{"product_id":"tt1","title":"TT1","description":"\u003cp\u003eThe Thompson Twin gives you the surface area of a small keel, in a classic upright-twin template with modern hydrodynamics for less drag and more hold through turns. \u003c\/p\u003e\n\u003cp\u003eThe bottom two-thirds of the fin features the Apogee 3 foil designed by Wright Brothers Wind Tunnel director and MIT professor Mark Drela for his gliders.\u003c\/p\u003e\n\u003cp\u003eEvery other example of using airfoils on twin-fins has involved concave on the inside surface. This foil is different in that it uses a tiny fraction of convex.\u003c\/p\u003e\n\u003cp\u003eThe reason we went with it is the fins are one third thicker than normal twins that are just designed to fit onto Futures bases. Very few fin-designers realise it but extra thickness can be more effective than adding an inside foil when it comes to delaying water-flow separation and giving you more lift and hold through turns. \u003c\/p\u003e\n\u003cp\u003eObviously when you go thicker you have to offset the extra drag you'll get when running down-the-line - which we did by adding the Apogee 3 glider foil. Glider foils do exactly what they're designed to - they glide perfectly.\u003c\/p\u003e\n\u003cp\u003eThrough the top third of the fin as the foil straightens, so do the fins.\u003c\/p\u003e\n\u003cp\u003eAnd the tips have 0.9 degrees less toe-in than the base. This points the thinner, straighter foil more up and down your board. And that lets us ensure there's still a healthy amount of flex and twang in the tips.\u003c\/p\u003e\n\u003cp\u003eThe thicker bottom on the fin, paired with the solid G10 fibreglass construction gives a feeling that's smoother with more glide - a lot like traditional glass-ons. G10 features double the fibreglass to resin ratio of traditional polyester panel and the resin is harder as it's cured under high temperatures - instead of using a catalyst.\u003c\/p\u003e\n\u003cp\u003eBe warned these fins are heavier than standard twins but it works when you're trying to create a glidey glass-on feel. Their massive surface area also means they deliver a huge amount of drive.\u003c\/p\u003e\n\u003cp\u003eThese fins were designed to let you get the benefits of toe-twist on mid-length and larger twins which usually have their fin-boxes set a bit straighter.\u003c\/p\u003e\n\u003cp\u003eThey work best at a toe-in between 1\/8\" and 3\/16\" and lean towards bigger, more powerful surfers due to their large surface area. To me these are the types of twins the 1970s twin-fin pioneers would have shaped if they had access to modern fluid dynamics.\u003c\/p\u003e\n\u003cp\u003eIf you don't know what toe-in setting your fins are at, ask your shaper - or reach out and we'll help you measure it. \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eDepth: 6.2 inches (157.48mm)\u003c\/p\u003e\n\u003cp\u003eBase: 5.44 inches (138.26mm)\u003c\/p\u003e\n\u003cp\u003eCant: Six degrees\u003c\/p\u003e\n\u003cp\u003eSurface area: 25.9 square inches\u003cbr\u003e(16,728mm squared)\u003c\/p\u003e\n\u003cp\u003eThickest point: One third of an inch (quarter inch is standard on production fins)\u003c\/p\u003e\n\u003cp\u003eToe-twist: 0.9 degrees\u003c\/p\u003e\n\u003cp\u003eMaterial and colour: Black G10\u003c\/p\u003e","brand":"Thompson Fin Co.","offers":[{"title":"Default Title","offer_id":48139184472219,"sku":null,"price":160.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/6646\/5691\/files\/TT1_template_89f3db17-bb1c-41ab-a018-d88b25f0653b.jpg?v=1786502670","url":"https:\/\/thompsonfinco.com\/products\/tt1","provider":"Thompson Fin Co.","version":"1.0","type":"link"}