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A rotax 125cc gas powered kart engine puts out 21kW (29hp) at 11,500rpm and 21Nm at 8750rpm, weighs 24kg (60lb) and costs around $3,500 rrp. To keep the gas karts honest we need an electric motor and battery pack that is not too much heavier to keep the handling sharp and a power output of at least about 15kW. With a much higher torque output and a wider torque band, an electric motor with a slightly lower power output will beat gas in pretty much every situation except top speed.
Item location: Port Townsend, Washington, United States
Shipping to: United States, Canada, United Kingdom, Denmark, Romania, Slovakia, Bulgaria, Czech Republic, Finland, Hungary, Latvia, Lithuania, Malta, Estonia, Australia, Greece, Portugal, Cyprus, Slovenia, Japan, Sweden, Korea, South, Indonesia, Taiwan, Thailand, Belgium, France, Ireland, Netherlands, Poland, Spain, Italy, Germany, Austria, Bahamas, Norway, Ukraine, Croatia, Republic of, Malaysia, Colombia, Costa Rica, Barbados, Bangladesh, Bermuda, Brunei Darussalam, Bolivia, Ecuador, Egypt, French Guiana, Guernsey, Gibraltar, Guadeloupe, Iceland, Jersey, Jordan, Cambodia, Cayman Islands, Liechtenstein, Sri Lanka, Luxembourg, Monaco, Macau, Martinique, Maldives, Nicaragua, Oman, Peru, Pakistan, Paraguay, Reunion, Vietnam, Uruguay, China, South Africa, New Zealand, Singapore, Switzerland, United Arab Emirates, Qatar, Kuwait, Bahrain
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A popular high output, smallish electric motor is the Motenergy (previously Mars) brushless motors. We thought they were about the best electric equivalent to Rotax, so we selected the ME1114 which will deliver over 20kW (27hp) on 78V, a peak torque of 98Nm at 0rpm, weighs 16kg (22lb) and costs around $900. A cheaper option is the ME1117 with 20kW peak weighing 10kg and costing about $600.
Ms word for mac. You can get high power RC model motors with euiqalent power ratings that are lighter and cheaper, but the Motenergy motors will reliably run all day in a small electric vehicle, where as the RC model motors need to be derated for gokart use and are more prone to overheating and failures.
As well as the motor, you still need a controller and a battery pack. We're using a brushless PMAC (permanent magnet alternating current) motor which means instead of brushes, you need an electronic controller to turn the coils in the motor on and off. These give greater efficiency, power, control and reliability in a very compact package, but they do require a more expensive motor controller which is likely to be at least as expensive as the motor. In this case we are using a Sevcon size 2 controller which is reliable european brand and is fully programable which retails for about $700.
So for about half the price of a new Rotax motor, ($1600) we can buy a new electric motor and top spec controller with a similar power output to the Rotax.
$892.50Buy It Now2d 19h, Click to see shipping cost, 30-Day Returns, eBay Money Back Guarantee
Seller:evdrives(3,260)100%, Location:Port Townsend, Washington, Ships to: US & many other countries, Item:390993136642Motenergy ME-1114 Brushless DC Permanent Magnet Motor - 72VDesigned for long life. No brush maintenance. The motor is 92% efficient at voltages between 24 to 72 VDC. Continuous current of 125 amps AC (180 Amps DC into the motor control). This is a 3-phase, Y-connected Permanent Magnet Synchronous Motor with an axial air gap and a Sine/Cosine Speed Sensor. It has two stators with a rotor in the center. Output Power of 10 KW Continuous, 24 KW Peak (at 72 volts) Continuous current of 125 Amps AC (180 Amps DC into the motor control)Peak current of 420 Amps AC for 1 minute (600 Amps DC into the motor control)Timed for counter-clockwise rotation (can be changed to clockwise) This is a 4 pole motor (8 magnets)Motor weight of 35 pounds.This three-phase motor requires a motor controller (Sevcon Gen4 or Kelly controllers) that we currently do not offer. ---- -- -- ---- RETURNS ---- -- -- ----You must contact us by email for a Return Merchandise Authorization (RMA) number prior to returning an item to the manufacturer or to us. This RMA number must be clearly marked on the label attached to the shipping box. Packages without an RMA number will be refused and returned to the shipper. Warranty items returned with no fault found will be sent back to the customer at the customer’s cost, otherwise, a replacement will be sent. ---- -- -- ---- REFUNDS ---- -- -- ----If you purchased by mistake and would like to return an item for a refund, a 10% restocking fee will apply for uninstalled parts and 30% for parts that have been installed that are tested functional. Shipping costs are non-refundable. ---- -- -- ---- WARRANTY ---- -- -- ----Motors, motor controllers and battery chargers are covered by the manufacturer’s warranty. You can contact us for warranty issues and we will provide information on the return of your product to the manufacturer. All the rest of the products we sell are warranteed free of most defects for a period of 1 year from our customer’s date of purchase unless otherwise specified in the listing. EV Drives will not be liable for any cost of service calls, installation, alleged harm, both personal and materially and/or any other damages resulting from the installation of these parts.Condition:New, Type:Brushless Permanent Magnet Motor, Brand:Motenergy, Model:ME-1114, MPN:ME-1114, Country of Manufacture:China, EV Drives Product Code:MOT-ME1114
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