Racingsm software has features for many different areas 2 stroke exhausts development, drag racing features, simulators, carburetor tuning, connectingrod analysis etc with all this knowhow along with lufo racing heritage, we believe this is a very fair price. Mechanically, the twostroke engine is very simple, and unfortunately on. Free 2stroke tuning info, pdfs and software free tuning and maintenance info, plus links to our original tuning pages that started it all off. Also, for anything heavier than a motorcycle a two stroke is harder to package due to having a very narrow range of engine. Contents chapter 1 introduction 9 chapter 2 the cylinder. Millions of fluid and thermodynamic calculations are made by mota representing the conditions inside your two stroke engine throughout its complete operating cycle. From the bellmouth of the carburetor, to the insert of the reed valve and the reed petals, at the studied of the cylinder ports, until to the balance of the crankshaft, thanks at our software you could optimize your engine and to develop new.
Software for fine tuning and design of two stroke engine. Just a quick update on the progress of the freeware 2 stroke expansion chamber calculator software. The information used in the programs calculations was taken from the books the basic design of the two stroke engine and the book design and simulation of two stroke engines. Two stroke tuners handbook 2 another mistake commonly made, sometimes even by those who have enjoyed some success in modifying twostroke engines, is to believe in a kind of mechanistic magic. Cc specialty tools porting and polishing for 2 stroke engines. The home of ultimate two stroke motorcycle road racing. Two stroke design software the following are spreadsheets for different aspects of 2 stroke designmodification. Those of us who have grown up in the japanese two stroke. Blair of queens university belfast, and published by the society of automotive engineers.
Two stroke engine and exhaust design software north. 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. No previous knowledge of the two stroke cycle engine is required just input the required data and then run mota to set in motion this powerful process. If you are aiming for these qualities, modifying your 2stroke engine is a great strategy. Software for optimal setting and design of engines and racing. Improve the performance of your two stroke engine with a torqsoft designed exhaust system. Dedicated to the free exchange of information among twostroke road racing motorcycle enthusiasts around the world. The following are spreadsheets for different aspects of 2 stroke designmodification. The only unrestricted open series for all classes of two stroke race bikes from factory produced to conversions from road. Two stroke petrol engines are preferred when mechanical simplicity, light weight, and high powertoweight ratio are design priorities. Feb 16, 2017 two stroke cylinder porting tips watch this before you start cutting. Researchers have found that it is the gases at the very outer limits of the combustion chamber, called the end gases, that selfignite to cause detonation. Four strokes are cleaner, but the main impetus for switching in e. Support racingsm by subscribing our youtube channel.
The trend in high performance two strokes has continued towards more case volume, however each engine and application differ. But because of the limited worldwide activity in twostroke engine development, program. Enthusiasts, tuners, mechanics, gp, drag racing, mx, enduro. So whether you have a 50cc road bike, a 500cc motocrosser or a classic racer, we will design the perfect exhaust system for you. Software for optimal setting and design of engines and. They are so simple and fun that ive always enjoyed tinkering with them. Also, if you want to do some interactive bracket racing with the twostroke class for straight rhythm, check out fantasybracket. North american twostrokes north american twostrokes. Free stroke, also known as tirando, is the most commonly used stroke in classical guitar technique. There are many ways to boost the power, one of which is by installing a tuned pipe.
Racing software free download racing top 4 download. These are the files that can function manually without using macros by using open office. This fuel is suitable for motocross racing, dirt track racing, long track racing, super motard and enduro. 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. Dynomationtwostroke engine simulation motion software, inc. Assign fixed relationships between transfers and exhaust port. You should only rely on the experience of the very best. The old adage of stuffing cases on every project just isnt true any more. In motocross its usually a compromise between best peak hp and good early off the pipe power. For manufacter and tuner of two stroke engine, ntproject has developed a series of software to help in the development of the engine and its components.
Cc specialty tools porting and polishing for 2 stroke, 4 stroke, rotary engines. Twostroke waveaction engine simulation motion software. My name is ed erlenbach, im a private tuner specializing in yamaha rd and tz performance in southern california. 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. Read my expansion chamber theory page to get a full understanding of how expansion chambers work and click here to read more of the details of this spreadsheet calculator. This will get you started by providing, for your engine, the dimensions of an expansion chamber with a 2stage or 3stage diffuser. Bigger carburetors, higher compression ratios, altered port timings and expansion. Port matching, porting and trenching twostroke engine cases. North american two strokes general two stroke discussion two stroke engine and exhaust design software this is the place to talk about anything related to two stroke road race bikes. All engine development is done exclusively with tsr two stroke racing engine design software and. Portuguese website, related to 2 stroke performance tuning with many diferent prototypes, such as supermotards, quads, road racing bikes, motocross. Twostroke oil is expensive, and you need about 4 ounces of it per gallon of gas. I found most other software work on outdated blair and jennings formulas. Racing software free download racing top 4 download offers free software downloads for windows, mac, ios and android computers and mobile devices.
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. Buy red line 40603 twostroke racing motor oil motorcycle high performance synthetic engine lubricant16 oz bottle. Software for fine tuning and design of two stroke engine by. If you are aiming for these qualities, modifying your 2stroke engine is. Free 2 stroke expansion chamber calculator software update. To say that they were ultimately successful would be gross understatement. But because of the limited worldwide activity in two stroke engine development, program sales were limited and further development was curtailed. You would burn about a gallon of oil every 1,000 miles if you used a twostroke engine in a car.
With the traditional lubrication technique of mixing oil into the fuel, they also have the advantage of working in any orientation, as there is no oil reservoir dependent on gravity. It can produce a variety of sounds and dynamics, while using very little energy from the right hand. This coefficient kh is called the horn coefficient, with typical values between one and two. There is no 2 stroke displacement limit for our software, for example you can have a 125, 250, 500, 700 singlecylinder and our modules will work flawlessly. Moreover you can have advices for the development of the engine thanks to the help of tested formulas for intake, exhaust. The way a two stroke motor works causes them to be f. For port work, one company that will help you is 2strokeporting. From a 49cc racing engine, to a gp 125 engine, or a 1500 mercurial triple engine, or a 250 kart engine, racingsm software suits. Free tuning and maintenance info, plus links to our original tuning pages that started it all off.
Mota for windows slide show of features millions of tuning variations possible. Calculates port heights from durations, or durations from port heights. We shall send you a pdf document with the templates for manufacturing your exhaust. You can also save and load the data by using the provided functions. Jun 08, 2015 2 stroke exhaust calculator racingsm software this is a module for complex 2 stroke exhaust calculation having in account several variables according to lufo racing tuner philosophy. For a 2 stroke with expansion chamber and no boost bottle then everywhere. This is of some benefit in a four stroke engine, but can be a big gain in two stroke engines. A simple 3 stage two stroke exhaust calculator based on formulas of g. However, you shouldnt just pick any business that you can find anywhere. My professional 2 stroke expansion chamber design software is more sophisticated than other programs that only use a few basic formulas. Media that can be downloaded for free with a pond5 membership. The software in addition to defining the geometry of the insert, it also indicates the processing steps for its craft realization. Each intake port can be locked to a fixed timing relation with the exhaust port.
Thanks to the software two stroke design instead you can enter the data of your cylinder with extreme facility and precision, and then analyze the port areas and the timing area in the engine cycle timing for each phase. Small values of kh are best suited to grand prix engines with narrow power bands, larger. For manufacter and tuner of two stroke engine, ntproject has developed a series of software to help in the development of the engine and its components from the bellmouth of the carburetor, to the insert of the reed valve and the reed petals, at the studied of the cylinder ports, until to the balance of the crankshaft, thanks at our software you could optimize your engine and to develop new. Two stroke cylinder porting tips watch this before you start cutting. Bud racing usa 31889 corydon street unit 150 92530 lake elsinore ca usa. Tirando is spanish for pulling the free stroke movement begins on, or just above the string. Twostroke engines do not use fuel efficiently, so you would get fewer miles per gallon.246 853 780 629 266 358 395 191 204 1078 1265 739 1196 883 163 308 250 1381 186 1421 26 694 504 628 911 711 1219 1140 1315 1132 66 40 1062