1. The Easy Rider 3 has the HT motor in the rear swingarm
The Easy Rider 3 with pedal support has the HT motor is in the rear swingarm, with the power directly on the rear axis. This is a convenient place for a tricycle with a low seating position, like the Easy Rider. The advantage of this motor is that it works immediately when you start cycling, so you can easily get going. Because the motor is at the back, the bike is heavier at the back compared to the front and the motor gives a lot of pushing power which helps you to move forward.
On the Easy Rider 2, the motor is in the front wheel.