Am I to understand that these are two stroke? It doesn't seem to me that there's enough lube in diesel to keep the crank wet? Either way as a maintenance engineer myself, I'm amazed at the size and precision. You would need a crane to put oil in it.
Ok, I got a question, here it is : wonder who gave them guys the technology to build something like this? It ain't no Honda ,and,is a long way from a transistor radio.


Thanks for the pics very interesting, enjoyed the post.