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  • How to Build a Wankel Engine (and How It Works)

    I grew up with around Rotary Engines for most of my life... actually have most of a 12A wankle engine in pieces in my garage still... This is a pretty good tutorial on the engines as a while, but it worth noting a couple of things:1) These engines have an extremely high mechanical efficiency rating.2) This does not translate to a high fuel efficiency... actually the fuel efficiency is almost the same as a V8 piston engine.3) The major shortcoming of this type of engine is the Apex Seals (which weren't even mentioned in this instructable), but essentially they are either an iron or ceramic-fiber seal that is installed at the 3 points of the rotor that creates the air tight seal needed for combustion and compression. They were typically about 2-3mm thick. Once these seals were worn out ...see more »I grew up with around Rotary Engines for most of my life... actually have most of a 12A wankle engine in pieces in my garage still... This is a pretty good tutorial on the engines as a while, but it worth noting a couple of things:1) These engines have an extremely high mechanical efficiency rating.2) This does not translate to a high fuel efficiency... actually the fuel efficiency is almost the same as a V8 piston engine.3) The major shortcoming of this type of engine is the Apex Seals (which weren't even mentioned in this instructable), but essentially they are either an iron or ceramic-fiber seal that is installed at the 3 points of the rotor that creates the air tight seal needed for combustion and compression. They were typically about 2-3mm thick. Once these seals were worn out which was typically around 100k miles, it required a complete rebuild of the engine.4) Another interesting note is that these engines have a high oil consumption rate because of the lubrication required to keep the Apex seal lubricated.

    Totally should have proof read my comment before posting, lol. Sorry for the grammar... mind was thinking faster than my hands were typing.

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