Really cool two stroke cylinder porting software youtube. This small java applet uses design rules according to, and, to size a tuned pipe for a 2 stroke piston engine. Joined dec 3, 2015 messages 10 age 25 location h2k4m1. Varying 2stroke stinger diameter motorcycle engineering. For windows 98, xp 2 stroke wizard tuned pipe pro version b. Racingsm software 2stroke exhaust calculator lufo youtube. Free 2 stroke expansion chamber calculator software update.
The way a two stroke motor works causes them to be f. Nov 08, 2010 and fyi, 2 stroke wizard is a computer program, which does just what youre talking about lays out all the measurements for an expansion chamber after you input all your engine specs. Minimum to maximum acceptable exhaust pulse widths are. Improving the performance of twostroke motorcycle with tuned adjustable exhaust pipe article pdf available in research journal of applied sciences, engineering and technology 12 august. So whether you have a 50cc road bike, a 500cc motocrosser or a classic racer, we will design the perfect exhaust system for you. Cobra drag bike with rider eric edwards jnr 20 tm85 motocross 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. Mota software, 2 stroke engine simulation software, 2 stroke exhaust design. Although there is really no shortage of books on the subject of 2 stroke tuning and preparation, i knew that an active software programme would be able to offer so much more. Mar 14, 20 i got an email saying the new version of the two stroke wizard tuned pipe program is out, and they have a new add on program which creates plans for a duel power pipe, which is a cone inside the expansion chamber made of perforated metal looks like the same stuff used for the smallest pipe in a silencer. There are many ways to boost the power, one of which is by installing a tuned pipe. Improving the performance of twostroke motorcycle with tuned. Fundamentals of database systems elmasri navathe 5th. The tuned nature of a pipe refers to the pipe designers decisions regarding the desired performance characteristics for the motor and the subsequent.
The cylinder pressure drops, and the fresh charge transfers thru the transfer ports, over the top of the piston, and out the. Look very good and i understand this program gave excellent performing pipes to others. Direct comparison between different types of exhausts for the two stroke engine, on the left you can see the engine and its exhaust, in the center the progression curves of the. Suggested by umg lady gaga stupid love official music video song just dance a cappella artist lady gaga. Engine pulls extremely strong from 8,000 revmin resulting in a very flexible power band. Has anyone experimented with varying the diameter of the tailpipe section including silencer to dial in a 2 stroke pipe. Chrome also prevents heat leaving the pipe when running, which is why trad 2 stroke race pipes. I got an email saying the new version of the two stroke wizard tuned pipe program is out, and they have a new add on program which creates plans for a duel power pipe, which is a cone inside the expansion chamber made of perforated metal looks like the same stuff used for the smallest pipe in a silencer. Small values of kh are best suited to grand prix engines with narrow power bands, larger. Pipe has been designed to peak engine at 12,000 revsmin with excellent over rev to,000 revsmin. I use the 2 stroke tuners pipe builder program for my pipes and i try to make them as close as possible to dead on modifying existing pipes that pipe is gonna be a super skinny pipe with a 54mm duameter max expansion in the center and a 26 1 2 lengththat tells ya that theres alot of porting done to the cylinder and are a few mms on each port from running a straightpipe and having. Do it right by doing it yourself this screenshot is sheet 1 of 4 sheets. Free drawer torrent brick page pro setstwo mb for filesonic the. Pipe has been designed to peak engine at,200 revsmin.
Free 2 stroke exhaust expansion chamber calculator youtube. We will recheck 2 stroke wizard tuned pipe when updated to assure that it remains. Bigger carburetors, higher compression ratios, altered port timings and expansion. The tuned pipe is critical to the performance of two stroke motors because it greatly enhances the motors ability to remove exhaust gases from the cylinder as well as improve the flow of fresh mixture into the cylinder for the next combustion cycle. The actual gas leaving the pipe during a particular cycle was created two or three cycles earlier. 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. 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. This coefficient kh is called the horn coefficient, with typical values between one and two. Improve the performance of your two stroke engine with a torqsoft designed exhaust system. Nov 05, 2009 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. You can also save and load the data by using the provided functions. They are so simple and fun that ive always enjoyed tinkering with them. 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. Well ive certainly never tried to join any pieces similar to a 2 stroke expansion chamber but stainless welds much nicer than mild steel.
Two stroke tuners handbook 2 another mistake commonly made, sometimes even by those who have enjoyed some success in modifying two stroke engines, is to believe in a kind of mechanistic magic. Oct 25, 2016 download 2 stroke wizard tuned pipe 1. Engineering acousticssonic supercharging of 2 stroke engines. 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. Chrome also prevents heat leaving the pipe when running, which is why trad 2 stroke race pipes were black though there are other ideas about keeping heat in the head end of the pipe these days. Test your own theories on porting and exhaust pipe design. Acceptable piston stroke is 28mm to 81mm in version 29. Bigger carburetors, higher compression ratios, altered port. 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. The calculations are assuming a speed of sound in the exhaust gas, which is not known exactly. Return to the 2 stroke wizard tuned pipe details page.
Here is the official description for 2 stroke wizard tuned pipe. The program i used for most of the distances and diameters was the 2 stroke wizard pro version 3. This is why exhaust gas sampling on two stroke engines is done with a special valve right in the exhaust port. It assists in evacuating pulling exhaust gases from the engine and also pushing unused fuelair mixtures back into the combustion chamber at very specific moments during the stroke of the engine. Because two stroke motors rely upon the movement of the piston to control critical engine functions such as intake and exhaust timing, a tuned pipe is a critical factor in engine performance. After our trial and test, the software was found to be official, secure and free. 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. I really thought we would have a copy at school, but alas, we do not.
This is a module for complex 2stroke exhaust calculation having in account several variables according to lufo racing tuner philosophy. Just a quick update on the progress of the freeware 2 stroke expansion chamber calculator software. We shall send you a pdf document with the templates for manufacturing your exhaust. We also have a simple 2 stroke expansion chamber design program. This will get you started by providing, for your engine, the dimensions of an expansion chamber with a 2 stage or 3stage diffuser. The first cone is longer in this design but that is to eliminate the need to make a long b. We offer free download for windows, mac, linux, mobile applications. If anyone happens to have a copy of 2 stroke wizard and wants to either lend me a copy or draw something up for me and. The official home page of our 2 stroke wizard tuned pipe. A simple 3 stage two stroke exhaust calculator based on formulas of g. The exhaust port opens and combustion gas starts down the pipe at supersonic speeds. Oct 02, 20 2 stroke wizard tuned pipe is the best pc program for your expansion chamber exhaust design needs. 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.
Software for hobbies software free download soft32. The books ive read seem to indicate a tradeoff between enhanced pipe action and power output reducing diameter and motor overheating with a toosmall pipe has anyone fou. Fundamentals of database systems elmasri navathe 5th edition solution manual. Simply put, the tuned pipe acts as a supercharger for out two stroke engines. It is only the wave energy itself that traverses the whole pipe during a single cycle. We will recheck 2 stroke wizard tuned pipe when updated to assure that it remains clean. More by who is weekly newsletter of discounts, coupons and latest offers for software like 2 stroke wizard tuned pipe 1. Here is my homemade two stroke blender with a 33cc 2 stroke engine with a tuned pipe,,hope you enjoy next video will be the blender in action at our next house party. On a two stroke engine, an expansion chamber or tuned pipe is a tuned exhaust system used to enhance its power output by improving its volumetric efficiency history. Dec 17, 2019 download 2 stroke wizard tuned pipe free. Engineering acousticssonic supercharging of 2 stroke.