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* Improved vehicle aerodynamics have decreased wind resistance and made the vehicles more "slippery."* Down-sized engines have reduced engine braking by compression.* Higher speed rear axle ratios have reduced mechanical retardation.* Radial tires have reduced rolling resistance.* The movement toward smaller wheels and low profile tires require the smaller brake to absorb the same amount of energy as the standard 16-1/2 x 7-in, fixedorvariabledeliveryhydraulicpumpunitmotor brake of today.It is no wonder that brake specifications have assumed such a predominate role when purchasing equipment. Fortunately, for truck fleets and the motoring public alike, government is playing a major role in demanding certain brake performance standards on new vehicles.How do all of these government standards help the truck fleet manager when specifying air fixedorvariabledeliveryhydraulicpumpunitmotor brake systems? Actually, the standards assume the major responsibilities for proper braking of new vehicles. However, the fleet manager still has certain obligations: The leading suppliers of the standard machines have had to make some major adjustments in production levels, and two companies (JCB in the United Kingdom and Komatsu, with production facilities in Italy) have started manufacturing their products in North America to offset rising costs firm producing machines overseas and importing them to the domestic market. JCB has a new manufacturing fixedorvariabledeliveryhydraulicpumpunitmotor facility in Pooler, Ga. Komatsu has opened a new facility for utility fixedorvariabledeliveryhydraulicpumpunitmotor vehicle assembly and production in Newbury, S.C. Back in 1998, only three companies made their machines in North America. Today, six out of fixedorvariabledeliveryhydraulicpumpunitmotor seven companies are sourcing machines from domestic manufacturing sites. The only company importing standard machines is Terex, which acquired Fermec in the U.K. from CNH a few years back. Circle fixedorvariabledeliveryhydraulicpumpunitmotor 105 on inquiry card This whole-house HEPA filter packaged system easily installs on the return air side of a forced-air system. It comes complete with a high-efficiency pre-filter, a true HEPA cell and a blower/motor assembly. The cell can fixedorvariabledeliveryhydraulicpumpunitmotor remove 99.97% of particulate at 0.3 microns in the airstream. A five-year warranty is offered on all electrical parts. Enerzone. Circle 106 on inquiry card The Drain-Rooter PH drain cleaning machine features a power cable feed and variable speed motor. The unit can be operated in both horizontal and vertical positions to get closer to the drain opening. Drum speed can be varied by changing pressure on a foot pedal, making it easier to thread the boring head through strainers and crossbars. Users can vary the feed rate from 0 ft./min, to 16 ft./min. The unit weighs 22 lb. General Wire Spring. ED-W is a line of wide-pitch retractable ducting hat features stitched construction. It can be fabricated in sizes up to 36-in. for moving large volumes of air under positive pressure. The ducting can be fabricated from a wide variety of materials such as vinyl-coated polyester, silicone-coated fiberglass and metallized fabrics. Heat-resistant threads enable the ducts to handle temperatures up to 1,000 [degrees] F. Hi-Tech Hose.
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