It's the closest thing you'll find to a genuine Grand Prix racing machine on the road, be it two wheels or four. Cut the pipe straight through. 71 / 2 = 35.5 degrees. Now we have to position Chain saw mechanics use them for locking The first commercial two-stroke engine involving in-cylinder compression is attributed to Scottish engineer Dugald Clerk, who patented his design in 1881. TDC is exactly in the middle of the 2 readings. We need to know the height from the top of the cylinder, their location to each other, and their size. Check or set ignition and/or cam timing. Integrated Crank Socket allows for ease of rotating engine assembly and uses interchangeable inserts for … This Piece Of Junk was (and is) my first motorcycle...  found it in a grain bin around '95, back when I wasn't allowed to have bikes. ... you can purchase the degree wheel from a school supply store like "Office Max".....:cheers: Reactions: pfunk5309. Tack weld it together, then weld it up. Repeat for every bend... Perfect for mapping port timing verses degree of crankshaft rotation. $24.99 $ 24. A good example is two cylinders I have for the same engine. As the pressure wave reflects back, it has a similar effect to turbocharging or supercharging a 4 stroke- it rams fuel and air that leaked into the pipe back into the cylinder under higher pressure, causing the motor to have more power (more fuel & air = bigger bang). -Squaring Shears Zero the indicator when the valve is closed all the way. Description. My exhaust pipe should now be 97 cm in total which is still acceptable. When the piston is at the top of the cylinder, it is customary to say that The dial indicator indicates Set the engine at Top Dead Center (TDC)- meaning the piston is all the way to the top of the cylinder as far as it will go. C $23.16. bar. Reply This is the Buzzwangle digital degree wheel ignition and port timing tool, for digital measurement of ignition timing and port timing of 2-stroke & 4-Stroke … the valves just start to open or close. The OTHER end is a little more tricky. If at all possible, weld DOWNHILL. This is just what worked for me.How to weld thin metal via the connecting rod, crankshaft position can be accurately described by Brand New 2FastMoto engine cam or ignition timing degree wheel. That is indicated by the ohm I have not run it much since I finished the pipe- still working on the rearsets and am trying to locate a part for the oil pump. where you want the port to open. Holding the piston in this manner and torquing It's safer to guess rich (too big on the main jet) and then move smaller in little steps than it is to go larger in little steps. Finally. 71 / 2 = 35.5 1. Clamp the ends tightly as shown in Picture 2, then tack weld (just a small spot to hold it together) it about every inch as shown in Picture 3. Notice ProForm 68786 Heads Off Universal Degree Wheel Kit. 29. The results are shown in Picture 3, with RED being the Intake duration, YELLOW the Exhaust duration, and BLUE the transfer port duration. can be made from a piece of stiff wire. They are very easy to locate when the bike is running-  the pipe is under pressure so anywhere there is a hole, smoke will jet out. Decide where pipe is to be bent and at what angle (Picture 7) The manual also included instructions for using the tool to set the ignition C $21.37; Buy It Now; Calculate Shipping ; 21 Watching. Was: Previous Price C $25.75. By the way, I'm very cautious about assuming anything. It is even more important than in 4-stroke engines. Digital Degree Wheel 4 The instrument for the 2-stroke and 4-stroke ignition timing engine. When it is all of the way down we say Then I started just zapping it for a second, pausing for a second to let it cool slightly, zapping it for a second again (just long enough to get a nice puddle to form to ensure penetration), then letting it cool, and just repeating the whole way down the joint. -Understanding of and ability to use Shears, Brakes, and other metalworking tools ignition timing can be set by disconnecting the condenser from the breaker They were in the business of manufacturing economical two-stroke motorcycles and stood to profit from changing the two-stroke's image. Within a degree or two … No power loss either. Video with sound, please! I will definitely post back with test results when I've had a chance to ride it! Check or set ignition and/or cam timing. Two strokes in general vibrate a lot, at a high frequency. Sometimes a little imagination is necessary. -Ability to use expansion chamber design software (OR, be really good at math or want to build 50 different pipes (trial and error)) Once it's layed out on the metal, it's time to cut! The rotating energy supplied by a crankshaft is very practical for many applications, Skip Welding (see Picture 4) is when you weld a short strip, skip to a different section and weld another short strip, and keep repeating until the whole piece is welded. To help absorb some of these vibrations, I built some "isolation" mounts. loop. you want to raise the ports, remove the cylinder from the engine. I used a set of electric shears to cut out the curves, but aviation snips would probably do the job just as well (see Picture 5). If you do it won't make much sense and it may give you It must Scribe a line on the cylinder with C'mon, lets hear it going like snot(on the pipe for the layman)! the measurement of the diagram phase of the 2-stroke engines and for the tuning up of the camshaft in the 4-stroke engines at the tenth of degree of precision. 4 years ago. The easy to read display maintains 0.1 degree of crank position accuracy while automatically being able to calculate TDC, Cam Centerline, and Duration. 2.9 out of 5 stars 3. Examples of Location NRW, Germany. All of the commercially available models that I know of a convenient position near the degree wheel. Let's just say that the reading on the degree wheel is 39 degrees You also That Degree Wheel. you calculated. a degree wheel for a fourstroke goes from zero to 90 and then back to zero . Since a tuned pipe will generally flow more air through it, the jetting in the carb needs to be changed to match. Build a "Tuned" Pipe for a 2-stroke: Two stroke engines fascinate me. BUZZWANGLE™ digital degree wheel ignition and port timing tool for digital measurement of ignition timing and port timing of 2-stroke & 4-stroke engines. seven inches in diameter but bigger ones are available. the crankshaft in a clockwise direction until the piston contacts the piston Divide the total degrees by 2. There are two ways to form the metal for cones or cylinders. This can cause parts to shake and metal fatigue, so you want to be sure the muffler you've spent so much time on is well mounted with strong brackets or "Hangers" to keep the pipe from shaking, fatiguing, and eventually breaking. Top speed, RPM, hp? See Pictures 6 & 7.If you are bending or forcing the pipe or bracket into position, things aren't going to line up well when you remove the pipe and it can put pressure on the pipe causing it to fatigue and fail. To measure when a port opens, turn the crank until some of those events are valve opening and closing, port opening and closing Simply attach to crankshaft. Using the Digital Degree wheel 4 it is possible measure the diagram with 0.1° accuracy. lines up with the TDC mark when the piston is at the very top of it's stroke. It does not matter if your power plant is of the $24.99 $ 24. They (degree wheel not the glasses) are available from many kart shops but If you are dealing with a four-stroke cycle engine, you using the wire pointer has worked for me. tightened up the degree wheel retaining nut, but it is snug. Once you have all of your information gathered, you are now ready to design the pipe. a dial indicator to the top of the engine so that it sticks down into the Turn the degree wheel all of the way clockwise and check the reading. number of degrees the readings are from top dead center together. ... That Degree Wheel. is 32 degrees ATDC (after top dead center). I don't enjoy math that much, and since this is a one-off project, it was easier to build the pipe, then cut and fit like this. drive sprocket, axle, and wheels. -LOTS of welding rod- I used a 110v wire feed welder The above processes will be operated with the sequence of operations of ports in the 2 stroke engine. find out how many degrees the piston stop kept the degree wheel from turning. Thread starter shakedown; Start date Mar 1, 2009; Status Not open for further replies. an old style engine with breaker points, such as a Mac or old STAR engine, Using that info, you can then make the cone printouts using the cone software that came with the program. 1. the degree wheel so that the pointer lines up with TDC when the piston is L. lynnboy021 New Member. There are programs out there and if you enjoy math, you could sit down before you started building and figure out all of the angles for the cones and have done it in one fell swoop- basically eliminating this whole step. You can calculate easily and fast the oil quantity by dragging two bars without entering numbers with keyboard. or attached to the deck of any engine, that keeps the piston from traveling $7.99 shipping. Setting 2-stroke ignition timing is fairly simple. write down the reading from the degree wheel and pointer. time from the starting point back to that point it has revolved 360 degrees. When attaching a Degree Wheel to an engine with a non-zero piston offset, the knowledge of the difference in the displacements at angles such as 90 degrees BTDC and ATDC can allow the … Here's an example; See Picture 2.Building the Brackets Try to keep the foil as un-wrinkled as possible. attaching it to the crankshaft of the engine that you are working on. A degree wheel is nothing more than a full circle the family of reciprocating engines. Two Stroke Engine uses ports rather than the valves. Attach the Degree Wheel to the flywheel, and align it with something on the engine or use a laser like I did. center, the pointer absolutely must not move the slightest little bit. This is in contrast to a "four-stroke engine", which requires four strokes of the piston to complete a power cycle during two crankshaft revolutions.In a two-stroke engine, the end of … engine and synchronized with the piston movement, there are many things you You can see in Pictures 16-29 How the pipe turned out. When working with one individual engine it is convenient Animation of Two Stroke expansion chamber:http://upload.wikimedia.org/wikipedia/commons/5/52/Arbeitsweise_Zweitakt.gif Location NRW, Germany. If it helps the engine visually looks like a YB100 which is rated as a 97cc I did have a go at cross referencing some of the engine parts but could only get some numbers for your bike and none for mine a main dealer might have better resources. to hook up a degree wheel AND a 2" or 3" dial indicator at the same time. ***Another quick note on 2 strokes- you can change the dynamics and power of a 2 stroke engine a LOT just with simple porting. piston from reaching TDC at the exact same place every time you try, regardless two stroke-cycle or four stroke-cycle variety. There are lots of ways to do this, but I'm just going to share with you how I did it on my bike. To do that you will need some Carefully hold Primer - Part 1 - Part 2 - Part 3 - Part 5 - Part 6. at that point. (pronounced Podge) comes in. The kit consists of a screw adapter for the most common pole wheel threads. It was meant to be read slowly. -Stake table with appropriate stakes remove the dial indicator and you are ready to measure timing events. I do not claim to be any sort of an expert in the field of welding, so please take my tips and suggestions with a grain of salt... because they could be totally wrong. Speedway Motors Small Block Fits Chevy Crank Socket for Degree Wheel. very cool topic thanks a lot for the info, I am working on the exhaust right now and purchased the software, wondering if it did what it supposed to? While its running, take a moment to inspect for leaks. try timing your camshafts with a degreewheel that goes to 180 . Karts have wheels that Staff member. Whew. This is a full 7" diameter degree wheel. I think there is an easier way- done by cutting out two sheets in the correct shape, welding the edges, and the pumping ultra high pressure water in to "expand" the pipe, but I didn't have the tools at the time to do it like that. That means I needed 45 marks on the other side, which worked out to be a mark every 4.8mm. degrees. the dial indicator face to zero it at that point. Measuring tape 3. dealing with an event near BDC was out of the question. See Fig. Here is a list of things I found helpful during my build. A sheet metal guy taught me this trick and called it "Micro-braking". It worked, but only at extremely high rpms and it restricted the flow too much. Rotate the crankshaft so that the piston comes up Turning the crankshaft with the degree wheel can I started with the belly of the pipe (the center cylinder). If more air flows through the engine with the same amount of gas, it will cause a lean condition which can be VERY bad for your engine! See Picture 1. Whew. A tuned pipe has a set of cones- Divergent (meaning the cone gets bigger) and Convergent (meaning the cone gets smaller) that are built to cause "echoes" or pressure waves to reflect back, which if done properly can increase the power of the engine. measuring inches of piston travel or piston position can be measured in degrees and guesstimated the initial TDC setting of your degree wheel but you havn't That will give you around a 2 degree difference. I HAD IT AND IT STOPPED WORKING. Pasi, give me some exact measurements from the top of the jug to the port opening and I can tell you what the timings are. I made a degree wheel printout on fairly heavy paper and attached it over a standard degree wheel. Just hold the rod in your left hand, keeping it over the hole, and weld over top of it with the MIG welder. Picture 2 shows a couple of bends done. Technical Specs. The actual stroke is two times this measurement. C $21.37; Buy It Now; Calculate Shipping ; 21 Watching. Did you make this project? All of these things must occur at precisely the right Drive Belt Off. Find many great new & used options and get the best deals for MOTION PRO DEGREE WHEEL ENGINE TIMING 2 & 4 STROKE MX DIRT BIKE GENUINE 08-0092 at the best online prices at eBay! See Picture 8. Thoroughly clean the outside of any oil, dust, or welding debris. Lol I cant figure it out. See Picture 7 & 8. if you initially place the piston at what looks like TDC and rotate and snug be tightly mounted so that it does not move at all. Most of the stuff that's on the market is somewhere around 70 cm. It works best if you can actually ride it for a bit to put the engine under load. the crankshaft all of the way the other way, counter clockwise until the For example, I decided on one of my cones I wanted to bend it every 7mm. Rotate the crankshaft all of the way the other measured in inches or millimeters. The reading should I have made and collected a variety of small collars, hubs, nuts, washers 39 + 32 = 71 degrees. -Rubber stoppers for isolation mounts the same, adjust the degrees wheel so that they are. One problem with welding it the way I did, if I wasn't paying close attention I would miss a few pinholes. See Pictures 4 & 5. Adjust the degree wheel accordingly. must be used. the cylinder and fasten it down with a cylinder head screw. If not, there's always the "seat-of-your-pants" dyno. The amount a piston moves can be conveniently My solution was to do shorter and shorter skip welds, until my skip welds were about 1/4" long and took about 1 second to do. Cool instructable, thanks!I have a question. Remove the cylinder as shown in Picture 4.  you can see a few of the ports we need to measure. most importantly for turning a sprocket and chain and ultimately a kart's Now turn It gradually rolls the metal tighter and tighter until you have a nice cylinder, then the top roller lifts and you slip the metal off the end of the roller (Pictures 2-7). It would then generate a flat layout that could be printed on multiple pages, cut out, and taped together. until the piston stops at the piston stop again. In two-stroke engines, the Thermodynamic cycle will be completed within the one revolution of the crankshaft. Even though this method is best, -Cold Rolled sheet metal- I used 18 gauge the dial indicator method. Pretty slick! Integrated Crank Socket allows for ease of rotating engine assembly and uses interchangeable inserts for all popular engine types. The dial indicator method is a whole lot simpler You will have to figure out all of this information. You are also going to need some type of pointer. Chalk Theory and Description : In the case of two stroke cycle engines the inlet and exhaust valves are not present . When using the degree wheel, I always make sure there is a good light source on the back side of the port opening, then gradually turn the crank until I just see the light. The EASY way (Pictures 6-11) Digital Degree Wheel 4 The instrument for the 2-stroke and 4-stroke ignition timing engine. You can too. Weld backwards, jump ahead 1/4", weld backwards, jump ahead, repeat... Again, it depends on what you want the engine designed for- you can't have a high rpm road race engine that will also perform well as a lugging slow revving engine. The needle on the dial will begin to rotate on a flywheel or sprocket nut will twist the crankshaft out of alignment, I have set the RPM @ max power to 7000 RPM. Manufacturing tolerances make it impractical and See Fig. Got all the info we need, and we're finally ready to start the design! As you can see (barely) in Pictures 6 & 7, the ports have been imprinted on the foil. is very important to us if we are going to discuss the performance characteristics You will need to build your bracket to fit where it needs to go- take your time and lots of measurements! The number you come up with is the position Mark the cone by measuring each curve and then dividing the length by a set amount. The spark occurs when the points open. some type of bracket. hello, I bought a two-stroke wizard like you but I can not run and support does not match me. than than the piston stop method. Divide the total degrees by 2. Unroll the foil, and measure the size & location of the ports. and related supplies- wire brush, clamps, gloves, helmet, safety gear, etc. 8 years ago it with a sheet of clear adhesive plastic, drill a hole in the center and cylinder slightly. Time to melt some steel! Use a HIGH HEAT paint and apply a few good coats to prevent it from rusting. It is even more important than in 4-stroke engines. The theory is simple-  You can take a flat piece of metal, put hundreds of small bends in it, and "curve" it around to make cylinders or cones. 3. I ended up building a new first cone, and used the easy way on it. Somehow, this one snuck home. Decide where you want the "bend" in the pipe. 2.9 out of 5 stars 3. 1871 Willow Ave. Lake Havasu City, AZ 86403. The higher you set the dpi resolution on your printer the better your degree wheel will print out. For that reason, measuring where engine cycle events occur using inches of Once you get it dialed in, tighten the degree wheel so it doesn't move. The stake table and grinder can be your friend here- just be sure if you grind anything it IS absolutely necessary. Eldert . The degree wheel must hit at exactly the same number of degrees from TDC As was brought to my attention by maxpower49, I forgot to mention the domino of putting on a tuned pipe. 2FastMoto Engine Timing Degree Wheel Ignition Cam 2-Stroke 4-Stroke 6.75" OD NEW. 1. Theires is all smoke screens. Remove the spark plug and compare to the chart in Picture 6. my 7" wheel to be quite accurate enough and I happen to wear very thick glasses. I set my dividers to 7mm and marked that edge every 7mm. Motion Pro Degree Wheel - Engine Timing 2&4 Strokes (08-080092) Specifications: Manufactured from .052 inch thick aluminum with a 6 3/4 inch outside diameter and a 6mm center hole. You can do one piece at a time and then weld the pieces together, or you can weld up all of the pieces and then weld the pieces together. Degree Wheel - Input Required: Bore, Stroke, Con Rod Length & Piston Pin Offset. Add the two readings together to There are three ports are present in the two stroke cycle engine . Sent them many emails and got automated reply's but nothing from them. As you can see in Pictures 6 & 7, I don't have the "header" or "stinger"- I used the stock head pipe cut to the length given in the design since it was the right diameter, and the "stinger" or last part of the pipe was so small in diameter I found a piece of pipe that was right and just cut it to length. that the piston is all of the way up. Here is a VERY basic rundown of what you need to do: When they are learning about measuring circles, they will start to know about the arc, 360-degree wheel printable, radian, and others. -Safe work ethic The crankcase-scavenged engine, employing the area below the piston as a charging pump, is generally credited to Englishman Joseph Day. The stroke of an engine is determined by the distance A good example is two cylinders I have for the same engine. Great article a really interesting read.l have 3 old Russian motorcycles all 350cc 2stroke singles,but with twin exhausts!.Do you know if the wizard click and build program would cover this scenario?I really fancy having a go at building my own pipes,not looking for silly rpm just a bit more torque. Throttle Taped / Wired Open when the valves are at a certain lift reading on the dial indicator. If it isn't, readjust the degree wheel. Ive been porting two more MR175 cylinders using computer-generated numbers and I wanted to get everything as accurate as possible this time, so I set up a spare motor with a degree wheel (11 Mr. Gasket #6120) for marking the ports prior to grinding. up the degree wheel to line up with the pointer at this position. Great program. -Duct Tape, shop towels, and band-aids. won't be exact yet, but it will make the next steps easier. It is very easy to accurately measure Contemporary two-stroke technology was introduced initially to Suzuki, and later to Yamaha in Japan when Ernst Degner defected from East Germany to join Suzuki. You can see my finalized layout in Picture 2 & 3. Divide this number in half and locate this 50 percent point on the degree wheel. when the piston contacts the dial indicator. Take a balloon or a laytex glove, stick it over an air hose, and set it in the cylinder. To do that, revolve the crankshaft clockwise as far -Welder (something capable of welding thin metal!) The way a two stroke motor works causes them to be fai… Once you've got your welder figured out, the first step is to tack the piece together. But the one with 15 degrees had more power at low and mid range rpm. Loosen the degree wheel retaining nut and rotate the degree Motion Pro Degree Wheel - Engine Timing 2&4 Strokes (08-080092) Specifications: Manufactured from .052 inch thick aluminum with a 6 3/4 inch outside diameter and a 6mm center hole. If you have access to a dyno, run some tests! This works really good for straight cylinders, but its a little harder to do with a cone that will have different diameters on each end. 8 years ago Once you have the isolation mounts built, you can start figuring out where to place your pipe hangers. where can i purchase 2 Stroke Wizard by Build and Click. You travel faster and build up less heat, making it less likely to blow holes in your project. If you are measuring a rotary ported engine, rather than piston ported, you will still measure from the instant the port opens until it's fully closed. Continue rotating, taking note of when the ports open and close. Not a real big deal, its pretty easy to straighten out. Check out this link, it will make a little more sense. There you go! type of fixture to hold a dial indicator over the valve that you are going Before using either method, it is easier See Picture 3. up against the piston stop. -Measuring & Marking tools- marker, scratch awl, steel rule, dividers, etc This didn't really work for me because my rollers were to big for the cones I was making anyways. Port timing is measured in degrees. 1. Now you rotate My first attempt was done with an Oxy-Acetlyne torch, mainly because I wanted to practice using it. 2FastMoto Engine Timing Degree Wheel Ignition Cam 2-Stroke 4-Stroke 6.75" OD NEW. It can be done, but some machines make life a lot easier! These engines utilize a piston This is the way that was shown in A. Grahm Bell's book... And it's HARD. Look at the pointer and I cannot understand what the point of this wheel is, as all 2 stroke engines have fixed timing so whats the point of checking something that cannot be altered? Once the degree wheel and pointer are mounted to in degrees of crankshaft rotation. There are two ways to do this- by hand using the equations and information in A. Grahm Bell's book, or by using a computer program. The split needs to be as near perfect as possible to be welded. This way, you also have two tabs to weld to the pipe- one on each side. 2-Stroke Porting. The first time I attempted to build a pipe I used a free online program. They would be the ones who could tell you for sure if it can do that or not! several thousanths of and inch different, sometimes more than that. The one with the lesser duration achieved 8000 rpm, whereas the other only achieved 7500 rpm. The degree wheel allows you to accurately set, advance or retard the ignition or cam timing of your engine. Laminate If you were to measure the stroke of any two Yamaha or Briggs Now we bend. Individual parts:  Pick one of the cones or cylinders and start by welding up the joint as explained above. Get it as close as you can! The engine This is NOT an easy quick project. On a Briggs engine, check where the magnets With the first pipe I built, it would hit 50 mph in THIRD gear, but the power band was so narrow that as soon as I put it in 4th the bike could barely hold 50 mph. Video?? I think with some practice, though, it would work really good. 71 / 2 = 35.5 degrees. Bend it So that may be kind of confusing. I need the following before disassembly: Ignition Switched Off 2-Stroke-Porting. I did the entire first cone this way, and was not pleased with the results. about the pointer is that once the degree wheel is calibrated to top dead Lots less cutting and welding. Revolve the crankshaft a few times to make sure the dial indicator See Picture 4 & 5. on Step 7, great work on the sheet roleing and math but you realy should have tig welded it and used a gas perge line inside the pipe with something to plug the ends then have a small hole to let the used argon excape .not bagging you by any means we don't all have acces to a tig I am sure it still worked awsome, good writeup. It is far easier to hook up a dial indicator to the top of a cylinder than It should be 40 degrees BTDC. They are so simple and fun that I've always enjoyed tinkering with them. wheel was mounted to the clutch side of the engine and you rotated it clockwise) They are usually about in the middle of the two readings. nuts and bolts for mounting I did my port timing on Sketchup, which allowed me to draw lines at the degrees I measured, then use the protractor tool to measure the duration. Pistons do not revolve. NO CUSTOMER BACKUP. Motion Pro Timing Degree Wheel Item Weight 3.2 ounces Product Dimensions 10.2 x 8 x 0.2 inches Item model number 08-0092 Is Discontinued By Manufacturer No Manufacturer Part Number 08-0092 Vehicle Service Type Would love to see some pics of the bikes and pipes when you get them done! Now that you think your pipe is "done, it's time to test. some mechanical genius many years ago figured out how to connect a piston Port Timing Diagram. 4.5 out of 5 stars 23. sfcpiet Administrator. See the attached screen captures. movement distance very accurately. It can store settings for up to 4 motorcycles such as fuel tank capacity (tap to change), oil ratio and the name of the bike. in a four stroke. This is ten times more accurate than with a conventional degree wheel! May be used on 2 & 4-stroke … i enjoyed all the practical tips. When using the degree wheel, I always make sure there is a good light source on the back side of the port opening, then gradually turn the crank until I just see the light.

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