Hit-N-Miss Engine Operation Explained
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- Опубліковано 1 жов 2020
- Several people are curious as to how a Hit-n-Miss operates. So, this is my attempt to explain how they work and a bit about how a 4-cycle engine works. Also, this is how I crush cans with this engine!
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There was a gravel pit down the road when I was a kid and I always listened to that hit and miss at night pumping the pit . It's reassuring somehow . . . Thanks
Me too, an old pump Jack out in the woods, you could smell the oil before you could see the well.
Wow that's so interesting
I assume it's exhausting carbon monoxide gas so I hope you have adequate ventilation
@@dh5594 as the video is two years old your concern seems irrelevant
@@redskyz483 oh it's relevant if it gets a message to anyone that thinks about running a combustion engine indoors. It's irrelevant how old the video is
Wow.. that engine is a work of art!
Even got the crusher set up on cams
I bet this shop teacher was a bad dude when he was a teenager
We definitely need more of these kind of teachers
They should be the highest paid of all professions
Beautiful Engine and great lesson on 4 stroke engine! Love the Hit or Miss Engines. Great use of the worm gear too. Such a shame that so many kids avoid this knowledge.
I was never that interested in these engines until I found this video. You did a great job of explaining their operation.
HahaHa! This fella is so cool! I love how his work shop is full of new machinery, but he still loves this old skool hit and miss! And to make it crush cans ... so old skool cool! Awesome video mate!
thanks for the kind comment, Charley. Later, rt.
Love it!!
I want to build a larger more modern (slightly modern) version, a two cylinder, opposed piston, with 10"-12" stroke, and 6"-8" bore, make the cylinders from steel pipe, and steel plate, I'd really like to make it a oil burner, either way, maybe it can be ran off oil vapor, make a hot pot carburator, that uses a flame under what is basically a pressure cooker pot, and a small copper coil tubing to drop the temperature below the ignition point . So it doesn't ignite when it hits the airing the venturi of the carb, the throttle changes the oil drip rate slightly, but mostly and opens a valve allowing more fuel out the coil of 3/16" tubing, and a throttle blades probably made from a 24 mm scooter carb, or similar lawnmower carb, with the tube epoxied into the carb venturi, so if could be used for natural gas/propane also the hot vapor being est, 50°-70°F below tge ignition temperature mixing with air entering the cylinder, with a pair of sparkplugs per cylinder, with .060"gap and two coils firing twice per ignition cycle, with a 50-60 kv coil per plug, with a high current , high voltage spark to ignite the oil vapor that should be 150°f roughly when it enters the engine,
The pistons cast using old pistons from car engines, the molds made from foam, cast using the list foam method. plaster and sand, the foam piston being made est. 1/2" larger, to account for shrinkage. Use parts from modern engines where possible. Model the pistons after a diesel engine. With the combustion chamber in the piston approximately 80% anyway. Because the bore is so large, the large quench pads, and shapes to induce swirl to promote an effective combustion, the oil rings made from iron pipe cast then fired and machined into shape surface ground to thickness, use a spiring in the ring land stretched around and connected to it's self to space the rings from Each other , with a pair compression ring , top ring 3/16"- 1/4". From the top, the head cast from aluminum, with the water jackets being cross drilled, and cast in, uding plaster and sand, use large valves from a big block Chevy, or Chrysler engine, 1.880" exhaust, and 2.225" intake, opening to 1.000" - 1.200"+/- it doesn't require alot of seat pressure or open pressure, at less than 1500 rpm, weld and machine a crank, from steel bar, 2"-3" diameter, with 4" x
.500" thick, use roller wheel bearings for crank main bearing if possible, and a engine main bearings for rod bearings, possibly from a diesel truck engine, in the near 3" range, or a rod bearing, if one is available in that size, use a oil pump to spray the rollers, and feed the rod bearings, through the crank, also the piston pin, fed oil thru a 3/16" - 1/4" braised in steel tube, feeding oil, also feeding the oil ring land, spraying into the 1/8" holes in the piston skirt, the top side to lube the bore, with an overhead cam, possibly using a lawn mower or motorcycle cam with 2.5:1 rockers, with springs only 25psi seat 50-60 nose pressure, possibly use a screw in plug to lower the compression ratio, if the compression ignition doesn't work, (the complex air blast injection system I have an idea for) the injection working like a cross between a paint sprayer and a carburator, spraying oil through tiny holes into a venturi, through another set of tiny holes, using near 30 bar air pressure , lvhp paint sprayer basically, spray the fuel into a 1/16"-1/8" tube in the injectors, using a 1.5"-2" piston to put a air burst through the injector, as the fuel is being injected into the tube, about 50 cc of air at roughly 30bar, a venturi injection may be possible , just spray air through the tube with fuel , in an outside tube, using basically a annular discharge booster from a carburator, blast a 14.5 psi x 30+/- = 380 psi+/-,, air a piston and cylinder filled with the compressed air, then the full volume is used at full throttle. To reduce the throttle, some means to reduce the volume of air, not pressure. Giving an alternative path to refuse fuel and volume of air to throttle the engine. With the ability to go from zero, to 100 % maybe a simple bypass with a spring loaded check valve. And possibly feed the high pressure bypass air into the low pressure air tank ,
Being multiple stages, multiple compressors,a compressor compressing 120-150 psi air, to raise it another 100+ psi , using a AC compressor, with filters to remove water and oil, dust, and a cotton gauze oiled filter first, with a carbon filter between stages , to remove oil introduced by the compressors, single compressor from a automotive ac system will most likely, reach the pressure, I'm looking for about 150 psi above the engines cranking pressure, so there is plenty of pressure to atomize the oil as it's injected into the engine , with around 22:1 compression! It's likely not going to make a lot of HP, 40 would probably be possible, and it should make a fair amount of TQ. I want it to be used as a DC generator, producing 600 amps at 32 volts, plus, less than 20 kw with losses, it's probably going to require. 25-30 kw of output from the engine, 22hp should do it, if it can do that at 600rpm , with twin opposed cylinders , with Soo much displacement, even if it's running on gas with 8:1 compression it should make enough power to suit it's purpose, it may need to spin 800-900 RPM, that being it's sustainable peak apparently, maybe 1000-1200 definitely, a 12" stroke eq, a lot of piston speed, it's just a matter of finding the scrap to put it together, and the ability to machine the parts!!, Sorry to ramble a stray!! ✌️
I love it. Wish I could give two thumbs up/likes. I love that people make stuff like this. Makes me still reassured about humanity’s resourcefulness. Not always out of nessecity but just because. Love your invention, using centuries old engine technology. And I also agree with others. The sound of a hit and miss engine is just somewhat reassuring/calming. Good work.
Thanks, Jack.
It's not "centuries old" The ottoman cycle engine was invented in the late 19th century and didn't really become popularized till the 20th century.
Before this was the external combustion engine, usually a steam engine.
I was always fascinated by hit n miss engines, my grandfather used to use one to power a corn grindin machine . That one was as old as my grandfather, both were " made " in 1926.
I heard my first hit-n-miss engine 40-odd years ago on vacation on the Portugese island of Madeira: I thought something was wrong with the engine of a little fishing boat that was putt-putt-putting its way out to sea. Turns out, it was working as expected. Thanks for this explanation. I wish I'd had a shop teacher like this back in the day.
Loved the video. For the first time, I have actually seen and now understand how a clutch works; "engage the clutch" was a phrase I couldn't wrap my mind around for years. (Not a mechanic, obviously!)
This is mechanically comparable to a clutch in an automatic gearbox. Manual gearbox clutches work differently.
Thank you for your explanation and demonstration of hit and miss engines. I'd heard of them but never saw one in operation, and didn't quite understand the particulars of the design.
Excellent explanation and craftsmanship. Thank you for your efforts in the design, build and video execution.
Super little engine, and really good explanation and demonstration of how a hit and miss works. 👍
I always thought it was just really bad and old engines but no, they are designed to barely fire, thanks for the video
That is a joy to watch. We as a species are so amazing at times with the materials we have been gifted with here on planet Earth. Great post, sir!
Beautiful work..love the machine work and craftsmanship
Fantastic! Great machine and fantastic explanation of how it works.
Mega Awesome. Thank you. I Been repairing cars for 47 years, but i find things of this nature the most interesting.
I do like it. In fact I like both the can crusher and the engine. Many thanks.
Brings a smile to my face. Reminds my of high school machine shop. We didn’t build hit and miss engines. Just learned how to safely operate old machinery.
Very sweet little engine. With a practice application.
Thanks for the kind comment! Later, RT.
What an amazing work of art! Ive always wondered how a hit n miss worked thank u sir i enjoyed your video
What a beautiful engine!
I love the one of a kind home brew engines.I build them myself from ground up whatever I can find materials.
I would be proud to own that one!
Great job!
thanks for the kind comment. Later, rt.
Often wondered how the hit and miss engines worked. Now I know. Thanks for expanding my knowledge.
Lovely engine, and thanks for the explanation. Fascinating look into early 1900s technology. Bit of a Heath Robinson way to crush cans, but that just makes it cooler!
As a fellow instructor of machine tool technology I am beyond impressed. Thanks for sharing sir. This is just too COOL.
Thanks, Duane!
Thanks for the Hit-N-Miss explanation and demo. That's pretty cool.
Very nice engine I’ve had the opportunity to get to work on a few of these the earliest one I’ve worked on was a 1930s John Deere 1 1/2 hp purred like a little kitten very simple engines when you get them figured out thank you for sharing yours
Thank you for the clear and comprehensive explanation
Very clear explanation, excellent demonstration👍🏻
I love this video. Completely mechanical, and does what a machine should do, make life easier for the operator. Great instruction. Thank you!
thanks for the kind comment, Michael. Later, rt.
You are beyond talented excellent engine!
Thank you for the kind comment! Later, RT.
Very cool . I never quite understood how these worked . Never could find a lot of info on them either. Thanks bunches for the time and video.
thanks for the kind comment, Jackson. Later, rt.
You did great teach...👍
Great instruction with only one criticism. Everyone who wants to know how hit or miss works already knows how four cycle works.
That was very interesting! Thank you so much for the video.
Thanks, Sam for the kind comment! Later, RT.
great workshop
Nice. Great idea on the crusher; it empties itself.
Thats amazing, a wonderful piece of engineering
Thank you for your kind comment. Later, RT.
I saw a video this morning of a hit and miss 2 stroke on the Mustie1 YT channel. When he slowed it down by putting on a glove and pushing on the flywheel, the number of firings increased. But yours doesn't seem to do that or the load is so minimal it just doesn't have the effect.
Thanks for the tutorial and explanation. It makes perfect sense.
Thanks for the great explanation
Amazing!! Kids need to learn this type of engineering. Brilliant!!
thanks for the kind comment, Adam. Later, rt.
Enjoyed this very much
Beautiful machine. Thank you.
That’s really really cool! You did a great job. I wish I’d had a teacher like you when I was in school. Lucky students.
Andy, thanks so much for the kind comment. Later, RT.
Cool and Nice explaining!!
When I was a young man, most boys were into cars and engines like they might be into computers today. Your engine makes it plain to see how it works, very good job.
I like cars, engines (especially steam) and computers. In fact, I am in love with a lot of technology in general throughout history.
What a thing of beauty and a joy forever. I thought this was 3d printed.
This was a great explanation! I saw a few other videos that just kind of pointed at parts of the machine but didn't explain how they work. I would love to see a little more detail on the contact points, it's kind of hard to tell exactly which piece you were talking about from the video.
I'm also incredibly curious about that clutch, do you have a video about that? It looks really cool.
I got to learn something here. Thanks!
Thanks for the kind comment. Later, RT.
Nicely done Sir xx
thanks for the kind comment, Slim. Later, rt.
Nice hit and miss thanks for sharing 👍
Great video. You need to know basic engine operation to understand his explanation which is fine.
I really enjoyed this. thanks.
Learnt something new at age 84! Thanks! 😜
Very cool. The whole thing is great.
Thanks, Alex!
That’s a wonderful little engine. Thank you for sharing
thanks for the kind comment, Brian. Later, rt.
With your cam for the breaker points on the main shaft doesn't it also spark at the top of the exhaust stroke as well as the power stroke?
Thanks for sharing!
The can crusher on the wall of my garage gets the job done in a couple minutes and runs on a little bit of elbow grease, but I would rather it take all day and have fun playig with an engine like that. Thanks!
So cool! Do you sell the plans for that hit&miss? How about some info on that radial engine in the background?
I really like the engine you used to explain hit and miss. Are the plans for that engine available? Forgive me if others have asked that question.
Nice little engine!
thank you for the kind comment. later, rt.
I subbed just because how cool this is and you are
Thank you for your kind comment! Later, RT.
Hey, that's pretty neat, thanks!
Great video..,👍☘️🇮🇪
That was super cool
I used to listen to the pump jacks or walking beams .They pulled the oil out from 5k ft one stroke at a time down maybe fire coming out almost a dozen times All night long almost two miles away, pop,pop,pop.
Very nice, thank you
Very nice engine
Rick how good on fuel is it? And would you measure it by how much it used per hour of run time? Every time I see these running I always get the feeling there good on gas but no one talks about it.
Depends on the load (as with any engine) but if there's no load on them and they are just idling they are very fuel efficient. A two horse power one could run roughly 2 hours on just a pint of fuel if it was idling.
Add hoppers and a mechanical means of activating the clutch.
Could then load it up and let it go.
vary unique design for a hit and miss, what do you use the crushed cans for?
recycle them in the dead of winter for the highest price per pound. Thank you for your interest. Later, RT.
love it thank you
That thing is pretty adorable👍
I inherited one from my grandfather and I would like to know what I need new to get this thing started again? I can send pics or video of my hit and miss. Your video is awesome but I have some questions that maybe you can help me figure out.
your bet bet is to take it to a show. there will be dozens of ol' timers showing you how to get yours running. They love this stuff!!😁
Why doesnt the spark plug ignite at intake stroke? is it controlled by cdi or every time the magneto passes the metal
it probably does spark but is ineffective as there is no compression of the fuel/air mixture to cause combustion. Keep in mind that the switch on the pushrod(paperclip wire) has to ground the points to be able to fire the coil. Later, RT.
lovely
Love it mint little engine
thanks for the kind comment, Mark. Later, rt.
Nice engine and it runs real well and will slow down most of the model hit and miss engines that I have seen runs to fast, that looks like a Philip Duclos design..
I made a Philip Ducks engine that looks very similar to this one. It's about half that size and its a 6 cycle.
@@wayneprice6814 , 6 cycle? what are these 2 extra cycles?
@@vsvnrg3263 yes
Excellent job hopefully your a teacher on someone who will show kids how to do something besides play video games.
yes, I teach machining classes at a university.
Very expensive can crusher but neat engine.
He got the s whistle... i love you now XD
Is this type of engine more less fuel consumption?
More, they aren't super efficient. They're better at running all day and adapting to loads differently, but they aren't more efficient than modern 4 stroke engines.
Bonjour monsieur , Je suis en France et je voudrais savoir si vous vendez des moteurs et si vous pouvez l’expédier? Vous faites de belles vidéos. Merci gratitude 👍🤞✌️Michaël
J’oubliais de vous dire que c’est pour un projet de stand de glace 🍦
I understand how it works by I don’t get why you want this over a regular 4 stroke? Is it cuz lower rpm
this is a 4-stroke engine, it's just governed differently. this style of engine requires only a simple venturi for fuel mixture and a valve latch for governing speed, whereas throttle governed engines use the butterfly of the carb to govern speed. Throttle governed engines are smoother running engines.
Should take about 6 months to crush a case of beer
Such a pritty machine- only needs a couple of diamons inserted/
Awesome you made that how many people can say that. Make it fuel injection so its efficiency increases
The four strokes are: Suck. Squeeze. Pop! Phooey.
Read that in a science fiction story in the 1960s and never forgot it.
the engine is nice but the hidden gem here is the clutch! using a planitary gear set as a clutch and holding the ring gear* to stop all the other gears free wheeling is truely genius!
I have a fascination with gears and I don't know why! Thanks for the kind comment, Jason. Later, rt.
automatic transmissions change gears "automatically" using this style of clutch. As engine rpms increase, fluid pressure from the trannys internal pump increases until a solenoid activates, which tightens a band around the ring gear of one of the clutches. The ring gear smoothly decelerates, while the internal gears speed up, resulting in a smooth transition into another gear. Multiple combinations of these results in multiple speeds as well as reverse.
The solenoids can also be controlled electronically with a computer and sensors. Older transmissions used mechanical and hydraulic methods.
it similar to power split device toyota hybrid systems
@@RickTaylorpopnstart , do you know of the drive mechanism invented by william murdoch about 2 centuries ago to get him around someone's crankshaft patent? i only found out about murdoch a few years ago. i also regard him as the best candidate to bestow the title of the father of steam locomotion. richard trevithick lived down the road from him. but you probably already know this stuff.
How cute.
To modernize this, we need injection version. Better fuel economy and less pollution.
You need oil in the gas if yours doesn't have a drip oiler!
Was there ever a hit and miss diesel?
i stand to be corrected but yes i think there were. i seem to remember the first one i ever saw ran on "anything including orange peel". thats what the guide said - "anything including orange peel".
@@vsvnrg3263 Seriously ? I wish we could see one like that
@@357bullfrog9 , i saw it in a pioneer/heritage museum in a northern tasmanian town in the mid 70's. it may have had a glow plug which constitutes a diesel in my opinion. ive not researched this on the internet. just going off memory. if you got told a primitive engine ran on orange peels would you forget?
@@vsvnrg3263 I sure wouldn't. The orange peel fuel is what really got me interested. If they could do it back then why not now? Can you imagine how that would help. Both engine owners and orange growers
@@357bullfrog9 , its probably an extract from the peel. the best paint stripper ive used is based on citrus extract and non-carcinogenic.
I'm sure he knows his stuff, but that explanation was so utterly painful to listen to.
So many teachers are like that, unfortunately
He whistle at the same time he talks
False teeth . Duh.........
Reeealy thought that would have ben alot faster😂
well, I'm at that age that folks tend to slow down a bit.😁
@@RickTaylorpopnstart 😄😄
More correctly, it’s a 4 stroke cycle, not a 4 cycle.
How to crush a can in 2 minutes flat.