JPG_500/MI0002/891/MI0002891343.jpg?partner=allrovi.com' alt='The Ultimate Demonstration Disc' title='The Ultimate Demonstration Disc' />The ultimate guide to mountain bike rear suspension systems. Mountain bike rear suspension may appear to come in a baffling array of different designs. Each one is claimed to offer superior performance for one reason or another, usually backed by an array of baffling acronyms and marketing spiel. In a world seemingly intent on destroying itself, the humble capybara is a wholesome good. The oversized friendship guinea pig is a reminder of what humanity could. Download Ultimate Mortal Kombat Trilogy 2007 Hack Sega Megadrive Genesis The Iso Zone The Ultimate Retro Gaming Resource. But if you really boil it down, there are essentially just three or four basic layouts, each with their own pros and cons. This article was originally published on October 2nd, 2. November 1. 0th, 2. The original had a few errata and glossed over the important distinction between Instant Centre and Centre of Curvature. This version is a little more in depth, but more accurate and even more detailed. Bike nerds, please enjoy. Here Ill go through all the major layouts and a few variations too explaining how they work and their potential advantages or shortcomings. Then Ill define the major design concepts that are collectively known as suspension kinematics, these include anti squat, brake jack, and leverage rate, as well as the important concepts of Instant Centre and Centre of Curvature. Ill explain what they mean, how they interact and use some real world examples to shed light on how they affect the way a bike actually rides. First off, lets take a look at the four main designs, followed by a few which dont fit neatly into those categories. The terms used here in bold will be defined and explored in detail later in the article. Single pivot. The Orange 5 is a classic example of the simple single pivot. This is the simplest suspension design. The Ultimate Demonstration Disc' title='The Ultimate Demonstration Disc' />Here the rear axle is connected to the main frame by a swing arm, with no pivots in between. The axle moves in a constant arc, centred on the pivot point. In the case of a true single pivot, the shock is connected directly to the swingarm a design made famous by Orange Bikes. The simplicity of the design makes for easier maintenance of the pivot bearings. One possible shortcoming of this design is that it offers little control over the leverage curve. True single pivot bikes are generally pretty linear the force required to move the rear wheel through its travel does not ramp up towards the end to resist bottom out as it does with a more progressive design. TP0yr7qH48/hqdefault.jpg' alt='The Ultimate Demonstration Disc' title='The Ultimate Demonstration Disc' />Linkage driven single pivot. A linkage driven single pivot design still uses an uninterrupted swingarm, connecting the rear axle directly to the mainframe. However, it incorporates some form of linkage to drive the shock. This allows the designers to manipulate the leverage curve and so control the frames progressivity how much the suspension firms up towards the end of the stroke. On a Scott Gambler, or any recent Evil, for example, the linkage is driven from the front of the swingarm. Kona, Cannondale and Commencal among others typically use a visually different design, which sees the shock driven from a pivot or flex stay located above the rear axle. This looks similar to a four bar Horst link design, so is sometimes referred to as faux bar but the rear axle is still connected to the main pivot via a simple swingarm, so this is just another form of linkage driven single pivot. Horst link four barHorst link aka four bar suspension as used by Specialized, Norco, and newer Transitions as well as many others is marked out by a rear pivot located below the rear axle on the chainstay rather than the seatstay as with the faux bar. This means the rear axle is not directly connected to the mainframe, and so moves in a path which is defined by its Instant Centre and Centre of curvature, which may move as the suspension cycles through its travel. Depending on the position of the Instant Centre, the effect of braking forces on the suspension known as anti rise can be reduced relative to a single pivot design. Pc Games Softwares Full Version For Windows 7 Ultimate. As Ill explain later, this can afford designers more control over the levels of anti squat throughout the suspensions travel, as well as reducing the effect of braking forces known as anti rise on the suspension, with the aim of  improving sensitivity. Twin link virtual pivot pointThese use a rigid rear triangle, articulating on a pair of short links which connect it to the mainframe. It actually works in a similar way to a Horst link design imagine moving the Horst links chainstay pivot much closer to the mainframe and you have the basis of a twin link system. The only real difference is the length of the lower link. The Fuji Rakan illustrates this lack of distinction, like a missing link between the two styles. As with the Horst link design, here the axles direction is tangential to a moving instant centre, while the related concept of the centre of curvature, or virtual pivot point, defines the way in which the axle path curves through its travel. Some, such as Santa Cruzs VPP system, use links that counter rotate turn in opposite directions, while many others, such as Giants Maestro system, have links that co rotate turn in the same direction. As well see later, the way the centre of curvature migrates as the bike moves through its travel is quite different for each configuration. In fact, twin link or horst link bikes with co rotating links often exhibit anti squat behavior thats very similar to a single pivot bike. While counter rotating links can produce an anti squat profile which peaks in the middle of the travel, which may be desirable in terms of balancing pedal efficiency against pedal kickback. This distinction between counter rotating and co rotating links is more important in terms of suspension kinematics than the arbitrary distinction between Horst link and twin link designs. Of Cnc Simulator Software. Example of Poles moving instant centre. A few notable exceptions 5. Review The Beatles, Sgt. Peppers Lonely Hearts Club Band 50th Anniversary Super Deluxe Edition May 26, 2017 By Joe Marchese 17 Comments. Permanent Portable Our DISCatcher is installed on more disc golf course Worldwide than any other brand. Designed to lower your scores, the DISCatche. How to bed in new disc brake pads in 8 easy steps How to repair a puncture How to service Shimano SPD pedals walkthrough guide with video How to get your. HighEnd Audio, HiRes Audio HRA High Fidelity Audiophile Industry News, the authority in highend audiophile music and audio equipment news and show events. As part of my job, I use 3D Bluray discs to test the 3D video performance of Bluray disc players, TVs, video projectors, and home theater receivers. However, not. Treks ABP system. This design is essentially a linkage driven single pivot, except that Trek uses a concentric dropout pivot at the rear axle. This allows them to mount the brake caliper to the seatstay rather than the chainstay. Because the seatstays rotate less around the disc rotor than the chainstays as the suspension cycles, the effect of braking forces on the suspension known as anti rise is significantly reduced. In other words, Treks design works like a linkage driven single pivot in terms of pedalling forces, but like a Horst link in terms of braking forces. Its kind of a hybrid. Yetis Switch Infinity This system uses a lower pivot which slides up and down on a pair of vertical shafts, along with an upper link which rotates clockwise if viewed from the driveside as the suspension compresses. The lower pivot acts like the rear pivot on the lower link of a traditional twin link design, except that this pivot moves vertically in a straight line rather than a curving arc centred on the forward pivot point. Computer Software Skills List Resume there. Imagine you could make the lower link of a traditional twin link bike infinitely long and horizontal. Then its rear pivot location would move up and down in a straight, vertical line with no curvature to its path at all. This is essentially what Yeti has simulated with its linear sliders hence the name. While many of our custom made trainers are reserved for Cheat Happens Premium members, we also create and release many FREE TRAINERS each month. DVD an abbreviation of digital video disc or digital versatile disc is a digital optical disc storage format invented and developed by Panasonic, Philips, Sony. Rare 1968 original u. Whats the point of all that Well, Yeti claims this allows them to get the kinematics to behave how it wants all the way through the travel. On paper, at least, theres nothing drastically different about Yetis suspension kinematics compared to some regular twin link designs, although its managed to weight the anti squat towards the sag point where its needed most, while minimizing pedal kickback elsewhere in the travel.