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COT "Show" wing becomes a "Go" wing
13 Attachment(s)
This may have been done before - I know Keith had indicated he was going to try it, but I think he gave up...?
Anyway, I can now verify that YES - this CAN be done. It is possible to convert a Nascar COT Show wing to work on a race car, and it is safe to at least 130mph and probably a lot faster, judging from my experience today. Like all my ghetto work (see Tupperware airbox for example), it isn't pretty or perfect. But it works. I took 2.5 seconds off my PB at Sydney Motorsport Park GP circuit today and set a new class lap record by a full second, and all this on R spec semi slicks (class rules allow slicks). The wing works, and bloody well. so... Pics are in order. I started with this cheap and nasty COT show wing. I cut the stupid "left turn only" end plates off: https://www.miataturbo.net/attachmen...ine=1463312458 https://www.miataturbo.net/attachmen...ine=1463312458 https://www.miataturbo.net/attachmen...ine=1463312458 What I had was 1400mm (56") wide: https://www.miataturbo.net/attachmen...ine=1463312458 View inside the wing - it's just a CF shell but quite strong: https://www.miataturbo.net/attachmen...ine=1463312458 This pic shows the way the mounts are fibreglassed into the wing - weak... But it's a show wing after all... https://www.miataturbo.net/attachmen...ine=1463312458 Mucho 4.8mm alloy rivets added to reinforce each mount: https://www.miataturbo.net/attachmen...ine=1463312458 https://www.miataturbo.net/attachmen...ine=1463312458 Time for some surfboarding. Hardwood strips for laminating a foam core: https://www.miataturbo.net/attachmen...ine=1463312458 https://www.miataturbo.net/attachmen...ine=1463312458 They run the full length of the wing: https://www.miataturbo.net/attachmen...ine=1463312458 https://www.miataturbo.net/attachmen...ine=1463312458 I'm sure you can buy this stuff, or something better, at Home Depot racing. For the Aussies, this came from Bunnings: https://www.miataturbo.net/attachmen...ine=1463312458 |
13 Attachment(s)
Bloody messy job. I used rubber hose on the end of the nozzle to get it right inside the wing. Fill the centre section first, then the front and rear - otherwise your spars will press out of place:
https://www.miataturbo.net/attachmen...ine=1463313202 For end plates - I ended up both screwing and Sikaflexing these in place, and used 4 screws per mount in the end to make sure they would hold: https://www.miataturbo.net/attachmen...ine=1463313202 https://www.miataturbo.net/attachmen...ine=1463313202 https://www.miataturbo.net/attachmen...ine=1463313202 6mm Rivnuts: https://www.miataturbo.net/attachmen...ine=1463313202 Alucobond end plates - had some scrap lying around from a trailer build a few years ago: https://www.miataturbo.net/attachmen...ine=1463313202 Endplates fitted. I ended up Sikaflexing the endplates on, as well as using 6mm hardware, after a friend of mine lost an end plate off of his wing last year... Can't be too careful at 120+mph https://www.miataturbo.net/attachmen...ine=1463313202 https://www.miataturbo.net/attachmen...ine=1463313202 Sizing up some class-legal mounts (using scrap plywood to get the wing in the right spot): https://www.miataturbo.net/attachmen...ine=1463313202 https://www.miataturbo.net/attachmen...ine=1463313202 Rolled 8mm alloy mounts - similar to FM design: https://www.miataturbo.net/attachmen...ine=1463313202 Bottlescrew AoA adjustment: https://www.miataturbo.net/attachmen...ine=1463313202 Maximum sized front splitter allowable under class rules - to try and balance the wing: https://www.miataturbo.net/attachmen...ine=1463313202 Ended up at around 1 degree AoA. Phenomenal speed. Still working on low vs. high speed balance but it is clear we are on a winner. |
Nice work!
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nice job!
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Originally Posted by zossy1
(Post 1331595)
Endplates fitted. I ended up Sikaflexing the endplates on, as well as using 6mm hardware, after a friend of mine lost an end plate off of his wing last year... Can't be too careful at 120+mph.
. Ended up at around 1 degree AoA. Phenomenal speed. Still working on low vs. high speed balance but it is clear we are on a winner. Well done, both in the build and putting it to work!! |
T2 and T8 were dicey until tyre temps came up, but that's normal. The front splitter was quite effective at most speeds in balancing the wing out at that shallow AoA angle, but as usual with my car, under steer on cold tyres was evident.
if I want to run more AoA, I'm going to have to get more aggressive with my front air dam. Maybe give the Crusher front another try, this time with a front lip (more like Ryan's car). Stop gap solution will be to add some canards to the existing front... |
What's the chord length on one of these wings?
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That looks really good. Nice work.
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Nice job, that's making lemonade from lemons!
Originally Posted by Efini~FC3S
(Post 1331817)
What's the chord length on one of these wings?
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