• Tag Archives technology
  • Classic Brochure: The First Car Phone

    First Car Phone

    First Car Phone

    As 2021 rolls on, many automakers seem to be racing each other to publicize their timelines for transitioning their respective future product lineups to predominantly (or entirely) electric vehicles. Many elements of the general public, including journalists and EV detractors, are observing this scrum with doubt. Good questions are being asked, most of them related to electric-vehicle range and charging infrastructure.

    First Car Phone

    Early mobile-phone equipment was heavy and bulky. In addition to the receiver and transmitter seen here, the typical system included a roof-mounted antenna, and often an additional battery, generally installed under the hood.

    General Motors, for example, plans to pivot to a predominantly EV lineup within the next 15 years, while Volvo plans to be completely electric by 2030. I mention these transitions not because I doubt EVs will eventually replace gasoline- and diesel-fueled vehicles, but because the widespread adoption of electric cars and trucks will require consumers to make changes in how they go about getting from place to place.

    While “topping off” your car at home instead of at a BP station isn’t likely to be a jarring transition for most car owners, waiting 30-40 minutes for a charge while on a long road trip may prove to be more than some drivers are willing to bear.

    But the compromises we will be asked to make as we move to cleaner, more efficient transportation are nothing compared to the hassles that were required to take telephone communication mobile back in the late Forties.

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    In October of 1946, the first successful phone call from a landline telephone to a mobile phone occurred. The call was carried over Illinois Bell’s Radiophone system using equipment manufactured by Motorola. As it turns out, nothing about that process was actually simple. Here’s why:

    Equipment

    Equipping a car with a mobile phone meant installing at least 80 pounds of equipment—most of which was stashed in the truck, seriously compromising cargo capacity. In most cases an additional battery was deemed necessary, adding to the weight and cost of the installation.

    Access

    At least initially in the Chicago area, there were only three channels available for the entire network. This meant that there was frequently a wait to place calls, as all the available channels were in use.

    Complexity, Part I

    The first mobile phones operated more like a two-way radio than a phone. Phone users were required to press a button on the receiver to speak, and release it to listen. (Landline users on the other end of the call were not required to engage in this handplay.)

    Complexity, Part II

    The original mobile phones were not equipped with dialing devices. Calls were placed by an operator, adding to the length and complexity of each.

    Range

    Useful range was somewhat limited. The original Radiophone networks were broadcast using frequency modulation (FM) providing a range of roughly 25 miles from the broadcast tower.

    Guesswork

    Calling a vehicle on the road meant knowing its approximate location. To make such a call, the caller would need to call the long-distance operator (remember those?) and give him/her the name of the city/broadcast town closest to the vehicle. Vehicles too far from the selected tower could not be reached.

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    Finally, mobile-phone use was extraordinarily expensive—as you might expect when the system only permitted three calls per tower at one time. The cost-estimate sheet shown below includes some startling numbers. Equipment rental—per car—ran $15.00 monthly (about $165 in 2021 dollars). The basic service cost $7.00 per month ($77 in 2021 money), and apparently included up to 20 calls—less than one per workday. No word here on the cost of additional calls, but at the 35-cent-per-call rate of the minimum service plan, additional calls would cost about $4.00 each in 2021 dollars.

    Though there was no way to leave messages via the Radiophone system, a light on the phone holster would inform users that they had missed a call. The light would also drain the battery over time—just saying.

    Lastingly, that 80 pounds of equipment was packed with vacuum tubes, meaning that placing a call would likely have to wait several minutes after starting the car as the tubes would have needed to warm up.

    It wasn’t until 1973 that Motorola developed the modern cellular-style mobile phone system, which allowed multiple concurrent calls and unbroken operation between broadcast towers. Widespread consumer cell-phone availability didn’t really kick in until the Eighties.

    The brochure shown below was recently excavated from the Consumer Guide archives, though no one seems to know where it came from, or if Illinois Bell sales representative M.C. Thoren closed this particular sale. We estimate the brochure to be from 1948.

    Had mobile-phone technology not advanced at the same pace cars have, we’d be loading 80 pounds of equipment into our Chevrolet Bolt EUVs, and likely suffering reduced range as a result of the electricity required to power all that stuff.

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    Classic Brochure: The First Car Phone

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    First Car Phone Gallery

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  • Tech: Vonnen Shadow Drive—Innovative Hybrid Power for Your Porsche


    Powerful Inline Electric Hybrid System Adds HP To Our Favorite Sports Car

    Since the first automobile, enthusiasts have always clamored for ways to hot-rod their cars to go faster.  Over the years, carburetors, camshafts, turbochargers, superchargers, nitrous-oxide injection and exotic fuels have been the way to satisfy that go-fast itch. 

    With the current move to electrification of vehicle powertrains, hybrid battery-electric systems have become the newest method of gaining an edge.  In racing, hybridization is now becoming the must-have technology to win.

    Realizing the advantages of hybrid powertrains, Vonnen Performance, based in the heart of Silicon Valley, has developed an innovative aftermarket, bolt-on hybrid system that takes a regular Porsche 911 and adds an electric motor between the engine and transmission, along with a battery and control unit.

    The Vonnen Shadow Drive (VSD)

    Vonnen Shadow Drive Hybrid System

    A slim addition

    The VSD electric motor is a thin-profile unit, about the thickness of a pizza box, that is sandwiched between the 911’s gasoline engine and the transmission, and replaces the stock flywheel and starter. The motor is tucked in the transmission’s bell housing, adding only about an inch to the powertrain’s length. With the hybridized powertrain installed, it’s impossible to see any changes to it looking into the engine bay from above or below. Despite its small size, the VSD motor adds 150 horsepower (hp) and 150 pound-feet (lb.-ft.) of torque to the 911’s powerplant.

    Because the VSD is before the transmission, it benefits from the same torque multiplication that the engine does.  It works with both manual and PDK transmissions, and both all-wheel and rear-wheel drive Porsches. VSD cannot power the car on its own, it’s purely an assist system, the mildest of all hybrid types, but it is still a wolf in sheep’s clothing. Unlike Turbos or superchargers, PSD generates no parasitic loss; its power is entirely self-contained, and its energy comes altogether from recaptured waste energy.

    Vonnen Shadow Drive Hybrid System

    The VSD is a snug fit

    The VSD is powered by a specially designed and built 1-kilowatt-hour Li-ion battery that sits at the bottom of the 911’s frunk and only takes up a few inches, so there is room for some luggage.  The battery consists of six modules that are of unique chemistry for fast discharge and recharge.  Its characteristics translate into having the speed of an ultracapacitor and the storage capacity of a battery.  This design means that the battery can dump its entire capacity in less than a half a minute, and recharge by regeneration again almost as fast.  Because the battery design is very resilient, it can do it over and over all day long. 

    The battery system and the VSD motor generate a lot of heat, so each has an independent coolant loop with additional radiators that sit in front of the stock 911 engine radiators.

    Vonnen Shadow Drive Hybrid System

    The added battery is in the frunk

    Controlling everything is the Vonnen Control Unit (VCU), a combination of a DC-to-AC inverter and a microcontroller. This part of the system is ingenious because it pulls vehicle data like throttle position, vehicle speed and other data from the 911’s CAN-Bus. It uses this data to calculate how much power the electric motor should produce, and when and how much regenerative energy to charge the battery during coasting or braking.  But this is a one-way data transfer.  Adding a VSD requires no reprogramming of the 911’s engine control unit, and the VSD is entirely invisible to it. The modified 911 is still 100 percent compliant with state and federal emission regulations.

    A VSD adds 210 pounds to a 911, but, by removing the dual-mass flywheel, starter and adding a smaller 12V battery, the total weight gain is only 170 pounds or the weight of a typical passenger.

    The handling characteristics of a VSD-equipped 911 is more balanced, too, because of the placement of the battery-inverter in the frunk.

    Vonnen Shadow Drive Hybrid System

    The controller unit is ingenious

    A smartphone app controls the VSD and is pretty easy to use.  There are three buttons, Stealth, Sport and Overboost (think of Overboost as a Ludicrous Mode). There is even a fourth mode called Off.  I never actually used this mode, but it could be thought of as a valet mode.  Vonnen VSD software is updated through the smartphone app.

    How Does It Drive?

    To find out, Vonnen threw me the keys of its demo 911, a 2013 PDK-equipped base 911, and said enjoy yourself!  This 911 is one that I am familiar with, having driven an almost identical one through Germany and Europe a few years ago.  It’s a reasonably fast car, with 350 hp, 287 lb.-ft. of torque and a 0-60 in about 5.0 seconds, but it gets a little winded at over 130 mph on the Autobahn.  I was keen on experiencing how this VSD-equipped 911 differed from stock.

    Vonnen Shadow Drive Hybrid System

    An app to change your mode

    The first two modes, Stealth and Sport, are what most drivers will use most of the time. They both add 150 hp and 100 lb.-ft. to the base 911’s 350 hp/287 lb.-ft., but they differ in their application.

    Stealth is your daily-driver mode, with the power applied in the low- to mid-range, which adds just enough power for around town and that extra kick to show Teslas who is still the boss. 

    Vonnen Shadow Drive Hybrid System

    The whole package

    Sport is my favorite because it applies more substantial power to the mid and upper ranges.  This mode is for twisty roads and perfect for a Northern California backroad like Skyline Blvd.  The VSD-equipped 911 also had a Porsche Sports Exhaust (PSE) with muffler bypass baffles on it that open when your right foot goes to the floor.  This setup, combined with the electric motor and inverter whine, made for a loud, unmatched, perfect symphony. Of course, fuel economy is unchanged from the stock 911 and is dependent on the driver’s foot.  The midrange power is entirely different from stock with an instant rush. Most times, the engine/VSD and PDK transmission were utterly smooth and unobtrusive, except when you got into it, and then the transmission shifts went from invisible to forceful, quick and deliberate.

    Lastly is Overboost mode, which puts the VSD at full power.  Horsepower stays at 150, but torque gets boosted up to 150 lb.-ft. zero-to-60 times drop from the stock 911’s 5.0 seconds to about 3.6 seconds.  In Overboost, the exhaust is screaming with that distinctive sound that racing Porsches make and the electric motor and inverter whine sounds like killer bees behind you and, all the while, your eyeballs are crammed into the back of your skull.  Like a fine wine, Overboost is something that is a treat, savored for special occasions.  Overboost is suitable for about three or four runs before the VSD system dials back its power until its thermal management system cools itself down, which happened quite quickly.

    The Bottom Line

    The one significant consideration for the Vonnen VSD is the price, and it is a big one.  Currently, the Vonnen Shadow Drive costs about $75,000 installed in your 991-series Porsche 911 (2012-2019) or 981-series Cayman or Boxster. Write Vonnen a check and in a few weeks, you get back a faster, cooler hybridized Porsche that is faster than any Porsche that your buddies have. The VSD is compatible with the entire 991 and 981 series, including the Carrera, Targa, Turbo and GT3.  The exciting thing about the VSD is that you can move it from one compatible Carrera, Boxster or Cayman to another because it is a non-destructive installation mod.

    Vonnen Shadow Drive Hybrid System

    Taking it out on the road proves the technology works

    The current version of VSD is not for everyone, given it costs as much as some Porsches do today. Still, Vonnen is in development to support older generation Boxsters, Caymans and 996/997 Porsches.  They are even working on a VSD for air-cooled 911s.

    Beyond Porsche, Vonnen is looking at offering a VSD for other marques, too, but that is all they would reveal.  Vonnen expects that with an expanded application catalog and cost reduction efficiencies for the VSD components, future versions of VSD will be more affordable. With Vonnen’s Silicon Valley ethos of constant innovation and ruthless cost reduction, it is only a matter of time before a VSD will be within reach of mere mortals like myself.

    What impressed me the most is that with automobiles becoming more and more digital and emission systems becoming more complicated, the choices for vehicle performance mods have become much more limited.  The beauty of the Vonnen Shadow Drive hybrid system design is that it will work with those systems without modifying them.  Automobile electrification is inevitable, but for those who still love our internal combustion engines, adding a bit of electric charge to our rides is as good as it gets.

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