I worked on trucks for 40 yrs til I retired last year.Back in '77 or '78 we got some new GMC Astros with ABS.The first few trips out the drivers complained the trucks had lost their brakes and only the trailer had stopped them(non abs on trailer).We checked them out,and every thing seemed good. A few more reports of no brakes came in so we disabled them.I myself ran thru a red light when it changed quick on me : the brakes dumped the air but did not reapply. In more recent years they became mandated again and no disabling them.I road tested many trucks after repairs,and they worked pretty good;just as Glennster stated,they do keep you straight,and you don't skid.Could I stop any quicker,probably not.But,I think I would prefer not to have them,and do the stopping my self. On my personal p/u truck,'03 Chev,I recently had a brake line blow while towing my loaded trailer,and here's what I think is bad about ABS.When the line blew to the rears,the fronts started to skid,the ABS kicked on and dumped the pressure to the fronts and then I lost all pedal,and stopping power.Since the rears were not skidding I think it tried to apply the rears,BUT,there was a leak!And so,the fronts, which needed to apply did not,and so I had to pump the brakes myself.Luckily,the trailer brakes did their job,and I got stopped.If this happened with a non Abs vehicle I think I would have stopped quicker than I did,because the dual master cylinder would still apply the fronts,even if I did not pump the pedal. Which leads to my next beef:brake lines should NEVER,ever,RUST thru.My new ones are all stainless!The factories can make things rust proof if they want to.My '76 chev p/u had the cab and bed about rust clean away,but the brake lines,nor the frame, did not.Mark
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Today's Featured Article - History of the Nuffield Tractor - by Anthony West. The Nuffield tractor story started in early 1945. The British government still reeling from the effects of the war on the economy, approached the Nuffield organization to see if they would design and build an "ALL NEW" British built wheeled tractor, suitable for both British and world farming.
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