A used USAT F3A found it`s way into my possession today. I wasn`t planning on this, it just sort of happened. However, now I have another loco for the GIRR. The road number of the model is 26C. By the ATSF numbering scheme used at the time, this would be the trailing cab unit of an AA, ABA or ABBA set. The lead loco would be designated 26L. After
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ATSF stopped running them in matched sets, each loco would receive a unique number. Some of the locos in this class were eventually rebuilt as CF-7`s. This particular model is similar to the USA Trains GP-7/9 that I purchased in 1998 but it is of somewhat newer construction. I do not know the date of manufacture, but the switch board is dated 12 Aug 1999. This one has a bank of 5 slide switches underneath as opposed to the 4 switch configuration of my GP-9. However, other than some wiring issues, it appears to be pretty much the same. The model is well detailed and heavily built. It still has wheels with traction tires and sliders. Since my investment in this loco is really small right now, I`m not going to go far out of pocket to upgrade it so the existing wheels and sliders will stay on this one. The wheels are somewhat worn indicating that this one has some miles on it. However, they are not seriously pitted now and I intend to keep them that way. My GP-9 had serious wheel problems due to a combination of conditions that I now know how to mitigate. My layout has a really beefy DCC booster which can provide very high peak currents, in excess of 20 amps. The decoder I used in the GP-9 is also a very high current decoder to match the high current motors, which the F3A still has. The combination of high available current, motors with nearly zero stall impedance and no current limiting results in burned up wheels. I`ll not...
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.....
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