Two stroke tuning software

Each part of the 2 stroke cycle can be evaluated and designed. In motocross its usually a compromise between best peak hp and good early off the pipe power. I like the fact that i can see what pressurevacuum is present in the port at the different pistonport positions. 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. I have the book, but its nice to have as a pdf as well and a good reference for those who dont know about it. 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. The most common mistake is to choose the wrong combination of.

Look very good and i understand this program gave excellent performing pipes to others. In the past, carb manufacturers made jet needles that attempted to compensate for the natural lean condition of the midrange but that compromised the jetting at full throttle. Design and simulation of twostroke engines gordon p. They are easy to work with and do not require excessive motor knowledge to achieve desired engine performance. The increase in transfer port timing created well over mm2 of additional port area. But because of the limited worldwide activity in twostroke engine development, program sales were limited and further development was curtailed. We also offer the customer a complete bespoke tuning service so they to can feel that spine tingling rush only a two stroke can provide. Each part of the 2stroke cycle can be evaluated and designed. Bigger carburetors, higher compression ratios, altered port timings and expansion.

Other books to his credit are modern engine tuning, twostroke performance tuning and forced induction performance tuning. Mota is an engine simulation program suitable for everyone from the enthusiast to the university researcher from the beginner racer to the professional tuner. The old adage of stuffing cases on every project just isnt true any more. Softengine dynamometers and engine simulation software. A myriad of different aftermarket accessories is available for you to custom tune your bike to better suit your needs. Bimotion 2stroke software has been commercially available and in professional use since 1991. A tool to tune your two stroke engine, calculate duration, time areas, etc. Computer input requirements are indicated for the following software programs. The businesses and individuals that purchased the original dynomation 2 stroke program were pleased with the capability and accuracy of the software. Each part of the 2stroke cycle can be evaluated and designed with computer software programs.

Twostroke engine pollution comes from two primary sources. In a twostroke engine with piston controlled transfer and exhaust ports these ports are simultaneously open during a major part of the engine cycle. The latest trend in twostroke carbs features a pump that sprays fuel into the venturi from 14th to 34th throttles. This 1973 yamaha mx 250 has got 225 psi cranking compression. 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. I am very proud of the riders i helped and sponsored and there is an appendix. Two stroke engine porting zmod this software made for help out team in first time, but some friend advise this is the time to share. Port matching, porting and trenching twostroke engine cases. This software is classified as a two cycle wave action simulator it will visually display the wave activity of a running twostroke engine. Small values of kh are best suited to grand prix engines with narrow power bands, larger. Unless you have a deep passion for twostroke tuning, are willing to spend money on software and porting equipment, and are comfortable. Assign fixed relationships between transfers and exhaust port.

A lesser work would have surely passed into nostalgia. Motas twostroke dyno will give you and your pc the equivalent of many experts knowledge. The exhaust tuning of a 2stroke is designed to preserve the positive pulse going down the pipe and reflect that positive pulse back up the pipe. Computer design software is used to calculate the msv for head. During this time there will be some mixing of fresh airfuel mix with burnt gas and some loss of fresh airfuel mix to the exhaust system. 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.

Split your calculated 2stroke exhaust up to 42 sections with regular length or even more with irregular lengths. Unless you have a deep passion for twostroke tuning, are willing to spend money on software and porting equipment, and are comfortable throwing away botched cylinders, i would recommend having a reputable professional carry out any desired port modifications. Those of us who have grown up in the japanese twostroke. It took a little longer than i anticipated to receive a copy of dynomation 2 for this article but part of the delay was on my end i took a long vacation a day or two after it arrived. Basic 2 stroke tuning by eric gorr changing the power band of your dirt.

Support racingsm by subscribing our youtube channel. My name is ed erlenbach, im a private tuner specializing in yamaha rd and tz performance in southern california. The software does complete cycle simulation of the whole internal combustion process including the gasdynamics in the pipesducts, ports and plenums air boxes, boost bottles, exhaust boxes etc. Software for fine tuning and design of two stroke engine. Twostroke engines produce a lot of pollution so much, in fact, that it is speculated that you wont see them around too much longer. I didnt like bimotions pipe design software so i bought and used yours. Speed and reliability are two important factors which determine the advantage of an engine. Using twostroke design software to guide me through this i have decided on porting numbers which will give me the power characteristics i want.

If you are aiming for these qualities, modifying your 2stroke engine is a great strategy. Graham bell is an acknowledged expert on engine tuning, with many years experience in this field. For a 2 stroke with expansion chamber and no boost bottle then everywhere except for. Improve the performance of your twostroke engine with a torqsoft designed exhaust system. The computer allows us to compare the variables with existing. The website does not intend to compeed with any other website dealing with 2stroke tuning, and the information shared is not at all as thorough as what you can get from reading the books. Hi performance two stroke porting software program diospeeddemon. Basic twostroke tuning by eric gorr changing the power band of your dirt bike engine is simple when you know the basics. A racing engine exhaust system uses an expansion chamber at the end of the pipe which is basically two cones that reverse themselves prior to the end stinger where the. 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. Basic 2stroke engine tuning information joe hunt rc.

We shall send you a pdf document with the templates for manufacturing your exhaust. The faliure of the 50 mph trike was most likely not caused by wear and tear on the engine, or even damaged parts, but by a simple mistake in the tuning process. A rare technical guide to the fundamentals of the crank train, cylinder heads, expansion chambers, port timing. Two stroke motors are very touchy in the tuning process, if they run too rich, they bog down and quit. 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. Everything you need to know about the twostroke cylinder. Twostroke carburetors are perfect practice for novice mechanics. 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. Twostroke carbs are usually found on leaf blowers, motorized bikes and mopeds. North american twostrokes general twostroke discussion. 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 moped tuning two stroke timing moped tuning. A simple 3 stage two stroke exhaust calculator based on formulas of g. Two stroke engine and exhaust design software north.

Calculates port heights from durations, or durations from port heights. Moreover you can have advices for the development of the engine thanks to the help of tested formulas for intake, exhaust. I am not saying it is perfect but it is very handy for the diy guy out there looking to do some 2 stroke porting. The official home page of our 2 stroke wizard tuned pipe. Two stroke design software the following are spreadsheets for different aspects of 2 stroke designmodification. My new youtube video on the newest version of porting calculator is at. It clearly shows the air fuel mixture as a green mist while entering the engine through the intake track. You can also save and load the data by using the provided functions. Two stroke performance tuning twostroke all of these detonation triggers are virtually unavoidable, with the exception of excessive spark lead. However, you shouldnt just pick any business that you can find anywhere. A little high, but it pulls hard and starts easily. This website and app will help you tune your moped or any two stroke engine. So whether you have a 50cc road bike, a 500cc motocrosser or a classic racer. 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.