One-lung Oil Pumpjack Engine
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Top Comments
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Oh, no. It's bliss, actually. I lived in Rural Kansas in a pretty heavy little oil patch and the sound of "indians beating on drums" puts you to sleep. Really, they get their own rhythm going and it's priceless. And all those wells were all so Off...backfiring, hitting and missing and such. What do you expect from a bunch of addicts keeping them up.
2 years ago 3
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Goddamnit, half the people posting don't know what they're talking about.
Yes this engine has a spark plug. It's a two-cycle Ajax (possibly cooper-penjax) oilfield engine. It's magneto-spark plug ignition, and it uses wellhead gas for fuel (note green tank by head of engine). The reason this engine sounds so "bad" is because when the rod is on the downstroke, it's forcing the engine to turn faster than it wants to, making it backfire. Sort of like driving downhill slowly in high gear.
3 years ago 3
All Comments (33)
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people who complain about that sound must not be to bright. That sound put me to sleep most nights. We had a natural gas well on our property, an i love the way these old engines go. So nice...
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It's just out of balance also sounds like the diaphram might be hooped.
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theres nothing wrong with the motor. its called a hit and miss engine.
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i love that sound. i cant understand why people complain. we visit a oilfield in northern michigan on state land near grayling
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LOL!!
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This wouldn't fly very well in California
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What is the timing procedure for a
Ajax Pumpjack motor? Position of piston to stab Magneto? Is it TDC?
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The engine doesnt need tuning, its just a bit out of balance. As the rods come up, the engine pulls more load than when the counter weights come up. Meaning, its a little rod heavy...........NO biggie, it could of just had a full pump barrel.
permiangroup 1 year ago
@permiangroup : The well system is out of balance, not the engine. In all my travels, I have found most wells are out of balance. The engine or motor struggles one direction or another, usually lifting the rods. If you catch one shutting down, it is obvious as the pumpjack rocks back and forth as it stops, ending up with its ass in the air!
oldbogus 1 year ago