Aussie twostroke engine invention motorbike writer. We have the optimum case modifications to suit each application and engine developed over countless hours. Small values of kh are best suited to grand prix engines with narrow power bands, larger. 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. Two stroke design modification software the following are spreadsheets for different aspects of 2 stroke designmodification. We believe that using this software will help your 2stroke development or racing results on different types of competition.
Gordon blair programmed the 3d simulator named virtual two stroke, the most well know two stroke engine researcher. Software for optimal setting and design of engines and. Software for optimal setting and design of engines and racing. We can offer machining services for big bores, strokers, or repairs as to worn main bearing pockets. Maxima racing usa 2022901 formula k2 synthetic racing 2stroke injector oil, 1. Portuguese website, related to 2 stroke performance tuning with many diferent prototypes, such as supermotards, quads, road racing bikes, motocross. If you are aiming for these qualities, modifying your 2stroke engine is a great strategy. But because of the limited worldwide activity in two stroke engine development, program sales were limited and further development was curtailed. Each part of the 2 stroke cycle can be evaluated and designed. With 2 stroke engine modification, porting and polishing is the ultimate choice. 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. Many things will affect the power delivery of twostroke motorcycle engines. But because of the limited worldwide activity in twostroke engine development, program sales were limited and further development was curtailed. This coefficient kh is called the horn coefficient, with typical values between one and two.
The way a two stroke motor works causes them to be f. Hp is a full on specialist in ecu tuning 2 and 4 stroke, cdi development for 2 strokes, and general mapping needs. Improve the performance of your two stroke engine with a torqsoft designed exhaust system. Two stroke designmodification software the following are spreadsheets for different aspects of 2 stroke designmodification. In the mid1930s, the dkw company set out to make twostrokes respectable. Bmep hp x 6500 l x rpm 2 stroke l engine size in liters.
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 petrol engines are preferred when mechanical simplicity, light weight, and high powertoweight ratio are design priorities. Tools of the trade, by eric gorr the dirt bike, mx. 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. Portuguese website, related to 2stroke performance tuning with many diferent prototypes, such as supermotards, quads, road racing bikes, motocross.
So whether you have a 50cc road bike, a 500cc motocrosser or a classic racer. It enables tuners to combine all the engine components together to simulate dyno runs on the computer so they can save time machining metal and swapping parts on actual dyno runs. Thank you for your interest in dynomationtwostroke designed for windows98xp. However, ktm has released a raft of new directinjection two strokers and honda recently registered patents for directinjection two stroke engines, so they look like making a comeback. There is no 2stroke displacement limit for our software, for example you can have a 125, 250, 500, 700 singlecylinder and our modules will work flawlessly. The way a two stroke motor works causes them to be fairly noisy and a bit inefficient. You can work change variables with the bhp brake horsepower formulae.
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. The modern race bike requires precise tuning, knowledge, and expertise to unlock all possible power, ride characteristics, and delivery of power. 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 shall send you a pdf document with the templates for manufacturing your exhaust. Bimotion 2 stroke software has been commercially available and in professional use since 1991. Tsr two stroke racing software motorcycle engineering. All engine development is done exclusively with tsr two stroke racing engine design software and. The single cylinder programmable ignition is designed for use on a variety of single cylinder motorcycle type 2 and 4 stroke engines. Blair of queens university belfast, and published by the society of automotive engineers. They engaged the services of an engineer named zoller to build a 250 racer, which ultimately won the isle of man tt in 1938.
Two stroke engine and exhaust design software north. Each part of the 2stroke cycle can be evaluated and designed. Twostroke engines do not use fuel efficiently, so you would get fewer miles per gallon. Tsr two stroke racing software designed and built his 424cc yamaha rd400. Two stroke engine and exhaust design software post by gerrit. We believe that using this software will help your 2 stroke development or racing results on different types of competition. 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. I use the tsr computer software to calculatepredict the horsepower.
A tuned pipe has a set of cones divergent meaning the cone gets bigger and convergent meaning the cone gets smaller. 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 single cylinder programmable ignition is designed for use on a variety of single cylinder motorcycle type 2 and 4stroke engines. Each part of the 2stroke cycle can be evaluated and designed with computer software programs. We have been advancing our 2stroke engines for over 37 years and we are now offering the software we designed to set many of our world records. Calculates port heights from durations, or durations from port heights. A tuned pipe has a set of cones divergent meaning the cone gets. In motocross its usually a compromise between best peak hp and good early off the pipe power. Taking 49 national records and holding the world record set in. My name is ed erlenbach, im a private tuner specializing in yamaha rd and tz performance in southern california. Moreover you can have advices for the development of the engine thanks to the help of tested formulas for intake, exhaust, blowdown and transfer.
Two stroke performance tuning twostroke all of these detonation triggers are virtually unavoidable, with the exception of excessive spark lead. The tz250b is a vtwin road racing motorcycle produced by yamaha for the 1991 racing season. They are so simple and fun that ive always enjoyed tinkering with them. There are 3 exhaust ports one large central port flanked by 2 smaller side ports boosters. Recently searched for tom turners two stroke racing website looking for his two stroke tuning software only to find out that he has retired and shut the website downbummer. They were in the business of manufacturing economical twostroke motorcycles and stood to profit from changing the twostrokes image. Software for fine tuning and design of two stroke engine by. 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. Does anyone have a clue if his software or anything similar is available. Tsr twostroke racing engine design software at bikelinks. You can also save and load the data by using the provided functions. They were in the business of manufacturing economical two stroke motorcycles and stood to profit from changing the two stroke s image.
How exhaust port timing affects two stroke performance. Estimating twostroke horsepower richdubbya automotive 27 may 05 10. Jun 23, 2015 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. 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. Bimotion 2stroke software has been commercially available and in professional use since 1991. Computer input requirements are indicated for the following software programs. So whether you have a 50cc road bike, a 500cc motocrosser or a classic racer, we will design the perfect exhaust system for you. Dynomationtwostroke engine simulation motion software, inc. In the mid1930s, the dkw company set out to make two strokes respectable. Moreover you can have advices for the development of the engine thanks to the help of tested formulas for intake, exhaust. 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. To say that they were ultimately successful would be gross understatement. Bimotion, mota, turners twostroke racing thanks in advance. Dec 28, 2011 recently searched for tom turners two stroke racing website looking for his two stroke tuning software only to find out that he has retired and shut the website downbummer.
Assign fixed relationships between transfers and exhaust port. It delivers increased spark energy and voltage through the entire rpm range and provides the user with a variety of programmable functions including mapping two timing curves. Software for fine tuning and design of two stroke engine. A simple 3 stage two stroke exhaust calculator based on formulas of g. Pipes, silencers, carburetors, reeds and valves are all popular bolton modifications. Red line synthetic oil 4080312 red line all sport twostroke oil compare motor oil, all sport twostroke, synthetic, 16 oz. The home of ultimate two stroke motorcycle road racing. Two stroke motorcycles have been phased out in recent years by tough pollution laws and fuel economy targets. Cc specialty tools porting and polishing for 2 stroke engines. The old adage of stuffing cases on every project just isnt true any more. Gordon blair programmed the 3d simulator named virtual two. These modifications can be extremely effective when used in the right combinations. We have combos from mild to wild to suit any racing application.
We offer trackside testing for both engine tuning and efi. The v4 racing engines are designed specifically for racing. Thunder shark pro racing 66cc80cc bicycle engine kit 5. From a 49cc racing engine, to a gp 125 engine, or a 1500 mercurial triple engine, or a 250 kart engine, racingsm software suits all.
A sydney engineering company has developed a new twostroke engine that they believe could be used in motorcycles. Two stroke petrol engines are preferred when mechanical simplicity, light weight, and high powertoweight ratio are design priorities. Improve the performance of your twostroke engine with a torqsoft designed exhaust system. Its called crankcase independent twostroke cits and was invented by former south african motorsport engineer basil van rooyen, director of cits engineering, st ives he says advantages over fourstroke are that the cits engine is more powerful, lighter, smaller, cheaper. Msd single cylinder programmable ignition mps racing.
Red line synthetic oil 4080312 red line all sport two stroke oil compare motor oil, all sport two stroke, synthetic, 16 oz. You would burn about a gallon of oil every 1,000 miles if you used a twostroke engine in a car. Twostroke oil is expensive, and you need about 4 ounces of it per gallon of gas. The trend in high performance two strokes has continued towards more case volume, however each engine and application differ. Mota software, 2 stroke engine simulation software, 2 stroke exhaust design. The calculated specific timearea and blowdown are shown. Many things will affect the power delivery of two stroke motorcycle engines. There are many ways to boost the power, one of which is by installing a tuned pipe. Red line synthetic oil two cycle oils summit racing.
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