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620R Canards

1335 Views 33 Replies 18 Participants Last post by  Magnum
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I've always liked the front canards on the 620R they seem to add a nice little visual touch of track aggression and so I looked to source a pair for my 600LT. As to be expected the price from Mclaren was astronomical at around £3K+ so on to a new journey of finding an alternative.

Mclaren 620R Canards


Im not going to go into the aero dynamics of this item, I think such things are irrelevant without data but given there used on both the 620R and 570S GT4 there must be something vs nothing. However for me the intent was more visual vs expecting any major downforce improvement. Knowing the GT4 items where often the most popular route folks would go for the part I ordered some but was quite disappointed.

Mclaren 570s GT4 Canards


The item was simply a piece of bent carbon fibre sheet, with poor fitment, and too angular for an OEM+ look, for a GT4 it makes sense but wasn't suitable for what I wanted for my 600LT. I was not going to pay the £3K+ Mclaren wanted and so I worked with a friend to start 3D scanning the car to find a solution.



3D scanning the car allows us to get a perfect fitment with the contour of the car. Using the GT4 canard to get a feel for the curvature of the actual canard we could then start the re-design. The first design received some improvements, specifically more bevel on the outer edge to be more OEM+ and also indentation of the fixing points to make them less visual which you can see in the side by side picture above.



The final design had a thickness and bevel which for me met the design needs of being as close to OEM+ and style of the 620R possible. For prototyping 3D printing was used with a higher grade material than usual.

Mclaren 620R 600LT Canards


Mclaren 620R 600LT Canards


Fitment was great thanks to the 3D scanning. Installation simply requiring three riv nuts per side which is more a case of getting over the fear of drilling into bodywork vs actually being a complex installation process.

Mclaren 620R 600LT Canards


Testing was also very successful with a super secure fit even down high speed runs down Hanger Straight at Silverstone GP :)

Mclaren 620R 600LT Canards


Now onto creating a carbon fibre option which truly replicates the original design brief of getting close to the 620R quality and aesthetics. Instead of creating a new mould, which is high cost, carbon layering over the part was the preferred option as this keeps costs down and ensures the aesthetic needs are still met.

Mclaren 620R 600LT Canards


Here's a nice comparison of the carbon vs non carbon.

Mclaren 620R 600LT Canards


Note the weave direction, to retain the design ethics of the 620R canards and the direction of OEM carbon packs (front splitter), each canard was layered with the correct weave direction per side to match to OEM. Super stoked with the result!
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Lovely job , surly wont they 3 m tape stick on save drilling ? Did you do a template to get them in the perfect spot? How much did they cost in the end ?
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Great job, they look very well done
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Lovely job , surly wont they 3 m tape stick on save drilling ? Did you do a template to get them in the perfect spot? How much did they cost in the end ?
Totally would have gone the tape/adhesive route vs riveting a OEM bumper
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Totally would have gone the tape/adhesive route vs riveting a OEM bumper
Do you think tape/adhesive would hold up to the downforce generated? I would be concerned they would fly off with only tape.
Do you think tape/adhesive would hold up to the downforce generated? I would be concerned they would fly off with only tape.
Barely any downforce generated. I was really generous with the C_L @ 2.0 and calculated approximately 8 pounds downforce per canard at 150 mph. There's just barely any surface area
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can you make one for the 720S?
I'd need access to a 720S to do a scan. If I get my hands on one later this year then maybe I could look to make a design.
Barely any downforce generated. I was really generous with the C_L @ 2.0 and calculated approximately 8 pounds downforce per canard at 150 mph. There's just barely any surface area
Good to know. What is C_L ? Im in the UK so unfamiliar with that abbreviation.
I've had someone also not wanting to riv nut so they'll be sticking them on and then using blanking plugs for the hole as per the pic.
Wood Bumper Automotive exterior Automotive lighting Tints and shades
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Good to know. What is C_L ? Im in the UK so unfamiliar with that abbreviation.
Coefficient of lift. 2.0 is pretty high for a cambered high lift single element airfoil. You'll would have reduced values because it's 3D (not a 2D airfoil approximation). Also, leading edge is not optimized, it's pretty much constant thickness with a small radiused leading edge (probably like that on the racecar too, though)

Let's just say your canards are not this XD in terms of planform area

Nice design / finish. Regarding the 3m tape, if you use VHB 3M Tape you will be fine and not have to drill the lower cheek for installation. Ive had the GT4 canards on my 570s for 4+ years using this same VHB tape and have done multiple 120+ MPH pulls without any issues.
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Do you think tape/adhesive would hold up to the downforce generated? I would be concerned they would fly off with only tape.
Yes, the appropriate type of double sided tape, applied correctly will hold for virtually forever in this case.
Thanks for the comments guys ref the 3M tape, knowing others have used with good results is positive. It should help those who wish to use tape vs rib nuts.
Now that you've teased us a bit. Are you planning to make any for us poor saps?
:)
Do you think tape/adhesive would hold up to the downforce generated? I would be concerned they would fly off with only tape.
I had mine 3M on for 3 years.....they held up, but towards the end started to pull away. It won't just let go.
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Now that you've teased us a bit. Are you planning to make any for us poor saps?
:)
If folks are interested ping me a PM as im likely to do a batch of carbon and non-carbon as a few UK owners also interested.
Awesome job! I've been shopping for canards just this week. I would probably order some, particularly if they outperform these in quality and are substantially less than the OEM. What's your estimate on cost per carbon unit in your batch?
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