Flycut with as cast 220 ls1tech.com5/16/2023 ![]() In this case, the feasibility and optimisation of the machining order with this cutting method advantages of laser cutting depends on the shape and position of the holes. Meanwhile, a screen with circular holes is cut one hole at a time, optimising the path of the movements.Īpart from these two types of screens, which are the most common, it is also possible to machine another type of hole, composed of arches and/or segments. On a screen with rectangular holes, all the horizontal cuts should be made first, followed by the vertical cuts (or vice versa). Empty movements are also optimised so they are as short as possible between two cuts and have the smallest possible change of direction. The algorithm that calculates the machining order must detect holes in the screens to perform this type of cut.ĭepending on the shape of the hole, it has to be partitioned and reformatted to machine the maximum number of elements without changing direction to avoid processing the corners and minimising the speed reduction time for a change in direction. Here are some dyno graphs of our V.2 Polluter completely cam only with no fast intakes, no single plane intakes just stock factory plastic intake, stock heads, stock throttle body, stock MAF, stock lid, long tube headers and exhaust: V.2 on a 112LSA in a 5.7 LS1. The machining order and process used for the holes must be correct to ensure the best possible performance during fly-cutting mode. In these cases, the machining time is considerably reduced, with a subsequent increase in productivity. This cutting mode is useful for certain jobs that involve parts with many interior holes, in which the cutting movements are alternated with short empty movements. To do this, the material thickness must be fine enough to be drilled without any activation time, a process known as “piercing on the fly.” To accomplish this kind of cut, the machine and the numeric control must be capable of turning the laser on and off, as well as being precisely positioned at a certain point within a minimum time interval (fractions of a second). In normal mode cutting, the machining process has separate paths, so the laser always turns on and off after the movement of the head shafts have stopped. The term “flying cut” refers to the cutting mode in which the laser cutting process is turned on while the head is moving. By Asier Ortiz, chief technical officer, Lantek After I take it back to him so he can maximize the tune, it will be off to my buddies dyno to see what kind of numbers I can put down.Utilising the “flying cut” is especially useful to help with jobs that involve many interior holes. Right now, my builder/tuner just has a base/drivability tune in it and he told me to bring it back after I get the clutch broke in and he'll do some WOT tuning and really start adding timing to maximize this combination. ![]() With that said, I got the car back last night and she runs strong. I don't think you can go wrong with either head, but if you do get the TFS heads, have Brian hook you up with his port work. He goes on to talk about fully sanding the exhaust and leaving most of the intake port with a burr finish. I looked back at the e-mail he sent me when I asked how much he charges for the "hand port work" and he said it would be $300.00 to do the hand work, which includes fully hand finishing the ports. Before I bought these heads, it was between them and the TFS as cast 220cc heads from Brian Tooley. They are an aftermarket casting and are worth 10 to 15 hp over Advanced Induction's 232cc ported 243's. If I were you, I'd seriously consider these Advanced Induction Dart/RHS cnc'd heads.
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