Twin ball race designed by V. Petukov, in 1956.
|Fuel:||ether / petroleum / oil|
|weight & Dimensions|
|U.S.S R. (C.C.C.P.)|
I acquired this engine in used condition from an Ebay seller in Russia, which was a totally satisfying experience. I found that this engine was prone to flooding while being started and I had a couple of finger smashing experiences before I developed my new starting technique. Now I start it with a exhaust prime with the needle valve fully closed, then open the needle valve about one turn with the engine running and make final adjustments. Once flooded it is very difficult to clear the surplus fuel from the crankcase. This engine, when flooded will bounce back and forth on the compression stroke for which seems like a very long time, firing under compression and burning off fuel at the same time. You can see a little bit of this at the beginning of the video clip.