How to Choose Screws for Electronics

The efficiency of the outboard motor is largely determined by the selection of the right propeller screw. It depends on economy, speed and acceleration of the whole system. How to choose the correct tiny screws for electronics?

Use the easiest way to matching screws. If possible, compare the quality of work of two or three screws with different pitch, alternately setting them on the same engine. Determine which screw is effectively under heavy load vessel (usually a screw with a smaller step), and which provide a high speed of movement with minimal load boats or boats.

Spend a few experiments, making fuel economy measurements at different load boats. Determine for each screw optimum speed to planning and maximum speed that can develop the ship. In this case the motor should run about 5,000 revolutions per minute at full throttle.

When testing the operation of the screw note how much boiling water from the engine. If at the beginning of the movement motor emits a sound like a car and the motion control levers responds abruptly and dramatically, you must set screw with a big step. Choosing a screw for a boat, consider the terms of the proposed vessel operation, including load capacity. If you plan to travel light, the screw is designed for a maximum load will make the extra momentum.

Note the number of blades of the screw. Most have a maximum speed of the screws with three blades, but they are slower output ship to plane. The four-screws, on the contrary, can easily pass into the planning mode, three-blade but inferior in speed. BTW, you can buy the small screws for electronics at Banggood for high quality and reasonable prices.