![]() ![]() This type opens the door for conventional powder metal parts in the motor frame, which could provide design advantages. The derailleur system won’t offer the same torque multiplication with hub drive motors because it’s already sitting in the hub at the final drive axle. However, today there are larger hub drive motors that can power the vehicle up hills. Small hub drive motors are only good for flat surfaces. Hub drive motors sit - you guessed it - in the hub of the wheel and are typically light and small. These were introduced in part because early crank drives were costly. You can use a derailleur system with crank drive motor to actually multiply the torque for expanded hill-climbing prowess. This makes them useful for climbing hills, something that smaller hub drive motors are not ideal for. ![]() This allows the user to power the bike by pedaling while getting an assist from the motor along the way. The great thing about crank drive motors is they can easily integrate with common gear systems. These were the first advanced electric motor to see frequent use in bicycles. There are two types of electric motors common in electric bike motor design: Let’s look at how all these design considerations come into play by vehicle type: But with e-motorcycles and some other vehicles, heat management becomes more difficult. Electric bikes are one exception to the rule. Not every smaller electric vehicle requires a big motor generating huge amounts of heat. If the engine gets too hot, it stops working, and that’s a problem for someone renting an e-scooter to travel across half of downtown Pittsburgh. The basic designs of the actual motor have not changed nearly as drastically as the battery designs.Įlectric motors still have some of the same inherent weaknesses they’ve always had – excessive heat generation being one of those. However, much of that effort focus on increasing battery performance. The star of every e-mobility product is the motor, so let’s focus on that.Ī lot of money and research has gone into designing better electric vehicles, particularly in traditional automobiles. What Types of Motors Go Into These Designs? While these three vehicles are similar, each has nuances you should account for when drawing up a design. We’ve also seen many used in our rural Pennsylvania backyard. These alternative methods of transportation are exploding in popularity, especially in urban areas. ![]() This is particularly for vehicles that need more power, like with e-bike motor design.Į-Bikes, e-Scooters, e-Motorcycles – Design Considerations and Challengesįor the purpose of this article, let's look at three main ways to get around: However, there are some design challenges manufacturers and their suppliers are still trying to overcome. It’s reasonable to assume that electric motors will eventually become the norm in small, personal vehicles. These “alternative” motors are used across an increasingly robust market that’s ever more prevalent in day-to-day life. Electric motor design for personal transport - including e-bikes, e-scooters and e-motorcycles – has come into its own in the past decade. ![]()
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