Questions About Electric Cars - Page 3 - Chevelle Tech
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post #31 of 32 (permalink) Old Jan 30th, 19, 6:38 PM
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Re: Questions About Electric Cars

Originally Posted by OO52 View Post
Article in the March issue of Hemmings Muscle Machines about two 2019 COPO Camaros Chevrolet is building.
The first is a 427 LSX of which only 69 will be built. Customers can register for a chance to buy one.
Second is an eCOPO. 2019 all electric COPO Camaro with an electric motor rated at 700 HP and 600 lb-ft of torque bolted to a T400. This new motor will have an LS bell housing pattern and crank flange. 800 volt battery pack.
The future looks interesting.

The cool thing about that eCOPO is the 600 ft pounds and 700 hp is instant.

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post #32 of 32 (permalink) Old Jan 30th, 19, 7:03 PM
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Re: Questions About Electric Cars

Originally Posted by StevenS View Post
The cool thing about that eCOPO is the 600 ft pounds and 700 hp is instant.
Induction motors do not create maximum torque under locked rotor conditions (0 rpm), and they create no power at 0 rpm either. (nothing else makes any power at 0 rpm either) The torque curve of an induction motor at 0 rpm starts out at some value below the max torque it can make, and goes upward at some rate or another as rpm increases (depending on several facets of its design), and peaks close to synchronous rpm. Synchronous rpm in common terms is the speed at which it "wants" to run under no load. As motor speed further increases past the peak torque, torque very quickly drops to zero. The zero crossing occurs at synchronous rpm. Synchronous rpm is determined by two things: The number of magnetic poles in the rotor and the frequency of the voltage powering the motor. You can get lots of different behaviors out of a motor with a variable frequency drive, but full power or torque at 0 rpm is not one of them.

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