Friends Hello everyone. Here is the very first test that showed that the switch can really be a useful device for those who force the motors with a triangle. Its main function is to reduce starting currents, acceleration in a star, and then switching to a triangle. This idea is useful when the driving mode involves frequent acceleration and braking. These are simple 3 double switches for 130 p for 220 volts and 15 amperes. Three contacts close the triangle circuit, and two close the star circuit. This device can also be assembled on powerful keys, on a relay. Ideally, it could be integrated into the controller, from which not three but six phase wires would come out, and the switching would be automatic or semi-automatic. This idea is close to rewound motors in the Slavic circuit, which combines the positive qualities of a star and a triangle, speed, traction, economy. This experiment confirmed in practice the theory of the usefulness of the switch, and it will be used in all my subsequent further searches. For those who are new to the channel. This is a hobby, the goal of which is to find simple budget solutions that anyone can repeat for their own personal electric transport. At the moment, the following scheme has been found. Base, Bicycle, motor from a gyro scooter located at the bottom of the carriage between the pedals as in this video • Electric bicycle from a Mid D gyro scooter ... Drive, belt on the rear wheel using a pulley on a ratchet on the left side of the wheel. The sine controller is also from the same gyro scooter, its advantages are that it is not expensive and can be programmed for specific tasks. On a motor with a stator width of 30 mm, I managed to accelerate a standard untwisted motor to 50 km per hour, in a triangle. At the same time, the bicycle has excellent dynamics and traction, easily climbs a hill on the snow. All my experiences and experiments are aimed at finding budget solutions so that more people have a desire to switch from a moped to an electric bike. And for those who are already thinking about how to electrify their bike to increase its capabilities and use it as an alternative to public transport, which will significantly reduce the cost of daily trips to work. For delivery, they just need a reliable solution, and most importantly, economical in battery consumption. From my experience, I believe that for the city, for riding on sidewalks, high speeds are not needed, from 25 to 30 km per hour is more than enough, rather, traction and dynamics of speed gain in combination with a large power reserve are important. And the switch will allow you to ride on the roads at speeds from 40 to 50 km per hour. I see only advantages in this solution, compared to motor wheels. The main advantage is that riding on a belt with coasting on a synchronous motor controlled by a sine wave is much more comfortable due to the fact that the motor is not in the wheel, which means the rear wheel can be light and sprung. Much more economical due to coasting, quieter and softer. Listen to the noise on the asphalt from this bike, it is almost inaudible, despite the fact that the controller in this experiment is not sinusoidal. Well, the most attractive thing in this scheme is that it is simple and budget. The price of a gyro scooter motor is no more than 1000 rubles. Of the minuses is the appearance, it is difficult to make a bicycle beautiful using a belt, but this is different for everyone. There is already experience of operating this, the scheme described above in courier mode in Moscow, on a 24 mm motor in a star, the power reserve is 70 km on a 13s8r battery with a capacity of 24 ampere hours without the help of pedals. Yes, on a 250-350 watt gear motor it will be possible to drive all 100, but I also consider this result good. I thank everyone who leaves useful advice in the comments and writes criticism on the topic. It helps a lot!!!! A new cycling season has begun, there are many new projects ahead that have already been implemented, and those that are still in development, useful life hacks, rides and experiments, new sections and interviews. The next step in the development of the idea of ​​simple, inexpensive individual vehicles is homemade, durable, beautiful frames made of a variety of materials. The drive, motor, controller and basic mechanics have been found, it's time to get down to design and make the electric bike beautiful, comfortable, attractive and affordable!)