http://www.ravoil.com/electric-car-motors-2/
Electric Car motors
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Koolatron Compact Kooler $79.99 The Koolatron(tm) Compact 12V Cooler was specially designed to fit in those tight spaces between and behind the seats of your car, van or truck. A 12-volt power cord plugs into your vehicle’s cigarette lighter to keep your food and drinks cold and fresh, without the use of ice. The cooler can be set to keep your food up to 40 degrees colder than the outside temperature or can be used as a warmer…. |
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Roadpro 12V Hot Pot, 20 oz. $11.25 - Plugs Directly into Your Cigarette Lighter Socket – Outer Lid Can be Used as a Cup – Inner Lid Closes Securely to Prevent Spilling… |
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Koolatron P65 Kargo Cooler – 12v Portable Cooler Which Holds 42 (12 Oz.) Soft Drink Cans $132.99 The Koolatron P-65 Kargo Kooler solves an age-old problem of motorized travel. Have you ever noticed that when you pack a lot of luggage into your vehicle, the Koolatron kargo cooler always gets placed at the bottom of the pile? Have you ever noticed this phenomenon just as you were starting to get really hungry? Koolatron P65 kargo Kooler has now come up with an innovative solution. The 33 quart … |
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Charlie Rose with Jane Arraf, Romesh Ratnesar & John Burns; Bill Blakemore, Freeman Hrabowski & Anthony Marx; Bill Carter & Doug Ellin (June 7, 2006) $24.95 First, guest host Jane Arraf talks to Romesh Ratnesar, world affairs editor at Time magazine, and John Burns, The New York Timesbureau chief in Baghdad about the situation in Iraq, and the investigation into the alleged abuses at Haditha. Two major military investigations are currently looking into whether U.S. Marines deliberately killed 24 Iraqi civilians last November in the town, and then cove… |
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AR Blue Clean AR383 1,900 PSI 1.5 GPM 14 Amp Electric Pressure Washer with Hose Reel $153.72 This AR Blue Clean Electric Pressure Washer gives you the power and convenience you need with a built-in hose reel and accessory storage that keep essentials organized and easy to access. Pressure (PSI): 1,900, Flow (GPM): 1.6, Motor: Universal, HP: 1.5, Volts: 110, Amps: 12, Pump: Axial radial, Drive: Direct, Gun: AR easy trigger auto stop, Nozzle Type: Variable angle spray, Orifice Size: 1.10, H… |
Pininfarina Bluecar – Electric Car – 79th International Motor Show, Geneva 2009.
Electric Car Range: How is it affected by the Electric Motor wattage?
Imagine you have an electric car with a specific battery capacity and you want to test the effect of the electric motor to the car’s range.
So, assume you have 2 motors: one with A KW and another with 5A KW.
If placed on the car and used to test the range till total battery depletion (assuming same constant velocity) which motor would lead to higher range?
If the same car is moving at the same speed, it will use the same amount of energy to move it the same distance. (Weight difference between the motors will probably be negligible). The energy different motors use to supply this will vary
Assuming that both motors are rated high enough to maintain the desired speed, the biggest factor affecting range will be motor efficiency. The power rating has little to do with efficiency. It is possible that either the larger or the smaller motor could deliver the better range.
Generally electric motors with lower electrical resistance, better insulation, lower magnetic reluctance and smaller air gaps will have higher efficiencies. Running a motor closer to its voltage limits will mean less power losses. (Power losses=ampxampx resistance)
This link has some typical examples of motor efficiency curves versus output power.(EFF v Wo)
http://www.cyclone-tw.com/dc24.htm
Work out the power range that you car will need, to maintain your desired speed. Then you can then look for the motor with the best efficiency curves to match your needs.(and gearing).
In short it is more a matter of how well the motor is made and how well it matches your needs then what it is rated at. A larger motor will usually run more efficiently at its rated load. If it is running well below that then the smaller motor may well give best results.
The trade off for longer range is usually slower acceleration.
I’ve come across an excellent resource on how to convert your gas guzzler into a highly efficient Electric Motor vehicle. And the good news is that building Electric Cars isn’t very hard to do. You will need 10 – 12 deep cycle batteries, an electric motor battery charger, controller and (of course) a good set of Electric Car Conversion Motor plans..... Click here to read the rest of the article: Electricity4GasReview
