Brad, my friend jeff has both the tsr and engmod2t packages. The online superstore is open to take orders 247365 and the ts racing shop. Millions of fluid and thermodynamic calculations are made by mota representing the conditions inside your twostroke engine throughout its complete operating cycle. Tsr lan messenger encrypted interoffice communications with no outside interference. Shortly afterward, honda, kawasaki and finally suzuki just gave up, creating a climate where yamaha didnt have to update the yz. The tsr software does take a bit more knowledge of engine theory and operation than the race logic templates do of course. Two stroke engine and exhaust design software north. Techstar tire engine chassis scanning software 1 to 500. Tools of the trade there are two main types of tools used in porting, measuring and grinding. Recently searched for tom turners two stroke racing website looking for his two stroke tuning software only to find out that he has retired and shut the website downbummer. Mota software hi have a look at macdizzys site they have some tests of 5 different software packages. Bigger carburetors, higher compression ratios, altered port timings and expansion.
The prerequsite for racing a twostroke is that you have to mix oil in your gas. A run through for people interested in starting motocross of all the products that are needed to maintain a 2 stroke bike to minimum standards. Check out their website, which has a nice discussion forum. Moto2 imports was founded based on a love of the amazing motorcycles produced in japan over the years that were never available in the us. I use the tsr computer software to calculatepredict the horsepower. Clean the air filter sounds stupid, but you can be sure there are a lot of bikes at the races with expensive racing parts and a dirty air filter. Enthusiasts, tuners, mechanics, gp, drag racing, mx, enduro. We will inform everyone when we are able to return via our websites and social media. From an engineering standpoint the tsr software is pretty lowend, but if you dont have any experience with any cad or cfd software, it is probably your best bet. But then you jump back on a 2 stroke and remember how much fun the lighter weight, less gryoscropic forces, harder hitting engine is. This includes gpderived twostrokes such as the honda nsr250 and yamaha tzr250, sexy v4 powered honda vfr and rvf400s, and the 19,000rpm screamers including the cbr250rr and zxr250r. Robert herring mx mini national champ south africa. A 4 stroke feels just as fun as a 2 stroke when you first get on it.
Does anyone have a clue if his software or anything similar is available. He wanted to develop a lightweight fourstroke motocross race bike never mind the fact that he was neither an expert in fourstroke technology or motocross. Tsr twostroke racing engine design software at bikelinks. Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on youtube. Tsr photo manager sort through thousand of images in minutes instead of days. 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. Short and sweet first ride to test the bike out to see if i have to change anything before bringing it to the. Remembering the first supercross win on a fourstroke. If you have the time and patience there is quite an array of freeware out there, although you have to use bits and bobs of various packages to get where you need to be. We apologise for the inconvenience but know that you will understand. Twostroke waveaction engine simulation motion software. There is a wealth of knowledge contained in this manual.
Decades have passed since i hung around with john and jim. I will get you that info but it will be a few days. Lets journey back to 1973 and read the book that was the two stroke bible of that era. The twostroke versus fourstroke question comes up at regular intervalsso, we are rerunning our shootout to add clarity to the arguments. The difference in power between a dirty and clean filter is probably more than the difference in power between a stock and aftermarket pipe. There are many ways to boost the power, one of which is by installing a tuned pipe. We specialise in honda 2strokes, covering the cr range of motorcross bikes, the nsr250 street bikes, and hrc grand prix 125, 250, and 500s.
It is possible to purchase premixed twostroke fuel from vp. For an updated buyers guide of 2018 twostrokes, click here. The 2017 2stroke buyers guide has almost 50 bikes, and many of them are all new this year. My name is ed erlenbach, im a private tuner specializing in yamaha rd and tz performance in southern california. The intention of allowing 250 twostrokes to compete in the mx2 class was to allow canadian privateers an affordable way to compete in regional, provincial and national level events. Mta 2 stroke mx championship 2017 at glen helen dirt rider. Tsr copy changed files free software for logging changed and modified files. This fuel is suitable for motocross racing, dirt track racing, long. In our last 250 twostroke shootout, which im guessing was somewhere around 2005, the yamaha emerged as the favorite. Personally i feel faster on a 2 stroke, just more comfortable in the corners.
Tsr software creating simple solutions to complex problems. Tsr two stroke racing software designed and built his 424cc yamaha rd400 dragbike to. Tsr twostroke racing engine design software and vannik developments two stroke engine simulation software. Dragbike to develop and prove his racing design software and prove it, it did. Read my expansion chamber theory page to get a full understanding of how expansion chambers work and click here to read more of. It only varies a small amount from the 750 jetski rod. Due to the current covid19 pandemic, we have taken the difficult decision to suspend all publications in the offroad portfolio, including tmx and dirt bike rider. Facebook is showing information to help you better understand the purpose of a page. I am not saying it is perfect but it is very handy for the. Twostroke principles although a twostroke engine has less moving parts than a fourstroke engine, a twostroke is a complex engine because it relies on gas dynamics. Two stroke cylinder porting tips watch this before you start cutting. Examples of this are mx bikes, roadracing bikes and crosscountry. We have been advancing our 2stroke engines for over 37 years and we are now offering the software we designed to.
Brian medeiros racing a smoker at rem last saturday. Measuring the basic measuring tools include a dial caliper, an inside divider, and an assortment of angle gauges. Weve built up a custom wheel set for a project bike being built by twostroke motocross, a website based around 2 stroke dirt bikes. They are so simple and fun that ive always enjoyed tinkering with them. No previous knowledge of the twostroke cycle engine is required just input the required data and then run mota to set in motion this powerful process. With 4 stroke engines, porting, when performed correctly and with the right tools, will result in positive horsepower gains, along with increased fuel efficiency and a smoother running engine. Software for fine tuning and design of two stroke engine. I would either go with a new dentons kit if still available or the jet ski hotrods setup that i sent the info on in the other forum. A twostroke or twocycle engine is a type of internal combustion engine which completes a power cycle with two strokes up and down movements of the piston during only one crankshaft revolution. Cc specialty tools porting and polishing for 2 stroke, 4 stroke, rotary engines. 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. Moreover you can have advices for the development of the engine thanks to the help of tested formulas for intake, exhaust. With 2 stroke engine modification, porting and polishing is the ultimate choice. Tom retired in 2010 after a long and successful career.
Tsr two stroke racing software motorcycle engineering. 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. This is of some benefit in a fourstroke engine, but can be a big gain in twostroke engines. But because of the limited worldwide activity in twostroke engine development, program sales were limited and further development was curtailed.
Developed by pedro, with more than 20 000 lines of code, all the knowhow applied to software comes from us and also a lot from the legendary portuguese 2stroke tuner lufo racing, this software is directed for all 2stroke. Tom turner of tsr offers a program to calculate squish velocities based on combustion chamber dimen. Ever since sometime in the early 80s two strokes have put to good use the. Shiohara later went on to design yamahas yzrm1 when the 500 cc gp championship switched to fourstrokes and became motogp. That is how a twostroke engine completes a power cycle in only 360 degrees of. See actions taken by the people who manage and post content. Cc specialty tools porting and polishing for 2 stroke engines. I think i saw that as of several years ago the tsr is no longer being supported. Tools of the trade there are two main types of tools used in porting, measuring and.
This is in contrast to a fourstroke engine, which requires four strokes of the piston to complete a power cycle during two crankshaft revolutions. There is a huge interest in vintage snowmobiles and their simple two stroke power plants of yesteryear. 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. Tsr two stroke racing software designed and built his 424cc yamaha rd400.
My professional 2 stroke expansion chamber design software is more sophisticated than other programs that only use a few basic formulas. Ive been using cheap 2 stroke oil all my life and finally decided to buy some expensive stuff. Two stroke motocross project yz 125 rad manufacturing. The way a two stroke motor works causes them to be f. Motocross 2 stroke dirt bikes for sale in australia. Premixing 125 and 250cc smokers are making a comeback on the motocross track.