2 stroke porting software

The ports found within a twostroke cylinder in combination with the. Determine what port is required for a specific rpm and compression. Software for fine tuning and design of two stroke engine. Computer design each part of the 2stroke cycle can be evaluated and designed with computer software programs.

We cant afford to waste any of it by having it escape out the exhaust port. The description of two stroke engine porting zmod this software made for help out team in first time, but some friend advise this is the time to share. Exhaust and intake tuning building, tips and techniques. Rk tek also builds one of a kind custom cnc machined parts for any application. Ways to increase low rpm torque, and why do they work. Lowell horning 2strokeporting master modified as i felt fitting you have two three really critical elements in a 2 stroke engine that generate power and are porting areas that yield real results if done correctly and in concert with intakecombustionexhaust quality purpose built pipe is critical. Main reason for wanting the software is to play with the port timing, head. New feature of racingsm software, the 2stroke exhaust segment splitter. The software does complete cycle simulation of the whole internal combustion process including the gasdynamics in the pipesducts, ports and plenums air boxes, boost bottles, exhaust boxes etc. Porting the cylinder designed by engineers to create energy in a certain rpm range resulting in. Using apkpure app to upgrade two stroke engine porting zmod, fast, free and save your internet data. Bimotion 2stroke software at bimotion, our mission is to develop user friendly commercial grade 2stroke software, at an affordable cost for amateurs and professionals alike. Here is the official description for 2 stroke wizard tuned pipe.

Porting and polishing two stroke motorcycle engines. When porting begin to open and closed in crankshaft degrees duration, we will undoubtedly be modifications on the right path. Each part of the 2stroke cycle can be evaluated and designed with computer software programs. Aussie twostroke engine invention motorbike writer. Assign fixed relationships between transfers and exhaust port. In a 2 stroke, we want to maximize the retention of that finite fuel charge. Split your calculated 2stroke exhaust up to 42 sections with regular length or even more with irregular lengths.

Ports roof distances, from top of barrel, are fixed by the settings in the main program s window. There is one or more forwardlocated exhaust ports, two or more side transfer ports, and one rear intake port. Rk tek designs and builds custom 2 stroke aftermarket performance heads for atvs,snowmobiles, and motorcycles. Port matching, porting and trenching twostroke engine cases. Cc specialty tools porting and polishing equipment. The website does not intend to compeed with any other website dealing with 2 stroke tuning, and the information shared is not at all as thorough as what you can get from reading the books. Four stroke porting and performance finding reliable, quality power you can feel on modern four strokes is very challenging. The first 3 videos will cover simple mapping of the exhaust port and transferring that in to 2t exhaust calc software for the purpose of expansion. Hi performance two stroke porting software program youtube. I only have a dremel and was wondering if i could do anything at all myself to my yz125 before i put it together. Dynomationtwostroke wavedynamics simulation program users guide and simulation tips for optimizing program operation two stroke simulation v. In motocross its usually a compromise between best peak hp and good early off the pipe power. Determine the level of porting you wish to achieve before you start cutting or grinding. The worlds leading 2stroke engine simulation software for 3.

Professional grade 2 stroke porting and polishing kit includes. The morbidelli 125 twin road racer is a rotary valve engine. Check out mcdizzys 2 stroke page, there is alot of info on there on some of the software available, as well a cylinder port mapping. The piston crown opens and closes the exhaust and transfer ports. Porting 2 stroke many things will affect the power delivery of twostroke motorcycle engines. Porting and polishing twostroke motorcycle engines. Specialty tools for porting 2 stroke, 4 stroke, cylinders, cylinder heads, 2 stroke case porting, and intakes. The compromises in the 2 stroke design to be cleverly efficient in producing power pulses eliminates the. Calculates port heights from durations, or durations from port heights.

Bimotion 2stroke software has been commercially available and in professional use since 1991. Great book, but ill guess the world has moved past that info. I was reading a thread about a 2 stroke versus a 4 stroke and it occurred to me that if the porting, or timing, of a 2 stroke could be changed, that maybe its maximum torque range could be lowered to an rpm comparable to the 4 stroke, and thus swing the same prop as the 4 stroke. Two stroke performance tuning chapter 3 porting and cylinder scavenging today, when we take a look down the cylinder of a two stroke engine, we find its walls literally filled with ports to handle the induction, transfer and exhaust phases of gas flow through the engine. Twostroke waveaction engine simulation motion software. The computer allows us to compare the variables with existing engines. Everything you need to know about the twostroke cylinder. For a 2 stroke with expansion chamber and no boost bottle then everywhere except for. We use porting tools that work, and with such a vast experience in this very delicate and demanding area we can usually provide a job that is the equal of anything from across. Those of us who have grown up in the japanese two stroke. Petals reed valve in the 2 stroke engine with reed valve admission, the identification of petals more adapted to the reed valve and to the engine is essential to maximize the performance starting from the intake phase. Using our flow bench, dynomometer, and advanced computer simulation software along with hard work and testing, we offer industry leading performance. After our trial and test, the software was found to be official, secure and free. Test your own theories on porting and exhaust pipe design.

Our goal is to achieve the biggest power gains as possible, while maintaining reliability on your 2stroke engine. The businesses and individuals that purchased the original dynomation 2 stroke program were pleased with the capability and accuracy of the software. Great tool for those who are building exquisite format exhausts, one of the largest benefits of this module is that it can be used with any exhaust formula results. Well i have been reminded lately that this is a dirtbike forum where i can ask questions so i figured id give it a shot. Two stroke engine porting zmod for android apk download. We use computer design software to maximize power and torque at any elevation. If the port opens low in the intake stroke to take advantage of the full upstroke of the piston, it will pump a great deal of the intake charge back out through the carb. Two stroke performance tuning a disc partially cut away and attached to the end of the crankshaft opens and closes an inlet port in the side of the crankcase.

Two stroke tuners handbook 2 another mistake commonly made, sometimes even by those who have enjoyed some success in modifying two stroke engines, is to believe in a kind of mechanistic magic. Two stroke cylinder porting tips watch this before you start cutting. Harris performance engineering hp race development. The newest info i have is the two stroke tuners handbook by gordon jennings. Im looking to start doing all my own porting and was thinking about buying the tsr 2 stroe porting software, has anyone used it, and is there any better software out there if you are just getting started get g. Two stroke engine and exhaust design software north. Our example has an after market 50cc performance cylinder with a bridged exhaust port. Open the port cad window by selecting toolsport cad from the main menu. Two stroke engine porting zmod this software made for help out team in first time, but some friend advise this is the time to share. The software in addition to defining the geometry of the insert, it also indicates the processing steps for its craft realization. Two stroke design software the following are spreadsheets for different aspects of 2 stroke design modification. The old adage of stuffing cases on every project just isnt true any more. Has any one done any kind of porting or polishing to a 2 stroke cylinder themselves. We now have a simple 2 stroke expansion chamber design program.

Kick ass and take names with this baby software located on the web at this address. My new youtube video on the newest version of porting calculator is at. In the design form first select the water cooled and reed induction options from the dropdown menus. The trend in high performance two strokes has continued towards more case volume, however each engine and application differ. Heres how shaving off miniscule ammounts of metal can drastically improve your speed.

Pipes, silencers, carburetors, reeds and valves are all popular bolton modifications. Thanks for the info, ive been reading all macdizzys stuff, thats where i got that boost bottle post but everyone here thinks hes an idiot. These modifications can be extremely effective when used in the right combinations. Im working on gathering enough parts to build a triple cylinder rd400 and at some point ill need to sort out the porting and exhaust. In the cad window figure 5 you can adjust the port shapes for the target mean areas. Many had crankcases that were not part of the induction system and they had intake vales but the exhaust was a port in the cylinder wall, most required a blower to run. Dynomationtwostroke engine simulation motion software, inc. How to tips from tj on porting and polishing 2 strokes. This cylinder has two exhaust ports and five transfer ports so enter 2 in the no. Cc specialty tools porting and polishing equipment, kits, carbide burrs, and abrasives. Bigger carburetors, higher compression ratios, altered port timings and expansion. Tom turner, master two stroke tuner, pipe builder, and the man that developed tsr two stroke racing software designed and built his 424cc yamaha rd400 dragbike to develop and prove his racing design software and prove it, it did. An engine port is an open window in the cylinder wall for the intake or exhaust of fuel mixture airgas. A 2 stroke is different of course since there is only a finite amount of fresh mixture available in the crankcase to be transferred up into the cylinder.