{"title":"Sprindex Adjustable Springs","description":"\u003cp\u003e\u003cspan\u003eSPRINDEX ALLOWS FOR TOOL-FREE, EASY ADJUSTMENT OF YOUR COIL'S SPRING RATE.\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eAdjusting your shock's spring rate can profoundly improve your bike's handling and suspension. In fact, you may find yourself using different spring rates for different trails, depending on the conditions and type of trail. Or you may increase your spring rate for long climbs and decrease it for down hills.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eNo expense was spared on the materials or manufacturing processed used. The coil itself is made of super high tensile spring steel similar to \"lightweight\" springs (which is why Sprindex is lighter than regular springs) in order to handle the stress of the system when adjusted to its highest spring rate setting, as well as reduce coil mass. The Sprindex assembly is made of glass reinforced polymer. The 5 included adapters are made of slippery Delrin.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eSpring rate is the force required to move a spring a given distance and independent of preload. For example, a \"400 lb\/in\" spring requires 400 pounds to move the spring 1 inch and 800 pounds to move a spring 2 inches. Preload is how much force is required to start moving the spring. Sprindex is patent pending in many countries.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eFollow your shock manufacturer's instructions for preload amount and sag and other shock adjustments. Do not preload your Sprindex more than 3 turns and 1 to 2 turns is preferred.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eYour Sprindex coil behaves like a regular coil that has a spring rate the same as your adjusted Sprindex spring rate. Adjusting your Sprindex does not change the length of the coil and so does not change your preload. Preload is adjusted normally and with the threaded ring that came with your shock.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eHOW DOES SPRINDEX ADJUST SPRING RATE?\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eThe spring rate of a spring is the amount of force it takes to deflect the spring a certain distance (typically pounds per inch or Newtons per mm). Spring rate is a function of 4 characteristics: wire diameter, coil diameter, material, and number of active coils. More active coils causes a lower spring rate and fewer active coils causes a higher spring rate. Think of it like this: the less wire there is to bend, the stiffer the spring. By twisting the Dial, Sprindex works by altering the number of active coils available for deflection. The adjusted spring rate is displayed through a window in the Dial.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eCOIL SHOCKS VERSUS AIR SHOCKS\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eMost agree that coil shocks outperform air shocks, assuming the right spring rate for the particular rider. Air shocks have significant \"stiction\" which is friction that resists the shock's initial movement. Coil shocks have much less stiction. Coil shocks soak up small bumps much better, better tire contact with the ground, give better traction, better ride quality, and make a rider measurably faster. So why are air shocks more common? The answer is lack of adjustability for coils and weight. Traditional coils have a fixed spring rate and spring rate has a dramatic effect on riding performance and feel. Most people ride the wrong spring rate because springs are typically only available in wide increments. Spring rate has a profound effect on bike performance. Coil shocks also weigh more than air shocks, but when using the right spring rate, the small weight penalty is easily worth it. Besides, Sprindex is lighter than ordinary shock springs.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eSPRING RATE IS DIFFERENT FROM PRELOAD\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eCoil shocks include a threaded ring for preloading the coil. However, preloading is not the same as using a stiffer (higher spring rate) spring.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eSprindex\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003ePreload\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eA sprindex coil behaves exactly like a regular coil of the selected spring rate. For example, Sprindex adjusted to 435 lb\/in behaves just like a custom made 435 lb\/in standard coil.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003ePoor small bump absorption resulting in a harsh ride and poor traction because it increases force to start coil movement.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eEither reduces shock travel and\/or over-stresses spring.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eImproper SAG. SAG must be achieved by spring rate, not preload.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eDoesn't change coil spring rate. If you bottom out with a spring, heavy preloading may not solve this and will mess up the rest of the stroke.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eMountain bike shocks are designed for as little preload as is necessary to take play out of the system. Any more preload than this harms ride performance.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eSPRINDEX IS PROGRESSIVE\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eBesides having an adjustable spring rate, Sprindex is also progressive. Sprindex is specifically designed to have a progressive spring rate for the last 20% of stroke for big hit support and for bikes with a linear linkage design.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eCoil versus Air: A coil is usually very linear, whereas an air shock starts out Regressive (a reducing spring rate), and then turns progressive (an increasing spring rate). See the chart below. One of the disadvantages to using an Air shock is that its regressiveness mean less small bump sensitivity and traction. This is partly why Air shocks are not as plush as Coil.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eRegardless of your bike's suspension design, Sprindex being linear between about 0-80% stroke and progressive between about 80% and 100% stroke works great because it provides unbeatable sensitivity and traction through all the small and medium movement and it provides progressive support for big hits. Most importantly, Sprindex also provides spring rate adjustment in order to fine tune the perfect spring rate so that you maximize your suspension performance.\u003c\/span\u003e\u003c\/p\u003e\n\u003c!----\u003e","products":[{"product_id":"sprindex-coil-65mm-stroke","title":"Sprindex Coil 65mm Stroke","description":"\u003cp\u003eWe make things that work better and last longer. Our products solve real problems with clean design and honest materials.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eAdjustable base spring rate with a progressive finish\u003c\/li\u003e\n\u003cli\u003eIncludes spring, adjuster, and 5 performance adapters\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eLightweight (highest grade steel allows less material)\u003c\/li\u003e\n\u003cli\u003eAvailable in 5 spring rate range options\u003c\/li\u003e\n\u003cli\u003e65mm \/ 2.6\" stroke\u003c\/li\u003e\n\u003cli\u003e126mm spring length\u003c\/li\u003e\n\u003cli\u003ePrice includes all tax and express shipping to your door\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Nelson Suspension","offers":[{"title":"340-380","offer_id":50275486236901,"sku":null,"price":269.99,"currency_code":"NZD","in_stock":false},{"title":"390-430","offer_id":50275486269669,"sku":null,"price":269.99,"currency_code":"NZD","in_stock":false},{"title":"450-500","offer_id":50275486302437,"sku":null,"price":269.99,"currency_code":"NZD","in_stock":false},{"title":"500-550","offer_id":50275486335205,"sku":null,"price":269.99,"currency_code":"NZD","in_stock":false},{"title":"540-610","offer_id":50275486367973,"sku":null,"price":269.99,"currency_code":"NZD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0646\/0637\/2069\/files\/65mm_Spring_Black.webp?v=1784169342"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0646\/0637\/2069\/collections\/money_shot_RED2_2048x_46b5e155-8653-4f25-b457-68d03ebea54e.webp?v=1722480389","url":"https:\/\/www.nelsoncycletech.co.nz\/collections\/sprindex-adjustable-springs.oembed","provider":"Nelson Suspension","version":"1.0","type":"link"}