing 250 some-odd miles per hour. If you had them really scale, an xmod at 5 mph is doing over 100 mph scale speed.. and that's no fun (at 5 mph real speed)

[XMDrifter]

wonder if a to-scale wing and diffuser(including material thickness and material) wou'd actually produce to-scale downforce?

[texan_idiot25]

Originally Posted by XMDrifter

wonder if a to-scale wing and diffuser(including material thickness and material) wou'd actually produce to-scale downforce?

In theory, yes.

But mind you, material thickness of the car bodies for instance is thinner then a sheet of aluminum foil. It wouldn't stand much wind.

[italy.1677]

I got some gold leaf to use! LOL

[RedSXmodder]

Ummm...this car is meant to be aerodynamic, but still....with the holes and elecs sticking out...um...It can't help to much, lol. But this thing does see speeds of 30+ so, I guess it helps a little...

[ling427ttvette]

Even though like everyone has said, it doesn't matter.. I changed mine to probably be the most aerodynamic NSX you will ever see.







Everything is completely smooth. I don't drive it and won't be testing the new aerodynamics..

[XMDrifter]

i thought dimpled surfaces were the most aerodynamic(like golf balls)
ehh probably break your wing the first time you drove it if it was completely to scale.
nice nsx btw.

i'll just try this aerodynamics stuff for a bit

[texan_idiot25]

Originally Posted by XMDrifter

i thought dimpled surfaces were the most aerodynamic(like golf balls)
ehh probably break your wing the first time you drove it if it was completely to scale.
nice nsx btw.

i'll just try this aerodynamics stuff for a bit

Were not talking about golf balls. In a real car, a dimpled surface wouldn't provide a smooth air flow. Are any Jets, race cars, and land speed cars dimpled?

[bondo]

Originally Posted by texan_idiot25

Were not talking about golf balls. In a real car, a dimpled surface wouldn't provide a smooth air flow. Are any Jets, race cars, and land speed cars dimpled?

nope, they dont suffer the same g and centrifugal forces.
a golf ball hits naught to 200+MPH in 1/1000 of a second

not to mention the fact that the flight duration of a 350Yd drive is only 7-8 seconds.

golf balls do share a feature with the common truck.
the bed of a truck creates an inverted vortex witch is the same principal as the dimples on a golf ball.

[2wdpancar]

Originally Posted by snowboi1289

I'm sorry, but how slow xmods are, aerodynamics doesnt matter.

You do realize you CAN push an xmod 40mph on road right?
In my avatar is the same body that red used(unless it's the PN pan shell), jsut without anything hacked up.


That and the PN Racing pan shell are the most aerodynamic 1/28 shells I've seen as of today.
Lexan shells are lighter but some aren't as aerodynamic as these, my mini-z sticks to the ground like it's on rails with this shell.(helps with lots of downforce).

The only thing is that when you use these kind of bodes you need to keep in mind you will need to tweak the suspension(I'm not talking about radio shack springs, like shaving parks, sanding, and cutting springs), so you get good dampening from the springs, but it sits low when it is going faster(while not touching the ground).
The xmods DO have a higher center of gravity than some other 1/28 scale cars/trucks, so when using these bodies a few modifications will be needed to be done to get the shell to work at it's best(good suspension being my main point).

[XMDrifter]

dimpled tires would be more aerodynamic.
once, somebody made a racing bike with dimpled surfaces
but i see your point. guess i could try to slightly make my GTR a bit more aerodynamic cuz it's my race shell

[2wdpancar]

Originally Posted by XMDrifter

dimpled tires would be more aerodynamic.
once, somebody made a racing bike with dimpled surfaces
but i see your point. guess i could try to slightly make my GTR a bit more aerodynamic cuz it's my race shell

Ridgeless rims(like on iWaver/Kyosho Mini-Z) are better, not exactly more aerodynamic but help with traction, all leading down to aero dynamics somehow.
Xmods have a ridge, that not only decreases tire life(the ridge wears through the tire then you have to throw it away).
Ridgeless are flat, and then not only give the car a lower stance, but they increase tire life by a lot(compared to xmods)..dremeling or cutting those ridges off your wheels are not a bad idea.

[XMDrifter]

finished with underbody, mild diffusers, splitter, venturi effect generators in between the front and rear pairs of wheels. not really effective at the speed i usually drive at, but if i go faster, it will most likely work (and i'll have to change the splitter's material from posterboard to some type of thin aluminum)

the wing is the bodykit wing, but i beleive it is capable of some lift-negation due to its angle:
here's the pictures





rear venturi generator

front venturi generator

need a new headlight lens:


if you don't know what the venturi effect is i have a link some info:
http://www.e30m3performance.com/myth...er/venturi.htm
http://www.e30m3performance.com/myth...r/splitter.htm

[zippo855]

looks good. maybe an alluminum can would do the trick? its pretty thin and cheap.

[XMDrifter]

well it's really easy to do. i finished the whole underbody thing in like, 10 minutes
i can make some templates if you'd like to take some of the guesswork out if anybody else wants to try this

[FinalGear]

Originally Posted by rascusn3

Does anyone change their Xmods to make them more aerodynamic? things like removing the rear view mirrors, making the bottom of the car as flat as possible, lowering the body,.... I think that it would definantly make the car faster by a bit. I was considering doing this on my new car when it arrives. I was wondering if it has been done and, if so, how much of a difference it makes.

Tear into parts:
Revell, Tamiya, Jada, Fujimi Mokei, (others) just stay within 1:24 or 1:25 scale model and you'll be fine.