In theory, the advantages of Gas Motorcycles range extenders are similar. To a certain extent, they combine the advantages of Street Motorcycles and get rid of their shortcomings. However, the popularity is extremely low. I think the main reasons are:
1) Most people use Street Motorcycles for daily travel. As long as they pay attention to charging the battery in time, the mileage is sufficient and they will not think of buying a range extender.
2) The price of Gas Motorcycles range extenders is very expensive, often over a thousand. It is also very suitable to buy a set of batteries with this money to make a dual-powered one. Moreover, the cost of using batteries is much lower than burning electricity. Why spend this money?
3) The Gas Motorcycles range extender is too heavy and has a large volume, which means that it is definitely not easy to carry it when running short distances. It can only be carried when running long distances. Where should it be placed? The seat bucket is definitely not possible, and the trunk is also impossible. You can only put the pedals, and the shorter pedals may not be able to fit. Even if you can put it down, you still have to stretch your feet, which greatly affects the comfort.