Yes, 1:12 has the best aerodynamic RC car!! Why? Can you see how it looks like? Think about it! Imagine it! Get it? The answer is..... it's actually a diffuser! Yes, the whole car body shape ac ...
binary 發表於 2010-2-26 22:14
But I thought it's quite different, as in a real car, majority of the air flows underneath the diffuser whereas in a wedge shape rc body, the air flows ontop of the diffuser shape?
Of course it's not 100% identical to what a real car's diffuser is doing, but air still coming out from the rear end of 1:12 car underneath (or inside) the body shell, however since the car is so close to the ground, air has to come from (and suck into) the bottom of the chassis very quickly to become a low pressure area.
But I thought it's quite different, as in a real car, majority of the air flows underneath the diffuser whereas in a wedge shape rc body, the air flows ontop of the diffuser shape?
defcone 發表於 2010-2-26 22:18
i think 1:12 / 1:8 body shell provided the best aerodynamics because of its wedge shaped outlook. When air is pushed to the body, it gets deflected upward and according to Newton's 3rd law, it generates a reaction force pushing the body and thus the car downwards to the road.
Diffuser works not because of its wedge shape. It works because of the channels underneath. Air moves faster through these slots and thus help sucks air out from the underneath the car. With lower air pressure underneath, the car is thus sucks to the ground and generates more grip.
Diffuser works better with a smooth underbody. I doubt how much effect the diffuser can actually generate in an RC F1 car. Any suggestions?
Just my 2 cents. Feel free to correct if I'm wrong.
I guess it is to feed in more fast-flowing air underneath the wing's main profile, and hence increase downforce.
Well, but bare in mind that it is just the theory stuff... whether it has significant effect on the Protoform Speed 6 rear wing, I am not quite sure..... and have never compare them too, I cut out those holes in my every speed 6 body... =P
binary ching, your thorough analysis is very much appreciated kudos goes to you!! regarding the front and rear wings in 1:10 F1, agree that they are there just to act as the bumpers.. , while in the real world they are soooo fragile that they will fall apart even with the lightest collison. i think the downforce generated by 1:10 F1 wings is negligible.
binary ching, your thorough analysis is very much appreciated kudos goes to you!! regarding the front and rear wings in 1:10 F1, agree that they are there just to act as the bumpers ...
newkid 發表於 2010-2-27 16:17
Absolutely!! Wings in 1:10 F1 acts as bumper more than anything else as aerofoil wings won't work in this scale! Moreover, I really doubt that these scaled wings really has aerofoil design or indeed it's just a piece of symmetrical plastic!
binary ching, your thorough analysis is very much appreciated kudos goes to you!! regarding the front and rear wings in 1:10 F1, agree that they are there just to act as the bumpers ...
newkid 發表於 2010-2-27 16:17
Diffuser works not because of its wedge shape. It works because of the channels underneath. Air moves faster through these slots and thus help sucks air out from the underneath the car. With lower air pressure underneath, the car is thus sucks to the ground and generates more grip.
swkchow 發表於 2010-2-26 23:45
樓主: gtimax
樓主
kudos goes to you!! regarding the front and rear wings in 1:10 F1, agree that they are there just to act as the bumpers.. , while in the real world they are soooo fragile that they will fall apart even with the lightest collison. i think the downforce generated by 1:10 F1 wings is negligible.
