On 20 Apr 2021 at 22:34, Lee Hart via EV wrote: > That's pretty much what James Worden of Solectria did with the Sunrise, > and Alex Krause did with the Evergreen. Build a (relatively) normal > car, but with the emphasis on streamlining and light weight.
Exactly! And others, from the Sundancer to the original Aptera concept. But you're right; the mainstream automakers - even Tesla - can't seem to imagine much of anything but the same big, heavy cars and trucks that their customers are used to filling with gasoline or Diesel fuel. And in fact, just as with ICEVs, the trend in production EVs is mostly toward still bigger, clumsier SUVs and crossovers. BTW, for the record, the Comminication Mini-Evergreen was designed in the late 1980s and early 1990s by Andreas Klasen. http://www.solarmobil.net/mini.htm It wasn't sleek looking, but it was quite light and efficient. Klasen said that 14 square meters of PV cells could provide it with enough energy for 10,000km per year. I don't know whether he demonstrated that or calculated it. The Evergreen weighed 330kg (without battery) and could carry 4 passengers, and a battery of up to 470kg. I estimate that a modern lithium battery of 470kg including housing would have a capacity of around 75kWh, which would give the Evergreen a range of about 800km (500mi) in warm weather. You were probably thinking of the Evergreen adapted by Axel (not Alex) Krause of Brusa in the mid-1990s. He fitted an Evergreen with Brusa's then- largest drive system and 180v of 100ah Saft nickel cadmium modules. Krause's Evergreen had a warm weather energy consumption (from the mains) of 11-12.5 kWh/100km, or 175-200 Wh/mile. Warm weather range was 220km with an 18kWh battery. This represents a remarkable consumption at the battery of 8.2kWh/100km (about 130Wh/mi). FWIW, the original Solectria Force (Geo Metro conversion) used around 150- 160Wh/mi when driven at a steady 45mph in warm weather. David Roden, EVDL moderator & general lackey To reach me, don't reply to this message; I won't get it. Use my offlist address here : http://evdl.org/help/index.html#supt = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = The telegraph is a kind of a very, very long cat. You pull his tail in New York and his head is meowing in Los Angeles. Radio operates exactly the same way: you send signals here, they receive them there. The only difference is that there is no cat. -- Albert Einstein = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = _______________________________________________ Address messages to [email protected] No other addresses in TO and CC fields UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub ARCHIVE: http://www.evdl.org/archive/ LIST INFO: http://lists.evdl.org/listinfo.cgi/ev-evdl.org
