Sunday, August 17, 2008

Automatic Transmissions

The problem with converting an automatic transmission vehicle to Electric is that the automatic transmission is designed to shift based on the needs of the internal combustion engine - not an electric motor. Also because the automatic transmission needs to keep moving automatic transmission fluid (ATF) to shift gears, the transmission shaft must keep spinning, even in idle. This inefficiency leads EV purists to only convert standard transmission cars. There is even a bit of snobbery with some groups providing conversion kits or maybe just laziness because they only want to deal with what they know. The fact of the matter is, an EV conversion from an automatic transmission vehicle WILL WORK. More time and money will be involved, but it can be done. Other people should know this, because at some point ONLY AUTOMATIC TRANSMISSION VEHICLES WILL BE AVAILABLE FOR CONVERSION! There.

The other thing that ticks me off is that a particular conversion company (mentioned earlier on this blog) only supplies an adapter plate for 6.7 inch motors to the VW transmission (same bolts on standard as on automatic). And it's relatively cheap - under $300. But, what if I want to put on a 9" motor? Do I pay 'EV Parts' in Canada $1100 for a custom 9" to VW adapter plate made of aluminum? I either dish out the cash for a custom plate or... make my own adapter plate?

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Sunday, August 03, 2008

1.21 Gigawatts! 1.21 Gigawatts!


Tonight, I learned that the 'Back to the Future' movies revealed some oddly accurate findings in the real world.

1. FACT. The true pronunciation of the Greek prefix giga for n x 109 (billions) is with a soft 'g' like in the movie script when Doc Brown pronounces it correctly - 'jiggawatt.' The SI acceptance of this prefix was not until 1960 (some 5 years after Doc Brown's famous outburst, but perhaps he deduced what his future-self meant when he heard the term in the video from the future.) My college professor in physics, the late Dr. Asim Barut, always pronounced it "jigga" - and he knew better than anyone else.

2. FACT. A bolt of lightning produces anywhere from 1 gigawatt to 100's of gigawatts of power in it's short life span.

3. FACT. If I took the literal translation of my name (Todd = Middle English for FOX, and Mitchell = Hebrew name MICHAEL) and flipped to MICHAEL FOX, who starred in the 'Back to the Future' movies, this is just plain eerie.

Aside from my name on different internet forums being variations of FastbackToTheFuture, I have no intention of turning my EV conversion into a time machine. If indeed 1.21 gigawatts of power is needed for time travel, then I would need more than 3000 times the battery voltage to resuscitate a Monty Python parrot. And that's more than I'm willing to fit under the back seat.

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Saturday, August 02, 2008

VW Script

The metal placard "automatic" under volkswagen on the fasty will be replaced with the word "electric." Now I just need to give the data to someone with a CNC router and I have a plastic or aluminum script which will look just like the original.