The presence or absence of a reserve fuel tank on motorcycles can vary depending on the design and intended use of the motorcycle. Here are the reasons behind both scenarios:
Motorcycles with Reserve Fuel Tanks: Some motorcycles feature a reserve fuel tank in addition to the main fuel tank. The reserve tank is typically smaller and holds a certain amount of fuel, usually around 1-2 liters. The purpose of the reserve tank is to provide a warning to the rider that the main fuel level is low, giving them an opportunity to find a gas station or refuel before running out completely. When the main fuel tank is nearly empty, the rider can manually switch to the reserve fuel tank, which temporarily extends the riding range.
Motorcycles without Reserve Fuel Tanks: Many modern motorcycles, especially those with fuel injection systems, may not have a separate reserve tank. Instead, they rely on electronic fuel level indicators, low fuel warning lights, or fuel gauge readings to alert the rider when the fuel level is getting low. These motorcycles often have more accurate fuel sensors that provide real-time information about the remaining fuel quantity. In this case, the rider doesn't need to switch to a reserve tank since they have a clear indication of the fuel level and can refuel accordingly.
The presence or absence of a reserve fuel tank is a design choice made by manufacturers based on factors such as cost, technology, and the intended use of the motorcycle. It's important for riders to familiarize themselves with the fuel range of their motorcycle, whether it has a reserve tank or relies on other fuel indicators, to avoid running out of fuel unexpectedly.