Electric 928 Porsche
11-25-2010, 03:24 AM
#18
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Thank you all for your support.
Now Mr. Bailey......yes I have around $30,000 invested and it is a hobby. But this hobby is also my daily driver I put over 11,000 miles a year on. How many miles do you put on your race car......and how much do you spend on it ?
Jeff McCabe
Now Mr. Bailey......yes I have around $30,000 invested and it is a hobby. But this hobby is also my daily driver I put over 11,000 miles a year on. How many miles do you put on your race car......and how much do you spend on it ?
Jeff McCabe
11-25-2010, 12:55 PM
#19
electrics
Wifes ride is 09 altima hybrid- 40 hp electric motor makes 200 ft lbs now. I just wish it was 100 hp motor. 0-60 in 7 seconds not bad. 928 is more fun to drive.Ray
11-25-2010, 01:14 PM
#20
I also have a EV as my daily driver to school - Norwegian produced car called "buddy". Or a 2,4m long fibreglassbox, as some others may call it
http://www.puremobility.com/
http://www.puremobility.com/
11-25-2010, 02:45 PM
#21
Chronic Tool Dropper
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Someplace there was an interesting guide to converting to electric-only. One of the things recommended is to be sure to convert a car that you actually like to drive. For instance, old Toyota mini-pickups are easy, but then you are doomed to driving an old Toyota mini-pickup. If you don't want to drive it now, why would repowering it make it better? So sfind a car you enjoy driving for reasons beyond the horsepower, and use that as your conversion platform.
So the question would be, what car do you think would make a better conversion candidate? Toyota picked a small car with a big passenger space to make a Prius. Their Camry hybrid is OK except you give up economy with the large box, and utility with the battery package sitting up in the trunk aft of the rear seats. The new Nissan Leaf is all-electric and would be great for 90+% of the casual driving we do. But K likes to sit up higher in her 4Runner, feels "unsafe" in smaller cars like the 928. Maybe the 4Runner would be a good candidate, except that the driveline is probably the most durable part of the car. From a pure economics point of view, my 'perfect' hybrid would include a tine (<1 liter) clean Diesel charge-upporting a wheel-motored electric. No mechanical connection between the Diesel and the wheels, so the Diesel could run at its most efficient cruise speed whenever it's needed, regardless of car speed. 4 Passenger capability but really a two-seater ala 928, battery racks under the floors the length of the car for easy pack cooling. Maybe the ability to quickly R&R the Diesel package and swap in more batteries for local-only duty, maybe where the fuel tank and exhaust system sit now across the rear.
It would look a bit funny on those skinny little high-economy tires though.
So the question would be, what car do you think would make a better conversion candidate? Toyota picked a small car with a big passenger space to make a Prius. Their Camry hybrid is OK except you give up economy with the large box, and utility with the battery package sitting up in the trunk aft of the rear seats. The new Nissan Leaf is all-electric and would be great for 90+% of the casual driving we do. But K likes to sit up higher in her 4Runner, feels "unsafe" in smaller cars like the 928. Maybe the 4Runner would be a good candidate, except that the driveline is probably the most durable part of the car. From a pure economics point of view, my 'perfect' hybrid would include a tine (<1 liter) clean Diesel charge-upporting a wheel-motored electric. No mechanical connection between the Diesel and the wheels, so the Diesel could run at its most efficient cruise speed whenever it's needed, regardless of car speed. 4 Passenger capability but really a two-seater ala 928, battery racks under the floors the length of the car for easy pack cooling. Maybe the ability to quickly R&R the Diesel package and swap in more batteries for local-only duty, maybe where the fuel tank and exhaust system sit now across the rear.
It would look a bit funny on those skinny little high-economy tires though.
11-26-2010, 03:25 AM
#22
Rennlist Member
so does a gas engine with a bunch of HP dumping the clutch! 
( athough not as easy as taking off in an electric car)
The other issue with the electric car and its flat torque curve, is that at the end of the rpm range, the torque falls off rapidly, so if there was a gear box you could keep it closer to the max HP range. this is the problem with most electric vehicles. all they would need is one gear change at about 80mph but they didnt do it because it adds cost and complexity.
( athough not as easy as taking off in an electric car)
The other issue with the electric car and its flat torque curve, is that at the end of the rpm range, the torque falls off rapidly, so if there was a gear box you could keep it closer to the max HP range. this is the problem with most electric vehicles. all they would need is one gear change at about 80mph but they didnt do it because it adds cost and complexity.
11-26-2010, 11:30 PM
#23
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so does a gas engine with a bunch of HP dumping the clutch!
( athough not as easy as taking off in an electric car)
The other issue with the electric car and its flat torque curve, is that at the end of the rpm range, the torque falls off rapidly, so if there was a gear box you could keep it closer to the max HP range. this is the problem with most electric vehicles. all they would need is one gear change at about 80mph but they didnt do it because it adds cost and complexity.
( athough not as easy as taking off in an electric car)
The other issue with the electric car and its flat torque curve, is that at the end of the rpm range, the torque falls off rapidly, so if there was a gear box you could keep it closer to the max HP range. this is the problem with most electric vehicles. all they would need is one gear change at about 80mph but they didnt do it because it adds cost and complexity.
Im thinking about using an Gear venders overdrive unit in my new Electric im building. Its a factory Five 427 Roadster. I will be using a motor that will be capable of twice the horse power and four times the torque of my 928.
This should give me a topend well over 100mph, but still have a low enough direct drive rear gear for the bottom end.
Jeff
