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The original Quadra 35cc engine did utilize two piston rings. I don't know about the US Engines 35cc versions. One of the old hop up tricks for the Q35 was to remove one of the piston rings and replace the remaining ring with a special ring, different from the original Quadra part.

Having made in USA on the block is a good indication that it is a US Engines product. Some of these engines were very good powerplants. The ones made after the factory moved were hit or miss on quality.

The wires leading back to the fuselage from the ignition system were probably connected to a C&H (IIRC) "Jump Start". It made starting much easier by providing enough power to generate a spark at low, hand starting rpm. After the engine was started and running, the switch to the Jump Start was turned off and the engine ran on its own generated electrical power. It made hand starting some of the old magneto engines much, much easier.


Ed Cregger