Mini 4-WD Articulated Deere 7020 Tractor

Mini 4-WD Articulated Deere 7020 Tractor TRACTORS Made-It-Myself 31-1-18 Kenny Fulk built a 1/4-scale Deere 7020 4-WD articulated tractor, complete with dual wheels, by putting two Deere garden tractors together. The front tractor is a Deere 318 model, and the back tractor is a 317. Both tractors are about 20 years old. The tractor's eight wheels are off the original garden tractors, and all of them drive. "I built it because I've always liked Deere tractors," says Fulk, of Dublin, Ohio. He cut the two tractors apart and rebuilt the 318 model's 2-cyl. Onan gas engine which was worn out. He cut the front axle and wheels out from under the 318 model and moved its rear end and transmission forward 1 ft., which left the tractor's front end hanging out about 1 1/2 ft. He built a driveshaft that connects the 318's transmission in front to the 317's transmission in back, with a universal joint in between. He used a pair of 1-in. dia. steel pins to make the articulation point. Each pin rides inside a pair of pillow block bearings. Both transmissions are hydrostatically controlled with a hydrostat control that runs through the middle of the articulation point. The control lever for both hydrostat transmissions mounts next to the steering wheel. A throttle cable out of a race car extends to the back transmission and is synchronized so that both transmissions pull or are in neutral at the same time. Steering is controlled by a pair of hydraulic cylinders which swivel on a steel pin that's welded to the tractor's articulation point. "Whenever I turn the steering wheel, one cylinder pushes and one pulls," says Fulk. Contact: FARM SHOW Followup, Kenny Fulk, 93 Grandview Dr., Dublin, Ohio 43017 (ph 614 889-8923 or 614 296-2585).

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