[huddy]

Zekeleys were notorious for flinging cylinder heads, as their mounting flanges were squared off and not chamfered, with insufficient material. This would cause a terrible imbalance and most likely an uncontrollable situation (the engine had a good chance of tearing off the fuselage). Thus, you will see Zekeleys with three stainless steel cables fastened between cylinders, each bolted to the head bolts, to keep the broken cylinder from departing. It also has external valves and rockers, with provision for manually lubricating them. My friend told me the MTBF was about 20 hrs. This might explain why nobody wants to fly the restored airplane...