OLD PULL RUMBLER


| July/August 1981


9145 Oberon Road #203, Arvada, Colorado 8004

About the time I retired in 1975, I ran across a couple of gasoline engines that started me on the road to collecting these antiques. Among the engines I had was a Fairbanks Morse 3 HP type Z. I decided that I would build a replica of an old tractor, using the Fairbanks Morse engine for the power.

I made some free-hand sketches of what I wanted it to look like. First, it would have to have iron wheels. Antique tractors did not run on rubber tires, and furthermore I was not going to use a frame from some other vehicle.

I drew to scale a general arrangement drawing, locating all of the parts I wanted on it.

I used a transmission from a Ford pickup truck that sits parallel to the crankshaft of the engine that is belt driven on the input side from the pulley on the engine. The pulley on the transmission had a brake drum that acts as a clutch, that can be operated by a foot pedal or a hand lever. On the output side of the transmission is a roller chain drive to a ten-to-one right angle speed reducer. A short drive shaft connects the speed reducer to the rear axle from a Toyota car, and roller chain drive to the rear wheels. The rear wheels are each on a stub shaft that is welded to the frame, as the floor of the cab is 10' above the ground.

The frame and all of the cross-members are of 3' channel. I made detailed drawings of all the frame members locating all holes and had these fabricated in a steel shop. I also made detailed drawings of all the linkage systems for belt tight enters for main drive, water pump, brake, clutch and gear shift levers.






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