A TTAC reader is an engineer with a major powertrain company, and offered his extremely detailed analysis of the ZF 9-speed. Consider this an AP level course in powertrain engineering.

Before we dive right in to the 9-speed gearbox, let’s take a quick refresher on the basics of gears. The simplest gear set consists of 2 parallel gears mounted on 2 parallel shafts. Shown in Fig.1 is a gear set with a 20 tooth drive gear on the right and a 30 tooth driven gear on the left. For this gear set the speed of the driven gear is 1.5 times lower than the drive gear, and assuming no frictional losses anywhere, the torque on the driven gear is 1.5 times higher. This gear set has a ratio of 1.5:1. This type of a gear set is usually not favorable for packaging since it requires 2 parallel shafts, and there are largest separating forces that push the 2 gears apart which means that the bearings supporting the shafts have significant radial loads on them, in addition to an axial load if the gears are helical.

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TTAC welcomes “Anonymous”, a former temp who worked in a Japanese transplant factory, as he presents his opinion on the effect of the UAW on the American auto industry and the significance of the Chattanooga vote.

Sit down with me, children, and let me tell you about some of the great things labor unions have done for this country. The forty-hour week, safer working conditions, the defeat of the Pinkerton “bulls”, and, well, that’s probably about it. Many of the advances credited to labor unions by people who never bothered to read a history book are actually due to legislation. That’s okay. History, as the man who once doubled the wages he paid his employees without the pressure of a union to make him do it said, is bunk.

Now let’s talk about what the UAW has done for American workers. It created the “job banks”, where people were paid to do nothing. It created the seniority system that paid people $100,000 a year to sweep floors while young people were mercilessly shuffled off into a low-wage “tier”. It ensured that every automobile built by its employees during a time when American automakers were in the fight of their lives came out of the factory at the highest possible labor cost while simultaneously offering the lowest possible quality, often because the cars were sabotaged by overpaid workers who were encouraged to despise their employer, their product, and their customer.

Not satisfied yet? Don’t forget the best part of all.
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TTAC reader Dean Trombetta is back, giving an insider’s look at a widely reported but mis-understood story involving automotive plastics.

Last week, Aston Martin announced the recall of more than 17,000 vehicles for defective throttle pedals. The term “counterfeit plastic”, was frequently mentioned in the story, and for those not in the plastics business, the term may seem confusing. We usually associate the term “counterfeit” with consumer goods, specifically luxury items like watches, handbags and women’s accessories. Despite being in the plastics industry, I wasn’t sure what initial reports were referencing. But further research has shed some more light on the matter, and there seem to be two possible scenarios at play here.

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This week’s Ur-Turn comes from David Ruggles, a noted industry figure, prolific TTAC commenter and author of the Autos and Economics blog.

In my 44 years in the auto industry there have been a couple of continuing themes I have observed.  First, there is never ending change.  Second, consumers are uncomfortable with the negotiating process required when buying a vehicle.  These days vendors to auto dealers are trying to sell dealers on the concept that “transparency” is the key to success in selling cars.

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TTAC reader Dean Trombetta sent us an article on anti-freeze resistant nylon and its applications in the automotive world.

In early 2011, a class action lawsuit was filed against Porsche alleging that the company knowingly installed defective coolant pipes made of nylon into engines of Cayenne model SUV’s. Apparently, the pipes are very likely to fail prematurely resulting in serious engine damage. If the vehicle is out of warranty, customers end up spending big bucks to repair their engines and replace the coolant pipes. The replacement coolant pipes are made of aluminum. (Read More…)

Today’s Ur-Turn comes from TTAC reader Mike Stanizewski, who writes about his experiences with his E46 winter beater. Mike says

“I wanted to write this article after reading some of the recent articles regarding German cars and their long term reliability. Some of the commenters in the Cayenne article were wondering out loud what happens to old German cars when they reach their third uncaring owners. Well here I am, the third uncaring owner, and I want to tell you what it’s like to drive an old, high-mileage German car through the winter months.”

I live in Michigan. In my off hours I buy and sell used cars through my friend’s dealership. This gets me access to used cars at good prices. Every winter I pick out one of these cars to drive during the winter months in order to keep the salt off my nicer car.
My goal is to find a car that’s not too old and not too beat. And very cheap to buy.

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Today’s edition of Ur-Turn comes from Brian Driggs, a long-time TTAC reader, Mitsubishi fan and published of Gearbox Magazine, a digital enthusiast publication that we highly recommend.

As a North American Mitsubishi enthusiast, I often find the dismissive comments about the brand disappointing. While the US might be the second largest market on the planet (second to China, I suspect), it’s far from being the only market. I believe Mitsubishi is diversified enough they can afford to be more proactive with regard to automotive trends. News of the Renault-Nissan-Mitsubishi partnership only supports that belief.
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D. Alexander is back with another reader review. If you’d like to be where he is — and I don’t mean flexing your maxed-out biceps in the company of a bunch of attractive people, as he’s always doing on Facebook, but rather on these hallowed pages — let me know! — JB Nothing makes you […]

After noted Carrera Cup racer Sean Edwards was killed while instructing from the right seat, I wrote a piece on the incident for Road&Track. I also asked my friend Valerie Roedenbeck Maloof to contribute her thoughts here. Mrs. Maloof, whose work has also appeared in Porsche Panorama, is both a driver and the wife of a racer, so she has a unique and pertinent perspective on the risks of driving and instructing — JB

The sad news came on the morning after my husband and I had returned from a very enjoyable weekend at MidOhio, where we had spent three days driving with the Ohio Valley Region Porsche Club. Sean Edwards, 26, had died in a crash at Queensland Raceway in Australia. Edwards, a race car driver who was leading the Porsche Supercup and who was recognized as an all-around GT talent, perished while driver-coaching a 20-year-old aspiring race car driver.

His death stopped me in my tracks. We had just seen Sean at the Circuit of the Americas a few weeks prior, wished him good luck, and watched him drive the hell out of the MOMO Porsche, overcoming a variety of on-track challenges. He was by no means a close friend, but we respected him and admired his talent and racecraft. His friendly smile and admission that he was new to Instagram, but was enjoying it, haunted me.
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Everybody please welcome Cory Crelan to these pages. He’s a TTAC reader who had the rather indefensible idea to buy a pair of Nissan Sentras… of course, they’re both SE-Rs. Check out his story and offer your feedback as to his future plans! — JB

About three years after I sold my 1991 Nissan Sentra SE-R, I got a Facebook message from my friend Jim. He told me to call him right away. Jim is very active in the B13 (1991-94) Sentra SE-R community and works at a very busy repair shop outside of Hartford, CT. He currently owns four variations of the B13 cars between the SE-R and NX2000. When I called him, he had an interesting story to tell: A mutual friend of ours, Steve, got a job offer on the west coast and had ten days to uproot his family from Connecticut to Oregon. Steve happened to own four Nissans.

One of them was possibly the most well-known and documented SE-R in the country.
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Please welcome Jeff Stork, who comes to us from The Brougham Society with this story of an auto show and a young GM district manager, along with some great pictures. Check out his blog and Facebook page! — JB

In January of 1988, I was in my first year as the Buick Milwaukee District Sales Manager, aka “Factory Rep,” a job that entailed many tasks. Although it was primarily about obtaining enough orders to keep the factory churning- which could be a real task in a Wisconsin winter- there were numerous special assignments, one being the Milwaukee Auto Show.
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From our very own “Crabspirits” comes this mid-week breaking of the fiction rules. As Anita Baker once sang, “Rules were made to be broken,” but I think of Crabspirits’ work as something beyond fiction. Myth, perhaps — JB

Marty’s world was in the process of deflagration.

The bowsprit of the ’41 Plymouth knifed through the hot summer air as it cruised down Highway 275. “It’s a real scorcher today, huh?”, asked Marty nervously as he popped open the cowl vent. The gals in the back seat remained silent, knowing they were to blame. The little scoop in front of the windshield provided little ventilation of the cabin in the face of such oppressive solar radiation. A woman’s hairstyle must be preserved at all costs. The cabin portholes shall be configured in such a manner as to not direct airflow upon the hair. Gus slyly slouched in the front seat, and contorted his body so he could deftly reach for the window crank. Marty saw it out of the corner of his eye and cracked a wry smile. Gus had his window ever so slowly rolled down to the mostly open mark when his action was noticed. “Stoppppp!”, yelled Beth, hitting him from behind with her purse.

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He finally had the Camaro. It seemed like only yesterday Kenneth had helped his brother Bobby put in the new engine. They had gotten so greasy when they put the motor back together and shoved it underneath the hood of the `69. Afterwards, the chrome glistened from the valve covers and the motor rumbled with the smell of fresh 91 octane as it ran through the Edlebrock carburetor. Since the motor had been covered in oil from years of leaking, they smelled like oil for a week. With sparkling blue paint and black racing stripes the car looked like a beautiful spider, crouched and ready for the kill.

One thing bothered him though; this wasn’t how he wanted to get it. It had been two weeks since the accident and 12 days since Bobby had been laid to rest. Kenneth started up the Chevy. Today was the day. He was going do what they talked about so many times; he was going to the dragstrip. It had been too cold in the weeks before Bobby died, but now spring was starting and the slight chill in the air was just enough to add a few horses to the 302 cubic inch beast beneath the hood. Perhaps it would take his mind off the pain, anything but reliving the horror of when he got the news. This was his pilgrimage.

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The news that Ohio has joined a majority of other states in silently using facial recognition to make drivers “suspects” without their knowledge has been in the news for the past day or so. My first impulse was to write an incendiary tract where I compared my current home state to Soviet Russia in a manner that would be favorable to Soviet Russia. In the interest of balance, however, I reached out to someone with a deeper personal knowledge on the issue to provide a more dispassionate viewpoint. We’ve honored the writer’s request, and made this an anonymous contribution —- JB

The dreaded/joyful day has arrived when your teenaged son or daughter has passed the requisite tests, and it is time to smile for the camera and proudly receive that plastic card that legally empowers him or her to drive the mean streets of your neighborhood. You’ve already warned the neighbors, and they have dutifully moved everything mobile away from the curb. The mailboxes may suffer, but what can be done? Your excited child lines up exactly where he is told (you’re shocked to see that yes, he can still respond to simple instructions), in front of the appropriately colored cloth hanging on the wall, and flashes the happiest (only?) smile you’ve seen in years, proudly showing off the thousands of dollars you spent on orthodontia. The irritated DMV worker snaps, “YOU CAN’T SMILE!!!!”* Your child’s face turns to mild annoyance, and SNAP, the somewhat puzzled look is captured for what is probably “all time” in this day and age of the “cloud”. Why are the evil DMV people raining on your kid’s parade, making driver’s license photos even more hideous than seems necessary? It’s all in the name of facial recognition.

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TTAC Reader Richard responds to Derek’s Scion Metalhead Marketing piece from the perspective of a car lover and metal fan

” ‘Entrails ripped from a virgin’s c**t,’ ” I thought to myself.  Toyota wants to play patron to a musical genre that has spawned songs like ‘Entrails Ripped from a Virgin’s C**t’ and ‘Christraping Black Metal.’ What are they thinking?”

My disbelief at Scion AV’s announcement echoed across heavy metal fandom. If there’s such a thing as collective cognitive dissonance, Scion AV caused it. Nobody could believe that Toyota was going to do this. What did heavy metal have to do with selling cars? And why would Toyota risk its stodgy and safe image on promoting itself via heavy metal, even if done through the ‘edgy’ and ‘youth-oriented’ Scion brand?

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