Clutch The KTM 250 EXC-F employs the KTM-developed DDS clutch (damped diaphragm steel) with a wear-free steel basket and extremely heat resistant clutch plates and new, nitrated steel liners. This clever design employs a diaphragm spring instead of the usual coil springs, making for considerably easier clutch action.
The difference between active and passive solar water heating systems is that active systems have circulating pumps and controls, while passive systems do not. Although passive systems are usually not as expensive as active systems and can last longer, they are generally less eficient.
5. Solar water heater. For a fraction of the cost of a complete solar-power system, you can install a solar-powered water heater system to generate hot water for your home. They can be used in any climate, and the fuel they useâsunshineâis free. These systems include storage tanks and solar collectors.