Simviation Forums

Hi there. Can anyone advise me of the best way to tweak piston engine performance on the cfg file apart from turbocharging please.  Thank you

Are you looking for more top-end or better acceleration?

Are you looking for more top-end or better acceleration?

I am looking to stop falling off of performance as altitude incresases. Cannot maintain stated climb rate.

Are you looking for more top-end or better acceleration?

I am looking to stop falling off of performance as altitude incresases. Cannot maintain stated climb rate.

Once over 5,000 feet ASL, start weakening the Mixture to obtain an optimum Air to Fuel ratio.

Gradually weaken the Mixture until the engine starts to falter and run rough, and then richen the Mixture slightly until the engine runs smooth again.

Have a look at the Gauges....Fuel flow, Engine Exhaust Temperature, Cylinder Head Temperature, engine revs, etc to maintain optimum settings.

There are a very comprehensive set of gauges in the Beech Baron 58.

Try it in the Beech Baron 58, where you also get the opportunity to experiment with the Propeller Controls (coarse/fine pitch) as well..!

F.... 8-)...!

That is what happens in real life in a normally aspirated engine. Im not sure if you are doing this but you need to lean out the mixture for optimum fuel flow as altitude increases. If you are flying a turbocharged airplane, as long as you continue leaning the mixture, the engine will produce sea level power all the way up to the engines critical altitude. If you are flying a normally aspirated aircraft, ensure you are leaning the mixture properly, and if you are than i really cant help you. If you are flying a turbo-charged aircraft, which it does not sound to me like you are, ensure you are leaning properly, and check the books to make sure that you are not exceeding the engines critical altitude, or the altitude at which the turbo will no longer produce sea level power.

Joe