Two stroke - cross head - hot bulb - model- engine.

I had never tried to build a two-stroke hot-bulb engine before only four-stroke engines, so I thought that the time had come, to try to build one .The engines I had build before was so called "open crankcase" engines, so this one should be open too, using a cross-head to guide the piston-pin. I was as you perhaps can see, very inspired by Swedish two-stroke engine builders like Beijers Kristala, when I should design and build the engine.

You might think that it would be much easier to build a two-stroke engine compered to a four-stroke  engine, but it is indeed more complicated, especeally when you build it as an open crankcase engine, using a cross-head.The cylinder is rather complicated to construct too, because of the build in, intake - cavenge - exhaust channels, witch musth be separated from each other, and from the cooling Water channels.

The Photos show, my well-proved fly-ball governor controlled injection-pump system, used on my four-stroke engines . It seem yo Work well on this engine too, I just had to make an injection-pump cam with two cams, because the site-shaft only turn half the crankshaft speed. 

                          Site-shaft parts

Assemble Photos

The Photos show at the top from left to right, the cylinder and the cross-head guide. From left to right in the middle of Photos, is the piston, the piston-rood, the cross-head, the connecting-rood and the crankshaft big end bearing, and under this Again (left Photo) the intake walve.

     The parts assembled (left Photo), ready to be mounted on the engine base ( right Photo)

                             Engine oilers