I recently bought a new in the box Suevia type 252 at a swap meet. I am somewhat of a collector and have never heard of this engine, so I just had to have it. At a cheap price I might add. The instructions, etc. are still in the box. Stamped on the box is: Model Rectifier Corp. as the distributor. I don't know when they were sold, but if anyone knows please let me know. The instructions call for a 14 x 7.5 prop. For an engine of that size, 25 cc (1.5 cu in) that is a very small prop. That leads me to believe that the engine down on power. Other specs. are: Bore 34 mm, stroke 27 mm, weight 1100 g, power approx. 3 HP at 11,000 rpm. Schnurle scavenging porting. For fuel it says, "use normal fuel (even without Nitro). It doesn't mention oil content. One comment of interest in the instructions. " Symmetric motor construction, which means constant speed in both directions". Interesting. A "hot" glow plug is recommended.

Richard