Turbo Diesel Registry
Issue link: http://read.uberflip.com/i/1509045
22 22 www.turbodieselregister.com www.turbodieselregister.com TDR 122 TDR 122 ISSUE 82 Okay, what was noteworthy from November 2013, our Issue 82 magazine? Well, the first thing that jumped out was the "10 Back" review which took us back to 2003 and TDR # 42 Our,Issue 42 was the biggest page count (180 pages) that we will ever see. Yes, in year 2003 the TDR was just about the only outlet for diesel news. The internet was not so big, Facebook did not exist and Twitter was a reference to a bird. Issue 42 was also the first issue of the magazine that we were able to "digitize" and make available for TDR members at the website. So, when the writers and I make reference to a back issue there is no reason you can't find the data or information. And, let's not forget the two editions of the "Perfect Collection" that we also have available at the website. More From 10 and 20 Years Ago In Issue 42, the editor-dude came to the realization that so many good articles had been written and that a summary of these should be put together. You guessed it, the first 40 magazines were reviewed and articles were reprinted in the first volume of the TDR's Buyer's Guide publications. Now, when I can't remember the real technical reason that brake rotors "warp," I can find it easily in the Buyer's Guide or in a Perfect Collection book. Now that I've piqued your interest (really, what is the technical answer?), here is a quick refresher from James Walker's "Twenty- One Brake Questions." What causes my rotors to warp? Is it because I am driving my truck too hard? In 99% of all cases (not a scientific number, but close enough), warped rotors are not physically warped at all. The vibration and pulsation that is felt in the steering wheel, brake pedal, and floorboard is almost always caused by rotor disc thickness variation, or TV. TV is generally created in one of two ways. Most commonly, when the truck is parked for extended periods of time, a layer of corrosion (rust) can form between the brake pad face and the rotor. When the truck is then moved, there is a slight high spot on the rotor face which will then wear at a different rate than the surrounding material (see figure 1). Over time, this condition will only get worse until you feel it in your foot. TV can also be generated through overheating of the rotor. When the rotor gets really, really warm, it will actually develop isolated spots which are hotter than the surrounding material. These hot spots will also accelerate wear locally, creating a thick and thin pattern on the rotor face. Again, this will only get worse with time until the TV is felt by the driver and his (or her, as the case may be) passengers. For more on brakes and brake systems please reference the collection of articles on this subject that is found at our website under the title Perfect Collection, Volumes I and II. As the Editor, I have often lamented that as a society we don't properly honor the inventiveness and achievement of our elders. So let us give that bygone achievement some proper and regular observance in our pages in the "10 Back" column. In each installment of this column I review the accomplishments of TDR trailblazers as I summarize the old articles to reinforce that "the more things change, the more they stay the same." Here is my look back at what was happening in Issue 82, November 2013.