Two stroke pipe calculator download

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. The charging pressure is often in the region of two atmospheres bar and far over that. Varying 2stroke stinger diameter motorcycle engineering. Dynomatontwostroke is a dosbased simulation that was originally released in the mid1990s. This program calculates the dimensions for both double and triple stage diffuser expansion chambers from a few basic engine dimensions. Torqsoft twostroke exhaust bend template programme. Just a quick update on the progress of the freeware 2 stroke expansion chamber calculator software. Estimating two stroke horsepower richdubbya automotive 27 may 05 10. Nov 02, 2019 in the past a tuned pipe would have been tested on a stock engine but the length and shape of the pipe will differ on a tuned engine because of the way it is able to rev higher. The straight pipe sections may also be printed and a full 2d template of the pipe created. 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.

Improve the performance of your two stroke engine with a torqsoft designed exhaust system. So whether you have a 50cc road bike, a 500cc motocrosser or a classic racer. Free 2 stroke exhaust expansion chamber calculator youtube. Ive also got two pipes which are pretty much identical except for center section length, and it seems the shorter pipe loses low end without any real. Racingsm software 2stroke exhaust calculator lufo youtube. A graham bell has a great book on two stroke tuning that has a wonderful chapter on pipe building. This software covers the 3 stage diffuser type expansion chamber exhaust as per equations provided in his book entitled design and simulation of two stroke engines published in 1996. My two best pipes, which work well everywhere, have either a tapered head pipe or an additional smaller divergent cone closer to the exhaust port, in addition to longer cones and center section. So whether you have a 50cc road bike, a 500cc motocrosser or a classic racer, we will design the perfect exhaust system for you. I have plans this winter to put my yz 125 motor in it but i would like to see how this little motor runs with a good pipe vs the stock one that i think is holding it back. We shall send you a pdf document with the templates for manufacturing your exhaust. 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.

Pdf improving the performance of twostroke motorcycle with. Thank you for your interest in dynomationtwostroke designed for windows98xp. Bills pipes mx2 nickel pipe 2stroke motosport legacy url. Freeware 2 stroke expansion chamber exhaust calculator program download at. A plug is only needed at the end if you cant stand it in the freezer so the water stays in. Piston height mandatory parameter if performing any timing calculation. This app can be use for finding inside diameter and length of four 4 stroke exhaust pipe with specifictype of an engine e.

There is a huge interest in vintage snowmobiles and their simple two stroke power plants of yesteryear. It requires values for stroke, piston height, conrod length, and wrist pin offset. Performance fabrications is dedicated to manufacturing the finest bespoke hand crafted exhaust systems available. To edit a copy of this document, go to file at the top left of the page, and either download a copy.

How to download javapipe to use as a standalone application. I have a 2001 cr 125 that drips black oil from where the exhaust pipe meets the muffler. For instance pipe calculators would determine the belly diameter based on blairs maximum size 2. Bills pipes has long been synonymous with 2strokes. For this example we are going to draw the bend layout for the front section of an exhaust system header pipe. 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. Lets journey back to 1973 and read the book that was the two stroke bible of that era. Free 2 stroke expansion chamber calculator software update.

Excellant fit and sound from fmf i bought this for my 02 cr250, really made the bike sound healthier and honestly run smoother than the shorty i had before. Two 2 stroke exhaust expansion chamber calculator for. The way to calculate the return timing and length of the negative wave in a 2 stroke expansion chamber is by this formula. To preserve the original formulas, community editing will not be enabled on this page. We shall send you a pdf document with the templates for. After our trial and test, the software was found to be official, secure and free. Twostroke engine pollution comes from two primary sources. Instead of removing the pipe, plugging one end and adding compressed air, i wondered if i could just leave on bike and heat dent with torch while bike was running. If you dig around on the web it can be found in a pdf here is a good pipe calculator right here on this forum,it uses bells ideas and yields a good pipe with. Twostroke engines do not use fuel efficiently, so you would get fewer miles per gallon. There is a wealth of knowledge contained in this manual. Dont seem like much but throw 20 cuts in there and the pipe. Dec 17, 2019 what was your initial experience 2 stroke wizard tuned pipe software download 2 stroke wizard tuned pipe pro version 2. I wonder how much pressure is inside there at different rpms.

Blair of queens university belfast, and published by the society of automotive engineers. Download 4 stroke exhaust pipe calculator for pc free download 4 stroke exhaust pipe calculator for pcmacwindows 7,8,10, nokia, blackberry, xiaomi, huawei, oppo free download 4 stroke exhaust pipe calculator android app, install android apk app for pc, download. Nov 27, 2018 follow the link to my software site and go to the 2t exhaust calc menu item and download either the stand alone program or a installer package that will create a folder and shortcuts as well as. 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. After download unzip installer from zip file right click file in windows and choose expand and see readmeinstaller. As javapipe is meant for small rc car engines, like 2 to 10ccs or so. Download two 2 stroke exhaust expansion chamber calculator apk 5 for android. It have to fit the exhaust port and even the transfer ports too. May 03, 2018 how to design a two stroke expansion chamber performance exhaust step 2. When the high pressure and purge valve are on, starts the shape building. 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. Download 4 stroke exhaust pipe calculator for pc free download 4 stroke exhaust pipe calculator for pcmacwindows 7,8,10, nokia, blackberry, xiaomi, huawei, oppo free download 4 stroke exhaust pipe calculator android app, install android apk app for pc, download free android apk files at. Ultimate 2stroke pipe repair general dirt bike discussion.

So i put formulas based on that in an excel workbook file to. Note that we want the actual stroke, not the crankshaft throw which will be half the stroke. The most basic form of a tune pipe is shown in the figure below with corresponding wave equations. This is the height of the piston from the lower edge to the perimeter of the. Download the apk file of the application you need for example. Engineering acousticssonic supercharging of 2 stroke engines. Processors with a lower number of cores will run the motax expansion chamber optimiser, as will the latest. How to design a two stroke expansion chamber performance. The calculations are assuming a speed of sound in the exhaust gas, which is not known exactly. He will do one of two things,hang up, or if he is a good one,start explaining the complex nature of fluid dynamics, sonic wave pressures and the effects temperature on the speed and timing it takes to hit an open exhaust port at 6500 rpmsthis being said. It was just bolted on with out any fueling or ignition changes and run. Calculate the correct dimensions for the bottle to resonate right at the rpm range before the engine gets on the pipe which is when there is a bad power dip which the bottle counters.

If you could pm me with a price for each if you could. He also proved that the return waves are generated all along the length of the diffuser and baffle cones. The measurement required is the vertical distance from the crankshaft axis to the bottom edge of the inlet port. Download 2 stroke exhaust calculator for pc free download 2 stroke exhaust calculator for pcmacwindows 7,8,10, nokia, blackberry, xiaomi, huawei, oppo free download 2 stroke exhaust calculator android app, install android apk app for pc, download free android apk files at. Decades have passed since i hung around with john and jim. 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. Improve the performance of your twostroke engine with a torqsoft designed exhaust system. Four 4 stroke exhaust pipe calculator for android apk. Npp neils power pipes handcrafted custom pipes and.

You could prolly fab an aftermarket scooter or 80cc pipe on there. Is it normal for oil to come out of 2 stroke motor exhaust. The back pressure is relative to engine rpm so that it linearly increases to its peak value at peak rpm. You would burn about a gallon of oil every 1,000 miles if you used a two stroke engine in a car. I was fixing some dents in a 2 stroke pipe when i thought of this. Engineering acousticssonic supercharging of 2 stroke. Any donations greatly appreciated, please use paypal link. This coefficient kh is called the horn coefficient, with typical values between one and two. Twostroke engines produce a lot of pollution so much, in fact, that it is speculated that you wont see them around too much longer. This works much better for four stroke pipes than two stroke pipes. There is a very good possibility you can split the pipe open with a two stroke pipe, as the volume is very large. The platinum 2 pipe is platinumplated to protect it and has been designed to offer a stronger power gain in the low to midrange, where the offroader needs increased tractability.

First i had a head gasket problem that you guys helped me with where it was burning antifreeze. A tuned pipe is made of between 3 and 4 characteristic sections depending on the desired effect. 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. Measure the dimensions and calculate the area of the exhaust port opening in the sleeve. The arrangement of the intake and exhaust ports in a two cycle engine affords a unique opportunity to use the exhaust system to influence the intake sequence. The length of the leadin pipe dominated the phase of the. If your pipe is cracked that will have to be repaired first for this to work. One such example is shown below for a 350cc bridgestone racer project, were hardboard has been used as the template material. Years later, even into the 4 stroke era, that hasnt changed. This is why the pressurization of the pipe needs to be well investigated together with the exhaust port, we simply cannot fit any pipe to an engine. Just remember if your cutting a pipe to fit you need to space every cut the same width of the band saw cut to keep the pipe the same length. Im certainly no expert in two stroke exhaust but my understanding of the principles involved it really boils down to accoustic resonance.

The pipe in the pic is a different design and designed in the sim differently than the pipe tested. 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. You can also save and load the data by using the provided functions. He starts with the realization of an header in order to test his equipment, to see how the metal sheet is deforming and the modifications of the curvature of the pipe center line. Two stroke oil is expensive, and you need about 4 ounces of it per gallon of gas. Dxf files for the two cones plus a side view of the complete tuned pipe. This small java applet uses design rules according to, and, to size a tuned pipe for a 2 stroke piston engine.

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. Then, he cuts the two half pipes, bend the side at 90, weld the sheets together. Estimating twostroke horsepower richdubbya automotive 27 may 05 10. The official home page of our 2 stroke wizard tuned pipe. This toolkit offers some basic two stroke engine calculators in hand but also extends to some advanced as well tuning menu. Open the downloaded apk file and install a simple 3 stage two stroke exhaust calculator based on formulas of g.

Stinger sizing considerations the stinger determines the pipe back pressure which combines with the diffuser return wave to lessen it, and with the baffle return wave to increase it. Method 1 and method 2 two and three stage diffuser. Here is the official description for 2 stroke wizard tuned pipe. If this does not describe you please stop and seek professional help as engine damage and serious injury. The performance of two stroke engines for scootertype motorcycles depended greatly on the length and expansion angle of the tuning pipe. For 180 degrees or more of crank shaft rotation, the intake and exhaust systems are open to one another allowing the expansion chamber to redirect the energy in the exhaust to effect the. Jan 19, 2008 he will do one of two things,hang up, or if he is a good one,start explaining the complex nature of fluid dynamics, sonic wave pressures and the effects temperature on the speed and timing it takes to hit an open exhaust port at 6500 rpmsthis being said. Those of us who have grown up in the japanese two stroke. Also, bimotion is professional software, designed to calculate anything.