2 stroke expansion pipe software

Hence, more people are now looking at restoring and tuning these bikes. Pipe has been designed to peak engine at 12,000 revsmin with excellent over rev to,000 revsmin. I have a pipe off my 82 pe175 and a aluminum answer products spark arrestormuffler with removable baffle. I say that because the 6mm aluminium bash plate on my 310 has deep gouges and dings that would ruin a frame. Dynomatontwostroke is a dosbased simulation that was originally released in the mid1990s. How to plot two stroke expansion chamber cones on paper from. We now have a simple 2 stroke expansion chamber design program. New feature of racingsm software, the 2stroke exhaust segment splitter.

Two stroke designmodification software the following are spreadsheets for different aspects of 2 stroke designmodification. Dec 17, 2019 download 2 stroke wizard tuned pipe free. There is only one draw back to all this and that is that this supercharging only happens at the specific rpm that the pipe was designed for. As the forces in a twostroke pipe design have become more wellunderstood. This program calculates the dimensions for both double and triple stage diffuser expansion chambers from a few basic engine dimensions. 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. Would i have to change something on the jetting because of the possible higher exhaust gas temperature. It was just bolted on with out any fueling or ignition. Free 2 stroke expansion chamber calculator software update.

I found most other software work on outdated blair and jennings formulas. It was just bolted on with out any fueling or ignition changes and run. Aug 19, 2014 im looking for advice on pipe guard protection for the shiny new fmf gnarly bolted onto my first ever 2 stroke sherco300 im paranoid itll be beaten to death in no time. I didnt really like many of the pipes but a few were ok but i wanted more. The official home page of our 2 stroke wizard tuned pipe. Forum to provide in depth discussion on various 2 stroke related topics that are not specific to one particular. The way a two stroke motor works causes them to be f. Years later, even into the 4 stroke 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. We offer twostroke exhaust for all of the popular motorcycles and atvs. There are pipes and silencers for racing, recreation, quiet riding and even usfs approved spark arrestors. New version of 2t exhaust calculator it is a freeware 2 stroke expansion chamber exhaust calculator program download at. Without that properly designed exhaust pipe called an expansion chamber, the two stroke engine will have no real power. 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. Performance fabrications is dedicated to manufacturing the finest bespoke hand crafted exhaust systems available. 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 pipe in the pic is a different design and designed in the sim differently than the pipe tested.

We also have a simple 2 stroke expansion chamber design program. Thank you for your interest in dynomationtwostroke designed for windows98xp. Pro circuit has built a reputation around our exhaust systems. Pipe has been designed to peak engine at,200 revsmin. Split your calculated 2stroke exhaust up to 42 sections with regular length or even more with irregular lengths. The worlds leading 2stroke engine simulation software for 3. 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. Making a 2 stroke pipe for the rs100 fabricating and welding cones. The calculations are assuming a speed of sound in the exhaust gas, which is not known exactly. Using the plot cone dimensions from the two stroke freeware expansion chamber calculator i show how to draw a cone plot on to flat papers. After our trial and test, the software was found to be official, secure and free.

Varying 2stroke stinger diameter motorcycle engineering. How twostroke expansion chambers work, and why you should care. These are designed for motorized bicycle 2stroke engines, and the header length. Our expansion exhaust pipe will also give your bike a more throaty sound. Dec 11, 2018 making a 2 stroke pipe for the rs100 fabricating and welding cones.

In short, the expansion chamber creates a pump, by using the. 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. Return to the 2 stroke wizard tuned pipe details page. 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.

The 2 stroke exhaust system uses an expansion chamber the prominent bulge in the exhaust pipe to increase the engines horsepower. Im looking for advice on pipe guard protection for the shiny new fmf gnarly bolted onto my first ever 2 stroke sherco300 im paranoid itll be beaten to death in no time. Engineering acousticssonic supercharging of 2 stroke. As the forces in a two stroke 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. Any donations greatly appreciated, please use paypal link. 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. In addition, they dramatically increase your low and midrange power while still giving a bit of a boost at the top end. The stock pipe is basically a straight pipe anyway but i. This will get you started by providing, for your engine, the dimensions of an expansion chamber with a 2 stage or 3stage diffuser. Hi, has anyone used header exhaust wrap on a 2 stroke pipe.

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. There are many ways to boost the power, one of which is by installing a tuned pipe. Bigger carburetors, higher compression ratios, altered port timings and expansion. Just a quick update on the progress of the freeware 2 stroke expansion chamber calculator software. The calculations are assuming a speed of sound in the exhaust gas, which is not known. Bills pipes has long been synonymous with 2 strokes. This coefficient kh is called the horn coefficient, with typical values between one and two. There is only one draw back to all this and that is that this supercharging only. Engine swaps, custom 2 stroke builds, fabrication and welding. 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. I guess 2 stroke 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 2stroke exhaust system uses an expansion chamber the prominent bulge in the exhaust pipe to increase the engines horsepower. Racing engines with tuned expansion chambers are set up so that the exhaust provides a resonant pulse back to the stillopen exhaust port. They are so simple and fun that ive always enjoyed tinkering with them.

It is the 250cc to 500cc sized bikes that have seen a marked increase in second hand values. Cobra drag bike with rider eric edwards jnr 20 tm85 motocross bike. A complete twostroke pipe has properly tuned header, convergent, belly, divergent and stinger sectionsa difficult process. News and changes to the website are posted here, as well as questions and issues regarding the usage of e2s. Racingsm software 2 stroke exhaust calculator lufo. 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 2 stroke engine. How to pick the best 2stroke exhaust for your dirt bike. We also have a simple 2stroke expansion chamber design program. I read many many books and dabbled with different software to see what parts did what in the pipe. The legendary championshipwinning performance and build quality of the mx2 pipe is. 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.

This software covers the 3 stage diffuser type expansion chamber exhaust as per equations provided in his book entitled design and simulation of twostroke engines published in 1996. 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. A simple 3 stage two stroke exhaust calculator based on formulas of g. 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. 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. Small values of kh are best suited to grand prix engines with narrow power bands, larger. 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. Years later, even into the 4stroke era, that hasnt changed. More by who is weekly newsletter of discounts, coupons and latest offers for software like 2.

Engine pulls extremely strong from 8,000 revmin resulting in a very flexible power band. What will a two stroke run like without an expansion chamber. I have been into 2 stroke bikes for over 28yrs and i have bought and tested many exhaust pipes on all the bikes i have owned to find the best one for my needs. Exhaust pipe muffler for 2 stroke 47cc 49cc engine mini pocket bike condition. Bills pipes has long been synonymous with 2strokes.

Im building a little street legal 30s style hillclimber out of a 73 dt1250. Free download here this program is not a part of mota, but it has been put together by the same engineers as a starting point for those wishing to begin from scratch. This small java applet uses design rules according to, and, to size a tuned pipe for a 2 stroke piston engine. This program calculates the dimensions for both double and triple stage diffuser. My pipe is pretty beat up and loud, so i thought ill give this a try. In short, the expansion chamber creates a pump, by using the momentum and pressure of the exhaust gases, and squeezes more air and fuel into the cylinder during the intake stroke. The official home page of the 2 stroke wizard tuned pipe 4t exhaust header wizard software. Npp neils power pipes handcrafted custom pipes and. Dans motorcycle two stroke motorcycle exhaust pipes. Oct 25, 2011 hi, has anyone used header exhaust wrap on a 2 stroke pipe. Engineering acousticssonic supercharging of 2 stroke engines. This expansion chamber is not the product of simple correlations as for other products that abound on the web, but an automatic design created by mota which. A tuned pipe is made of between 3 and 4 characteristic sections depending on the desired effect.

The muffler doesnt look too much different then before i dropped it by the trans. You can also save and load the data by using the provided functions. A complete two stroke pipe has properly tuned header, convergent, belly, divergent and stinger sectionsa difficult process. How twostroke expansion chambers work, and why you should. Do it right by doing it yourself this screenshot is sheet 1 of 4 sheets. 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. 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 expansion chamber is the most tunable component on the modern two cycle engine and dramatic gains in power can be achieved with the correct design.