One of our T friends in Albuquerque sent this over, wanting to share with other afflicted individuals...
That brings a whole new meaning to "roller rocker arms".
Too many great things to say about a Snow tandem engine! I need to get back out to Cool Spring, it's been 20 yrs.
I recognized a fellow that was there and ran thru the scene and was later sitting up on the engine.
For those that don't know, it's a four cylinder engine with two cylinders firing on each side of two pistons on a common piston rod.
Plus water cooling thru the rod and pistons. That leg out on the rear (front to us) end of the cylinder rod should always have water flowing down into the channel down on the right.
I see the compressor isn't hooked up. Don't recall if the compressor on the 600 in Rollag,MN is hooked up or not.
On a very warm summers eve 20 years ago, the flywheels on the 400's out at Heath Station, PA provided a welcomed breeze as I filmed them.
The stack music outside at 90 rpm's was utterly fantastic! Dup dip dup dup, dup dip dup dup, dup dip dup dup.
Sorry, ya caught me off guard and I babbled. :-)
Wayne G has done MANY, MANY good things for the gas engine world.
Thanks Marv! You made my day!
If we set our carbs, timing and throttles on our T's down low enough, we can get that sound. My Crappy T is so good about it.
Dup dip dup dup...
I tried Googling for more details but found little other than confirmation of my suspicion, based on the location of the rocker arms and in turn the valves that the pistons were double acting, like a steam train.
If it was used to power a pump for natural gas I'll assume it also ran on the stuff. Correct?
That thing is truly a behemoth. I'd love to see that in person. We run a steam engine roughly that physical size (From what I can tell), but only about half the HP. Not too many double acting internal combustion engines out there.....and tandem cylinders? That thing is unique. Very cool indeed.
Yes you are correct. It has disc type pistons and fires on both sides of the piston. Example, on the back side of both pistons first then on the front side of both pistons. Yes they were used to pump natural gas and ran on it. The compressors are on the other end of the engine and use a common crank and flywheel. As was mentioned there is also one in Rollag MN, and I am pretty sure the valves were out of the compressor and may not have been hooked up as well.
If you try youtube for Rollag Snow you may get a few more videos. If not their big show is Labor Day weekend, and I will watch them start it in person for you while I am there, if you would like!!!!!!
very nice, thanks for posting....
Kevin. Thanks for filling in some of the blanks on these behemoths. This is the first I am aware of a double acting internal combustion engine. When I was wondering how it was fueled, I saw what looked like injection pumps so I was thinking diesel, but they looked too small so I concluded they were for lube oil. I never did spy any of the ignition system though. Did I miss it?
The one at Rollag was running low tension coils and igniters. If you look at this video the board shown just at 12 sec mark is the coils. At about the 1:50 mark you can see the cam in the foreground and the trip for the igniter. You are actually are looking at the side of the igniter but if you follow the tan wires down you can see the igniter trip and fire.
The engine is painted, red for exhaust, green intake, blue cooling water, and the brown boxes that are chain driven are the lubricators.
It is a pretty impressive engine, to say the least,
Dog gone it, I have to work in the morning and now I am all excited and can't wait for Labor Day.
Here is a better video describing a bit more. You can see the coils better. At the 4:20 mark you can see the igniter, and towards the end you can see the compressor on the end of the engine.
Enjoy, I am going to bed, without getting much sleep I am sure!!
Cast iron porn? Yes indeed.
There is a Snow engine at the Buckly Steam show but i do not know if it is running yet? 600 hp kind of pales at the 6,000 HP Gas/Steam engine at the Henry Ford.
Rough and Tumble got their tandem running a few years ago. When I first started going it was just a giant pile of parts and year-after-year it slowly came together. It's an impressive thing to witness in person:
Shore is a big engine just to crush beer cans..
Thanks for sharing the videos guys. I pretty much depleted my cell phone batteries watching them many times..fascinating!
OT and sorry to bump this but Walter thank you for posting about the Rough and Tumble engine.
A Cooper! Nice! No. Fantastic! I'm so far out of touch with the gas engine world that I've had no idea...
IF I have my head on square, the Buckley show's Snow engine is an 1100 hp TWIN tandem.
That's two tandem engines on a common crank.
Mesta, Buckeye?, Pickerill and many others built beautiful engines of this style as pumping engines.
20 years ago out at Heath Station, they had a modern Wisconsin V-8 pumping engine installed as an add-on.
It made an awful racket compared to the Snow's.