they meet all emission tests. Low RPM cool running combustion some are lean burn to be even more efficient. They run in California. We repair them in Alberta.
In Jerome Az @ the gold king mine, they had a 30hp hit&miss that they claimed would run 12hrs on 2 1/2 gallons of gas. Todays 30hp engines are not even close to that efficiency. Also these engines will run for decades if maintained
I am unsure if all AJAX engines where the same but this is not a hit and miss engine it is a 2 stroke throttle governed engine we had one on farm i took care of smaller engine on a shallow well
I have since learned that they are not hit or miss engines. They are all two stroke. Perhaps I can get a video of me rebuilding one of these little guys in the spring.
I have never seen a throttle governed ajax however I have only seen a few. I feel the throttle governed impco mixer on this one is not factory. They usually have a spool type valve thats opened by the governor that is separate from the intake reed valve. The engine speed is controlled by rapidly turning the fuel on and off.
@@TheZachLife ha , started watching your channel about a month ago , the engine in question i had some experience with definatly was not original it also had an impco throttle body on it .
I don't believe this is the same as a Hit-N-Miss. They look similar but are still not the same. I believe a Hit-N-Miss is governed by the exhaust valve and these are throttle governed. Most Hit-N-miss have open crank case and a open top water jacket. Still very cool sound and look! I grew up in the middle of the oilfield and could hear these old Ajax engines pop pop popping away at night.
Guys that is pretty dang durable and thrifty. And it is running perfectly except I would have to jack around with those big counterweights and see could I balance the up-versus-down load of the pump jack a little better. You see with "volume governing" (throttle-equipped) engines you waste power in the form of work done by the crank pulling the piston down on the intake stroke when there is vacuum. By contrast Hit-N-Miss engines don't have that problem. Every four stroke power cycle is done at "wide open throttle". What to do when it overspeeds? Disengage the exhaust valve. Can't swear on this one but 99% of these engines came with "atmospherically operated" intake valves i.e. just super weak intake valve springs, no rocker arm, lifter cam lobe nothing. So if you disengage the exhaust valve and no gases can flow out - then the intake stroke happens-but-not-really meaning the pressure in the cylinder is always too high to suck the atmospheric-intake open any at all.
1. Its way to remote and therefore expensive to connect to a electric grid 2. The pump should work nonstop, otherwise the well may clogged up. Therefore a reliable pump and fuel supply is needed (I think it uses a small part of the pumped up oil to fuel itself). In the time of installation, there was probably not a reliable electric engine available 3. Changing to electric would probably still be too expensive, otherwise they would have changed it by now.
Most 2cycles just aren’t as efficient as 4 cycle engines. Phillips Petroleum used a lot of these engines when they had plentiful natural gas in the field. Lufkin made big 2 cycle engines and numerous other Mfg. Cos.
Use to love listening to those old Ajax engines at night when I went to sleep, a long long time ago.
These engines will outlive us all. They have such low rpm they don't really wear out
I love Ajax motors. If electrical isn't available Ajax does the job.
Good ol Ajax hit one and miss three. Awesome
1:19 Like how that exhaust makes your pant leg dance. It sounds like it's saying, "fight, fight, fight" over and over again lol 😆
Love this sound. The first time was with my Dad when i was a young boy in the 60's.
Not my taste though, runs erratic
Brings back memories growing up in the east texas pines
The good Ole Ajax!! Love em.
Absolutely beautiful syncopation.
KEWL!! thats a pretty big one. Around here they are referred to as "make and breaks" used on everything from farms to fishing boats. nice!
Would love to know how fuel efficient these old engines are compared to modern engines. I suspect it would surprise most people!
they meet all emission tests. Low RPM cool running combustion some are lean burn to be even more efficient. They run in California. We repair them in Alberta.
In Jerome Az @ the gold king mine, they had a 30hp hit&miss that they claimed would run 12hrs on 2 1/2 gallons of gas. Todays 30hp engines are not even close to that efficiency. Also these engines will run for decades if maintained
I love how inconsistent the firing pattern is. Very unique.
Great video 👍
When mankind has destroyed it’s self! This will continue on pumping!
1:42 That wheel would rip your arm off.
thats awesome!
Fancy seeing you here sir. To bad we don't have these poopin away in Washington! I'd pop some pop corn and enjoy the show.
I am unsure if all AJAX engines where the same but this is not a hit and miss engine it is a 2 stroke throttle governed engine we had one on farm i took care of smaller engine on a shallow well
I have since learned that they are not hit or miss engines. They are all two stroke. Perhaps I can get a video of me rebuilding one of these little guys in the spring.
I have never seen a throttle governed ajax however I have only seen a few. I feel the throttle governed impco mixer on this one is not factory. They usually have a spool type valve thats opened by the governor that is separate from the intake reed valve. The engine speed is controlled by rapidly turning the fuel on and off.
@@TheZachLife ha , started watching your channel about a month ago , the engine in question i had some experience with definatly was not original it also had an impco throttle body on it .
Dropping the beat
I don't believe this is the same as a Hit-N-Miss. They look similar but are still not the same. I believe a Hit-N-Miss is governed by the exhaust valve and these are throttle governed. Most Hit-N-miss have open crank case and a open top water jacket. Still very cool sound and look! I grew up in the middle of the oilfield and could hear these old Ajax engines pop pop popping away at night.
Runs like shit on Propane.
@@chrisgordon5719 I don't think it the fuel
Guys that is pretty dang durable and thrifty. And it is running perfectly except I would have to jack around with those big counterweights and see could I balance the up-versus-down load of the pump jack a little better.
You see with "volume governing" (throttle-equipped) engines you waste power in the form of work done by the crank pulling the piston down on the intake stroke when there is vacuum. By contrast Hit-N-Miss engines don't have that problem. Every four stroke power cycle is done at "wide open throttle". What to do when it overspeeds? Disengage the exhaust valve.
Can't swear on this one but 99% of these engines came with "atmospherically operated" intake valves i.e. just super weak intake valve springs, no rocker arm, lifter cam lobe nothing.
So if you disengage the exhaust valve and no gases can flow out - then the intake stroke happens-but-not-really meaning the pressure in the cylinder is always too high to suck the atmospheric-intake open any at all.
E-42 ajax engine,that's one of the small models
Looks like an old Texaco unit.
What’s better Ajax or Arrow?
Nice beats though
That's a 2 stroke.
The equivalent of the rotary brap before cars
wonder how it's doing these days
Prolly long since been pulled off location. Western Oklahoma really dried up and became a ghost town.
@@lindoncoggins that's sad, not manny of these old gems left anymore
Old system propane operation, not electricity
500 kw generator
why isn't it electric?
1. Its way to remote and therefore expensive to connect to a electric grid
2. The pump should work nonstop, otherwise the well may clogged up. Therefore a reliable pump and fuel supply is needed (I think it uses a small part of the pumped up oil to fuel itself). In the time of installation, there was probably not a reliable electric engine available
3. Changing to electric would probably still be too expensive, otherwise they would have changed it by now.
@@macdam11 Judging from the propane tank next to it, this one is probably running on propane.
Gas guzzler.
Runs on propane, can run on gasoline, quite efficient for their size, actually.
Most 2cycles just aren’t as efficient as 4 cycle engines. Phillips Petroleum used a lot of these engines when they had plentiful natural gas in the field. Lufkin made big 2 cycle engines and numerous other Mfg. Cos.