He says-
"It was built by a chap in the Ukraine. He stretched a Jawa 280 mm and then added a Czeck built 6 hp diesel (an engine name not recognizable to me) of 375 cc's. The engine was coupled to Dnepr MT-10 clutch/trans/rear wheel by way of a flywheel he machined himself. If my translation is correct, the engine develops full torque at 1500 rpm's. All this at the cost of approximately $500. And reportedly capable of 90 km./h."
Go here to see all the pictures:
http://tinyurl.com/2qmpdz