Similarities Between Rumely Oilpull & Poppin' Johnny

| January/February 1991

1102 Peach Street, Abilene, Texas 79602.

Most of my tractor experience has been on John Deeres, LeTourneau Tournadozer, and Caterpillar, but I have interviewed some old timers on Rumely Oilpull and I believe them when they say Oilpull was an excellent kerosene tractor.

The late Buster Hatchett, of Callahan County, Texas, would set aside modern tractors to plow with his Oil-pulls. He used Oilpulls into the 1980's.

I have noticed in the Rumely literature a few similarities between Oilpull and John Deere Poppin' Johnny. They were both two cylinder valve-in-head engines with parallel and horizontal cylinders, neither vertical nor opposed. Both used the 180 degree crankshaft.

The Rumely and the Johnny both used a high temperature cooling system. The Oilpull accomplished this by using oil as coolant and a special exhaust induced draft radiator. John Deere accomplished this with thermo-siphon water circulation plus a radiator curtain or shutter.

Both the Oilpull and the John Deere Popper used a big bore-long stroke-low r.p.m.-high torque engine. The Rumely used bores up to 10', while the Johnny used bores up to 6?' and Poppers up to 7 inches. The larger Oilpull ran 375 r.p.m., while the larger Johnny ran 900 r.p.m. Both exhibited high torque and good lugging characteristics.

7/17/2010 10:56:17 AM

"Oilpull used Madison-Kipp force feed lubrication to mains, rods, pistons, and pins plus the rods dipped into oil and churned up a heavy mist of oil to all moving parts". This statement is incorrect. The lubricator did not force feed oil under pressure to the mains or anything else. A brass tube was connected to the lubricator and then ran inside the block where the other end would drip oil onto the main cap where a dam was cast in the cap acting as a reservoir to catch/route oil down a hole, under gravity, to the rotating crankshaft.


Gas Engine Magazine A_M 16Gas Engine Magazine is your best source for tractor and stationary gas engine information.  Subscribe and connect with more than 23,000 other gas engine collectors and build your knowledge, share your passion and search for parts, in the publication written by and for gas engine enthusiasts! Gas Engine Magazine brings you: restoration stories, company histories, and technical advice. Plus our Flywheel Forum column helps answer your engine inquiries!

Be sure to take advantage of the Square Deal Subscription Program.

  • No Missed Issues.

  • No Renewal Notices.

  • No Additional Cost.

The Square Deal Subscription Program is designed as a paperless transaction with automatic renewals at a preferred low rate.   With advanced electronic notification, a 100% satisfaction guarantee and an easy opt-out plan, the Square Deal Subscription Program is the best value, risk free, eco-friendliest way to subscribe.

Facebook YouTube