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"George R. Patterson III" wrote: > Dave Jones wrote: > > > > > I am helping a friend set up a fuel station. He has one pump with JetA > > > and a second one that has both Auto Gas and 100LL. Almost everyone grabs > > > the AutoGas nozzle and tries to fuel their plane. The credit card > > > computer turns on the 100LL pump but most grab the wrong hose and it > > > wont pump. What would happen if the customer accidently pressed AutoGas > > > on the computer and put Autogas in their Cessna? > > In many Cessnas, autogas will perform at least as well as 100LL. In many > other aircraft, it will not. My aircraft has an O-320-B2D engine rated > for 160 horsepower. Auto gas would cause knocking which could seriously > damage the engine. Had I opted for the O-360 (rated at 180 horses), auto > gas wouldnt do this. Many other aircraft would require fuel system mods > (replacing the fuel pump seems to be the most commonly required change) > before auto gas could safely be used. I assume you mean the Lycoming O-360? That engine (at 180 hp say) has too much compression to use autogas. You need an STC for an engine originally certified to run on a specified grade of aviation fuel before you can pour autogas into it in the United States. The STC takes into account the entire fuel system, and some engines may be able to use autogas in one plane, but no in another. Vapor lock possibilities is a big issue here. Good luck finding an STC to run autogas on the Lycoming O-360 series at that compression. |
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