I fell asleep like four times during the video... Just wanted to clarify that the video was great but that damn engine could put a guy on speed to sleep.
I did oilfield work out of High School one of the leases had an old hit & miss running wells off rod lines. 8 lines and about 20 wells, the longest line ran 3 wells off one line. Deepest wells about 800 ft half converted from rods to 1" tubing. It was big had to be 40 hp or so. No pop clack clack it was all pop pop pop. Deep chest thumping pop. Hook/unhook wells for service with a C clamp contraption that was so utterly dangerous and I did it without a thought. Ignorance of youth I guess. The whole lease ran for free off well gas. Old dude made a fortune. It was still running a few years ago when I went back home to see an old friend.
When I was a kid in the 70's these were all over mid Michigan. Loved hearing the pop-pop-huf-huf-huf-pop echoing through the woods. The exhaust pipes used to be buried or just lying on the ground, sometimes the exit would be hundreds of feet from the actual pump.
When he first started it, I subconsciously reached down to pet my dog and found that she wasn't even in the same room. With no load on it and that short exhaust, it really sounds like panting.
I remember the sound of that engine from many years ago as a kid. My dad told us what it was but I had never seen one up close until your video. Yes for me I could fall asleep to that sound 😴
Always enjoy your videos. I was a engine mechanic for 32 years at my last job working on modern engines, but i prefer working on old engines like flatheads and early pre 1963 Chevy 6 cyl. engines. Being a old man now I just work / play with old small air cooled engines. Keep them coming. I have learned a lot about generators watching your videos. I am getting ready to start on my 1945 Briggs model B engine with a 800 watt Kohler generator. I also have a Onan Built Fairbanks Morse model 1B-7 like you had.
Glad to see you got it dialed. That hot bulb idea is so cool. Probably not as efficient as a spark ignition engine for that reason though. I'm guessing the well head guys weren't too worried about wasting a little bit of natural gas that they were going to vent to atmosphere anyway. Thanks again for sharing.
I love it!. I play with old hit and miss engines and any other odd stuff I can find, I even have an old Onan 3kw parallel wound diesel, and an Ishihara 2 stroke rock drill/jack hammer, using three pistons, 2 connecting rods, one cylinder head, and a fuel oil mix squirter and a single spark plug! I'll have to do a UA-cam video on that.
I found your descriptions/explanations very clear and thorough, and anticipated my questions. For example when you illustrated how the exhaust valve was held open when the engine reached speed, I was thinking "wow that'll waste fuel won't it?" Then you immediately described how the intake would only open under low pressure conditions in the cylinder... Anyway no rambling...excellent!
I bought a 54 Chevrolet book mobile and when I went to get it there was 14 of these in it and had been in it for decades. My son and I got all of em running within a week of getting them, the 14 are complete engines and I also got about 8 boxes of extra parts and 4 disassembled engines, I learned fast don't mess with the timing lol.
Nice video, well done. Nice work on explaining the "double suck" phenomenon, and then fixing it. If I might try to explain what you were alluding to at around 17:20 in the video, you can look at it like this: a certain amount of mechanical energy is stored in the flywheel, as a result of its rotational speed; at the same time, certain amount of mechanical energy (also called "kinetic" energy) is _lost_ by the flywheel on each rotation. When the engine is freewheeling (operating without an external load), the only losses are to friction within the motor and to the air, which is stirred up by the flywheel's spokes and surface. The _ratio_ of the energy stored in the flywheel to the energy friction loss on each revolution is fairly low, so the amount of mechanical energy added to the flywheel by each "combustion event" is enough to carry it through quite a few revolutions, during which it slows down as its stored kinetic energy is (in a sense) "withdrawn." If a real load is attached to the engine, like a pump or a saw or an electric generator, the amount of energy lost to the load is much greater, expressed in terms of the amount of energy stored in the flywheel. Therefore the flywheel loses much more energy (and therefore rotational speed) per revolution, which causes the exhaust valve to be closed pretty much on each power stroke; there will be one combustion event for every two revolutions. In that situation, the engine is delivering its full-load output power, as you know. Any further load added past that point will cause the engine to "lose the battle," with each successive combustion event not adding enough kinetic energy to make up for that lost to the load; the engine slows down and finally stalls out.
I never knew the term "hit n miss" was ment towards governing the rpms on these, I was always under the impression it was ment towards just how the engine fired and nothing more. Thank you greatly for the explanation 👍
I'm just imagining this engine on "TheZachLife" channel, pumping away at one of his old oil wells. I can just see a nice Lufkin nodding up and down, and this engine just popping away all day long.
Your videos are great!! Your break down on what a hit and miss engine is, and how it operates is one of the best I believe I have heard. Your experience and knowledge with the type of old equipment is impressive. These old engines as well as others built during that time in our history were built to last forever. Those who like yourself are the ones proving this everyday. Thank you for keeping these wonderful machines alive and out there in front of the next generation to learn about and to get excited about how the mechanical systems of such things work, you my find friend may be that person who lites that fire within one or two of these young people that now has to have their hands and minds in an mechanical environment for this now has become their passion. Becoming the next engineers and or mechanics, who come up with new engines as well as the ways they are built. And who changes the Science itself on the way we think as to how we build . You never know how people like yourself touches others. When teaching or just taken the time to show and share with the young, when they have a question that after you answer it now becomes an hours long talk. Ever had one of those? I have. Ha, Ha, Ha. You and yours take care and may God continue to Bless you all.
I enjoy the thoroughness and technical explanations in your videos. One comment however, from a professional content developer, I'd recommend being more brief and high level at the beginning as to the "why" hit and miss engines are used, and how they work... at a very brief and high level explanation.
Excellent video keep up the great videos 👍👍👍👍it's very nice to see it running right I had figured that it was not running right I have seen them engine like that at steam threshing shows before here in western Minnesota
I'm new to this hit and miss engines, and I don't think we have used them very much in Norway. There were made a lot of Norwegian-made four-stroke hot-tub (semidiesel) engines with heavy flywheels, mainly for fishing boats that are kind of similar to this hit and miss engine. I find your videos very educational and look forward to more videos in the future.
Mike, you did a beautiful job of explaining how that engine operates. I have a Kohler light plant which needs some attention hopefully someday we can get together. Chuck Copeland
Always enjoy how you explain things. The hot tube set up is very interesting. The gas regulators and, accumulator info is great! Looks like you have your own little Jacktown Grove there. Good stuff Mike!
What a treat! Loved every minute of this and am grateful for the excellent explanation of how it is governed. Thanks very kindly for making the effort to share this with us.
Reminds me of the days living near a very small oil rig in Southern California. The majority of them are nothing more than museum pieces now, but there’s still a few functional near the Long Beach/Los Angles harbor.
That's some good quality work!!! Well done!! It'd be cool to have it powering something that you could bring to shows/meets... It's very hypnotic, watching the valves opening and closing, that exhaust valve catch popping in and out, etc,
Great video! Here is my assessment of the "double suck". Given that the gas feed is always on it loads the inlet with gas to a rich condition while in free cycle, and the first demand is too rich to fire. The engine cycles cleaning out the intake an the next demand cycle fires. You may want to experiment with a longer inlet tube on the air intake to provide a little more mixing volume, air velocity and turning down the gas supply.
I think the original problem with the double intake was that while the engine was coasting between hits the gas keeps flowing and builds up too rich a mixture to allow combustion. After the missed intake stroke it clears out that over rich mixture and fires on the second try.
Bet it was set up to run on nat gas... Making the orifice smaller and stiffening the spring makes sense. LP has a higher btu count per foot than nat gas does and lp runs a higher pressure to boot... Glad you figured it out :-)
very nicely done, Mike. Thanks for the update. I've never understood why people cn't sleep without noise, but maybe I should put the previous in a loop, and try it. Or not.
Used to visit grandparent in Wichita Falls, Texas in 70s and 80s; you could hear these things firing in the distance around the town, slowly pumping oil. Completely agree with Rob Smith and K.D. Pierce below as they put me to sleep on many nights w/open windows. Curious how many # of propane it burns/hr and what it sounds like under some load, like a car alternator or such. You could make a nice soundtrack w/video of it as ASMR, for sure. Thank you!
If it were mine, I would make a foot actuated brake mechanism that would apply pressure to the bottom of the start flywheel to demonstrate the hit & miss principle or drive something with the flat belt. Anyhow, congratulations on getting your hits correct!
I love it. If you hook it up to a matching generator and run it from the residential gas supply you could make a 12 hour ASMR video for those who need it. :)
Mike, I am really enjoying the video format you did here and in the last several videos. The explanations aren't oversimplified or overcomplicated and I am learning stuff, please keep at it. Also, I do like a hit and miss :). Sounds like a panting dog when coasting.
Mike, your explanations and work are excellent. Your camera is pretty good, don't beat yourself up. If you could take a ~10 minute clip of this engine running and loop it seamlessly for 10 hours I think you would get a ton of views. Call it "Steampunk asmr" .
Nice explanation of this particular engine! This way of ignition of a gas engine is new for me. Know lo w and high tension methods off coarse, as this one with Oil engines. Chapeau!
Mike, I still think there is a fundamental problem with the fuel system. The way the fuel is introduced after the intake valve results in an overly rich mixture that builds up in the cylinder while the exhaust valve is held open by the governor. To restore a combustible mixture takes two cycles, one to clear the cylinder and one that results in combustion. I believe by reducing the fuel pressure sufficiently while unloaded is what makes it fire each cycle. I have a feeling it won’t pull a load in this condition because the fuel mixture will be too lean. My suggestion is to introduce the fuel ahead of the intake valve. That way it will see a consistent mixture when the governor releases the exhaust valve.
Neat!. I enjoy seeing your persistence in figuring out what this engine needed! One suggestion/request. Could you put a load on it to make it fire every cycle? Just lever a 2X4 against the flywheel and load it enough to keep the RPM under governed speed to see what it sounds like!
A stronger intake spring (higher seat pressure maybe)should help it stay closed just a bit longer building more vacuum thus when opening creates higher velocity incoming fuel hopefully mixing better and a more complete burn making it run better and helping with the double intake pulse which would hopefully help keep the hot bulb hotter as well. Is my theory anyway but I don’t know what I’m talking about lol. Great video I subbed ✌️😁👍
This engine needs to be hooked up to a corn mill or water pump and make it do some work! Nice job on the tunning, but was it the accumulator, stiffer spring or hotter glow pipe that made it work properly?
Thanks Mike, that was great. Very interesting, and the mods made a lot of sense, but let me say, I would never have thought of them in 1000 years. All the best, Mart in the UK.
Great job, Getting it running with only one cycle at idle. The leaky rings, might be why it was hard to get it running on one cycle. Interesting how they timed it to release the exhaust valve near the end of the exhaust stroke, right where it should be closing in a normal cycle. I can't figure out why it should be so finicky on the fuel setting. I can see too rich, causing it to not fire, as too much cold air and gas for the hot pipe to ignite. Maybe the pressure behind the in take valve had time to stabilize, and forced to much fuel in on the first stroke, such that it couldn't fire, but had not had a chance to re-stabilize before the second intake. I think maybe you could reduce the pressure even more. Would like to see it running with a good load. Might have to make more adjustments, as then it might be starved for fuel. Tricky little thing. Well done.
Yo - SEM. Living 1/2 mile from an oil field i heard these heavily loaded engines (no muffler) 24 hrs per day disturbing sleep like nothing else could. This was 70 years ago - no A/C yet. Thanks. Rob Smith - yes it sounds soothing while NOT LOADED. Then , different story.
If you know how exhaust scavenging works, or more importantly why it’s needed, there might be a hint there as to why it intakes twice, now that I got to thinking about it, because when the exhaust is breathing, it clears all gases from the cylinder, just not all at once, through multiple dilutions and exchanges, the air inside becomes just air, when the intake and failure to ignite and exhaust happens, it can’t possibly purge all of the gases, so when it intakes again, it gets enough, now this isn’t just propane, but also compression, so it might be a good idea to check things like that, but it’s also possible the same phenomenon is causing a different issue, the gases can’t so quickly enter the hot bulb, if they do indeed go inside it and not just against it (I previously thought it was like a glow plug on the inside) and other than a method to make the propane get up inside there, there isn’t much that can be done and it’s a symptom of it being both a hot bulb and a hit and miss engine
I don't know about everyone else, but I'd love to see a collaboration video with yourself and Keith Rucker, from Vintage Machinery. Keith recently picked up a vintage hit and miss engine and is looking to getting it going again.
A big grinding stone in the size of a table saw would be nice as a load! :-D Then it would regulate itself up from this idle speed, as you simulated it by pulling the lever... Great job!
Thanks for a musikal moment in engine history , it sounds so great and relaxing to hear that enging run. I am wondering , a hotbulb engine dosent need to be heatet al the time , have you tested to turn of the heater and see if it continues to run without heating after it is started?
To us Ol Timers that is a sweet sound for sure.
Amazing how this was built 100 years ago.
Thanks, Mike.
There's something very soothing about a hit n' miss engine running properly :-)
Like a watch
I fell asleep like four times during the video... Just wanted to clarify that the video was great but that damn engine could put a guy on speed to sleep.
The sweet sound of work being done for you rather than by you. Very sweet sound.
Very good
Gonna bend my back and pick a bale o cotton miss elizer dear Liza gonna pick a cotton
I did oilfield work out of High School one of the leases had an old hit & miss running wells off rod lines. 8 lines and about 20 wells, the longest line ran 3 wells off one line. Deepest wells about 800 ft half converted from rods to 1" tubing. It was big had to be 40 hp or so. No pop clack clack it was all pop pop pop. Deep chest thumping pop. Hook/unhook wells for service with a C clamp contraption that was so utterly dangerous and I did it without a thought. Ignorance of youth I guess. The whole lease ran for free off well gas. Old dude made a fortune. It was still running a few years ago when I went back home to see an old friend.
When I was a kid in the 70's these were all over mid Michigan. Loved hearing the pop-pop-huf-huf-huf-pop echoing through the woods. The exhaust pipes used to be buried or just lying on the ground, sometimes the exit would be hundreds of feet from the actual pump.
When he first started it, I subconsciously reached down to pet my dog and found that she wasn't even in the same room. With no load on it and that short exhaust, it really sounds like panting.
heh, my thought exactly
can we see this thing under a load? that would be awesome to see if possible. Great video!
Easy to do. Put a wood wedge under the flywheel.
Even easier, just place a big boot against the flywheel.
It would be wonderful to see it doing real work such as driving a generator.
This channel would fit right in between This Old House and the wood working shows on PBS. And yes, that’s a compliment.
"Ooh oh chitty chitty bang bang , chitty chitty bang bang we love you! " Part Deux
I see a 65 ford peaking out from behind the shop. That was my first vehicle. You've got some great items over there👍🏼👍🏼👍🏼
Ya road king didn't have room to store it at his house
Glad to see you fixed the 'issue' there is something about these old engines.
I sooooooooo want to hear this engine under load. Let the venerable old girl show us what's she's got! Love the vids!
Hi Mike. It's hard to believe,just how much time has passed, I have been watching since you and the gang were much younger. liked,shared. All my best.
I remember the sound of that engine from many years ago as a kid. My dad told us what it was but I had never seen one up close until your video. Yes for me I could fall asleep to that sound 😴
Always enjoy your videos. I was a engine mechanic for 32 years at my last job working on modern engines, but i prefer working on old engines like flatheads and early pre 1963 Chevy 6 cyl. engines. Being a old man now I just work / play with old small air cooled engines. Keep them coming. I have learned a lot about generators watching your videos. I am getting ready to start on my 1945 Briggs model B engine with a 800 watt Kohler generator. I also have a Onan Built Fairbanks Morse model 1B-7 like you had.
Glad to see you got it dialed. That hot bulb idea is so cool. Probably not as efficient as a spark ignition engine for that reason though. I'm guessing the well head guys weren't too worried about wasting a little bit of natural gas that they were going to vent to atmosphere anyway. Thanks again for sharing.
No rambling love when you explain things you are very knowledgeable
I love it!. I play with old hit and miss engines and any other odd stuff I can find, I even have an old Onan 3kw parallel wound diesel, and an Ishihara 2 stroke rock drill/jack hammer, using three pistons, 2 connecting rods, one cylinder head, and a fuel oil mix squirter and a single spark plug! I'll have to do a UA-cam video on that.
2:30 PM and this is putting me to sleep .
If someone would make an hour long video of one running, that would be the ultimate soothing machine
I found your descriptions/explanations very clear and thorough, and anticipated my questions. For example when you illustrated how the exhaust valve was held open when the engine reached speed, I was thinking "wow that'll waste fuel won't it?" Then you immediately described how the intake would only open under low pressure conditions in the cylinder... Anyway no rambling...excellent!
I bought a 54 Chevrolet book mobile and when I went to get it there was 14 of these in it and had been in it for decades. My son and I got all of em running within a week of getting them, the 14 are complete engines and I also got about 8 boxes of extra parts and 4 disassembled engines, I learned fast don't mess with the timing lol.
Nice video, well done. Nice work on explaining the "double suck" phenomenon, and then fixing it.
If I might try to explain what you were alluding to at around 17:20 in the video, you can look at it like this: a certain amount of mechanical energy is stored in the flywheel, as a result of its rotational speed; at the same time, certain amount of mechanical energy (also called "kinetic" energy) is _lost_ by the flywheel on each rotation. When the engine is freewheeling (operating without an external load), the only losses are to friction within the motor and to the air, which is stirred up by the flywheel's spokes and surface. The _ratio_ of the energy stored in the flywheel to the energy friction loss on each revolution is fairly low, so the amount of mechanical energy added to the flywheel by each "combustion event" is enough to carry it through quite a few revolutions, during which it slows down as its stored kinetic energy is (in a sense) "withdrawn."
If a real load is attached to the engine, like a pump or a saw or an electric generator, the amount of energy lost to the load is much greater, expressed in terms of the amount of energy stored in the flywheel. Therefore the flywheel loses much more energy (and therefore rotational speed) per revolution, which causes the exhaust valve to be closed pretty much on each power stroke; there will be one combustion event for every two revolutions. In that situation, the engine is delivering its full-load output power, as you know. Any further load added past that point will cause the engine to "lose the battle," with each successive combustion event not adding enough kinetic energy to make up for that lost to the load; the engine slows down and finally stalls out.
I watched both vids and enjoyed them immensely! Thank You!
Thanks for watching!
Mike! On these engines, U are pure gold. Thank You for showing us!
I never knew the term "hit n miss" was ment towards governing the rpms on these, I was always under the impression it was ment towards just how the engine fired and nothing more. Thank you greatly for the explanation 👍
LOAD! We need to see it with a LOAD!! We know you are going to do it. Awesome engine! Love it! That huge V8 Gen engine is a treat, too!
I'm just imagining this engine on "TheZachLife" channel, pumping away at one of his old oil wells. I can just see a nice Lufkin nodding up and down, and this engine just popping away all day long.
Nice work to get that old girl running like she should. I always learn something from you - I told Roadking that I have nicknamed you The Professor!
Your videos are great!! Your break down on what a hit and miss engine is, and how it operates is one of the best I believe I have heard. Your experience and knowledge with the type of old equipment is impressive. These old engines as well as others built during that time in our history were built to last forever. Those who like yourself are the ones proving this everyday. Thank you for keeping these wonderful machines alive and out there in front of the next generation to learn about and to get excited about how the mechanical systems of such things work, you my find friend may be that person who lites that fire within one or two of these young people that now has to have their hands and minds in an mechanical environment for this now has become their passion.
Becoming the next engineers and or mechanics, who come up with new engines as well as the ways they are built. And who changes the Science itself on the way we think as to how we build . You never know how people like yourself touches others. When teaching or just taken the time to show and share with the young, when they have a question that after you answer it now becomes an hours long talk. Ever had one of those? I have. Ha, Ha, Ha. You and yours take care and may God continue to Bless you all.
Nice of you explain what the problem was and how you fixed it.
Thanks for going to the bother of detailed explanation! Iv'e heard a lot of hit & miss doing the "Double Suck" over the years!
I enjoy the thoroughness and technical explanations in your videos. One comment however, from a professional content developer, I'd recommend being more brief and high level at the beginning as to the "why" hit and miss engines are used, and how they work... at a very brief and high level explanation.
You're camera work is fine. The motor is purring now. Awesome job
Excellent video keep up the great videos 👍👍👍👍it's very nice to see it running right I had figured that it was not running right I have seen them engine like that at steam threshing shows before here in western Minnesota
awesome explanation of the operation of a hit and miss , love the engine
I'm new to this hit and miss engines, and I don't think we have used them very much in Norway. There were made a lot of Norwegian-made four-stroke hot-tub (semidiesel) engines with heavy flywheels, mainly for fishing boats that are kind of similar to this hit and miss engine.
I find your videos very educational and look forward to more videos in the future.
Your camera work is just fine for purpose. I kinda knew how hit and miss engines work but your explanation at close hand helped to clarify matters.
Id be interested to see this engine powering a water pump or similar device.
Had to watch this one again.. After I woke from my last comment.. She'll put you right to sleep... Thanks Mike for the update on her!
I absolutely look forward to watching that old girl work.
I totally agree a water pump would be a great old school way of load testing it. Glad to see you got all the bugs worked out of it mike.
Yes! Water pump.
Mike, you did a beautiful job of explaining how that engine operates. I have a Kohler light plant which needs some attention hopefully someday we can get together.
Chuck Copeland
Would love to hear this under load, even an old 2x4 board load.
Really enjoyed this video Mike. I never have known how Hit and Miss engines worked until now. You explained it perfectly, thanks. 👍
Hi from the UK Wow this is super cool.. I'm just doing a 1930s reel mower.. still this is super cool .
You sir are a testament to a true technician. IMHO thank you 🙏
I love hit n miss engines! But LOVE seeing them work 😍
I got my son watching your videos.
Always enjoy how you explain things. The hot tube set up is very interesting. The gas regulators and, accumulator info is great! Looks like you have your own little Jacktown Grove there. Good stuff Mike!
A larger pallet to stabilize the unit and mount your tanks, pipes etc. would finish it off nicely. cool engine and videos.
I remember listening to this in the oil field years ago.
I new you could figure it out if anyone could. Love watching these old engines run. Thanks for sharing Mike. Hope you had a great Thanksgiving!
What a treat! Loved every minute of this and am grateful for the excellent explanation of how it is governed. Thanks very kindly for making the effort to share this with us.
Reminds me of the days living near a very small oil rig in Southern California. The majority of them are nothing more than museum pieces now, but there’s still a few functional near the Long Beach/Los Angles harbor.
That's some good quality work!!! Well done!! It'd be cool to have it powering something that you could bring to shows/meets... It's very hypnotic, watching the valves opening and closing, that exhaust valve catch popping in and out, etc,
an accumulator on the intake side is called an attenuator. Nice job sounds great, love the pop pop
Genius way to regulate the speed en the sound is awesome 😊
Great video! Here is my assessment of the "double suck". Given that the gas feed is always on it loads the inlet with gas to a rich condition while in free cycle, and the first demand is too rich to fire. The engine cycles cleaning out the intake an the next demand cycle fires. You may want to experiment with a longer inlet tube on the air intake to provide a little more mixing volume, air velocity and turning down the gas supply.
I think the original problem with the double intake was that while the engine was coasting between hits the gas keeps flowing and builds up too rich a mixture to allow combustion. After the missed intake stroke it clears out that over rich mixture and fires on the second try.
My thoughts. Wondering if an on demand regulator like used on the propane conversion kits on eBay would have been the solution?
Bet it was set up to run on nat gas... Making the orifice smaller and stiffening the spring makes sense. LP has a higher btu count per foot than nat gas does and lp runs a higher pressure to boot... Glad you figured it out :-)
Neat.
I have a book for small engines from 1926 that discusses push pull engines.
Pretty simple, yet took some 🤔
It's like an old, quiet pendulum clock, just ticking over like time itself. Lovely.
very nicely done, Mike. Thanks for the update. I've never understood why people cn't sleep without noise, but maybe I should put the previous in a loop, and try it. Or not.
Used to visit grandparent in Wichita Falls, Texas in 70s and 80s; you could hear these things firing in the distance around the town, slowly pumping oil. Completely agree with Rob Smith and K.D. Pierce below as they put me to sleep on many nights w/open windows.
Curious how many # of propane it burns/hr and what it sounds like under some load, like a car alternator or such. You could make a nice soundtrack w/video of it as ASMR, for sure. Thank you!
If it were mine, I would make a foot actuated brake mechanism that would apply pressure to the bottom of the start flywheel to demonstrate the hit & miss principle or drive something with the flat belt. Anyhow, congratulations on getting your hits correct!
I love it. If you hook it up to a matching generator and run it from the residential gas supply you could make a 12 hour ASMR video for those who need it. :)
Great to see these old engines saved! Great job!!!
Mike, I am really enjoying the video format you did here and in the last several videos. The explanations aren't oversimplified or overcomplicated and I am learning stuff, please keep at it. Also, I do like a hit and miss :). Sounds like a panting dog when coasting.
Great video ,love the engine and the explanation .You have saved a true piece of mechanical history.
I think machines are quite rare, and should be maintained properly. Greetings friends, I'm from Indonesia
Mike, your explanations and work are excellent. Your camera is pretty good, don't beat yourself up.
If you could take a ~10 minute clip of this engine running and loop it seamlessly for 10 hours I think you would get a ton of views. Call it "Steampunk asmr" .
Nice explanation of this particular engine! This way of ignition of a gas engine is new for me. Know lo w and high tension methods off coarse, as this one with Oil engines. Chapeau!
Nice job thanks.
Maybe a recirculating water pump would be a load Dyno for a constant load.
Mike, I still think there is a fundamental problem with the fuel system. The way the fuel is introduced after the intake valve results in an overly rich mixture that builds up in the cylinder while the exhaust valve is held open by the governor. To restore a combustible mixture takes two cycles, one to clear the cylinder and one that results in combustion. I believe by reducing the fuel pressure sufficiently while unloaded is what makes it fire each cycle. I have a feeling it won’t pull a load in this condition because the fuel mixture will be too lean.
My suggestion is to introduce the fuel ahead of the intake valve. That way it will see a consistent mixture when the governor releases the exhaust valve.
I wonder how adding a load would alter the way it runs? Great video. Thank You
Neat!. I enjoy seeing your persistence in figuring out what this engine needed! One suggestion/request. Could you put a load on it to make it fire every cycle? Just lever a 2X4 against the flywheel and load it enough to keep the RPM under governed speed to see what it sounds like!
Thanks for the video. I would absolutely love to see you put some kind of load on this!
Nice job getting it running. Thank you for the explanation on what makes it tick.
A stronger intake spring (higher seat pressure maybe)should help it stay closed just a bit longer building more vacuum thus when opening creates higher velocity incoming fuel hopefully mixing better and a more complete burn making it run better and helping with the double intake pulse which would hopefully help keep the hot bulb hotter as well. Is my theory anyway but I don’t know what I’m talking about lol. Great video I subbed ✌️😁👍
I knew you'd figure it out, Mike! Great explanation and very well done, as always! Thank you for another great video, sir!
nice engine, would love to see it under load similar to what it would have been back in its working the day .
This engine needs to be hooked up to a corn mill or water pump and make it do some work! Nice job on the tunning, but was it the accumulator, stiffer spring or hotter glow pipe that made it work properly?
How about a sawmill blade?
@@flir67man84 Thought about that, but those are just plain scary.
Thanks Mike, that was great. Very interesting, and the mods made a lot of sense, but let me say, I would never have thought of them in 1000 years. All the best, Mart in the UK.
I sure appreciate you saving this part of engineering history, are we crazy for being fascinated by these living, breathing machines. Nope.
Congrat's on the 50k subscriber's you deserve it . I alway's enjoy your video's informative and alway's interesting keep up the great work.
Great to see it chuffing along properly! Thumbs up Mike!
Nice work Mike, that fuel system took a little time to figure out but you have it running great now.
Those old hit miss engines are just too cool. Put some kind of AC generator on it to load it. Thanks for the video!!
Great job, Getting it running with only one cycle at idle. The leaky rings, might be why it was hard to get it running on one cycle. Interesting how they timed it to release the exhaust valve near the end of the exhaust stroke, right where it should be closing in a normal cycle. I can't figure out why it should be so finicky on the fuel setting. I can see too rich, causing it to not fire, as too much cold air and gas for the hot pipe to ignite. Maybe the pressure behind the in take valve had time to stabilize, and forced to much fuel in on the first stroke, such that it couldn't fire, but had not had a chance to re-stabilize before the second intake. I think maybe you could reduce the pressure even more. Would like to see it running with a good load. Might have to make more adjustments, as then it might be starved for fuel. Tricky little thing. Well done.
Thanks for the extra info ( hitt-miss) ..... Mike..still am glad I'm not hauling your gear around
Amazing, how did they ever figure that out.
Yo - SEM. Living 1/2 mile from an oil field i heard these heavily loaded engines (no muffler) 24 hrs per day disturbing sleep like nothing else could. This was 70 years ago - no A/C yet. Thanks.
Rob Smith - yes it sounds soothing while NOT LOADED. Then , different story.
If you know how exhaust scavenging works, or more importantly why it’s needed, there might be a hint there as to why it intakes twice, now that I got to thinking about it, because when the exhaust is breathing, it clears all gases from the cylinder, just not all at once, through multiple dilutions and exchanges, the air inside becomes just air, when the intake and failure to ignite and exhaust happens, it can’t possibly purge all of the gases, so when it intakes again, it gets enough, now this isn’t just propane, but also compression, so it might be a good idea to check things like that, but it’s also possible the same phenomenon is causing a different issue, the gases can’t so quickly enter the hot bulb, if they do indeed go inside it and not just against it (I previously thought it was like a glow plug on the inside) and other than a method to make the propane get up inside there, there isn’t much that can be done and it’s a symptom of it being both a hot bulb and a hit and miss engine
I don't know about everyone else, but I'd love to see a collaboration video with yourself and Keith Rucker, from Vintage Machinery. Keith recently picked up a vintage hit and miss engine and is looking to getting it going again.
Lovely engine, would love to see it running under load, with something attached.
A big grinding stone in the size of a table saw would be nice as a load!
:-D
Then it would regulate itself up from this idle speed, as you simulated it by pulling the lever...
Great job!
Thanks for a musikal moment in engine history , it sounds so great and relaxing to hear that enging run. I am wondering , a hotbulb engine dosent need to be heatet al the time , have you tested to turn of the heater and see if it continues to run without heating after it is started?
Hit and miss engines cool while they coast. If this engine was under load, it probably wouldn't need the heat.
Your camera work is much more pleasant to watch them National Geographic, enjoy your videos👍
gotta love when it hit's it even makes the camera vibrate
Glad you got it ironed out Mike. Nice display
Good closure on the first video for this engine