The official home page of our 2 stroke wizard tuned pipe. The software in addition to defining the geometry of the insert, it also indicates the processing steps for its craft realization. Just give one of our gearheads a call at 18886768853 and they can help you find the best 2stroke pipes for you. This coefficient kh is called the horn coefficient, with typical values between one and two. That shape is an important part of the exhaust tuning. This will get you started by providing, for your engine, the dimensions of an expansion chamber with a 2 stage or 3stage diffuser. 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. Return to the 2 stroke wizard tuned pipe details page. A tuned pipe is made of between 3 and 4 characteristic sections depending on the desired effect. This small java applet uses design rules according to, and, to size a tuned pipe for a 2 stroke piston engine. Bills pipes has long been synonymous with 2 strokes. Bigger carburetors, higher compression ratios, altered port timings and expansion. Test your own theories on porting and exhaust pipe design.
Bills pipes mx2 nickel pipe 2stroke motosport legacy url. Download the apk file of the application you need for example. But because of the limited worldwide activity in twostroke engine development, program sales were limited and further development was curtailed. Nov 08, 2010 it gives concise and complete information on designing an expansion chamber for any 2 stroke engine, including how to design the angle of the diffuser and the other cones for power delivery at specific rpm ranges. Cobra drag bike with rider eric edwards jnr 20 tm85 motocross bike. The pipe on our tuned 2strokes is gradually expanding in diameter from the engine to the point where it enters the muffler. Calculates port heights from durations, or durations from port heights. Next move to the section box and enter 6 for number of sections this pipe has a 3 stage diffuser.
The grabcad library offers millions of free cad designs, cad files, and 3d models. The shape of the exhaust pipe is not simply that of a constant diameter pipe, such as on a 4stroke engine. Free drawer torrent brick page pro setstwo mb for filesonic the. This app can be use for finding inside diameter and length of four 4 stroke exhaust pipe with specifictype of an engine e. Here is the official description for 2 stroke wizard tuned pipe. Engineering acousticssonic supercharging of 2 stroke. Processors with a lower number of cores will run the motax expansion chamber. But because of the limited worldwide activity in two stroke engine development, program sales were limited and further development was curtailed. Two stroke designmodification software the following are spreadsheets for different aspects of 2 stroke designmodification. I didnt like bimotions pipe design software so i bought and used yours. Engine pulls extremely strong from 8,000 revmin resulting in a very flexible power band. After our trial and test, the software was found to be official, secure and free.
The muffler doesnt look too much different then before i dropped it by the trans shop. Assign fixed relationships between transfers and exhaust port. Four 4 stroke exhaust pipe calculator download apk free. 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. Petals reed valve in the 2stroke 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. These are designed for motorized bicycle 2stroke engines, and the header length. Join 7,220,000 engineers with over 4,150,000 free cad files join the community join 7,220,000 engineers with over 4,150,000 free cad files join the community load in.
The exhaust port opens and combustion gas starts down the pipe at supersonic speeds. The way to calculate the return timing and length of the negative wave in a 2 stroke expansion chamber is by this formula. Years later, even into the 4stroke era, that hasnt changed. The businesses and individuals that purchased the original dynomation 2 stroke program were pleased with the capability and accuracy of the software. Open the downloaded apk file and install how to use. Racing engines with tuned expansion chambers are set up so that the exhaust provides a resonant pulse back to the stillopen exhaust port to keep the incoming charge of airfuel in the combustion chamber. This one is handy to use if you are gathering information on your pipe but dont have the formula for figuring out the cone angles. Small values of kh are best suited to grand prix engines with narrow power bands, larger.
Do it right by doing it yourself this screenshot is sheet 1 of 4 sheets. 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. Step 2 click the pipe designer button put these data for the pipe profile for the 8 sections arc x. A simple 3 stage two stroke exhaust calculator based on formulas of g. Of course the steeper the angle the stronger the return wave but also the shorter the return wave, and both the diffuser wave and the baffle wave need. We also weld repair all titanium headers and slipons. You will have to bend the pipes header to fit your particular bike.
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. Small values of kh are best suited to grand prix engines with narrow. Join the grabcad community today to gain access and download. Weekly newsletter of discounts, coupons and latest offers for software like 2 stroke wizard tuned pipe 1. 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. 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. More by who is weekly newsletter of discounts, coupons and latest offers for software like 2 stroke wizard tuned pipe 1. Torqsoft twostroke exhaust system designer programme. Software for fine tuning and design of two stroke engine. It is shaped like an elongated cone when viewed from the side. Two stroke engine and exhaust design software north. Notes on my free spreadsheet of mini 2 stroke calculators. Bills pipes has long been synonymous with 2strokes. I like the fact that i can see what pressurevacuum is present in the port at the different pistonport positions.
Pipe has been designed to peak engine at,200 revsmin. The cylinder pressure drops, and the fresh charge transfers thru the transfer ports, over the top of the piston, and out the. 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. Pipe has been designed to peak engine at 12,000 revsmin with excellent over rev to,000 revsmin. Turbo and even supercharger setups of various configurations can be very useful, however, they are often more complicated with 2 stroke tuning than with 4 stroke applications on a tangent, i did witness a 50cc turbo 2 stroke bike that would do over 150mph, but i digress. Exhaust pipe muffler for 2 stroke 47cc 49cc engine mini pocket bike condition. 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. It gives concise and complete information on designing an expansion chamber for any 2 stroke engine, including how to design the angle of the diffuser and the other cones for power delivery at specific rpm ranges. I have a pipe off my 82 pe175 and a aluminum answer products spark arrestormuffler with removable baffle. Just give one of our gearheads a call at 18886768853 and they can help you find the best 2 stroke pipes for you. Dec 17, 2019 download 2 stroke wizard tuned pipe free. The guy who dipped them for me said all kinds of crud came out of the pipeexpansion chamber.
Now tab down the diameter 2 column entering the numbers 70, 100, 120, 120 and 22. Jul 25, 2007 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. 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. Years later, even into the 4 stroke era, that hasnt changed. You can also save and load the data by using the provided functions. Bigger carburetors, higher compression ratios, altered port. 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. Custom pipe guard fabrication is available for all models. Files 2 2 stroke exhaust pipe 2 stroke exhaust pipe loading.
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