2 stroke pipe building software

Engineering acousticssonic supercharging of 2 stroke. Assign fixed relationships between transfers and exhaust port. Cobra drag bike with rider eric edwards jnr 20 tm85 motocross bike. There are many ways to boost the power, one of which is by installing a tuned pipe. Good evening folks, i have been trying to make a two stroke exhaust, and would like to use solidworks to curve all the conic sections, because doing this. Forum to provide in depth discussion on various 2stroke related topics that are not specific to one particular. Racingsm software 2stroke exhaust calculator lufo youtube. Custom pipe guard fabrication is available for all models. Racingsm software for 2stroke development, also for 4strokes in some modules, create 2t exhaust, create 2stroke exhaust. This means that to run motax, you will need a post 2010 computer which is preferably a desktop, driven by an intel i7 4core processor. Test your own theories on porting and exhaust pipe design. The cylinder pressure drops, and the fresh charge transfers thru the transfer ports, over the top of the piston, and out the. New version of 2t exhaust calculator it is a freeware 2 stroke expansion chamber exhaust calculator program download at.

That shape is an important part of the exhaust tuning. Npp neils power pipes handcrafted custom pipes and. As the forces in a twostroke pipe design have become more wellunderstood, designers have been able to create engines that take more advantage of them and in fact require an expansion chamber to run at all. The shape of the exhaust pipe is not simply that of a constant diameter pipe, such as on a 4stroke engine. Hello, im trying to make a two stroke cone pipe exhaust, but cant seem to figure out how to do it. Wrt1d1x2sw where wrt1 is the wave return time for the first part of the wave, d1 is the distance from cylinder port to beginning of diffuser, and sw is the speed of the wave which is determined by the temperature and.

Here is the official description for 2 stroke wizard tuned pipe. But because of the limited worldwide activity in twostroke engine development, program sales were limited and further development was curtailed. Question asked by jeger kongen on jan 31, 2019 latest reply on feb 1, 2019 by ruben rodolfo balderrama. There are pipes and silencers for racing, recreation, quiet riding and even usfs approved spark arrestors. You can also save and load the data by using the provided functions. A complete twostroke pipe has properly tuned header, convergent, belly, divergent and stinger sectionsa difficult process. Is looking pretty good on the nicer areas but i cant get rid of the ugly rusted stuff near the exhaust flange close to the head where the pipe turns. Bigger carburetors, higher compression ratios, altered port timings and expansion. Two stroke engine and exhaust design software north. Two stroke engine and exhaust design software post by gerrit. Two stroke designmodification software the following are spreadsheets for different aspects of 2 stroke designmodification. The next link will go over some basic principles behind the goal of. Im building a little street legal 30s style hillclimber out of a 73 dt1250.

Pipe has been designed to peak engine at 12,000 revsmin with excellent over rev to,000 revsmin. Why do twostroke engine exhaust pipes look so strange. Build 2 stroke exhausts, know how to change gear ratios depending on racetrack, simulate realworld performance with our bike dynamics simulator. Racingsm software has some specific modules that can help tunersbuilders on their race enginesbikes in order to improve performance and reduce lap times. This first link will discuss terms and the 2 stroke cycle. There is this nice animation of a 2stroke engine with an expansion chamber. I have been trying to polish my fmf pipe using steel wool and chrome mothers polish.

There is software out there that will help you immensely with your. 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. Calculates port heights from durations, or durations from port heights. We also weld repair all titanium headers and slipons. Engine swaps, custom 2stroke builds, fabrication and welding.

Bills pipes has long been synonymous with 2strokes. I guess 2stroke exhaust system design is all about tradeoffs, and i think for woods riding it may be better to lose unburnt charge out the tailpipe at high rpm longer pipe then push burnt gases back into the motor at low rpm shorter, but thats just my totally nonexpert opinion. The businesses and individuals that purchased the original dynomation 2 stroke program were pleased with the capability and accuracy of the software. Those of us who have grown up in the japanese twostroke. Four strokes are the future of performance in motor sports. Everything2stroke forum since 2004 a forum community dedicated to all 2 stroke engine vehicle owners and enthusiasts. Torqsoft twostroke exhaust system designer programme. The official home page of our 2 stroke wizard tuned pipe. We use computer design software to maximize power and torque at any elevation. The way a two stroke motor works causes them to be f. Our heads cool the piston better, prevent detonation, and.

We offer twostroke exhaust for all of the popular motorcycles and atvs. New feature of racingsm software, the 2stroke exhaust segment splitter. This pipe design is then verified on our inhouse dynamometer, fit to your particular chassis using the method of sectioned cones, which results in a final product that has a unique works look. Split your calculated 2stroke exhaust up to 42 sections with regular length or even more with irregular lengths. Download it here go to the 2t exhaust calc menu item. What will a two stroke run like without an expansion chamber. This small java applet uses design rules according to, and, to size a tuned pipe for a 2 stroke piston engine.

Now tab down the diameter 2 column entering the numbers 70, 100, 120, 120 and 22. While moving downwards after ignition, the piston exposes the exhaust opening, and the burned gas streams into the exhaust pipe like a high pressure shock wave. 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. My professional 2 stroke expansion chamber design software is more sophisticated than other programs that only use a few basic formulas. It is shaped like an elongated cone when viewed from the side. Mota will accept a singlecylinder design, which will also cater for many multis where 2, 3 or more cylinders of the same basic layout are repeated. For a 2 stroke engine the tuned pipe is the section of the exhaust system that begins at the exhaust port and ends at the end of the converging section. I tried sanding it down but ended up with pitted surfaces and. This coefficient kh is called the horn coefficient, with typical values between one and two. Small values of kh are best suited to grand prix engines with narrow power bands, larger. We test tirelessly to provide a head arrangement with the proper squish band width, clearance, bowl shape and volume to suit each individual combination. The high performance 2stroke engine is a pulse resonance engine which means that the operation in general and the. The basic principle of the tuned pipe is making use of the moving air masses in the exhaust to assist in the scavenging the process whereby the exhaust gases are removed and replaced with unburnt mixture of a 2stroke engine. Mota software, 2 stroke engine simulation software, 2 stroke exhaust design.

Our goal is to achieve the biggest power gains as possible, while maintaining reliability on your 2stroke engine. A performance exhaust system is a characterizing element for any internal combustion conveyance. The exhaust port opens and combustion gas starts down the pipe at supersonic speeds. Twopipe originated 50 or 60 years ago as a costeffective way to add air conditioning. Processors with a lower number of cores will run the motax expansion chamber optimiser, as will the latest.

A simple 3 stage two stroke exhaust calculator based on formulas of g. The calculations are assuming a speed of sound in the exhaust gas, which is not known exactly. Free 2 stroke expansion chamber calculator software update. Next move to the section box and enter 6 for number of sections this pipe has a 3 stage diffuser. The way to calculate the return timing and length of the negative wave in a 2 stroke expansion chamber is by this formula. The legendary championshipwinning performance and build quality of the mx2 pipe is unrivaled and is designed to give you every bit of horsepower and torque gains imaginable.

The exhaust system of a car is one of the most commonly modified areas when a. News and changes to the website are posted here, as well as questions and issues regarding the usage of e2s. Exhaust pipe design with cone layout software by paul crowe if you have ever tried to layout a conic section on sheet metal, cutting just the right piece, that when rolled over and joined on edge, you have a cone with the exact shape, size and angled openings desired, you know its not easy. Pipe has been designed to peak engine at,200 revsmin. Building a custom 2 stroke muffler step 3 duration. Fusion one home l about fusion one l fusion one services l. How twostroke expansion chambers work, and why you should.

A tuned pipe is made of between 3 and 4 characteristic sections depending on the desired effect. The pipe on our tuned 2strokes is gradually expanding in diameter from the engine to the point where it enters the muffler. There are a multitude of designs and endless combinations that can be made to work well. There are a multitude of variables and their effects on the individual powerband targets to be analyzed and considered.

Come join the discussion about your favorite engines performance, classifieds, troubleshooting, maintenance, and more. 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. The stock pipe is basically a straight pipe anyway but i want to pit a straight pipe on it with a new school silencer on it. Making a 2 stroke pipe for the rs100 fabricating and welding cones js garage duration. I have a few different 450 silencers, ill probably use one of those.

Using the mouse move across to diameter 2 and enter 50. After our trial and test, the software was found to be official, secure and free. Pro circuit has built a reputation around our exhaust systems. A 2pipe hvac system is one that uses the same piping alternately for hot water heating and chilled water cooling, as opposed to a 4pipe system that uses separate lines for hot and chilled water. Two stroke exhaust systems are dynamically very complicated yet also very effective tuning tools to manipulate, adjust and capitalize upon an engines power characteristics. The mathematical basis for the calculations of the return waves in eccalc an example of pipe analysis and redesign pipes built using this method my video showing how to make a pipe by hand how eccalc agrees with the real life exhaust pressure graphs from blair four examples showing how accurate eccalc is compared to dyno graphs. They are so simple and fun that ive always enjoyed tinkering with them. Engine pulls extremely strong from 8,000 revmin resulting in a very flexible power band. 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. How to bend a conetwo stroke pipe model solidworks forums.