Microsoft Flight Simulator | Cessna 208 | Improvement Mod! 

Caravan Cowboys!!!

you may wanna tone it down on the power though. I never use full throttle for any portion of the flight. it WILL over torque your engine and, in real world, destroy it.

That would never happen with any of the MartinAire 208’s they are dead dog tired! I mean it would not torque out it would temp out first! 🤣🛫

@@4OfSpades So is full throttle a purely emergency setting then? Why wouldn't there be some warning or limiter that prevents you from using full power unless you're in an emergency

​@@OhKnow379 Hey man! Awesome question! So the PW PT6 is a completely Mechanical engine, it's not controlled by FADEC like some of todays modern-day jets or even some other modern prop planes. This is going to be a long one but, max takeoff power/thrust is completely based off of air density / temp. Where FADEC would control/monitor the engine temp/torques, the PT6 doesn't do that. The monitor is the pilot. Essentially, a physical limiter on the throttle wouldn't work because you may takeoff from an airport where the temp/density "limits" the engines torque to say 90%, however, 4 hours later, at the next airport you takeoff from, temp/density may limit your torque to 92% or 94%. It's always changing. So, a physical throttle stop wouldn't work. When determining your max takeoff thrust, it says not to exceed max torque or temp (whichever hits first), so you are bringing your throttle lever up slowly until either max allowed temp (ex 500deg) or max torque (ex 92%) is reached. Not only that, but the physical travel range of your throttle lever may not equal the same torque value depending on the air density. On a very low density day, I could bring my throttle lever to, for example, 80% of the travel range, resulting in a torque value of 85%. But the next day has a higher air density and, therefore, 80% travel of the throttle lever brings your engines torque to 85%, for example. FADEC on the other hand, digitally controls your engine, therefore your max power (different to thrust) is always going to be the end of the power levers travel. This is because FADEC will control your engine in order to never exceed that max torque or temp as it knows all the conditions it's currently flying in. YES, with the PT6 you can obviously push the throttle past your max allowed, and the POH covers the abnormal procedures in which you may need to do so. This, however, does mean you are exceeding the limits of the engine's normal operating range and risk wearing or damaging your engine faster.

@@4OfSpades Hey man thanks so much for an explanation, you're an absolute legend. It's either interesting that Cessna kept it mechanical but nonetheless very interesting. Have a good one!

Thanks for that info. Should the RPM lever be at max for takeoff or can you back it off somewhat before takeoff ? Should the RPM lever be at max for all landings or can you leave it backed off ? Thanks

​@@kenbonner2316 I am no actual pilot so my knowledge is based off the lessons I took in ground school and information found throughout the Internet. When it comes to the prop lever standard operating procedure is max (full forward) during take off. This allows the prop to have maximum bite of the air for maximum performance. Same with landing as it gives you maximum bite from the prop in the event of a go-around. Depending on pilots some would reduce RPM during cruise climb and some would leave it at full RPM for maximum climb performance. Think of a car using low gears when climbing an incline and high gears when cruising the highway. Based off the 208's POH you can set the propeller between 1600-1900 RPM during enroute climb. However, what I normally do when sim'ing is just leave it at max RPM for maximum performance and reduce it when levelling off for cruise. I forgot where I picked up this piece of information but the main purpose of reducing prop angle/RPM is to reduce cabin noise (that's it) so it's more comfortable for the occupants especially during cruise; I may be wrong though.

@@dinoe820 you are correct.

@@dinoe820 Hi Dino! "Maximum bite" term is used when the prop angle of attack is larger, thus with "lower" RPM setting and not with high or max RPM ;). Max RPM is very tiny bites of air very quickly. Also, the primary function of RPM reduction is not to improve cabin noise, but rather reduce/optimize engine stress and fuel consumption in cruise, for an intended true airspeed at a given pressure altitude and outside air temp. i.e. The pilot plans his cruise portion in advance in accordance to the performance tables in POH, sets the torque and rpm as planned during cruise, and expects to get a particular EET/ETE (TAS) and endurance (FF) while saving on required engine maintenance (stress). You are correct though as per POH that max RPM in all conditions is 1900 RPM. The absolute max torque (at sea level) may only be set for max 30 seconds, however recommended procedure for take-off is to forward torque slowely until a max 1900 RPM is reached. At sea level in standard conditions this may mean that the physical position of the throttle lever is around 70%. At higher altitudes this may be 100% (and without even reaching max torque at some point) due to lower air density. But you'll almost never require max torque at altitude anyways unless perhaps its an emergency.

So should we use low idle for taxi and then switch to high idle prior to takeoff?

​@@kenbonner2316 low idle is used as pilot discretion, if the taxi is gonna be long sometimes the pilot uses low idle to conserve fuel, but if the ITT is the concern, the pilot prefers high idle to keep the engine below idle ITT. cmiiw

I think the engine is a bigger engine than in older 208’s like the Black Hawk update. Older engines are 1900 TQ take off this is like 2300

I know the POH cruise settings are 1900 TQ max cruise the fuel savings Cruise is 1600 TQ with prop at 1750 RPM

Well, fancy seeing you here Jenny.

@@shinkicker404 Small world, eh? Hehehe...

That is odd, because in the Kodiak I can use the condition lever with my controls, and I haven't changed any control binds. So I guess the devs linked it to the mixture somehow.

If you have both the stock 1000 and the NXi installed, you may need to "uninstall" the 1000 to get that fixed. Worked for me.

@@gpbarth ― I didn't know you have to uninstall the default. Haven't seen or read it anyware.

@@gpbarth ― don't see anywhere that you could uninstall it (in Content Manager)

They modeled it after MartinAire’s auto pilots, they would attempt to kill you when engaged.🤣🛫

I unfortunately, never turn the pilot avatars on.

Have you updated to the latest Nvidia drivers? They're causing a lot of crashes for people

@@RootBeerTuna Tank you for this info, but I did, I resolved mostly the CTD by limited the fps at 30 max. Still have not ebale to get the LIVE WEATHER fonction and no sound CTA. The set up menu keep in shadow light.