alialkayyali

So just as an overview, it is my first time building a model turbojet, and I am basing it off the model in Thomas Kamp’s Model Jet Engine Texbook. In the textbook there are some bits that are unexplained. Firstly, in the engine; there are spacer discs on each end of the shaft - what are they used for and where shoul they be placed? Secondly, the book says to use a preload spring only on the rear bearing. Shouldn’t that also apply for the front bearing?