The second phase of the heat cycle is estrus â not to be confused with âestrous,â which refers to the entire cycle. Estrus lasts about 9 days but can span from 3 to 21 days. During this stage, the female has a soft, swollen vulva and variable reddish, pinkish or straw-colored vaginal discharge.
In a word, the job is dangerous. To haul heavy loads safely takes the right equipment, the right driver, the right load securement, the right routes, the right escorts, the right permits, the right license, the right insurance, and strict adherence to the rig...ou don't just go out and buy a tractor and trailer to haul this stuff, says Ricky Aubin, transportation supervisor at Cajun Equipment Services. The brand of the truck doesn't matter. What's important is how it is set up to pull. For instance, with an 80-ton trailer, you don't want a truck with a high gear ratio.
Pretty neat. A good guideline for weight-distributing hitches is that you should use one if the trailer weighs more than 50-percent of the tow vehicle's weight. Weight-distributing hitches use conventional Class III (up to 6000 lbs.towing capacity, 350 to 600 lbs. tongue weight) and Class IV receivers (up to 10,000 lbs. towing capacity, tongue weight 600 to 1,000 lbs.), which bolt to the frame and your vehicle and use 2-inch draw bars.here weight-distributing systems differ is at the hitch itself. Where conventional hitches use a ball and draw bar, weight distributing hitches use a shank to which the ball mounts and the spring bars of the weight-distributing system attach.