«Previous    Next»
Dutch Rubber Tracked Tractor New Style Steering System
A Dutch rubber-tracked crawler tractor, designed originally to tow lifeboats to sea, has been modified for farm use by installing a patented new steering system that reduces field damage when turning.
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.

  Click here to download page story appeared in.

  Click here to read entire issue

To read the rest of this story, download this issue below or click here to register with your account number.
Order the Issue Containing This Story
1993 - Volume #17, Issue #5