{"title":"SONNTAG SHOP","description":"","products":[{"product_id":"sonntag-sl-pro","title":"SONNTAG SL-PRO","description":"\u003ch4 style=\"text-align: center;\"\u003e\u003cstrong\u003eNeed a size or box type we do not have in stock?\u003c\/strong\u003e\u003c\/h4\u003e\n\u003ch4 style=\"text-align: center;\"\u003e\u003cstrong\u003eWe can order from Sonntag and, depending on the season, get fins relatively quickly.  Write to us at info@windforce.ca or call 1 (514) 504-5925\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIntroduction\u003c\/strong\u003e\u003cbr\u003eThe SL-pro is our latest competition slalom fin designed to win races. We tested and tuned the carbon layups over the last 12 month in our team with Ben van der Steen giving the key input for testing under slalom competition conditions. General fin performance and speed aspects were covered by Peter de Wit, Twan Verseput, Patrick van Hoof and Fabian Blanke.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDesign \u0026amp; Technology\u003c\/strong\u003e\u003cbr\u003eWe developed new outlines allowing us to fine tune the fin’s characteristic for low drag and high efficiency. The carbon layups finally shown best performance have very low geometric twist and a medium stiff bending curve with a bit stiffer mid2tip stiffness. The profile is specifically designed for the SL-pro and offers low drag at small AoA by a thinner and sharp leading edge section still giving enough grip to accelerate seamless after the jibe from lower speeds.\u003cbr\u003eDuring the development phase we recognized restrictions with those carbon fiber types we use for our other fin models. This is linked to the thinner fin profile and the narrow outline also for the longer versions. Such design requires carbon filament types with higher E-Module and more strength to co-op with the high forces. To solve this issue we got a supplier involved into the development to produce for us a special, very thin and strong carbon material in aerospace+ quality. This material also meets the requirement of precise fiber orientation with very small angular misalignment\/tolerance.\u003cbr\u003eCompetition sailors are quite sensitive even to very small variations in the fin’s characteristic, especially related to the geometric twist. To deliver constant quality we test the SL-pro on our new 4-axis CNC test system that also allows us to measure the profile accuracy by precision laser measurements . Bending and geometric twist data are acquired by multi-point measurements with automated data analysis and comparison to the reference values.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSailing Characteristic\u003c\/strong\u003e\u003cbr\u003eThe SL-pro induces stable vertical lift for sailing the board over the complete length in a high position “on” the water. Our test team calls this characteristic the “foiling” mode. Here the fin takes a significant portion of that load the board is normally carrying.\u003cbr\u003eThe SL-pro generates a crispy force-feedback allowing the sailor to feel the flow situation around the fin. Although the layups are quite powerful the usable range of one fin size is huge and the fin offers very good control. Control is also a common remark of our test team when trying to describe the jibing performance. Due to the high amount of vertical lift the board is also “foiling” throughout the jibe making a very good exit with usable fin power on the new tack.\u003cbr\u003eThe acceleration in the gusts is excellent and the board stays in a stable position without the intention neither to push the front down nor to lift the nose in an uncontrollable way.\u003cbr\u003eThe SL-pro can add 1-2 knt speed on all courses compared to many other competition slalom fins. The speed potential of the SL-pro was proofed by Twan Verseput getting 2018 Speed World Champion on this model as well as Patrick van Hoof winning the Weymouth Speed Week in 2018 both in choppy conditions.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003e\u003cstrong\u003eThe SL-pro is available in length of 28-48cm and Tuttle and Deep-Tuttle bases.\u003c\/strong\u003e\u003c\/em\u003e\u003c\/p\u003e","brand":"Sonntag","offers":[{"title":"32 \/ Tuttle","offer_id":41558123020483,"sku":"SLPRO32T","price":550.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0504\/6924\/1027\/products\/Untitleddesign_8.png?v=1754508739"},{"product_id":"sonntag-sl-weed","title":"SONNTAG SL-WEED","description":"\u003ch4 style=\"text-align: center;\"\u003e\u003cstrong\u003eNeed a size or box type we do not have in stock?\u003c\/strong\u003e\u003c\/h4\u003e\n\u003ch4 style=\"text-align: center;\"\u003e\u003cstrong\u003eWe can order from Sonntag and, depending on the season, get fins relatively quickly.  Write to us at info@windforce.ca or call 1 (514) 504-5925\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eThe SL-Weed was developed as a true weed fin with progressive rake helping to shed off the weed efficiently. The blade is shifted 3 cm in front of the base so that it’s easier to use the standard setting of the board for upright fins. Bending and twist curve are the same as for a slalom fin, so the rider is able to fly the board on the fin. \u003c\/p\u003e\n\u003cp\u003eThe sizes of the SL-Weed are adjusted to sail stable and fast with medium slalom or freerace boards (67cm) up to large slalom or freerace boards (85cm).\u003c\/p\u003e\n\u003cp\u003eThe fin has a progressive leading edge curve causing shed-off forces that gets higher as more the weed moves downwards in tip direction. We can adjust the rake as requested, but we found very good performance with 40° rake close to the base. At this (base) rake the fin has around 45° rake in middle and 48° 20mm from the tip related to a 360mm (vertical) length.\u003c\/p\u003e\n\u003cp\u003eWe use a profile that is based on the very well approved SL-pro design also showing in this new model excellent performance.\u003c\/p\u003e\n\u003cp\u003eThe fin creates sufficient vertical lift by just very low amount of geometric twist. The board’s nose position is in a medium position giving good control and not causing a sticky feeling when sailing on very flat water.\u003c\/p\u003e\n\u003cp\u003eThe SL-Weed can be produced in sizes of 30 to 36cm with Tuttle base.\u003c\/p\u003e","brand":"Sonntag","offers":[{"title":"36 Power Box \/ Weed","offer_id":51085710000441,"sku":"SLWEED36PB","price":565.0,"currency_code":"CAD","in_stock":true},{"title":"30 Tuttle \/ Weed","offer_id":51671456481593,"sku":"SLWEED30T","price":565.0,"currency_code":"CAD","in_stock":false},{"title":"31 Tuttle \/ Weed","offer_id":51671456514361,"sku":"SLWEED31T","price":565.0,"currency_code":"CAD","in_stock":false},{"title":"32 Tuttle \/ Weed","offer_id":51671460020537,"sku":"SLWEED32T","price":565.0,"currency_code":"CAD","in_stock":false},{"title":"33 Tuttle \/ Weed","offer_id":51671460053305,"sku":"SLWEED33T","price":575.0,"currency_code":"CAD","in_stock":true},{"title":"34 Tuttle \/ Weed","offer_id":51671460086073,"sku":"SLWEED34T","price":575.0,"currency_code":"CAD","in_stock":false},{"title":"35 Tuttle \/ Weed","offer_id":51671460118841,"sku":"SLWEED35T","price":575.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0504\/6924\/1027\/products\/Untitleddesign_9.png?v=1754508710"}],"url":"https:\/\/windforce.ca\/collections\/sonntag-products.oembed","provider":"WindForce Sports","version":"1.0","type":"link"}