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There are no guarantees in life but would you wear a raincoat outside if someone said there would be a 1% chance of rain?
I had a valley plate leak on my ISF....it's not so "dreaded"....lol.
But back on topic. I am intrigued by how you would calc downforce on our wings. I think I saw a video on a wind tunnel with the spoiler up and it didn't show any airflow below the wing. Of course it's just a prom video from Lexus so who knows if that was an accurate wind tunnel vid.
There are no guarantees in life but would you wear a raincoat outside if someone said there would be a 1% chance of rain?
I had a valley plate leak on my ISF....it's not so "dreaded"....lol.
But back on topic. I am intrigued by how you would calc downforce on our wings. I think I saw a video on a wind tunnel with the spoiler up and it didn't show any airflow below the wing. Of course it's just a prom video from Lexus so who knows if that was an accurate wind tunnel vid.
lol talk about a false equivalence. Also i never said i would get the warranty due only to the TVD (the whole TVD discussion had to do with a member stating he was 100% sure nothing woudl go wrong with the TVD)...i listed several things that can potentially go wrong and why buying insurance might be worth it.
The valley plate leak is a PIA so yes its dreaded...its not a easy fix and can cost up to 2k at the dealership. RR Racing has also mentioned that they believes if its not caught early enough it could cause compression issues in the cylinders but whatever dude.
lol talk about a false equivalence. Also i never said i would get the warranty due only to the TVD (the whole TVD discussion had to do with a member stating he was 100% sure nothing woudl go wrong with the TVD)...i listed several things that can potentially go wrong and why buying insurance might be worth it.
The valley plate leak is a PIA so yes its dreaded...its not a easy fix and can cost up to 2k at the dealership. RR Racing has also mentioned that they believes if its not caught early enough it could cause compression issues in the cylinders but whatever dude.
You know I’ll delete my post. I’ll keep this on topic.
but you haven’t heard the last from me scooby do! I’lll get you and your friends too!
Last edited by cvt; Oct 5, 2022 at 11:11 PM.
Reason: Butts
If it fucntions as. a spoiler, then theres no downforce. If it functions as a wing there is a downforce but it's not very much.
So the question on this thread is how much downforce. Do you have your own calc of what that is? So far the answer presented was 40lbs at 80mph. Do you agree? If not why?
i’m really curious…I get the air being shown on the vid shows it going over the wing but is that sufficient enough to produce any real downforce or is it just creating drag?…I dunno…
I don't have a number because there are a lot of unknowns for example: area of wing (sq ft), coefficient of lift (which is dependent on the shape, speed, wing angle, turbulence, etc.). IMO, i think 50-100 lbs at 80mph is reasonable number.
Originally Posted by cvt
So the question on this thread is how much downforce. Do you have your own calc of what that is? So far the answer presented was 40lbs at 80mph. Do you agree? If not why?
i’m really curious…I get the air being shown on the vid shows it going over the wing but is that sufficient enough to produce any real downforce or is it just creating drag?…I dunno…
When you were a kid, did you ever stick your arm out the window while Pa was driving and make your hand go up and down by changing the angle of your hand in the breeze? If you look at the rudder on an airplane or boat and see it as a flat plate (like our rear pop up) and see how it causes the stern (rear) of the machine to change direction? That's what is happening. The "flap" is merely changing the direction of the air, action-reaction (Newton), wind goes up= rear goes down. Newton's 3rd law. The pop up has no camber so merely flat plate deflection, no "sucking".
When you were a kid, did you ever stick your arm out the window while Pa was driving and make your hand go up and down by changing the angle of your hand in the breeze? If you look at the rudder on an airplane or boat and see it as a flat plate (like our rear pop up) and see how it causes the stern (rear) of the machine to change direction? That's what is happening. The "flap" is merely changing the direction of the air, action-reaction (Newton), wind goes up= rear goes down. Newton's 3rd law. The pop up has no camber so merely flat plate deflection, no "sucking".
lol...here it is straight from ScientificAmerican...they explain why both newtons and Bernoulli's laws come into affect To say: "It works (what there is of it) by Newton's laws not Bernoulli's" is inaccurate. It works by way of both.
If the flap had camber, I'd mebe agree. But my car's flap is just a flat plate. Nothing but stall on the back side. You can even see that in the video showing the airstream. You do notice that the kid's "wings" have camber, right? Top side is humpier than the bottom?
If the flap had camber, I'd mebe agree. But my car's flap is just a flat plate. Nothing but stall on the back side. You can even see that in the video showing the airstream. You do notice that the kid's "wings" have camber, right? Top side is humpier than the bottom?
Most car wings are not flat on the bottom,,,they have a belly...its hard to tell with the RCF wing because there isn't much clearance to see. The track edition wing might give you a better idea. I do agree that if its a flat surface on both top and bottom then Bernoulli's law does not come into affect.
Why don't you just go and activate the wing on your car and see?
What I'm saying is that its hard to see if the bottom has a belly or if its straight. Even in the up position there isn't much clearance to see the profile on the bottom side...I will go take a look later today.
If you look at most bigger wings (like on the TE) youll see there will be a concave side and a convex side to the wing.
From the video it looks like the wing certainly does something with the air flow. This is a street car after all, so the actual downforce may not be a huge amount, but it's got to be more than zero.
The duck tail shape of the TRD CCSP wing is interesting as well. It definitely has a more pronounced scoop and is claimed to provide some downforce even when down.
Shame on all of you who use the spoiler!!! By using it, gas milage goes down!
So, agree with all those "save the planet" groups and turn it off, and keep it off!!
