Simviation Forums

by **SeanTK** » Thu Oct 15, 2009 12:36 pm

Cowl flaps: In my experience....

Fully open = on the ground, climbing, final approach.

Varying degrees of closure/fully closed = cruise flight, descent until lined up on final.

Mixture: you can fiddle with the CHT needles to accomplish a specific temperature goal, or just lean it until the engine roughens/slows then bump it up a tad.
Didn't read through to see if it is mentioned, but it is a good idea to lean the mixture when taxiing/operating on ground at low power settings so you don't allow an excessive carbon buildup to foul the plugs.(Keeping the rpms at at least 1000 also contributes to this practice) Just remember to go full rich for takeoff, keep it full until around 3000 ft (unless your field is at high altitude), and then full rich when landing.

by **Brett_Henderson** » Thu Oct 15, 2009 12:44 pm

Mixture: you can fiddle with the CHT needles to accomplish a specific temperature

I think you mean EGT. CHT lags far too much for mixture reference.

by **SeanTK** » Thu Oct 15, 2009 1:01 pm

Yeah.

The brain wasn't fully functional when I wrote that.

"Let's see...a three letter acronym that is near the engine gauges.....this one sounds good."

by **olderndirt** » Thu Oct 15, 2009 7:59 pm

Very good thread.

by **Augr** » Sun Oct 18, 2009 2:55 pm

Most FSX aircraft that have cowl flaps don't actually do anything with them. Sure, there's a knob, but it doesn't do anything. Brett's C310 is one of the one's that does model them. If you leave them closed on the ground it gets downright hot under the cowlings.

by **DenisH** » Mon Nov 23, 2009 7:29 pm

I'm constantly reminded that my engine (s) are losing power because of mixture. My Q is: How does one know when the mix is lean enough? I've noticed that if you press "Cntrl-D" the mixture control slides all the way to lean regardless of the altitude. (I think it's contrl D but I forget at the moment what buttons you click).