Part 9 M5SS radial (star) engine

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This is part 9 of the workshop - the cylinders are getting more complex. Today we'll cover the simple version of the five-cylinder radial engine, which could potentially be clipped again or screwed into place with an additional drive wheel for easier handling. There's also a "luxury version" that features ball bearings on the connecting rod and a connecting rod star. As you might recall from our previous workshops, we need to achieve different heights for the guide webs of the cylinders. Fortunately, thanks to the flat design of our connecting rods, we can use the same two variants as with our boxer engine. However, in the luxury version, all five cylinders will be at the same height. We'll be using the same cylinders as before (2+3), along with identical cylinder covers, pistons, and connecting rods. The crankshaft remains largely unchanged, although its base will now accommodate five cylinder guides spaced 72 degrees apart - similar to our V-engine design. This configuration has a significant advantage: it allows us to use the same base for both screw and bearing variants without any modifications. To complete this build, you'll need socket head cap screws (M3 x 10 with nut) and a matching screw with washer (M2 x 6) for the connecting rod. If you choose to add ball bearings, make sure to install them according to specifications - specifically, the 6 x 3 x 2.5 mm bearing. Don't forget to use spacer rings or conical rings as needed to ensure proper fitment and alignment. With your experience in engine building, assembling this radial engine should be relatively straightforward, taking around 15 minutes to complete.