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wws944

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About wws944

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  • Birthday 11/23/1956

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  1. @TerryB - nice overview of the Electrovair II. Silver-zinc batteries were a dead end. AC induction motors have been around since Nikola Tesla days, and are used by Elon and Co in their cars today. (Though half as many as they used to - induction on one end of the car and PMSRM on the other end these days.) The inverter description is more interesting. They attempted to use SCRs, but were clearly pushing the limits of solid state electronics of the day.
  2. I've been a techie (and car lover!) all my life, and spent my career in Silicon Valley and the computer world. This stuff is highly interesting to me. The Corvair article that @alsancle posted is quite interesting, and has a lot of stuff in it that we still see used as arguments against EVs today. Even though the vast majority of those arguments are either no longer true, or never were true. Doesn't stop me from occasionally jumping in my 35 y/o 944 and enjoying shifting through the gears, or taking in the sun with my Reatta convertible! ICE cars will be with us for
  3. The not-so-secret secret is that the bigger the battery pack, the more power available for the motor(s) to draw - given the inverter can handle the power. Ludicrous mode (0->60 in under 3 secs) in a Performance Model S can draw 1500+ amps at 400V! They borrowed some tech from SpaceX to safely handle the high current. Latest models have upgraded the inverters to use SiC instead of Si IGBTs too. More efficient, so less heat to deal with. Also the highly efficient PMSRM motors introduced with the Model 3 are now being used in the rest of the lineup. The Tesla Semi prototype uses four Mod
  4. That was, in fact, their intent. Build something someone would aspire to own - like if they won the lottery. Not some 'weird mobile'. Hence the Tesla Roadster which, with a lot of help from Lotus, could match/exceed the performance of other high end performance cars. Tarpenning, Eberhardt, and Musk were all sports car guys. Speaking of EVs in the 1960s, the first EV "cannonball" took place in 1968 between a team at Caltech in Pasadena, and a team at MIT. The Pasadena team raced to the east coast in a converted VW van, and the MIT team raced to the west coast in a converted Cor
  5. There is an Electric Shopper at the EV Museum in Kingman, AZ. It's not much more than a golf cart or something you'd see rolling around a factory floor. The EV Museum is co-located with the Route 66 Museum in the old Kingman Powerhouse building. Not sure if they have a Henny Kilowatt, but wouldn't be surprised if they do.
  6. GM developed an electric Corvair prototype in the 1960s. There are videos on youtube of it driving around the test tracks, e.g.: There is a fun book that was published in 1996 that chronicled the development of the EV1. It is called "The Car That Could", by Michael Shnayerson. In it, he goes through a few of the earlier GM research efforts. But mostly the Sunraycer solar car of the mid-1980s, which led to the Impact EV concept car, when Roger Smith then committed into a production version that became the EV1. It is a great read. The fellow who led the EV1 effo
  7. With a 20 MPH top speed, aero probably isn't a big factor in a Baker. As most of us probably know, a lot of the early electrics were sold to women in big cities - who often wore Big Hats. The motors and their controllers weren't very efficient back then compared with what is being done in modern times. Actually I do have a question about the controllers in antique electrics. But at the risk of drifting my own thread, perhaps I'll post it in the "Electric Cars (Milburn, Baker, etc.)" forum. Lot less traffic in there tho...
  8. Maybe a Fisker Karma? They were PHEVs that have a neat solar panel integrated into the roof. It and a number of other cars that have been available for a while now. The panels can basically tender the 12V battery and in most cases, usefully, run the HVAC fan when the car is parked. Helps keep the interior cooler. Charging the traction battery pack in a hybrid or full EV is another matter. Hyundai/Kia are starting to put 200W of solar on some of their hybrid cars now. When parked outside in the sun, e.g. while at work, it can ideally give a couple of free miles of driving per
  9. I have a friend who has been blind since birth. Really an amazing guy who has led quite a productive life, very computer/tech literate, and so on. His wife is blind too - so they've never "seen" each other. I've often wondered what his reactions would be if he were to suddenly have vision. (She is decent looking, so he'd be happy about that!) "A phone with a camera" is the wrong way to look at it. They are really handheld computers with a phone app.
  10. Many years ago, I was on a jury for a M1 case. The perps had rented a car for their hit job, drove it several hundred miles to the scene of the crime, did the deed, drove several hundred miles back, and turned the car back in to the rental agency. Along the way home, they were hiding the murder weapon in the trunk of the car - and it fell into a gap between the seat and the fender well. Not being the brightest guys in the world, they actually turned the rental car in with the gun still lost in the back! Then they spent the next few weeks trying to rent the same car again so they could fish
  11. Or octal. Mr Cray preferred octal. Even in his 64-bit machines. P.S., typing this on my linux desktop. (Ubuntu flavor.)
  12. Anyone know what happened to this Baker? Flick is from 1960 or so: https://skysolar.co.nz/1912-baker-electric-car/ I found Charles Escoffery's obit here: https://www.legacy.com/obituaries/latimes/obituary.aspx?n=charles-escoffery&pid=163576925
  13. Yep. The Japanese actually listened to Deming.
  14. Jay called it a valve cover. The thing that confuses me is the coolant connection on the end (front) of it. The engine photo that @1937hd45 posted has a very different cover on it. Jay said the engine was an off the shelf Buda engine. So perhaps it was a generic Buda cover that at some time in the past replaced the porous Owen Magentic cover? Fortunately Jay had the original cover on his and and the means to make a replacement.
  15. Jay Leno just released a new video on his: It is interesting that this car apparently doesn't have its original valve (?) cover. The Leno car has one with "Owen Magnetic" cast in the side. Jay said the original was so porous that it leaked oil out of every pore, so he couldn't really drive the car. He scanned it and used a 3D printer to mock up a replacement. Once satisfied with it, he had a shop make a new one out of aluminum.
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