Four things I want to say about this one: 1: AWESOME 2: Because heads are so easy to replace, let's see one of these actually working. Belt it to a fan or something, put a load on, get the Rs up. Let's see it in full 2khz strobe mode! 3: The misfiring is a mixed bag. On one hand, so many skipped cycles is keeping it ice cold, on the other hand, it would look cooler if it fired every cycle. 4: I think this engine would look even better if you were to do a collab video with Taufledermaus or The Slow Mo Guys, such that we can see at ludicrously high framerates what's going on in there. In real time it's just a flash, at 28,000 frames per second we'd be able to watch the flame front as it spreads through the combustion chamber.
Fired every cycle? Its going to spark every time the crank triggers, but its only gonna ignite when the fuel air mixture is present on the correct stroke.
Take a closer look at the valves aclo982007. That engine is misfiring big time. It should fire once every two revolutions and each valve moves only once per two revolutions.
Nice work guys. You never really think about how fast pistons and valves actually move inside a running engine until you see it for yourself. I've been a mechanic all my life and this just amazes me. I could watch this little engine run all day. Thank you for the time and effort y'all put into this project, and putting it on RUclips for the world to see.
Man oh Man ! You guys deserve some kind of 'mechanical award' for this work you've done. Of all the years ( time ) I have put in on air cooled engines in my job, this is THEE most interesting and spell binding thing I've seen. The slow motion photography ( videography ) is just fantastic. This , to me, is a great Christmas gift. Well done Mike and ROADKING805, well done !!
Absolutely cool! Well done! You seriously need to hook up with the slow-mo guys and get this at a gazillion frames per second. I would love to see how the flame propagates through the gas. :-) Merry Christmas and Happy New Year!
I was thinking how simple an engine is: piston, compression, spark, camshaft and valves timed for compression and exhaust. But "simple" doesn't do it justice until you can actually see that blue flame, piston and valves bouncing. Each project you guys complete is the one best ever and this is no exception.
Hi guys I only started watching you from a week ago, all I can say is that if someone were looking into getting into engineering they should definitely watch this channel. I've been an automotive engineer since 1988 and I do what you guys do in my spare time.
I'll be honest here, I'd rather watch this combustion process you've made visible to us you tubers than watch some half naked broad fly a gyrocopter. Something about mechanical engines that satisfy my soul. Great work guys.
Gentlemen, you have outdone yourself with this one. It is 2:30am and I had to watch this video before going to sleep...and now I have watched this video twice..hahaha. Much respect.
This is a perfect demonstration of Cadillac's fail safe system for their engines in case of fluid loss. It will purposely miss fire the engine to draw heat out of it at a very low rpm. Your glass head is miss firing and hauling off heat each time. That's why the engine and head is warm but the exhaust is hot. Fabulous!
that is extremely fascinating and hypnotizing at the same time.. you always see models of how an engine works but to see the inside while it is running is a whole new experience! love it.
THE BEST example I've seen to show a wife 'The Rudiments and Theory of motor vehicle technology'. To which she enquired, ' If you know so much , why do you send your car to the garage?' I GIVE UP.
John Matthews it's actually timed right, you clearly don't fully understand how a combustion engine works. This is a single piston, it has to vent, intake that mixture of air an propane, compress, then ignite it. Single piston engines are great, looks like a flashing penis. Lol
Isn't this a hit and miss engine? Those engines cut fuel whenever proper rpm is reached. That's why it isn't firing very often. Put it under load, and it will probably fire consistently.
I bow down. I'm at 6 (time). I want pizza. Your setup is excellent. Machining, attention to detail, also using LP. For what it is worth coming from me, I am VERY impressed. I grew up on the old Briggs. You picked a great block for this demo.
Great job guys. Looks like you put a lot of labor and effort to get to this point and it's absolutely wonderful to see the actual combustion of a 4-cycle engine. Science classes can use this video to show the students exactly what's going on in a real engine rather than a plastic mockup that is driven electrically. Kudos!
This is awesome! Thanks for putting this series up! Also, y'all might get in touch with The Slow Mo Guys and see if they'd be interested in getting some slow motion footage of the engine in action... they're absolute pros at making incredible quality slow motion videos (they could get some 1080+ footage of this at 1200 fps easily... maybe even 10k+ fps while maintaining HD resolution). A clear slomo video of this would be great for education!
Arthur Fonzarelli would call that cool! I was very captivated to see this run, a super slow motion camera would love this, it is like you captured "Lightning in a Bottle"! Thank you for sharing, this is the kind of contribution that makes "You Tube" the Greatest show on earth!
propane (LPG)combustion temps are higher than petrol remember this engine is running very slow not the 3000+RPM it rated at and more importantly not under load...also LPG can run higher compression ratio before detonation sets in ...the timing advance curve needs to be much different for LPG less advance a low rpm and more advance at high rpm ....if this engine was properly set up to run LPG under load it will need much more cooling ...as it is it will be fine
really enjoyed watching this little project. I love that yall have broken down ever step of the way into segments. keeps me coming back. keep them coming with new and exciting stuff such as the glass head Briggs and Straton.
You hit this series out of the park RoadKing. Most of us understand how a 4 cycle works, but to be able to watch it all work is insane. Thanks !! Now maybe a two stroke ?
No, it much more than that, it is hours upon hours of work. machining, milling , testing, and RoadKing's knowledge which allowed us a view of the valves working, seeing the combustion inside the head, plus much more.
That's a really cool project guys..! It's the first time I've seen a cylinder head out of glass. In fact I wouldn't even think it would be possible. On a low compression engine, glass would certainly do the job regarding pressure...but due to the different expansion coefficients of metal and glass, I would have thought it would crack. Thanks for sharing.
Compared to gasoline, propane is like 25% lower BTU per gallon and runs at a very similar AFR. You're about as likely to throw the cylinder through the head as you are to have a total meltdown. Now that I think of it, converting a modern Briggs engine to propane would be pretty clever since they run hot as heck. In other news, this is really cool. I hope we'll get to see it get wound up for a few runs on video.
805ROADKING do you think this could ever be used in a cars format? shows modeling etc etc, i jus saw thise video an im about to go through the other videos
I need to go back and watch earlier videos. But I expect this is set up to run like a Throttle governed engine. Not a true hit/miss but the same principle. Antique engines limited speed by some form of governor not a throttle plate.
I believe it's also due to the low rpms. I mean, 300 rpms is incredibly slow for these single cylinder engines, in which would normally stall out by then with a normal flywheel. And I'm sure the misfiring is also in some part due to the fact that these old engines weren't efficient at all. All anybody cared about was that it ran.
Just a thought on the heating of the head. To bring Plexi up to thermoforming temp in an oven heated to 300F to takes 24 minutes per mm of thickness to reach plastic point. The co efficient of expansion of plexi is huge compared to steel and the thermal conduction is really low. What this gobblygook means is that as the head will only heat on one side and try to bow like a bi-metal strip but in a dome shape and put enormous load onto the head bolts and while shattering Plexi can be awesome to watch flying bits of it can be a problem. Great build and I have enjoyed every episode, thanks.
Thanks Bud!! I'm glad you watched the whole series!! So far we have about 4hrs of running time and no problems!! The head only get to 100 degrees and the cylinder 110!!☺
Know what mate - this has to be one of the most interesting and coolest things I've seen with engines. To actually see inside a running engine. Nice job again lads :)
Four things I want to say about this one:
1: AWESOME
2: Because heads are so easy to replace, let's see one of these actually working. Belt it to a fan or something, put a load on, get the Rs up. Let's see it in full 2khz strobe mode!
3: The misfiring is a mixed bag. On one hand, so many skipped cycles is keeping it ice cold, on the other hand, it would look cooler if it fired every cycle.
4: I think this engine would look even better if you were to do a collab video with Taufledermaus or The Slow Mo Guys, such that we can see at ludicrously high framerates what's going on in there. In real time it's just a flash, at 28,000 frames per second we'd be able to watch the flame front as it spreads through the combustion chamber.
Fired every cycle? Its going to spark every time the crank triggers, but its only gonna ignite when the fuel air mixture is present on the correct stroke.
TestECull agreed
Take a closer look at the valves aclo982007. That engine is misfiring big time. It should fire once every two revolutions and each valve moves only once per two revolutions.
I never stated the engine was not misfiring, I replied to the "Every cycle" which I took as every crank revolution.
John Cochran I thought the engine was 4 cycle
Wow it's like finding out what happens when you close the frig door! lol
Lol!!☺
somebody call the slow mo guys!
Yes that would be so awesome
Nice work guys. You never really think about how fast pistons and valves actually move inside a running engine until you see it for yourself. I've been a mechanic all my life and this just amazes me. I could watch this little engine run all day. Thank you for the time and effort y'all put into this project, and putting it on RUclips for the world to see.
Thanks alot Bud!!☺
FINALLY! WOOT!
All that EMF from the spark is causing artifacts on the camera
chbrules I wasn't the only noticed that then :)
You mean EMR.
y'all mean EMI, Electro- Magnetic Interference !!
A braided shield around the HV lead should solve that issue.
Yay! You got it! Now get someone to film it in slowmo!
Yea, they should contact Tesla500 on RUclips. He made his own high speed camera called Chronos. Or maybe the Slow Mo Guys.
Invincible Extremes Muscle Cars Garage Oh Hell Yea!! I would like to see THAT!
Invincible Extremes Muscle Cars Garage SLOWMOGUYS
see the posts below, they are talking about it with another channel on RUclips
I love how he mentioned the subscribers and that how he's really trying to teach us younger ones
the light pattern is amazing, kinda like lightning slowed down,, now your going to need a portible dark room for the shows, great job guys.
Thanks Bud!! We'll just have to find some night shows now!!☺
Man oh Man ! You guys deserve some kind of 'mechanical award' for this work you've done.
Of all the years ( time ) I have put in on air cooled engines in my job, this is THEE most interesting and spell binding thing I've seen. The slow motion photography ( videography ) is just fantastic.
This , to me, is a great Christmas gift.
Well done Mike and ROADKING805, well done !!
Thanks alot Reg!! We appreciate you hanging in there with us!!☺
Wow, you really can see how each of the four strokes are working! 1)air fuel in, 2)compression, 3)explosion, 4)Corbin monoxide is pushed out.
It has a nice beat to it. If music was put with it you'd have a RUclips hit.
Perfect exhibit for high school auto shop class. Wish I would have seen that in high school.
Wonderful! Ever since a little boy I always wanted to see this. Big smile on my face. Thank you.
Under load I expect the glass to get hot and crack.
Thanks Bud!!☺
Absolutely cool! Well done! You seriously need to hook up with the slow-mo guys and get this at a gazillion frames per second. I would love to see how the flame propagates through the gas. :-)
Merry Christmas and Happy New Year!
Beat me to it.
I was thinking how simple an engine is: piston, compression, spark, camshaft and valves timed for compression and exhaust. But "simple" doesn't do it justice until you can actually see that blue flame, piston and valves bouncing. Each project you guys complete is the one best ever and this is no exception.
Thanks alot Aaron!! We appreciate you hanging in there with us!!☺
coolest thing I've seen on youtube in awhile
now thats cool every high school auto class needs one of this to show the kids how a combination engine works love your work guys keep it up
Thanks Bud!!☺
That really looks neat when the lights are turned off.
Thanks Bud!!☺
Glad to see this on the front page or Reddit and on /r/videos. Would love to see the SlowMo guys record a show on this firing.
You guys need a Chronos slo-mo camera... this engine would look so badass in slo-mo!!
I'll gladley watch another 10 or 20 minutes of that running.
call the slo mo guys.
Hi guys I only started watching you from a week ago, all I can say is that if someone were looking into getting into engineering they should definitely watch this channel.
I've been an automotive engineer since 1988 and I do what you guys do in my spare time.
That cool!! The Kid that brought our Pizza in is in his 2nd year at Rowan University Majoring in Engineering!!☺
That is the coolest thing I've seen done with a engine !!!!!!
I'll be honest here, I'd rather watch this combustion process you've made visible to us you tubers than watch some half naked broad fly a gyrocopter. Something about mechanical engines that satisfy my soul. Great work guys.
Thanks alot Bud!!☺
You're going to have a hell of a crowd at the first show you take that one to.
Gentlemen, you have outdone yourself with this one. It is 2:30am and I had to watch this video before going to sleep...and now I have watched this video twice..hahaha. Much respect.
Thanks alot Steve!! That means alot coming from you!! Merry Christmas Buddy!!☺
yourbeekeeper I agree it's 4:34am in Anchorage, Alaska where I'm at Merry Christmas Eve ...
Awesome all around everyone
Hell yeah!! Nice work guys, very cool to see it running!
Thanks Bud!!☺
I friggen love this, I found a 5s briggs block when my friend was moving and saved it, I'll have to try to make one of these.
come on rev it up! lol
Hit the nitrous! lol
I've always wanted to see the combustion chamber in action. Thanks for the Christmas present guys.
What is it about a super _slooooooooow_ idle that is just so damn satisfying??
Awesome job. If a picture is worth a thousand words. Video must be a million.
Thanks Bud!!☺
Wicked cool guys...An awesome result.
Thanks Mate!! Hope it was worth waiting for!! Merry Christmas!!☺
Sure was...Merry Christmas back at ya buddy.
This is a perfect demonstration of Cadillac's fail safe system for their engines in case of fluid loss. It will purposely miss fire the engine to draw heat out of it at a very low rpm. Your glass head is miss firing and hauling off heat each time. That's why the engine and head is warm but the exhaust is hot. Fabulous!
All you need now is a high speed camera. :)
That goes beyond just being neat,,,, that is Crazy Town Cool. I hope people appreciate what they are seeing.
Thanks RK...
Lol!! Thanks alot Carl!!☺
ALWAYS amazes me what you guys do.
Thanks Flash!!☺
805ROADKING u guys should rev it up and try adding a load to the fly wheel it would be cool 😎 to see how it handles at high RPMs
Now that's COOL! You spend your whole career building engines and never see that. Good job Mad Scientists. Thanks for Sharing.
Thanks Bud!!☺
we need to get Dustin to record this in slo-mo!
that is extremely fascinating and hypnotizing at the same time.. you always see models of how an engine works but to see the inside while it is running is a whole new experience! love it.
Thanks Bud!!☺
Awesome to see it running!
Thanks Bud!!☺
THE BEST example I've seen to show a wife 'The Rudiments and Theory of motor vehicle technology'. To which she enquired,
' If you know so much , why do you send your car to the garage?' I GIVE UP.
now i know why flys always end up in the bug zapper... soooo pretty to look at oooooooooh
That is really cool! Wish this was taught in schools so that kids could see this.
You need to set the timing and or mixture properly. That engine is clearly miss-firing about every fourth cycle.
John Matthews it's actually timed right, you clearly don't fully understand how a combustion engine works. This is a single piston, it has to vent, intake that mixture of air an propane, compress, then ignite it. Single piston engines are great, looks like a flashing penis. Lol
Its misfiring so much that its actually more like a 10 stroke.
Isn't this a hit and miss engine? Those engines cut fuel whenever proper rpm is reached. That's why it isn't firing very often. Put it under load, and it will probably fire consistently.
sounds like you dont really know what an engine sounds like because this is no where near running correct t
It is misfiring a lot because they're running it so slow. The large flywheel keeps the momentum up. If you speed it up it will fire more consistently.
I don't remember how I started following this build but I'm glad I did.
So cool!! great job! I second the suggestions for a followup slow motion video. :)
Thanks Bud!!☺
I bow down. I'm at 6 (time). I want pizza. Your setup is excellent. Machining, attention to detail, also using LP. For what it is worth coming from me, I am VERY impressed. I grew up on the old Briggs. You picked a great block for this demo.
This is good stuff. Merry Christmas.
Thanks Bud!! Merry Christmas☺
Agreed. Can't stop watching :-)
This is the coolest thing I have seen in years!
I'm one of the young guys XD I don't know how to time it, I laughed when you mentioned that
Gazerz Garage Same here :)
It's a thing of beauty. You guys did an amazing job - this should be a crowd pleaser at the shows.
Thanks Bud!!☺
Bravo! well done, very interesting. It raises a lot of questions, thanks for sharing this.
Thanks Bud!!☺
This is incredible- thanks so much for sharing this!! You have to do some follow ups on this. This is something you would see in a museum.
Thanks Bud!!☺
now it needs a glass side cover so we can see the internals moving
We'll let the 10-12 year old kids keep making them videos!! They do that alot!!☺
Great job guys. Looks like you put a lot of labor and effort to get to this point and it's absolutely wonderful to see the actual combustion of a 4-cycle engine. Science classes can use this video to show the students exactly what's going on in a real engine rather than a plastic mockup that is driven electrically. Kudos!
Thanks Bud!!☺
Pretty cool... is that electromagnetic interference in the video from the spark plug / coil?
Finally you all got it! Great way to push the envelope! Awesome way to show how things really work inside the motor too. Very unique too.
Thanks Buddy!!☺
Awesome job guys!
Merry Christmas. 👍👍👍👍👍
Thanks Mate!! Merry Christmas!!☺
This is awesome! Thanks for putting this series up!
Also, y'all might get in touch with The Slow Mo Guys and see if they'd be interested in getting some slow motion footage of the engine in action... they're absolute pros at making incredible quality slow motion videos (they could get some 1080+ footage of this at 1200 fps easily... maybe even 10k+ fps while maintaining HD resolution). A clear slomo video of this would be great for education!
Thanks Bud!!☺
Call the Slow Mo Guys!
David Ray This!!!!
Arthur Fonzarelli would call that cool! I was very captivated to see this run, a super slow motion camera would love this, it is like you captured "Lightning in a Bottle"! Thank you for sharing, this is the kind of contribution that makes "You Tube" the Greatest show on earth!
Just a heads up, if it's plexiglass watch what you use to clean it. Rubbing alcohol cracks it over time.
I could watch this all day. I'm happy y'all got it running.
its propane its not going to get hot. so wheres the guy that swore you need a radiator or its going to burst
Joe Kyser lmao some guy said it needed a radiator? These are designed air cooled
MegaElkHunter1 omg yes he kept going on and on. i guess we will see. oh shit the heads cold? what it didn't burst? wow no way. its an act of god!
hence, the really large fins as to promote maximum heat exchange or "cooling" to the engine.
hence the really large fins as to promote maximum heat exchange or "cooling" to the engine.
propane (LPG)combustion temps are higher than petrol
remember this engine is running very slow not the 3000+RPM it rated at and more importantly not under load...also LPG can run higher compression ratio before detonation sets in ...the timing advance curve needs to be much different for LPG less advance a low rpm and more advance at high rpm ....if this engine was properly set up to run LPG under load it will need much more cooling ...as it is it will be fine
Great job guys. I already used this video to teach my kid about internal combustion. Have a great Christmas
Know get with the slowmo guys
Send them over!!☺
Very very cool buddy !
Huge accomplishment .
Seeing the outside of an engine ain't Even close to how amazing it is inside !!
Thanks Bud!!☺
Nice 10-stroke engine. 1 combustion/power event every 10 strokes. XD
really enjoyed watching this little project. I love that yall have broken down ever step of the way into segments. keeps me coming back. keep them coming with new and exciting stuff such as the glass head Briggs and Straton.
Thanks Bud!!☺
Amazing, those valves hardly seen open long enough to do their job.
You hit this series out of the park RoadKing. Most of us understand how a 4 cycle works, but to be able to watch it all work is insane. Thanks !! Now maybe a two stroke ?
No, it much more than that, it is hours upon hours of work. machining, milling , testing, and RoadKing's knowledge which allowed us a view of the valves working, seeing the combustion inside the head, plus much more.
Thanks Bud!!☺
Bet i see this next week on the Slow Mo Guys LOL
That would be cool!! Send them over!!☺
Looks like an image from the Hubble in there, crazy how fast the valves go at such a low rpm, you'd think they would never close at higher rpm.
Wow! That's awesome, nice job!!
Thanks Bud!!☺
I must say this the first video in the series that I watched but it's absolutely AMAZING
Thanks Bud!!☺
I had a fucken seizure watching this
That's a really cool project guys..! It's the first time I've seen a cylinder head out of glass. In fact I wouldn't even think it would be possible. On a low compression engine, glass would certainly do the job regarding pressure...but due to the different expansion coefficients of metal and glass, I would have thought it would crack. Thanks for sharing.
Who gives this thumbs down?
Compared to gasoline, propane is like 25% lower BTU per gallon and runs at a very similar AFR. You're about as likely to throw the cylinder through the head as you are to have a total meltdown. Now that I think of it, converting a modern Briggs engine to propane would be pretty clever since they run hot as heck.
In other news, this is really cool. I hope we'll get to see it get wound up for a few runs on video.
Hey that is so cool,, be so much cooler if it was faster faster because I bet it would be like a lightbulb burning constantly
Thanks Bud!!☺
it would be fantastic, if we could get the "high speed video channel" guys to film the flame front in super-slow mo.
Anyway, great video, THANKS!
Perhaps send it to slomoguys to get some proper slo mo on it lol
Cool! Thanks for showing and sharing! Now I know what it looks like under the head !
Awesome friends
Thanks Bud!!☺
805ROADKING do you think this could ever be used in a cars format? shows modeling etc etc, i jus saw thise video an im about to go through the other videos
Why is the burn so uneven? The engine seems to be missing more strokes than it fires.
I need to go back and watch earlier videos. But I expect this is set up to run like a Throttle governed engine. Not a true hit/miss but the same principle. Antique engines limited speed by some form of governor not a throttle plate.
I believe it's also due to the low rpms. I mean, 300 rpms is incredibly slow for these single cylinder engines, in which would normally stall out by then with a normal flywheel. And I'm sure the misfiring is also in some part due to the fact that these old engines weren't efficient at all. All anybody cared about was that it ran.
We designed it like that to keep it cool!!☺
Amazing! Seeing these result will make me want to binge watch this ingenuity.
If only you had a slow motion camera
I just saw the title and said out loud "I've gotta see this!" Here I am, writing this before I have even seen the clip. OK. Here goes.
Doesn't look like your intake valve is seating properly.
I don't know what the purpose of this video series is(this is the only vid I've seen) but I like it! Pretty cool to see
Sounds like a hit and miss motor
It's a very, very low compression ratio, running on propane. I think it's hit or miss weather it has enough fuel in the cylinder to actually combust.
Best example of combustion in real time I have ever seen - hats off - nice work!!
Thanks Bud!!☺
Bring on 1000 RPM!
I could have that on my Coffee table as a conversation piece!
That is awesome. Thank You, Gentlemen.
Thanks Bud!!☺
that is so cool it's crazy to see how inefficient the burn is guess that's where the hit and miss comes from
Just a thought on the heating of the head. To bring Plexi up to thermoforming temp in an oven heated to 300F to takes 24 minutes per mm of thickness to reach plastic point. The co efficient of expansion of plexi is huge compared to steel and the thermal conduction is really low. What this gobblygook means is that as the head will only heat on one side and try to bow like a bi-metal strip but in a dome shape and put enormous load onto the head bolts and while shattering Plexi can be awesome to watch flying bits of it can be a problem. Great build and I have enjoyed every episode, thanks.
Thanks Bud!! I'm glad you watched the whole series!! So far we have about 4hrs of running time and no problems!! The head only get to 100 degrees and the cylinder 110!!☺
Looks other worldly with the lights off :) It's alive! The glass head was a fantastic idea. Well done!
Thanks Mate!! Happy New Year!!☺
cool beans guys,my son and I had fun together watching this project.Thanks, Merry Christmas guys.
Thanks alot Bud!! We appreciate you watching!! Merry Christmas!!☺
Know what mate - this has to be one of the most interesting and coolest things I've seen with engines. To actually see inside a running engine. Nice job again lads :)
Thank you Mate!! Merry Christmas!!☺
Congratulations and well done! Watched all your videos of this project and feel like I was there all along. Virtual high-five!
Thanks Bud!!☺