To anyone with 2 stroke engine knowledge; can mixed petrol and 2-stroke oil be used again? Or does a fresh mixture need to be created every time?
Topic by Aspiring Mechanic | last reply
I am converting a pocket rocket from electric to run on a weed wacker engine but, the engine rotates the wrong way. any advice on how to get it to run the other way. i am most confused on how to change the timing to fire at the right time going backward. thanks
Question by sirchioi | last reply
I was wondering if any one had heard of attaching a small turbo charger to a lawn mower or weed whacker , if anyone has heard of it could you explain how, as i am anxious to try this with my recently salvaged 2 stroke and just see as much power i can suck from it.
Topic by firemanfu | last reply
Hi all can a diesel run on 2stroke fuel mix if the 2stroke oil was added to the petrol in heavy enough quantities so that 1. It off set the octane rating of the petrol so that it acted like diesel? 2. It was blended with diesel to supplement the mix? The reason I ask is that there is a lot of mistakes made at the fuel pump with people putting fuel in diesel and I was wondering if the petrol was know, that a measured amount of 2stroke oil was added that this would solve the problem, rather than the expensive issue of towing, draining and repairs? I have had this experience and drained most of the petrol and then added motor oil to the new diesel to help lubricate and no dramas. Positive comments please.
Question by Gero wheels deals | last reply
I have an old moped that I got for cheap and I am trying to fix it up. I replaced the carburetor and the new one is a little bigger even though it is off of another 50cc. It insisted on running extremely lean, but I was able to get the fuel/air mix balanced by putting some foil tape over part of the intake to get more vacuum behind it. It will only run right if the exhaust is on so that it is not lined up perfectly with the exhaust port on the cylinder. If the exhaust is taken off it will start first kick, but if it is lined up the way it should be it will not start. I took it off today and when I put it back on as close to the way it was before it would start but is now running very lean, beyond what I can tune out with the carburetor. If I give it full throttle it bogs and has no power, but it has fair power at 1/3 to 1/2 throttle. It also is getting really hot and has absolutely no power once it gets very hot. Yesterday I hat it all just right and it ran with none of these problems except that full throttle was still not where it got full power. Does any one have any ideas about what I have to do to make it run right? Maybe there is no option but careful misalignment of the muffler? --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- It turns out that the problems were that the muffler was clogged, and that it was running too lean at first, but too rich once it warmed up. Thank you for you suggestions.
Question by Jaycub | last reply
Hi guys I built something similar to this https://www.instructables.com/id/How_to_Strap_a_Leaf_Blower_Engine_to_a_Bike_and_Go/ anyways the coil thingy that the guy cut a circular hole for came off my engine. There's magnets in it. I'm pretty sure that the magnets drive the spark plug as there's a small black piece that hooks to the plug. So am I screwed?
Question by thejrb | last reply
I got a craftsman 40cc chainsaw donated from work. Anyone got some ideas for what to use it as? Ive thought about powering a bike with it, using mountain bike gears. Ive thought about using it to make power for at my cabin. What kinda crazy 2 stroke powerd thing would you like to build or see built?
Topic by quadracer | last reply
I am looking to find small 2 stroke engines for cheap/free. I am not sure where to look. The side of the road, craigslist,and ebay have been of no help to me. I need something between 40-50cc and would like some god places to look. Thanks guys!
Question by trf | last reply
I have a mini moto engine which i'm going to use to power a go kart type thing. I need help identifying the different intakes as it looks like there are three holes. I think the middle one is to attatch a throttle cable, but what of the other 2? One already has a pipe attatched to it (right hand side) and the other (left) looks like it has a fuel tap. I'd guess fuel and oil, but I always thought that had to be premixed, so shouldn't there only be one hole? Any help in identifying the different bits would be appreciated. Chip.
Question by chip123 | last reply
I have a 33cc gas scooter (sounds nerdy, I know), on the side I can make out what looks like Moto Rebel but not sure. It was used twice, sat in garage for one year without gas in the tank, then sold to me for $20 (Amazing price for something that's $350 new). Like new! It is 2-stroke but am unsure of the model number. It starts runs on choke between a small margin but won't run on ON, which is above choke on the switch. I think it may need the idle screws adjusted but am unsure. Has new and correct gas oil mix in tank and has primer button. Help would be appreciated.
Question by Electric Spectre1 | last reply
On an Aduino no I would like to make pin 2 an input. Pin 10, 11, 12 and 13 out puts which will go high then low in turn on subsequent pulses on pin 2. I want to drive 4 LEDs one after the other on and off. If I press and release button at pin 2, led 10 comes on. when I press the button the second time, LED 10 goes off then LED 11 comes. on the next input pulse LED 11 goes off and LED 12 comes on. On the next pulse LED 12 goes off and LED 13 comes on.on the next pulse LED 13 goes off and LED 10 goes on again Please help
Question by nyama | last reply
As i am currently making a motor bike and have a 2 stroke engine to put on it.
Question by rocketman217 | last reply
Question by Acepilot42 | last reply
Ok so I have this crazy idea to make a two stroke engine out of paper that runs on hydrogen and well ive allready built part of it just the piston head and cylider and stuff but if i lined the inside of the cylinder with tin foil would that be enoth to keep the paper from burning? and so ya anyways the engine of i have made allready is very sturdy each peace is 10 sheets of paper or more compressed for over 24 hours now the compression im not two worried about because its more of the sheer pop of the explosion that will push the piston down well i guess thats how it is anyways but if the gas ignites anyways with oxygen why have compression for this anyways because the explosion is going to be soooo small anyways that it wont really matter much. the overall size of the engine is about almost 2" tall by about 1" wide on the widest part the bottom . So um I know by now im classified as "CRAZy" but that asside can i get some opinions and ideas plz. thanks MRN
Topic by mrn | last reply
I've just got hold of a rail section car with the above engine fitted. It had not been used for a couple of years but we managed eventually and started playing. The problem I have is it travells in one direction well but in the other direction it 's hard to start and looses power. It also over heats I would say it has something to do with the mag and timing. Can someone please help.
Question by Leachie01
So I got this awesome idea to make a trike with a snowmobile donor. Use the snowmobiles motor and track for the rear "wheel", and a gokart style front end, with 2 wheels, spindles, maybe suspension, etc. Nothing too big, maybe 400cc or less. 2 stroke of course =D. I am proficient in fabricating, welding, and have a full auto shop worth of tools, so the actual construction shouldn't be a problem. However, I need to know some things about the snowmobile drive train. Would the track itself work on dirt, light mud, light puddles (2-4 inches deep), and maybe some sand? If not, are there any tracks available for such terrain? Do most snow mobiles have the engine mounted infront of seat, below, or behind? This thing looks wicked cool in my mind. OH, heres a good way to put it. Like a snowbike (Dirt bike with tracks in back), with two front wheels. Or a honda ATC with tracks flipped rear/front.
Question by LiquidLightning | last reply
i made a motor bike and i rode it over 137 miles so far, it hasn't given me much problems except one day it lost compression so i rebuilt it and i put in a new sparkplug and rebuilt the carb after it was running better than ever and the next day i went to ride it and it wouldn't start so i cleaned the carb again, then it was working again but it was like there wasn't any gas, i used to be able to go 29mph now i can only go 16mph with the wind, if i give it too much throttle it will bog down and slow down, so i can only give 1/4 throttle. i have tried messing with the pin in the carb and the tuning screw but they don't seem to do any thing, what is wrong?
Question by BIGHAIRYDUDE | last reply
Question by annajnel | last reply
The engine is a small Tecumseh 2-stroke - no longer made, one tough little work-horse! I packed the muffler with a copper scouring pad; still too loud and poor back-pressure, which can wreck a 2-stroke, I'm told
Question by dartmouthguy | last reply
I have a Honda 2-stroke CB100NE (1018034) engine which I am trying to get working. This is the first time Ive worked with an engine so my knowledge is quite fragmented. So far the engine will turn over using the kickstart but I've been unable to get a spark. Documentation for this specific engine seems to be quite limited but I found a service manual claiming that the generator goes into the battery which then drives the spark plug via the coil, points etc. However, a friend told me that the spark plug can be run directly off the generator/magneto, and since the engine isn't in a motorbike which would require lights and a horn the battery isn't necessary. I'm also not sure how the rectifier plays into this if I'm not having a battery - is the rectifier only there to facilitate charging of the battery? So my question is, does my engine need a battery to power the spark plugs and if so, do I need to use the rectifier? Any help would be greatly appreciated.
Question by Ikkalebob | last reply
Trying to figure out the wiring to operate 1 actuator using 2 on/on switches. Anyone care to help out? Actuator has built in limit switches. 24" stroke. It will open all the way and door will be closed and then open all the way when the switch is triggered on either end. Same as a hallway light that operates from 2 location in the house. The tricky part I've found is getting relays and switches to reverse polarity. I know how to wire a dpdt switch to move forward and backward on the actuator. But with another switch to do this I've been told I need relays. I don't understand the circuitry and tech talk, so please bare with me. Pictures say a lot, so if you can add photos or links that helps most.
Question by nowrydell | last reply
Does anyone know of a tachometer app for a phone or PC that can estimate gas engine rpm by sound? One would enter options like 2-stroke or 4-stroke and number of cylinders, then hit the analyze sound button. I found one for RC helicopter rotors but couldn't find anything else.
Question by robbtoberfest | last reply
My son and I have always wanted an airboat. However, the price of these Yamaha outboards are out of reach for us. I grew up with a 6 1/2 hp Johnson, but I guess those type outboards aren't available anymore. Are there less expensive motors available for this project? Thank you, Judy
Question by Judy Eggart | last reply
We're not talking about hybrids here; our topic is cars powered by the basic IC-engine that relies on gasoline and not electric motors. Today's gasoline engines are not designed to combust/burn gasoline efficiently. Even with the advent of using high pressure fuel injection techniques that are computer controlled, we still fall short of the mark. Partly because liquid gasoline can't burn, only gasoline vapors burn, and there lies our problem. The same goes for injecting the high pressure droplets of fine-mist liquid gasoline that enters the engine cylinder using our current nozzle ejector technology, it doesn't all burn at the same time! Engine designers assume that these droplets are instantly vaporized by the engine's hot cylinder walls, and then instantly explode/combust when ignited by the sparkplug. Not true, up to 2/3 of the fuel isn't vaporized and doesn't combust until later on in the cycle. The 1/3 that gets almost-instantly vaporized and burns will do so within the several thousandths of a second (Fig-1) it has before the piston moves down its 1/2-stroke (out of today's 4-stroke cycle) completing the engine power-portion of its cycle. This releases power and tremendous heat which indeed vaporizes the remaining ~2/3 of our fuel from its liquid droplet form, but too late. It essentially does so when the power stroke is almost over or the piston is just about ready to move into its up-stroke (2nd stroke of our four stroke cycle) phase. So, because of poor vapo-timing we have 2/3 of our fuel virtually wasted by exploding at near the bottom of the power stroke. This incorrect explosive timing, which happens to most of our fuel, imparts very little energy into the crankshaft because its effective "moment" (a product of explosive force and radial-component distance from crankshaft center) is insignificant by then. Various attempts at adjusting the combustion timing spark hasn't made a significant difference. Even though ~2/3 of the fuel is now exploding and providing a huge force, its small "influence" arm distance is rapidly diminishing to zero, and any huge downward force times near zero arm-length is still zero. Some clarification here, technically thermal-efficiency is not improved, pretty much all of the gasoline gets combusted today. That means the energy of the fuel is almost totally released, but not effectively used. The problem is the timing it takes to convert fuel-injected gasoline droplets into vapor to combust at the correct engine rotational time and extract that expended energy. If you did the math for any size engine rotating at say 3200 RPM, you would find that a 4-stroke engine can only extract that energy from combustion during one of the four strokes. And the time it takes to make that stroke happen is only about 9.4 thousandths of a second or 9.4 milisecs (msecs). Now picture the piston just below TDC, all its valves closed, under pressure and containing all the fuel and air it needs to combust. At this point our deadly cocktail has about half of the 9.4 or about 5 msecs to complete combust after the timed sparkplug ignites it. The half factor exists because the max portion of our power stroke (moment arm) occurs at the mid-stroke of the piston sliding down and turning the crankshaft. If all of our fuel isn't combusted by then, the moment-arm or distance from the piston-center to the crankshaft quickly reduces to zero. Again, only vapors combust within a healthy 2 msecs (Fig-1), while fuel droplets take a relatively long time (>5 msecs) to vaporize before it can combust. Unfortunately nature is stubborn and vaporizes ~2/3 of our injected fuel droplets only during roughly the second half of the power stroke. So this huge amount of energy gets wasted because even though the forces of combustion are huge, its moment arm is rapidly approaching zero. Infinity times zero is still zero! Engine designers/engineers have been plagued by this phenomenon ever since the creation of the 4-stroke gasoline or Otto cycle engine. We need to improve this intermittent combustion/explosion process by combusting all of our injected fuel at the correct timing sequence. This is accomplished by injecting only vaporous fuel which will produce ~3X the power we now get. Another way to state this is, for the same power that we now get from a gasoline engine, if we burned the fuel correctly, we would only need 1/3 the fuel consumption to get 3X the current MPG.
Topic by RT-101 | last reply
I am new to compressed air tanks. I need some details about them. (For an air car actually) 1. How to refill a 4500 psi air tank. 2. How do I know the pressure of air comming out . ( Most Important) Can anybody please provide me a schematic drawing on how do I connect the air tank, the pressure gauges (Gauge 1. which shows the pressure and amount of air in the tank and Gauge 2 which shows the pressure of air comming out) and the compressor with the copper tubes. I read on a site formula for power of an air engine is HP= PLAN / 33000 where P. Mean effective pressure in pounds per square inch. L. Stroke in feet. A. Piston area in square inches. N. Number of power strokes per minute. How do I get value of N for the formula. Thanks for any help.
Question by flyingdutchmen1659 | last reply
I have an idea for a new sport. If you combine golf with archery, you'd get Golfery! The concept is simple with only some minor modifications. Arrowheads now have a golf ball or ping-pong ball for a head. To get a hole in one, the player must hit the flagpole in the pocket. There are (3) 1 foot wide rings concentrically spaced around the flagpole. Inner ring = 1 stroke, middle = 2 strokes, outer = 3 strokes. If the arrow lands outside of the outer ring, the player must pick up the arrow and gently toss it underhand towards the pocket. Other than that, the standard rules of golf are followed. I don't have the equipment to test out my ideas. If someone here would try it out and PM me with the results and any suggestions that would be great.
Topic by javajunkie1976 | last reply
I found a diy project from https://www.instructables.com/image/FU19QM5GH4NN2QX/Building-the-circuit.jpg but i want to use only 3 led(7-segment display) instead of 4 led.. and another problem is this circuit only fit input signal from 12v ignition 4 cylinder ( car ), but mine is 6v single cylinder 2-stroke( motorcycle ).. what i have to modify so than i can make a circuit that can use 6v signal to the ic and only use 3 led(7-segment display.. can any give an opinion or some one that have done this to help..im not to good with electronic but i understand english. :-)
Question by kill_them_now | last reply
I am a hobbyist trying to add a striking feature to an existing clock.My clock is a quartz movement with a set of contacts that close briefly every time the hour hand passes the 12 position. This pulse is used to trigger a solenoid which when energised causes a plunger to strike a bar and produce a resonant bell sound. I include the cct. I am currently using. The 6v. battery powers the 10 ohm solenoid coil & U2 the LD1117 IC which provides the 1.5v needed by the quartz movement. My project is to change the hourly strike from a single stroke to one which strikes the hour the correct number of times to indicate the time, the same as a mechanical striking clock does - 1 stroke at one oclock - 2 strokes at 2 oclock etc.continuing to 12 and then beginning again at 1 oclock. Unfortunately my electronic ability does not extend to using counters and timer ccts so I am looking for help with my project. I would greatly appreciate any help with the circuitry needed to allow me to complete this project. TIA, RMHC.
Topic by RMHC
Is there a way I can clean a 2 stroke gas motor that I disassemble? I want to get rid of all this grease and this oil and if possible, is there a way to remove rust? I tried with water but there is still grease on it
Question by Patented | last reply
It is a 49cc 2-stroke chinese scooter I got for christmas. The electric start won't work, and I'm wondering how to check the voltage to the starter, or the solenoid. Oh, and when I have the keys in and its switched on, and I press the starter button, it only clicks.
Question by Zem | last reply
The GEN H-4 personal helicopter weighs 70 kg, carries 220 kg total, has 40 hp of 2-stroke power, counter-rotating props, and costs $35 K. Check out what it takes to put together:http://www.acecraftusa.com/photos/Assembly/assembly.htmlOr, get a flying motorcycle from Butterfly Gyroplane:
Topic by ewilhelm | last reply
I may be able to get my hands on an old 2 stroke engine. The spark plug threads have gone completly and mainly going for spares. I was wondering if sealing the spark plug hole, fit an electric motor to the drive shaft then separate hoses to the fuel inlet and exhaust could it then pump water or is this another of my hair-brained ideas?
Question by cyberraxx | last reply
So, I will start with what I have in mind. (Might be total rubbish because I don't fully understand). You have a solar collector box, not more than 1 meter square. painted black 1 to 2 cm deep, and probably with glazing over top. The box itself is metal fully closed up and the back is insulated. From the box through the insulation there are some metal tubes that go to another box at back for the cooling chamber. Tubes are constricted so the air sprays through to the cooling box and it goes into steel wool as it expands. On the reverse stroke, it does not go so much through the steel wool because the nozel constriction is on that side not the hot side. Power is taken away from a liquid piston somewhere attached to both chambers or a diaphragm at the back. (It can be water cooled). I want the strokes to be long and slow. Can it work? Temp difference will only be around 40 degrees C and the pumped air ( 2 valves in chamber off of liquid piston) only needs to go to 2 psi. ) I have been in contact with a guy in Germany who made Sterlings that worked with sun heat. But he didn't use Fluidyne (also called liquid piston stirling) and he did not pump air. My specs are extremely low, I only need 60 litres per hour of air at 1 or 2 PSI. It would be very cool to make it from such basic materials. Thanks Brian
Topic by gaiatechnician | last reply
I have a CH80 2 stroke bicycle engine that has a bad oil seal under the magneto. Here are my problems, the seal size is 11.8x27x3.8 and after talking with someone who just sells seals he tells me that I would have to buy the seal from the guy I bought the engine off of. He no longer sells these engines. Even if I could find the same size seal I still haven't figured out how to take the old seal out of the engine. Any help???
Question by birdmannn101 | last reply
I've heard of people mounting small (5 hp or so) Briggs engines in boats to power them. I have a couple of warn out 2-stroke outboards, but they are smelly, smoky, and unreliable. Does anyone know the best way to mount a Briggs (or Tecumseh, Robin, etc) as an inboard? I know there'd have to be shafts and seals, but I'm kind of looking for ideas before I start cutting on the old flatbottom. I have a couple of vertical shaft motors, and one good horizontal.
Topic by skunkbait | last reply
It would be simple with a manual relay switch but I don't want to have to be there to throw the switch. I want a timer to do it each morn and eve so the door opens at one time then next time timer comes on it closes. The Linear actuator has limit switches to stop the motion at the end of the stroke. I need the next time it powers up to reverse motor direction. Also will need to get power from 110v timer switch to 12v power supply to the LA Also if it is powered from the timer I use now to power the lights, they will stay on for 2 hours then off. So the relay must not send power back right away but delay until the power goes off and the next time it powers up then send it to the LA. Or I need a separate battery power source and timer that will just give power long enough for one stoke then off. Not sure how to do that. Any electrical wiz kids out there can help me with this?
Question by Wellthmaker | last reply
Ok, I already posted a question about this. The problem was a mislabeled sticker. Now I have more problems. The problem this time is my dad just randomly came out and started adjusting the idle screws for high speed and idling. It will now not run. I am not sure if he adjusted anything else but I need a bit of help. The engine model number is 1E36F 2-stroke 33cc engine and this is a GS Moon scooter. It has a full tank of gas/oil mixture which is correctly mixed yesterday.
Question by Electric Spectre1 | last reply
Hey guys, I want to make a cheap cylinder head temperature gauge for my 150cc scooter. I have owned one before which worked well but it was rather expensive. I'm more interested in being able to detect a temperature spike and avoid a blown motor than determining an acurate temperature. The last gauge I owned used a probe with a ring on the end that acted as a washer between the spark plug and the head. If I buy one of these probes: http://www.ebay.com/itm/Thermocouple-CHT-Sensor-Probe-Cylinder-Head-Temperature-14mm-/120861470119?pt=LH_DefaultDomain_2 And a digital thermometer with a probe like this: http://www.ebay.com/itm/Digital-Blue-LCD-Temperature-Meter-50-150-Probe-/230650228821?pt=LH_DefaultDomain_0&hash;=item35b3d33055 Could I just splice the wires together and be away laughing? I'd need to find out what the temp range of my engine is first.....my last 2-stroke 150cc ran at about 275F and melted at 400F, 4-strokes should run cooler right? Any thoughts would be appreciated :)
Question by tig5 | last reply
I want to move to Hawaii and am looking to build a boat to live on and use to move down. It needs to have a place to store a motorcycle and room to live comfortably while still being easy on my wallet. I was thinking of using a truck engine for power and a 2 stroke generator with a plywood hull like older boats. to keep cost low and arranging the living space like an RV to make best use of the space. i will be grateful to anyone that can help
Question by abadfart | last reply
I am looking to control a keyboard using output from another computer. The output must control the other computer by the keyboard. or send keyboard strokes through the wireless keyboard adapter. I can not control second computer by a program, ethernet, or usb direct cable. I might be able to use usb if the imput show as if its a keyboard. I can use old style keyboard ps/2 or usb. I,m trying to control a computer that is on a VPN and it wont allow and connection or programs running like I mentioned. I could get by only controlling the mouse of the other computer from the frist.
Question by dbartoletbet | last reply
Hi, I'm trying to design a circuit that will replace the traditional "cox box" in a rowing boat. What I want to have is a wireless microphone that transmits to an amp that I can connect into the boat's existing speakers. I don't care about the stroke rate or timer features, just need the audio. I can solder well enough, and even print pcbs others have designed, but I'm not too sure where to begin with the design. There are plenty of great amp projects on here, but how would I tie that in wirelessly? Thanks!
Question by andrew.spencer.2 | last reply
I'm no designer but here's an idea I've been stewing on for some time. I've hunted but not found any designs for a pedal powered tractor. The very early tractors were very large;could to lots of work; but they only had 2 or 3 horsepower. They ran so slow you could count the piston strokes. The designs were simple and they were work horses. Our new high horse powered gas tools often cann't do nearly as much. The old machines used heavy flywheels; slow to start but they kept on rolling. With the improvements we've made in bike gearing systems why not make a pedal powered tractor that could do serious work with that same heavy flywheel technology?
Topic by Michael Fletcher | last reply
The wall against which i will install my kitchen has a niche about 1 mt wide X 0,45 mt in depth going from floor to ceiling. I would like to install a 2 level shelving system that moves vertically to hold conveniently lets say a coffee maker, a food mixer and other appliances. Any suggestion about components to make a durable thing? I am thinking about a counterbalanced braked manual moving system with linear gear, chains and weight or a servo system with integrated gear reducer, 12 volt motor, stroke limiter, 220v-12V converter and command , plus a linear guide. Any idea is welcome
Question by adyx | last reply
What do I do for break lights and turning signals? I'm very technical minded and good with electrical logic, but I don't know the laws/regulation surrounding that area (but I DO know they are required). I've taken driver's training, so I know all the laws/signs ect... I'm looking for advice from people who've done this before. Have you run into any problems? Catches? I have very little idea what is needed to make a gas powered motor to work. How to you take care of a 2-stroke 50cc engine? How do I mount it to my bike frame? should I look out for something in particular when I purchase an engine? Oh, and I live in Michigan (if there is any notable laws here, I plan to go to the secretary of state soon)
Question by nepheron | last reply