When this fluid undergoes high contact pressures under rolling contact between the two very hard elements, the spheres and the discs, the fluid undergoes a near-instantaneous phase transition to an elastic solid. A traction drive transmission operates utilizing a traction fluid that, under normal circumstances, provides lubrication for the drive. Transmissions that use EHL to transfer power are known as traction drives. The second factor is elastohydrodynamic lubrication (EHL).Contacting a rotating sphere at two different locations relative to the sphere’s rotational axis will provide a “gear ratio”, which can range from underdrive to overdrive depending on the location of the contact points for input and output torque and speed. The first is the geometric configuration of the drive, which is based on differing contact ratio of a sphere.Two factors allow the NuVinci CVT to provide a continuously variable ratio range in a compact package: The result is the ability to sweep the transmission through the entire ratio range smoothly, while in motion, under load, or stopped. This configuration allows input and output to be concentric and compact. The spheres are placed in a circular array around a central idler (sun) and contact separate input and output traction discs. The system has multiple "planets" to transfer torque through multiple fluid patches. The gear ratio is shifted by tilting the axes of the spheres in a continuous fashion, to provide different contact radii, which in turn drive input and output discs. As a result, the NuVinci CVT system offers seamless and continuous transition to any ratio within its range. Tilting the balls changes their contact diameters and varies the speed ratio. The NuVinci CVT gear system uses a set of rotating and tilting balls positioned between the input and output discs of a transmission. Various attempts have been made to implement them in vehicle transmissions, but commercial success has been elusive. Mechanical variators have existed since the 1800s, and they have been used successfully in machinery, particularly the Kopp tilting ball variator. 4 Comparison to conventional transmissions.
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I have also been working on some arcade stuff, with improvements to the special effect emulation for some Seta hardware games (Penguin Bros. One especially interesting find / contribution is a Speed Racer Plug and Play from Senario which fans of the show will likely appreciate as a piece of history. Videos of various other things have also been going up on my YouTube, so be sure to follow that if you want videos on things I haven't found any time to write-up properly. These are Genesis 'System on a Chip' units. Given that it was Sega's anniversary recently, it also made sense to get the remaining Sega / Radica multi-game units dumped and emulated. Emulation in MAME isn't quite finished yet, but I thought it worth covering. In this write-up I look at the Pac-Man Connect & Play unit, which is actually an emulation based unit, unlike the JAKKS Pacific units. I've been doing a lot more work than I've had time to cover, but I figure these might be of some interest here at least r/pinball - Pinball specific discussion. r/arcade - Original CoinOP Arcade specific discussion. r/RetroGamingNetwork - a multireddit for retro gaming! r/HyperSpin - HyperSpin specific discussion. R/MAME RULES/REGULATIONS REDDIT'S ARCADE COMMUNITY Over time, MAME (originally stood for Multiple Arcade Machine Emulator) absorbed the sister-project MESS (Multi Emulator Super System), so MAME now documents a wide variety of (mostly vintage) computers, video game consoles and calculators, in addition to the arcade video games that were its initial focus. The fact that the software is usable serves primarily to validate the accuracy of the documentation (how else can you prove that you have recreated the hardware faithfully?). The source code to MAME serves as this documentation. This is achieved by documenting the hardware and how it functions. As electronic technology continues to rush forward, MAME prevents this important "vintage" software from being lost and forgotten. MAME’s purpose is to preserve decades of software history. MAME is a multi-purpose emulation framework. Questions? Please check out OUR MAME/BYOAC Wiki! |