Software for fine tuning and design of two stroke engine. North american twostrokes general twostroke discussion two stroke engine and exhaust design software this is the place to talk about anything related to twostroke road race bikes. 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. My name is ed erlenbach, im a private tuner specializing in yamaha rd and tz performance in southern california. I found most other software work on outdated blair and jennings formulas. All engine development is done exclusively with tsr two stroke racing engine design software and. Four strokes are cleaner, but the main impetus for switching in e.
The way a two stroke motor works causes them to be f. The durability of the design has been proven in scca road racing where the v4 engine has raced problem free for several seasons in our dsport race car. There are many ways to boost the power, one of which is by installing a tuned pipe. Twostroke race bikes for superrich motorbike writer.
For port work, one company that will help you is 2strokeporting. This coefficient kh is called the horn coefficient, with typical values between one and two. With 4 stroke engines, porting, when performed correctly and with the right tools, will result in positive horsepower gains, along with increased fuel efficiency and a smoother running engine. Motas twostroke dyno will give you and your pc the equivalent of many experts knowledge. Considering component one, when the exhaust valve first opens in a 4 stroke piston engine, the incylinder pressure is still well above atmospheric. Millions of fluid and thermodynamic calculations are made by mota representing the conditions inside your two stroke engine throughout its complete operating cycle.
Taking proper advantage of these pressure waves component two can produce dramatic improvements in clearing the cylinder component one and can strongly assist the inflow of fresh charge. This is of some benefit in a fourstroke engine, but can be a big gain in twostroke engines. Contents chapter 1 introduction 9 chapter 2 the cylinder. Two stroke performance tuning chapter 3 porting and cylinder scavenging today, when we take a look down the cylinder of a twostroke engine, we find its walls literally filled with ports to handle the induction, transfer and exhaust phases of gas flow through the engine. Discover over 409 of our best selection of 2 stroke racing engines on with topselling 2 stroke racing engines brands. They are so simple and fun that ive always enjoyed tinkering with them. You should only rely on the experience of the very best. Pit stop usa offers red line two cycle alcohol oil 1 gallon case of 4 40625 at low everyday prices. Cc specialty tools porting and polishing for 2 stroke, 4 stroke, rotary engines.
The one i have been using is call mota, from ian williams tuning. You can also save and load the data by using the provided functions. Support racingsm by subscribing our youtube channel. Improve the performance of your two stroke engine with a torqsoft designed exhaust system. This toolkit offers some basic two stroke engine calculators in hand but also. Two stroke performance engine tuning performance parts. Two stroke design software the following are spreadsheets for different aspects of 2 stroke designmodification. Also, for anything heavier than a motorcycle a two stroke is harder to package due to having a very narrow range of engine.
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. The worlds leading 2 stroke engine simulation software for 3. The trend in high performance two strokes has continued towards more case volume, however each engine and application differ. Free 2 stroke expansion chamber calculator software update.
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. Bimotion 2stroke software has been commercially available and in professional use since 1991. The old adage of stuffing cases on every project just isnt true any more. Two stroke engine and exhaust design software north. 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. Two stroke performance tuning two stroke all of these detonation triggers are virtually unavoidable, with the exception of excessive spark lead. Portuguese website, related to 2stroke performance tuning with many diferent prototypes, such as supermotards, quads, road racing bikes, motocross. Software for optimal setting and design of engines and.
I got sick of the silly free programs and the expensive for sale programs and that wasteoftime 2 stroke wizard and so made my own expansion chamber calculator spreadsheet. In motocross its usually a compromise between best peak hp and good early off the pipe power. Two stroke cylinder porting tips watch this before you start cutting. Software that can accurately be used to design engines and mechanical systems is more in the order of.
However, you shouldnt just pick any business that you can find anywhere. North american twostrokes north american twostrokes. Assign fixed relationships between transfers and exhaust port. Two stroke petrol engines are preferred when mechanical simplicity, light weight, and high powertoweight ratio are design priorities. Best value 2 stroke racing engines great deals on 2 stroke. A performance exhaust system is a characterizing element for any internal combustion conveyance. 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. The worlds leading 2stroke engine simulation software for 3. Thank you for your interest in dynomationtwostroke designed for windows98xp. Moreover you can have advices for the development of the engine thanks to the help of tested formulas for intake, exhaust. Twostroke oil is expensive, and you need about 4 ounces of it per gallon of gas. But because of the limited worldwide activity in two stroke engine development, program sales were limited and further development was curtailed. Im working on an 800cc inline twin twostroke, and looking at 170 hp. But because of the limited worldwide activity in twostroke engine development, program sales were limited and further development was curtailed.
The tz250b is a vtwin road racing motorcycle produced by yamaha for the 1991 racing season. Software for fine tuning and design of two stroke engine by. Dynomationtwostroke engine simulation motion software, inc. Feb 16, 2017 two stroke cylinder porting tips watch this before you start cutting. There are a few software programs available for 2 stroke simulations. 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. 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. Twostroke race bikes for superrich posted on 12th october, 2015 by mark hinchliffe it seems there is a lucrative market in making limitededition gp race bikes for superrich clients, with two european companies making twostroke racers. There are better designs that were used for gp racing but it is still hard to get info or a look at the insides. This fuel is suitable for motocross racing, dirt track racing, long. It is also very good for expansion chamber designs.
This is of some benefit in a four stroke engine, but can be a big gain in two stroke engines. 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. The only unrestricted open series for all classes of two stroke race bikes from factory produced to conversions from road. There are a few software programs available for 2 stroke. Two stroke performance tuning twostroke all of these detonation triggers are virtually unavoidable, with the exception of excessive spark lead. If you are aiming for these qualities, modifying your 2stroke engine is a great strategy. 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. Shop the top 25 most popular 2 stroke racing engines at the best prices.
Mota software, 2 stroke engine simulation software, 2 stroke exhaust design. First select your engine application and final drive type. Red line synthetic oil two cycle oils free shipping on. So whether you have a 50cc road bike, a 500cc motocrosser or a classic racer, we will design the perfect exhaust system for you. Bud racing usa 31889 corydon street unit 150 92530 lake elsinore ca usa.
Twostroke waveaction engine simulation motion software. Racingsm software has features for many different areas 2stroke 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. Specificaly written for gokarts engines, but will do any 2 stroke. Twostroke engines do not use fuel efficiently, so you would get fewer miles per gallon. Port matching, porting and trenching twostroke engine cases. Improve the performance of your twostroke engine with a torqsoft designed exhaust system. From the bellmouth of the carburetor, to the insert of the reed valve and the reed petals, at the studied of the cylinder ports. Software for optimal setting and design of engines and racing. Dedicated to the free exchange of information among twostroke road racing motorcycle enthusiasts around the world. Cc specialty tools porting and polishing for 2 stroke engines.
So whether you have a 50cc road bike, a 500cc motocrosser or a classic racer. This fuel is suitable for motocross racing, dirt track racing, long track racing, super motard and enduro. Those of us who have grown up in the japanese two stroke. Be sure to check out all our products from red line including red line red line two stroke racing oil. Best value 2 stroke racing engines great deals on 2.
Just a quick update on the progress of the freeware 2 stroke expansion chamber calculator software. Buy red line 40605 2stroke race oil, 1 gallon, 1 pack. Hi performance two stroke porting software program youtube. Engine 2s 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. 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. We have combos from mild to wild to suit any racing application. The calculated specific timearea and blowdown are shown. This is in contrast to a fourstroke engine, which requires four strokes of the piston to complete a power cycle during two crankshaft revolutions. Download my free calculators spreadsheet to check your computers ability. Portuguese website, related to 2 stroke performance tuning with many diferent prototypes, such as supermotards, quads, road racing bikes, motocross. This will get you started by providing, for your engine, the dimensions of an expansion chamber with a 2stage or 3stage diffuser. With 2 stroke engine modification, porting and polishing is the ultimate choice. Bigger carburetors, higher compression ratios, altered port timings and expansion. Calculates port heights from durations, or durations from port heights.
Defining the acoustic profile and influencing the powerband exhaust design is a more dynamic science than stringing together a few pipes and tacking on some mufflers. Mta 2 stroke mx championship 2017 at glen helen dirt rider. Road to the most powerful two stroke ever part 2 i can do this. Those of us who have grown up in the japanese twostroke. All sport twostroke, synthetic, 1 gallon, set of 4. Motor oils free delivery possible on eligible purchases. The home of ultimate two stroke motorcycle road racing. 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. There are 3 exhaust ports one large central port flanked by 2 smaller side ports boosters.
You would burn about a gallon of oil every 1,000 miles if you used a twostroke engine in a car. We shall send you a pdf document with the templates for manufacturing your exhaust. Small values of kh are best suited to grand prix engines with narrow power bands, larger. A simple 3 stage two stroke exhaust calculator based on formulas of g. A twostroke or twocycle engine is a type of internal combustion engine which completes a power cycle with two strokes up and down movements of the piston during only one crankshaft revolution. 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.