Check the listing for details. Webster 4 stroke model engine Hit & Miss Build Yourself CD-ROM pdf. Condition: Brand New. Listed at 12.50 USD. Here is an entry level, beginner model engine that you can build with a small lathe and drill press. Of course, if you have more machinery, such as a small vertical mill it could be easier, but this engine does not require it. Neither does it require to buy or make castings! It is a scratch build, minimal purchased components and you wind up with a running model engine. There are about 20 pages of drawings and then some text. It is an easy to follow set of plans and if you are aspiring to build your own model engines, this is a great selection? Get this one under your belt and then move on to more sophisticated engines like the Wall 1 hp single air cooled or if you really feel ambitious, try a Wall 4 cylinder!In our store we also are offering the book "model gasoline engines" on CD-ROM, (pdf) and, other model engine drawings sets, The MORTON M-5 drawings on CD-ROM and other model engine / hit & miss related items! We also have repair manuals for lots of small commercially built engines. If your interests run along history of model engines these items are definitely for you.