The EMD SD45 was manufactured starting in 1965 so that it represents one of the newest prototypes available in Large Scale. SD45`s are still running all over the country, but they are getting fewer over time due to very high miles in the last 30 to 35 years. The SD-45 was the first locomotive that used an engine with more than 16 cylinders. The 64
Click here to download the full size of the above Circuit.
5 model engine in the SD45 carried 20 cylinders. The "645" in the model number indicated the displacement in inches of the engine PER cylinder. This 2 stroke engine developed 3600 horsepower, the largest on rails at the time it was manufactured. The heat generated by the engine was so great that extra radiator area was needed. The wider radiator resulted in the flares on the rear of the long hood. Cooling air was taken in through the side vents and exhausted out the top. This technique was borrowed by other builders later to accommodate larger radiators. There are two major variants of the SD45, the SD45-2 and the SD45T-2. The variants had all new electricals and controls. Both rode on an extended frame and lacked the sloped air intakes. The radiator was extended in a longer hood. The SD45-2 had its air intakes along the top of the hood. The SD45T-2 (tunnel motor) took in air through vents on the sides set down near the walkways. There was nothing inside the hoods in this location and you could look right through the loco and out the other side. This arrangement was developed by the Southern Pacific so that the engines could draw in somewhat cooler air in tunnels. The last unit of a MU consist would often suck in superheated air in a long tunnel because of the blast of engine exhaust from the lead units. It could then overheat and shutdown with disturbing results, such as a stalled train in a tunnel. The "tunnel motors"...
This project fits more for custom made battery casing that can have more space to hide things inside. This switch with few alterations can be used for any other project as well but is designed based on e-bike needs! This project use a clever functionality of....
The circuit described here uses ultrasonic oscillations and operates based on the propagation velocity of these oscillations in the air. Thus, we can easily determine the distance of two points if the time within which the wave travels this distance is....
Sometimes the precious metals are hidden too deep and are not detected except with complicated devices. In many cases, however, small pieces of precious metal buried near the surface can be detected by relatively simple means. Everyone is very attractive to....
Many times for various reasons we forget or can not water the plants that we have in our homes. And many humidity sensors units just notify us with a beeping sound or with a flashing light, that the pot needs watering. But what if we are away from home? This....
The principle behind a metal detector is really very simple. Proof of this is the circuit that follows, in which it proves that the construction of a metal detector can be done in the minute, with few components that we find very easily everywhere. With the....
The sub-harmonic bass generator is a sound producing unit for guitars. The sound it produces looks very much like that of the bass guitar. The octave generator is sometimes quite unusual since it does not produce any of the usual ways of coloring the sound,....
In the past the sounding (sea bottom measurement) was done with the "bullet", that is, with a heavy lead object that the seamen plucked into the sea hung from a calibrated rope. As soon as the "bullet" reached the bottom, the depth appeared directly from the....
This Amplifier was designed to have the following specifications: Distortion less than 0.1% at full power of 100W even at 20KHz. Power has to be attributed to an extended bandwidth. The output transistors must be protected against short circuits. The power....
A series of LEDs serve to alert the gardener when plants need water. Using two conventional digital integrated LEDs and a series of LEDs, we make a very useful device for gardening. The device detects the amount of water in the pot and alerts the grower.....
characters left: