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Oil Field Engines & Related Equipment

Who's currently working on an Oilfield Engine?


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  #11  
Old 03-05-2019, 10:48:52 AM
Joel Sanderson Joel Sanderson is offline
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Default Re: Who's currently working on an Oilfield Engine??

I've thought of making an air start for my Reid, but I think it's pretty risky with an engine that burns gasoline, because any left over fuel in the system might diesel when the compressed air's added. (It's like using oil to clean an air rifle--gives a pretty good crack on that first shot!) Maybe that's not a concern, but since my Reid runs all the time by dieseling, it does make me wonder. There're lots of guys here that should know though, and I'm not one of them.
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  #12  
Old 03-05-2019, 11:55:27 AM
Peter Holmander Peter Holmander is offline
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Default Re: Who's currently working on an Oilfield Engine??

I agree Joel. Over the years I have studied most of the methods for assisting in starting of oilfield engines. I'm 70 yrs young now and cannot start the engine alone. And I don't want to have to rely on having extra help to do it. Lots of guys use friction starters, but the flywheels on Reid engines are just not beefy enough in my opinion to concentrate all that force on such a small area of the circumference of the flywheel. Many of the other engines out there have much stouter flywheels and I think friction starters are perfectly safe in those cases. I'm sure there are those out there who will disagree with me and say that its a safe method. And I'm ok with that. I just don't feel that it is. I purchased a 42 inch belt pulley and I am going to mount it on the Reid flywheel that has the drilled holes for the Sisterville clutches. Years ago I picked up a big mud sucker pump at an auction cheap and it has a 2 cylinder Wisconsin engine on it with a gear reduction on the business end of it. The pump was driven by a big chain, but I am going to remove the chain sprocket and install a 6 inch diameter belt pulley to that. The Wisconsin has a starter on it so no hand cranking for that engine. With the gear reduction and six inch pulley on the drive end and the 42 inch pulley on the flywheel, it should spin the engine over easily for starting purposes. And with little risk of destroying a flywheel. Once I get any bugs out of the design, I will mount it permanently to the trailer that the engine is mounted on.

---------- Post added at 10:55:27 AM ---------- Previous post was at 10:37:30 AM ----------

Joel, your comment about your engine making a good "crack" on the first shot brings back memories of when I bought my Reid. My son in law and I drove to Pa to pick it up. I told Mr. Wright that I was not going to take the engine unless I heard it run. It poured rain that day and they were trying to fire it off with a buzz coil. The heavy rain shorted out the coil we had so one of the guys there left to get a dry one. The 15 HP engine was mounted to oak timbers setting on the ground. A short time later the guy came back with a dry coil. They removed a pipe plug where the fuel supply goes into the engine and dumped a full dixie cup of gas in there. The dry coil was hooked up and 3 guys pulled on the flywheels and off she went. That Reid engine was running at full RPM,,jumping up and down on the ground like crazy. My son in laws eyes got as big as golf balls. He couldn't believe it. I'll never forget that unmistakable pow,pow,pow,pow sound that engine made that day. That sound is so addicting. Funny how when at an engine show and someone fires up a big engine, the whole crowd migrates to that engine. In my experience anyway. Just thought I'd share that with you.
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  #13  
Old 03-05-2019, 01:35:39 PM
Joel Sanderson Joel Sanderson is offline
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Default Re: Who's currently working on an Oilfield Engine??

That's really funny! I bet it was scary seeing that thing running like that.

I probably didn't write it clearly, but I meant to say that an air rifle will give a good crack on the first shot after cleaning with oil--not my engine. The air is compressed high enough to make the oil diesel. I'm not sure there'd be enough pressure in an air starter to do that or not, but I wouldn't want to find out. Apparently there's enough from compression, because my Reid does it.

I've probably told this on here before, but when I first put my Reid in, I had the bright idea of using a street light pole for an exhaust pipe, way up in the air over the shop. Well now, a light pole is tapered--small end up--so those exhaust gases had to accelerate on their way out the top. Let me tell you, when they hit that atmosphere, that was LOUD! It sounded like a whip crack, a sonic crack, along with the engine. Weird. A quarter mile way, almost to the neighbor's, it was so loud you wanted ear plugs! I'm sure it was heard in town, three miles away. It sure was impressive, but I didn't leave it that way for more than a day or two.
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Old 03-06-2019, 09:33:05 AM
Peter Holmander Peter Holmander is offline
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Default Re: Who's currently working on an Oilfield Engine??

I think it scared my son in law a little bit. I've seen several big engines do the same thing myself though.

A tapered exhaust visits the theory of convergent and divergent ducts. An exhaust pipe that is tapered or smaller at the exhaust end is divergent. The taper decreases velocity, but increases pressure. If you were to turn that aluminum light pole around and put the exhaust on the larger end, then it would be convergent, or the opposite. It would decrease pressure, but increase velocity. Just acting like a nerd sharing some of my jet engine theory from my training in the Navy. At my age, it's easy to confuse it and get it backwards, but I think I have it correct.

And I'm sure you now what a barker is. You created your own barker when you used that aluminum pole for an exhaust pipe.
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Old 03-06-2019, 02:38:42 PM
Joel Sanderson Joel Sanderson is offline
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Default Re: Who's currently working on an Oilfield Engine??

Wow. Oilfield engine guys are something.
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Old 03-06-2019, 05:11:59 PM
Andrew Mackey Andrew Mackey is offline
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Exclamation Re: Who's currently working on an Oilfield Engine??

My engine club (The North jersey Antique Engine and Machine Club) tok a chance on my recomendation and bought a stuck Oil City/South Penn 20 HP engine - Sight Unseen. With a small pile of cash, i went to see Tom Schoolcraft, and bought and brought the engine back to New Jersey. What a trip! During the pick up run, I got my first look at the Coolspring Power Museum, and have been hooked since! It to nearly a year to get it all done, and now it is on proud permanant display at our engine club site. i wrote an article for GM about the resto as well.

As for air start - you need an air tank with about 10 times cylinder volume minimum. Around 125 to 150 PSI of air pressure for a gas engine, and 200-250 PSI for a diesel. That's a lot of pressure. You will need 11/2" steel pipe or larger for direct entry to the combustion chamber. You will need 2 spring loaded check valves mounted in series as close to the cylinser as possible, to keep a possible un-intended back pressure from getting back into the tank. You will need a 2" ball valve to allow air pressure to get to the cylinder as quickly as possible. You will also need a ball valve in the gas line too. When you do the air start piping, you will need to mount both the air and gas valves very close together.

Here goes nothing - first you need the compressor to charge the tank. If you are running on hot tube, you need to light it. MAKE sure the ball valves are closed DO NOT open the gas supply from tank yet. Turn engine until exhaust port is open and then partially open the air valve. Let run for several minutes. This is done to remove any gas that might be remaining in the cylinder to be vented. If the engine does not have a decompression valve, you can put a Tee into the air piping after the twin check valves - between the check assembly and the combustion chamber. Go with what ever supply pipe size and a 1/2" bull (side) connection and install a iron gas cock on the tee. Open that valve and turn the engine to JUST past TDC and close the gas cock. Now it's just a matter of timing. Open air ball valve and let the engine turn until it is just about bottom center, before the exhaust port opens. Close the air valve. The engine should have enough momentum to carry over the compression stroke, where you open the air valve again, right at TDC, and repeat the operation. keep doing this until you get used to operating the air valve at the proper time. Only do this for 3 compression strokes maximum each time you practice starting. You want the tank at peak pressure each start attempt. DO NOT skimp on air pressure! After you think you have your timing down, then a true start attempt can be made.

Turn on tank gas supply, making sure the ball valve is closed. Vent the engine cylinder as described above, then open the decompressiin valve and turn the engine to just past TDC. Close decompression valve. Open air supply valve fully and turn the engine thru its first compression stroke when the engine comes back to TDC, open air valve second tima AND open gas ball valve. If the engine has enough speed up, it should carry thru a 3rd compression stroke and start. DO NOT open air valve again! You do not want to 'super charge' the cylinder with compressed air. If the engine does not start, close gas ball valve and open decompression valve. Turn engine to open exhaust port. Open air valve to vent cylinder for a few minutes. Set the engine at just after TDC, Close the decompression valve and re-do the start procedure.

Using air start is just a matter of timing and gettting enough air quickly into the cylinder. The version I gave you here is just a start. You will need to practice a bit before putting gas to the intake.
Andrew
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  #17  
Old 03-07-2019, 08:01:47 AM
Peter Holmander Peter Holmander is offline
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Default Re: Who's currently working on an Oilfield Engine??

You will never forget that trip to pick up the South Penn engine Andrew. It is etched in your memory forever. I remember the trip to pick up my Reid like it was yesterday. Coolspring is a special place. I have been there abut 3 times over the years. My wife goes along with me, but it's not really her thing. Just likes to see me happy. I am very lucky. If I were closer, I would become a volunteer there and have the pleasure of helping out with some exquisite engines. When going to the museum, it is best to stay near there and take two or three days to check it out. No way to enjoy what it has to offer in just one day.
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Old 03-07-2019, 10:37:52 AM
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Dwayne Fuller Dwayne Fuller is online now
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Default Re: Who's currently working on an Oilfield Engine??

My 25 Reid is stored at the Temple show grounds about 200 miles from home. I purchased all the parts for hot tube ignition last year but have not been down there to do the install. Maybe this summer?

My running buddy JR is working on his 8hp Reid. Wrist pin renewal and cleaning up the ring lands. Hope to have parts in a few weeks.

My Lufkin engine just sets and looks forlorn, almost like yard art. Maybe someday it will get the love and attention it needs.

Not oilfield but currently I am working on my 25 Fairbanks NB and 6hp Gade that has been in the project stack for 9 years. This semi-retirement is good.

Back in the day this was always the first forum I visited, sad that there is little traffic here nowadays. Let's all work to change that.
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Old 03-08-2019, 06:12:54 PM
David A. David A. is offline
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Photo Re: Who's currently working on an Oilfield Engine?

been working on a couple diff engines, here's a Bovaird and seyfang half breed on ajax bed, bored and sleeved, runs pretty good utube vid link
https://youtu.be/q_6shNAwIFk
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Old 03-09-2019, 01:13:42 AM
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Dwayne Fuller Dwayne Fuller is online now
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Default Re: Who's currently working on an Oilfield Engine?

David, nice running Bovarid. I love the simplicity of those half breeds. You have that one dialed in nicely. Bring it on down to my show on the 27th of April. Should fit right in with my loosely organized piles of scrap iron.
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