Engineer Your Own Electric Motorcycle 2. Steps with PicturesDifferent Types of Motors TLDR As I said earlier, in theory there are many choices for these parts, in practice not so much due to price and availability of parts. All things considered, for a DIY motorcycle project you will get the most bang for your buck with a PMDC motor. Duct Sizing Excel Program' title='Duct Sizing Excel Program' />If you have a pile of cash to burn and you want to show off then splurge for the brushless PMDC. DC motors consist of one set of coils that moves called an armature located inside another fixed set of coils or permanent magnets, called the stator. The armature rotates with the drive shaft and the stator stays put. These are the relevant DC motor types Series Wound The field coils are connected in series with the armature coil. NES system is around for finding a while, and lots of consider it to be old, useless technology. Lots of great is old, its far away from useless, and in reality. Garbage Can Storage Plans Storage Sheds In Fort Worth Texas Garbage Can Storage Plans Diy Outhouse Storage Shed Shed Building Planner. In part one of this subject, I will list all the terms definitions that we can subjected to. These terms will include the following sections ConductorCable Terms. Powerful and efficient at high speed, series wound motors generate the most torque for a given current. Speed varies wildly with load, and can run away under no load conditions. Tougher to do regen with, but it is possible. A controller capable of going this with a series motor will be expensiveShunt Wound The field coils are connected in parallel with the armature coil. Shunt wound motors generate the least torque for a given current, but speed varies very little with load. Compound Wound a combination of series and shunt wound. This is an attempt to make a motor that will not run away under no load or if the field fails, yet is as efficient and powerful as a series wound motor. Permanent Magnet PM Magnets replace the field coils found in other motor types. Permanent magnet motors are either brushed or brushless. Brushed Motors Use mechanical brushes to make electrical contact with the rotor at the right time. PROS two wire control, replaceable brushes for extended life, low cost of construction, simple and inexpensive control. CONS periodic maintenance is required, speedtorque is moderately flat, brush friction increases at higher speeds reducing useful torque, poor heat dissipation due to internal rotor construction, higher rotor inertia which limits the dynamic characteristics, lower speed range due to mechanical limitations on the brushes. Brushless Motors These are essentially stepper motors without the cogs that allow steppers to stop the rotor. Acronis True Image Home 2011 Download Iso more. PROS Less required maintenance due to absence of brushes, SpeedTorque flat enabling operation at all speeds with rated load, high efficiency, no voltage drop across brushes, high output powerframe size., reduced size due to superior thermal characteristics, improved heat dissipation, higher speed range no mechanical limitation imposed by brushescommutator, low electric noise generation. OS_DuctSizer_1.png' alt='Duct Sizing Excel Program' title='Duct Sizing Excel Program' />CONS Higher cost of construction, Control is complex and expensive. AC Induction Motors Rotate at a fixed speed and so require the use of a transmission. While they are super efficient and have a high power output, these are typically used in EV Cars rather than motorcycles. Permanent Magnet AC PMAC Expensive and hard to find, but is capable of variable speed operation and ultra high motor efficiency. This type of motor is used on professional Brammo electric motorcycles. Analyzing Motor Specs The continuous ratings are what is important. Similarly, the loaded speed is going to be your max output RPM. The Rated HP is typically the torque level at which the motor can be run continuously without exceeding the temperature at which the winding insulation beaks down. Voltage Higher voltage systems are better, but they cost more. Running a motor at higher voltage generates less heat for a given power rating because the heat generated is proportional to the current draw and a higher voltage will give a lower current draw for the same power output. However as voltage increases so does the need for higher performance insulation, controllers, switches, etc. Chrome Remote Desktop Host Installer. It is useful to note that input voltage is proportional to motor speed, and the input current is proportional to the motor torque. Kilacycle racing electric motorcycle runs at 3. Volts. Other Motor Notes The physical dimensions will be a significant limitation for a motorcycle project. Making the cardboard mock up was an absolute necessity. Electric motors have a huge operating speed range, so you dont have to have a transmission. You dont even have to disengage the motor when you are coasting either. The motor wont have any resistance unless it is generating electricity, and it wont generate electricity if it isnt connected to a load. The controller electrically disconnects the motor for coasting. That is, unless you activate the regen. Duct Sizing Excel Program' title='Duct Sizing Excel Program' />There is a devoted section to motors and controllers in the excel document. I used it by plugging in different motors into the calculations to see how they affected the overall performance and required gear ration. My favorite suppliers for these parts were evdrives. I did NOT like Cloudelectric, who had bad prices and no original documentation. Hub motor vs Traditional motor. In theory a hub motor does make more sense for energy efficiency, weight distribution, and space saving. Eliminating a roller chain drive could increase efficiency by 2 3. On the other hand, your hub motor cant take advantage of an optimized transmission system. Oh, and good luck finding one that fits your bike I shopped around for a hub motor but there are hardly any options to choose from. Most of the products out there are made for mopeds and would be under powered on a motorcycle. Plus, a wheel is a pretty special part on any vehicle. It is designed to fit within a specific gap in the rear suspension forks and is made for one size of tire. What are the chances of finding a perfect drop in replacement hub motor that matches your specific wheel dimensions Controller Considerations here are a lot of EV motor controllers to choose from. Alltrax, Curtis, Kelly are the biggest name brands. Alltrax is easy to use but none of their products have regen. Duct Sizing Excel Program' title='Duct Sizing Excel Program' />Free 14x 20 Shed Plans With Material List 12 X 12 Shade Screen 8x12 Heat Duct 8x12 Utility Trailer. Converting a motorcycle to an electric vehicle is not as difficult as you might think. An EV conversion can be done with 100 off the shelf parts with the aid of. Notice that corrugated duct is so restrictive it should never be used The same is also true of flex hose that has a rough interior. Also notice that in spite of some. The Alltrax controllers require a 1. Programming an Alltrax is easy and involves choosing your throttle input type and how the controller should react to this input. You can set the controller so that either the 0 ohm reading or the 5. It is important that you choose 0 ohms as the no output setting If you choose 5. Make sure the motor controller is compatible with your electric motor before buying anything. Youll have to find a motor compatibility chart or list provided with the controller. Controllers use pulse width modulation to efficiently control motor speed. Motor and controller compatibility is determined in part by the acceptable range of pulse frequencies. Beware getting a significantly oversize controller which can deliver more power to a motor than it is capable of handling. An undersized controller isnt dangerous but it wont fully utilize the potential of your motor. Heat Control Both the motor controller will generate a significant amount of heat in use. I made a scoop on the bottom of the bike from a paint drip tray to duct air onto the motor. Unless your controller has an integrated heatsink or fan then it will need a heatsink of some sort. You can find one online somewhere or you can make your own and use this one simple equation to estimate its overall effectiveness.