Free Republic
Browse · Search
News/Activism
Topics · Post Article

To: UNGN
Number 1 we pay .14/KWH and number 2, your calculations are for a vehicle with 27 HP.

That is 27 HP MAX

WRONG. WRONG. WRONG.

27 HP is the average needed to overcome drag at about 65 mph. And that has nothing to do with whether the car is electric or a simple gasoline powered car. Both require about the same hp. Interestingly, a Corvette, because of its sleek design, only needs about 11.8 hp to overcome drag at 65 mph.

Now of course you're wondering why it is many cars have such powerful engines. Well, it's not to overcome drag. It's to improve acceleration. And there's nothing that says a plugin can't have a 150 hp engine.

You'll find a 30 mpg Gasoline powered crapbox is still cheaper to operate.

It isn't cheaper. The cost of electrical energy produced by coal fired turbine is cheaper than the cost of mechanical energy delivered by an gasoline IC engine.

144 posted on 01/01/2007 2:23:51 PM PST by mc6809e
[ Post Reply | Private Reply | To 99 | View Replies ]


To: mc6809e
I agree with that simple law of physics. It is also possible for an Ion Drive to accelerate a space ship to speeds of over 100,000 miles per hour. But not at a practical rate of acceleration.

The problem I think many engineers are faced with today is the fact that they are trying to convert mechanical energy into electrical energy then turning it back into mechanical energy. The loss of efficiency is predictable and difficult to overcome.
155 posted on 01/01/2007 2:39:12 PM PST by PSYCHO-FREEP (Maynerd Blazejewsi for President '08! (The third party choice))
[ Post Reply | Private Reply | To 144 | View Replies ]

To: mc6809e
WRONG. WRONG. WRONG.

27 HP is the average needed to overcome drag at about 65 mph. And that has nothing to do with whether the car is electric or a simple gasoline powered car. Both require about the same hp. Interestingly, a Corvette, because of its sleek design, only needs about 11.8 hp to overcome drag at 65 mph.

Now of course you're wondering why it is many cars have such powerful engines. Well, it's not to overcome drag. It's to improve acceleration. And there's nothing that says a plugin can't have a 150 hp engine.

Dude, go to your Link again and Ask yourself "where does the 300 watt hr/mile from the calculator come from"

The answer is, "it comes from Here "

Where you will see that 300 watt-hr/mile is for a MASSIVE 20 hp motor (7 hp nominal).

I'm sorry, but on this planet, I will not be driving a 20 HP car to work anytime soon (unless, no matter how "cheap" it is to operate.

157 posted on 01/01/2007 2:42:57 PM PST by UNGN (I've been here since '98 but had nothing to say until now)
[ Post Reply | Private Reply | To 144 | View Replies ]

Free Republic
Browse · Search
News/Activism
Topics · Post Article


FreeRepublic, LLC, PO BOX 9771, FRESNO, CA 93794
FreeRepublic.com is powered by software copyright 2000-2008 John Robinson