Engine Punk

The cutaway gives any idea of how few moving parts the GKW engine had. It had 3 coils through Following VT 10 about the Mercedes-Wartburg, I tried to find some more information about the DKW engine that was the basis of the Wartburg motor. The Deek also sired the early Saab and Auto-Union two-strokes. There's still quite a following for these little cars. Wartburg's and Trabants have a kind of retro-Commie Cool but I couldn't find the technical info I was after. However, in the course of my latest investigations into Trojan engines, I found a slim volume in the Anarchadia Publishing research library, entitled The Two-Stroke Engine (bit of a give away, that) by K G Draper, published by Foulis. Not only did it have a schematic diagram of the Trojan engine but also a cut away of the little Deek - DKW stands for Das Kleine Wunder, the little wonder. You can clearly see the seven moving parts - 3 pistons, 3 conrods and a crankshaft. This elegant design was first ...

Cut away engines seem wrong to me but are pretty well essential in understanding the workings of the normally aspirated Trojan split-single two-stroke. This the view from above. A mate of mine sent me this illustration of a cut away Trojan engine the other day. This was in response to my earlier post (VT 4) about a supercharged Trojan engine. Well, I still know nothing about the blown sort but here's a pic of the common or garden variety. Although it looks like a twin, the Trojan was a split-single. Yeah, I know, it's a contradiction in terms. Think of it as a saimese twin then. And they weren't split-singles, either. They were four cylinder split twins! Still with me? Some people call split-singles twingles so what would the quad-twin Trojan be - a quin? But why bother with split singles, or twingles, in the first place? The big problem with two strokes is spent exhaust gases mingling with a fresh incoming charge of fuel into the cylinder. Two strokes don...