I wouldn't trust fitment of anything from DarwinPro. I've also only seen 1 P1 style hood that fit right which was custom made for a 570 (I can point you to them), but I've never seen a functional one. I'm not sure what it would be functioning exactly, there is no radiator in there.
will this affect the car Aerodynamics ?
i dont think this functional P1 look alike hood, any one tried it ?
ffperformance.co
DarwinPro 2011-2014 McLaren MP4-12C P1 Style Carbon Fiber Hood - Function Factory Performance
Made to order: Shipped by container and has an ETA up to 4-5 months
ffperformance.co
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I know its not functional this after market ( holes closed) . in P1 these holes are opening for the radiators and air flow
my question if it installed in mp4 or 650 , will it effect the car down force aerodynamics etic..
my question if it installed in mp4 or 650 , will it effect the car down force aerodynamics etic..
At some point, yes, it will. There is flow being disrupted in that spot in the capacity that there is a void it's going over and a raised lip causing deflection. Generally speaking, the people that buy them are just cruising anyway so it likely won't effect the performance impression.
Aha! The plot thickens!thank you kevin
Signature updated, and there is a point being missed in what I said. I'm not talking about flow through, I'm talking about flow OVER. Air travels around a surface and having a void under that surface can generate a vortex that creates dirty air, or simply changes the air speed. Any time a shape is changed it can effect everything behind it. For example, the bubble in 12C headlights is to change the direction of the air for the rest of the way back on the car. You change the direction, you change downforce potentially. It's possible to change the bonnet and effectively lighten the front end at speed, causing worse mechanical grip IE turning. Maybe it does nothing at all, don't know unless it's wind tunnel tested (or at least fluid dynamics simulated) which exactly nobody does in aftermarket despite what 1016 tell you.thank you kevin
from this picture the AIR will flow from underneath to cool the radiators then flow over the roof , i dont think you will have air flow if they are closed
View attachment 232183
assuming it fits correctly ( probably will not),it won't change a thing at any speed the mp4 will reach but can be used as windshield washer if it's rained recently.
What makes you think there is absolutely no air being passed on the bonnet surface at any speed? Remember 12C's top speed is faster than a 570, which is still over 200 MPH. I can tell you those pesky underbody strakes are doing things at 100 MPH, I have no doubt the bonnet does things too.assuming it fits correctly ( probably will not),it won't change a thing at any speed the mp4 will reach but can be used as windshield washer if it's rained recently.
I can confirm these underbody strakes they realy work , mine broke one time i felt it, car not stable over 100 mphWhat makes you think there is absolutely no air being passed on the bonnet surface at any speed? Remember 12C's top speed is faster than a 570, which is still over 200 MPH. I can tell you those pesky underbody strakes are doing things at 100 MPH, I have no doubt the bonnet does things too.
not much air over the hood
who Exactly said there is no air passing over the bonnet and who mentioned 570?What makes you think there is absolutely no air being passed on the bonnet surface at any speed? Remember 12C's top speed is faster than a 570, which is still over 200 MPH. I can tell you those pesky underbody strakes are doing things at 100 MPH, I have no doubt the bonnet does things too.
The fake air vents on the darwin won't change a thing at any speed as they are located in a low pressure zone and don't vent anyway since they are blocked off.
if you want proof,get a hood and fill the cavities with water and see it being sucked out the faster you go.
strakes are in a high pressure area so you're talking apples but why even talk about those..........op is inquiring about hood .
I’m installing the hood and going to the track next week ..
I needed some experts advise , I was afraid going to change the aerodynamic in high speed..
Since you have good knowledge where high and low pressure areas , what about this diffuser ?
More or less downforce ?
Sent from my iPhone using Tapatalk View attachment 232205
View attachment 232206
I needed some experts advise , I was afraid going to change the aerodynamic in high speed..
Since you have good knowledge where high and low pressure areas , what about this diffuser ?
More or less downforce ?
Sent from my iPhone using Tapatalk View attachment 232205
View attachment 232206
I'm not sure this is a great point of reference as it's essentially 2D and suggests no air is in front of the driver or passenger (which if you use your wiper fluid at high speed you'll see what it does, quite interesting). But, in the point of what it's making, it's also suggesting that air dead center (where the deformation in the bonnet is) is exactly where the air is going. It doesn't have to be a lot to make a difference, it has to be anything to make a difference.I can confirm these underbody strakes they realy work , mine broke one time i felt it, car not stable over 100 mph
not much air over the hood
View attachment 232188
will this affect the car Aerodynamics ? says no 12C will reach a speed it matters, I was kindly pointing out the 12C is faster than other models. Every post suggesting it won't matter is suggesting there is no air passing over the bonnet. Yes, the bonnet is a lower pressure area, but changing the shape changes laminar flow. I've seen several videos of putting the little fin things on the roof of a car at the back to break up the air for better drag coefficient and placement of those, inches further forward or back, gave a different result.who Exactly said there is no air passing over the bonnet and who mentioned 570?
The fake air vents on the darwin won't change a thing at any speed as they are located in a low pressure zone and don't vent anyway since they are blocked off.
if you want proof,get a hood and fill the cavities with water and see it being sucked out the faster you go.
strakes are in a high pressure area so you're talking apples but why even talk about those..........op is inquiring about hood .
The only way to know what it's going to do is to test it. The diffuser manages the air coming from the bottom of the car out the back, the shape of that makes a big difference at speed. As a matter of fact, those strakes at the rear of the car is for directing air into the diffuser.I’m installing the hood and going to the track next week ..
I needed some experts advise , I was afraid going to change the aerodynamic in high speed..
Since you have good knowledge where high and low pressure areas , what about this diffuser ?
More or less downforce ?
Sent from my iPhone using Tapatalk View attachment 232205
View attachment 232206
I’ve been high speeds with the top down many times as I’m sure hundreds of mclaren owners have been as well.
It’s definitely not as enjoyable an experience as top up, but at no point did it feel unsafe. I feel like that has to be much more of an air disruption than the Darwin hood.
But that’s just my unprofessional opinion.
It’s definitely not as enjoyable an experience as top up, but at no point did it feel unsafe. I feel like that has to be much more of an air disruption than the Darwin hood.
But that’s just my unprofessional opinion.
I would agree, it's a giant void, but also proves the point about laminar flow on the top side of the car. In either case it may be minor, maybe even barely measurable, but a result is a result.I’ve been high speeds with the top down many times as I’m sure hundreds of mclaren owners have been as well.
It’s definitely not as enjoyable an experience as top up, but at no point did it feel unsafe. I feel like that has to be much more of an air disruption than the Darwin hood.
But that’s just my unprofessional opinion.
sorry didn't upload properlyI’m installing the hood and going to the track next week ..
I needed some experts advise , I was afraid going to change the aerodynamic in high speed..
Since you have good knowledge where high and low pressure areas , what about this diffuser ?
More or less downforce ?
Sent from my iPhone using Tapatalk View attachment 232205
View attachment 232206
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815.8 KB Views: 8
Without wind tunnel testing it, I can't say if it's better or worse. It's very similar shape, looks like the middle is opened up and the guides in the middle are present vs stock. I don't see it hurting performance unless the middle of the car really wants that area lower like stock. Generally speaking, the more effective diffusers have greater area guiding (as that one does) but also sits lower, which that one is not.sorry didn't upload properly View attachment 232217
My question is why spend the extra money on kits that have not been tested when you know the factory has already done extensive testing? If its looks I certainly can appreciate it. But if you are looking for kits that are functional and also look good, find a kit company that can show you their aero testing. Because making it look good is drastically different from making it even more aerodynamically balanced and functional.
NOBODY tests them, 1016 claims they do and don't. Now I know what you're thinking, bold claim, right? Well 2 people in the carbon biz confirmed and weren't surprised when I told them about my interaction with Peter when I asked for the test data on a 720 kit. Long story short, he went from conditions to refusing and went as far as saying he'd show me for $95,000. Any company doing actual testing would display that proudly on their website as advertising proof it's a superior product, for $0.My question is why spend the extra money on kits that have not been tested when you know the factory has already done extensive testing? If its looks I certainly can appreciate it. But if you are looking for kits that are functional and also look good, find a kit company that can show you their aero testing. Because making it look good is drastically different from making it even more aerodynamically balanced and functional.
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