1993 - Volume #17, Issue #5, Page #26[ Sample Stories From This Issue | List of All Stories In This Issue | Print this story | Read this issue]
Dutch rubber tracked tractor new style steering system
According to a recent report in Britain's FARMERS WEEKLY, the first prototype is powered by a 250 hp. 6-cyl. Volvo engine. When driven in a straight line, the crawler exerts the same low ground pressure as other rubber tracks. But when the machine turns, hydraulic cylinders press down on the two center bogie wheels on each side, causing that area to bulge down-ward, giving the tracks a pivot point to turn on.
The manufacturer, Knijpstra Constructie, says the new system results in less field damage than other rubber or steel tracked crawlers. It compares favorably with low-ground pressure flotation-type ag tires.
The new crawler has a top speed of 35 mph and is said to have a smoother ride than other rubber-tracked crawlers. A belt between the high-mounted drive wheel and the first set of rollers acts as a shock absorber. Also, shocks at the rear of the track are isolated from the cab by a combination of hydraulic cylinders and nitrogen dampers.
Contact: FARM SHOW Followup, Kni jpstra Constructie, Heerenveen, Holland.
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