My grey area with the 2 stroke began with the f/a mixture compressing underneath the piston and I never understood how it got into the combustion chamber. I never knew about the transfer ports. So thank you for this excellent demonstration!
This explains the characteristic smell of the two stroke . Some of the raw mix excapes thru the exaust .sweet! Thank you very much.many many years nobody could tell me!
Wow! You actually cut one in half, that's really great. I'm not exactly new to this stuff but man, thats really above and beyond. Learning tools like that are completely invaluable. Cut aways are probably my favorite tool for engineering explanations, I'm really surprised this is the first time I've seen one of these China girl/Russian type motors cut open. Very cool, sorry for the super long comment 😅 definitely got a subscriber here lol.
Great video! An awesome way to see the steps of the combustion series and pathways. In regards to porting, and perhaps you plan to touch on this in future videos, is the manifold ports. On your cutaway where the intake manifold marries to the cylinder head intake port, there’s an obvious “step” at the bottom that looks like it may restrict a bit of the intake gasses. I hope to see more videos that show things to look for on our China Dolls. Thanks again, bud!
fantastic visualization! you gave me what i needed to know. now im changing my bearings, trueing my piston, trimming the skirt for max airflow, then porting my intake and exhaust, and now jetting... boy, i have a lot of work to do. im still more interested of timing. and i have yet seen a video of the benefits on widening or cutting deeper. so im still on the fence on it. for now i think what i can do will help it tremendously possibly giving me 40mph on my 80cc zeta motor.
The newer engines with these open transfer ports like in the video used on the Zeda Triple 40 come much better stock than the old closed port designs from years ago. The jugs aren't full of casting burrs & ports are already better shaped & angled from the factory. Same with the shape of these open transfer ports that push the intake charge towards the intake side of the cylinder instead of letting it get wasted & blown out the exhaust when it flows straight into the cyl. I bought a $120 Anbull that was good for the money just wish it had 8mm mount studs and hex/allen bolts. It looks like a Zeda Triple 40 minus the 8mm mounts & hex/allen bolts. The stock jetting was actually perfect when I ran it with the air filter off. The spark plug was a perfect brown color, to my surprise.
Excellent video. thank you. 2 questions: why do I see people drill holes in a new piston, and if it is necessary, why is it not drilled at the factory?
I am getting ready to replace my china bearings with the amazon ones you recommend. I have searched all utube videos. I know to use a arbor press on installation of bearings. Installing the oil seals not so much... Install them dry? Use oil? The 66cc Million dollar question I think only Eugene can answer. A bearing seal replacement video would be epic from Hughes Motorized in the future! Thank you
I'm working on a non running Honda Express 50 + am trying to learn and understand the two stroke.. I have basic knowledge of the 4-stroke as a ride a motorcycle and have to fix it frequently.
I need help with my clutch. I pull in my clutch push it forward it's good I let go of my clutch and tha arm doesn't come. Back out it stays there and I'm still able to push it forward when it should be in lock im not sure what it is or how to fix it I'm really stumbled
hello ty for your information,,i have a question i have been throwing around ,have yet to find an answer..recently into small engines ..i wonder when you pull the cord to start engine its threaded into crankshaft ,starts enginge,,then how does it disengage and not spin anymore ,,these are chinese 49cc 2 stokes.
The starter has a cog/gear that pushes it to engage w/ the crankshaft when you pull on the rope. When it is not spinning a spring pushes it away and it no longer makes contact w/ the crankshaft
Hi Hughes, I have a question to ya regarding my motorized bike. I mounted an 80cc 2 stroke kit on a road bike with an in-hub gear, my question is: should I remove the gears system or is it fine if I just leave it there. Love your channel man, your vids have taught me a lot about those kits, big thanks from Romania.
Bra I got a screw stripped in my straight shaft 49cc trans bell hosing is it a other way to get it out then brack it down and putting a a new shaft in it ♥️💪💯
I've never ported engine, but I would like to port out my 49cc. Would this be a job I can learn from TH-cam or would you recommend me not messing with it? My bike is in my videos.
If you're handy with tools you can do the work on these motors. There isn't really a more simple engine that responds as well to modification than these ones.
i have a question. what psi should i put in my tyres? i ride my bike really hard and don't stop for nothing (i live in a really sandy, rocky and sand & mud mix. i don't want to have them to hard and bounce off things and don't want to have them so soft i will end up pinching a tube.
I need help. My sparkplug will get hot and pop out of the engine while riding. What is the problem and how can I fix it? Now every time I put the sparkplug in it comes lose and no longer secure. What going ? How can I fix this problem. Besides that the bike run smoothly.
Air intake leak most likely. Check that carb is fully pushed onto the intake. Then inspect intake gasket & mount. Could be crankshaft seals or even an issue in the case gasket. Spray WD40 on areas while engine is running and if the engine changes sound then you found the leak
@@seanosullivan662 screw in a little on idle adjuster on carb. Most 2 strokes run a little rough when new. I'll adjust the idle to where it's a little slow and use the throttle to keep running. A combination of little blips on the throttle and simply twisting it back a little. Do it by ear
Buyers Beware....the first motor i bought from a supplier came out of the box jammed, so i popped the head and the inners where deeply scarred the second from a different supplier just wouldn't start. So I popped the jug only to find the bottom end mount of the jug wasn't machined smooth..Oy vey
And I'm trying to understand the Reed valve but I think I know when the ignition charge is put into the crankcase which is oil and gas than the read shut so the air doesn't get forced back to the carburetor I think that's it
I understand how four stroke engines work & rotary engines work but up till today I never understood two stroke engines. Now I do.
Thank you.
My grey area with the 2 stroke began with the f/a mixture compressing underneath the piston and I never understood how it got into the combustion chamber. I never knew about the transfer ports. So thank you for this excellent demonstration!
Glad it helped!
This is absolutely without a doubt the best video I've ever seen regarding the basic working of a two-stroke engine.
Thank you. Glad to help
This explains the characteristic smell of the two stroke . Some of the raw mix excapes thru the exaust .sweet! Thank you very much.many many years nobody could tell me!
This is one of the best explanations of how they work I have ever seen. Great video. Thanks for sharing.
Wow! You actually cut one in half, that's really great. I'm not exactly new to this stuff but man, thats really above and beyond. Learning tools like that are completely invaluable. Cut aways are probably my favorite tool for engineering explanations, I'm really surprised this is the first time I've seen one of these China girl/Russian type motors cut open. Very cool, sorry for the super long comment 😅 definitely got a subscriber here lol.
Glad you liked it!
Excellent visual aid! Thank You
Glad you enjoyed it!
Great video! An awesome way to see the steps of the combustion series and pathways. In regards to porting, and perhaps you plan to touch on this in future videos, is the manifold ports. On your cutaway where the intake manifold marries to the cylinder head intake port, there’s an obvious “step” at the bottom that looks like it may restrict a bit of the intake gasses. I hope to see more videos that show things to look for on our China Dolls. Thanks again, bud!
Great suggestion!
fantastic visualization! you gave me what i needed to know. now im changing my bearings, trueing my piston, trimming the skirt for max airflow, then porting my intake and exhaust, and now jetting... boy, i have a lot of work to do. im still more interested of timing. and i have yet seen a video of the benefits on widening or cutting deeper. so im still on the fence on it. for now i think what i can do will help it tremendously possibly giving me 40mph on my 80cc zeta motor.
The newer engines with these open transfer ports like in the video used on the Zeda Triple 40 come much better stock than the old closed port designs from years ago. The jugs aren't full of casting burrs & ports are already better shaped & angled from the factory. Same with the shape of these open transfer ports that push the intake charge towards the intake side of the cylinder instead of letting it get wasted & blown out the exhaust when it flows straight into the cyl. I bought a $120 Anbull that was good for the money just wish it had 8mm mount studs and hex/allen bolts. It looks like a Zeda Triple 40 minus the 8mm mounts & hex/allen bolts. The stock jetting was actually perfect when I ran it with the air filter off. The spark plug was a perfect brown color, to my surprise.
Such an awesome video
Awesome Hugh!
Thanks! More to come
incredible video thank you!
I love 2 stroke engines 🥰😁
Excellent video. thank you.
2 questions: why do I see people drill holes in a new piston, and if it is necessary, why is it not drilled at the factory?
Great visual aid. I just watched your porting video and it makes more sense now that I see the timing in action
Glad it helped
I want to hear him say "inconceivable"
Awesome video sir
boss i am also user of this kind of engine... and now i learn from you that how is really work. thank you boss...
You are most welcome.
Awesome video, sir! Great tutorial.
very clear and with a lots of tips to work with
Awesome job. Thank you.
Thanks for watching!
Great video
Glad you enjoyed it
Nice job! If you ride it, you need to know how it works. (women not included) nobody can figure that out. 😂😎
Amen...err Awimmen
Instructions unclear
Still don’t know how women work
I am getting ready to replace my china bearings with the amazon ones you recommend. I have searched all utube videos. I know to use a arbor press on installation of bearings. Installing the oil seals not so much... Install them dry? Use oil? The 66cc Million dollar question I think only Eugene can answer. A bearing seal replacement video would be epic from Hughes Motorized in the future! Thank you
use oil.... Will do a teardown & rebuild vid here soon
Very informative , thank you for posting this info !
The top is the ignition chamber and the entire thing as you say is the complete combustion chamber
excellent video. When the intake stroke pulls the fuel in is this a one way valve
Awesome video, thanks.
You are the best ,, thank you so much
You're welcome!
Thanks man
Great video!
Right on
Thank You!
purrrrfect - thanks
Great insight my friend!
Thank you kindly!
I'm working on a non running Honda Express 50 + am trying to learn and understand the two stroke.. I have basic knowledge of the 4-stroke as a ride a motorcycle and have to fix it frequently.
Nice model thanks
Thank you too!
great video
Another FINE video indeed :- )
Ok so the gas/oil mix does get into the motor part. Vs… a 4 stroke where the engine part is strictly only engine oil.
like your video . thumbs up
Thanks for liking
I need help with my clutch. I pull in my clutch push it forward it's good I let go of my clutch and tha arm doesn't come. Back out it stays there and I'm still able to push it forward when it should be in lock im not sure what it is or how to fix it I'm really stumbled
th-cam.com/video/zSYN9lYknPU/w-d-xo.html
Thank u sir
Yess Sir...
How can the piston go up in the compression stroke even though it is a single piston?
can change the air fuel ratio with different carb jets i guess?
hello ty for your information,,i have a question i have been throwing around ,have yet to find an answer..recently into small engines ..i wonder when you pull the cord to start engine its threaded into crankshaft ,starts enginge,,then how does it disengage and not spin anymore ,,these are chinese 49cc 2 stokes.
The starter has a cog/gear that pushes it to engage w/ the crankshaft when you pull on the rope. When it is not spinning a spring pushes it away and it no longer makes contact w/ the crankshaft
@@HughesMotorized ty for your rwply.
Hi Hughes, I have a question to ya regarding my motorized bike. I mounted an 80cc 2 stroke kit on a road bike with an in-hub gear, my question is: should I remove the gears system or is it fine if I just leave it there. Love your channel man, your vids have taught me a lot about those kits, big thanks from Romania.
Leave them is fine. That way if you ever remove the engine you'll have a good road bike
@@HughesMotorized thanks man, I'll leave them there
Bra I got a screw stripped in my straight shaft 49cc trans bell hosing is it a other way to get it out then brack it down and putting a a new shaft in it ♥️💪💯
Pop a pic on my Reddit and let's see what is up www.reddit.com/r/HughesMotorized/
Wow that cool you cut it in half
GOOD VIDEO SIR, WHAT LIFTS THE PISTON UPWARD AS IS PUSHED DOWNWARD BY THE POWER OF COMBUSTION🤔
Inertia. The crankshaft is weighted. A combination of the downward force and the spinning motion and the weight of the crank forces it back up
@@HughesMotorized Thank you. And again how is the engine lubricated as we don't put oil in it
@@mahomolemafokwane3087 The gas/oil mix goes into the crankcase and then is sucked into the combustion chamber which lubricates it
@@HughesMotorized Thank you
I've never ported engine, but I would like to port out my 49cc. Would this be a job I can learn from TH-cam or would you recommend me not messing with it? My bike is in my videos.
If you're handy with tools you can do the work on these motors. There isn't really a more simple engine that responds as well to modification than these ones.
Where is the reeds?
i have a question. what psi should i put in my tyres? i ride my bike really hard and don't stop for nothing (i live in a really sandy, rocky and sand & mud mix. i don't want to have them to hard and bounce off things and don't want to have them so soft i will end up pinching a tube.
40psi is what I run
I need help. My sparkplug will get hot and pop out of the engine while riding. What is the problem and how can I fix it? Now every time I put the sparkplug in it comes lose and no longer secure. What going ? How can I fix this problem. Besides that the bike run smoothly.
Locktite
Definitely will give it a shot
How cum the piston goes down but does not stay down what brings it back up?
Inertia. It's moving quite fast plus the power of the combustion is forcing it around
I’m having a problem with my bike the rpms won’t go down it’s just reved up all the time and speeds up supper quick and won’t go back down
Air intake leak most likely. Check that carb is fully pushed onto the intake. Then inspect intake gasket & mount. Could be crankshaft seals or even an issue in the case gasket. Spray WD40 on areas while engine is running and if the engine changes sound then you found the leak
@@HughesMotorized how do you keep the bike running while it’s staying still
@@seanosullivan662 screw in a little on idle adjuster on carb. Most 2 strokes run a little rough when new. I'll adjust the idle to where it's a little slow and use the throttle to keep running. A combination of little blips on the throttle and simply twisting it back a little. Do it by ear
@@HughesMotorized thanks my bike wont take full trottle either
Any videos on truing and balancing a crank?
Look up 2 Stroke Stuffing. That guy is a genius
@@HughesMotorized I have and he is. I just like how you explain things and find it more accessible. Please keep those videos coming
Awesome video! Any plans on doing a four stroke video?
Possibly!
Thanks, now i know how it works :D
Happy to help
What do u think is the best crank to have
I'm not that big into performance building. Never ran one just know a balanced crank would help in higher performance
I use a ZL 40mm and it locked up
Rad
so if you use your kill switch as a Brake ... your still wasting Fuel ...
👍🐿
Thanks for the video I now can fix all of my own gas bike problems and don't need a man to do it for me. More indipendance for me thank God.
Watch my video about 2 stroke engine
u need to be a teacher 😂
Buyers Beware....the first motor i bought from a supplier came out of
the box jammed, so i popped the head and the inners where deeply scarred
the second from a different supplier just wouldn't start. So I
popped the jug only to find the bottom end mount of the jug wasn't
machined smooth..Oy vey
And I'm trying to understand the Reed valve but I think I know when the ignition charge is put into the crankcase which is oil and gas than the read shut so the air doesn't get forced back to the carburetor I think that's it
Cool vid