When I kicked off the machining of my Wallaby project a month or so ago, I decided to divide the project into four stages. My first was machining the large components and this is now complete with the exception of some cleanup work.
Here is the original CAD design:
And the final result:
Timing Gear side
Flywheel side
The engine looks bigger than it really is, it is only 3 1/8″ long!
Next I am going to tackle the power train, not sure if this is proper nomenclature, but I have grouped the project into the 1. major components, 2. the power train, 3. the valve train and 4. the timing train. The power train consists of the crankshaft, middle crankshaft bearing, con rods, pistons, rings and cylinder sleeves. So I will be looking at the crankshaft next. But before I start making chips I need to spend some time working on the 3D CAD model and making a set of prints that reflect the actual dimensions of the parts fabricated. For example, I will measure the distance between the two main crankshaft bearings and match the crankshaft length to this. Another example is the actual center to center distance of the crankshaft and camshaft.
OK, back to the computer………