Very little engine power

[markdon]

I'm finding that I can't get the F406 to go any faster than about 20 knots in MSFS 2024. When the plane loads I remove the chocks and covers, get the engines and systems started and taxi out. When starting the take off roll though, I advance the throttles to takeoff power and the plane will only do about 20 knots. The engine instruments register the correct power setting but no acceleration.

This is a problem in MSFS 2024 only. Everything works fine in MSFS 2020.

Am I missing something here?

Thanks.

[Boazera]

I have exactly the same problem. At first I thought I hadn't removed the wheel chocks. So I restarted the flight. But the F406 does not accelerate. I am really disappointed and hope for a solution soon. Thanks

[Eddie]

Hello,

Very sorry to hear you're experiencing issues! Can't say we've seen/heard about this. Works as intended on our end; would you mind grabbing a quick video showing this in action? Would be very much appreciated and make it a lot easier to diagnose what could be going wrong here. 

Thank you 🙂

[KeplerVerge]

I have had this issue as well, during the take off roll the plane isnt producing power to accelerate. I did notice that the autofeather lights we flickering, then solid, then only one was blinking. Maybe its related to the autofeather switch being in arm? It sounded lick and the instruments would show in increase in ITT and N2 but then the Torque would drop sharply as the props would feather. They were not responding to the Prop Pitch levers. 

[Boazera]

5 hours ago, Eddie said:

Hello,

Very sorry to hear you're experiencing issues! Can't say we've seen/heard about this. Works as intended on our end; would you mind grabbing a quick video showing this in action? Would be very much appreciated and make it a lot easier to diagnose what could be going wrong here. 

Thank you 🙂

Sorry, I have no possibility to record a video. Nvidia and Game Bar are deactivated for me.

[Eddie]

Is this happening to every variant of the aircraft? 

I have tried reproducing this on the cargo variant so far and to no avail. 

[Boazera]

So far I've only used the Passanger variant. I haven't tested the others yet.

[markdon]

I've only tested the coast guard variant so far.

[henkhugo]

I cannot replicate this at will but I did have the RPM drop away in the cruise on my first flight, disarmed the auto feather and the RPM went back to where it was set for the cruise. 

[Eddie]

We'll continue to look into it and hopefully be able to get you an answer as to why this is happening. I am starting to lean towards it being some kind of binding issue but not ready to confirm that just yet. Your patience is very much appreciated and I understand this is frustrating issue to be having. 

[henkhugo]

18 hours ago, Eddie said:

We'll continue to look into it and hopefully be able to get you an answer as to why this is happening. I am starting to lean towards it being some kind of binding issue but not ready to confirm that just yet. Your patience is very much appreciated and I understand this is frustrating issue to be having. 

Shout if you need me to test anything 

[KKoeF18]

Hi I'm having the same issue even before the recent update.  I've looked into many of the bindings and can't find anything that's conflicting.  On the runway and engine run-up, the engine parameters look normal, it's like there is a brake being applied only at high-power settings.  Can't achieve much more than 20 knots or so.  If I load the aircraft on the runway, engines already running, then the problem does not exist, and I can take off normally.  But if I load the aircraft cold and dark, the problem persists on takeoff.  Hopefully this data point helps with your troubleshooting.  Looking forward to having this addressed, other than that brilliant airplane!  BTW this is with Cargo variant, I’ll update if I can replicate the problem in the other variants.

Edited July 20 by KKoeF18

[Binky]

I’m having the same issue. I’m on Steam SU3 beta using cargo variant. Tried starting cold and dark and auto start. Checked all key bindings and peripherals so far to no avail. At current time plane unusable until such time as a solution can be found and implemented. Disappointed 

[IniSteve]

Hi all. We are not seeing this on our end in either pax/cargo variants. 
In fact we find the engines are powerful enough to accelerate to takeoff speed with mid-range torque values. 
Pax- 

 

Cargo

Can you all confirm props are set to full RPM and the parking brake is indeed off prior to setting full power?  

 

[KKoeF18]

All, quick update on this.  I do believe it's a peripheral / key binding issue.  I was not able to find the conflict on my main simming setup (yet), but I'm unable to replicate the issue on my gaming laptop which has very minimal peripherals and the Caravan II has no power loss/braking issues on takeoff.  Recommend looking very closely to see if those experiencing this problem can finding any conflicts with propeller pitch controls, feathering, beta/reverse thrust and braking.

Thank you IniSteve for your follow-ups, this is a very cool aircraft!

[markdon]

Hi all, I've found a work around. I accidentally discovered that if I disconnect my Bravo throttle quadrant and then connect it again the problem disappears. You have to do this each time the plane loads.

I don't understand what is going on here, but one of you guys might.

Because this was the first time I've been able to fly the F406 in MSFS 2024 I found another bug. The autopilot mode controls on the bravo don't light up. Small problem I know but they work fine in MSFS 2020.

Hope this gives someone a clue as to what's going on.

.

[Stephen Jackson]

Yes, I also have this issue, and its a huge let down because the plane, in VR, is absolutely outstanding and an awesome experience. The no power issue appears in all variants, and I have found it occurs, in my situation at least, after I have landed at another airport after taking off, shutdown, ( opened the side window for superb ambient sound immersion), and just sat in the plane for a while. Starting up again, taxiing to the runway, full power, (gauges confirm), but, damnit, no power, no airspeed, and abort.

As I said, the first takeoff is fine, but subsequent ones are not: no power to get airborne. I find I have to end the flight, fly something else for a while, then start a new flight with the caravan. What a hassle, and at the moment is ruining a truly remarkable module. I know Inibuilds will fix it, but until then I will try the workaround I just noticed while I was typing this: the throttle disconnection...hope it works. Thanks Inibuilds for this a fantastic plane, but please have a look at this as soon as you can?

 

[Eddie]

We are continuing to look into this, but unfortunately as Steve mentioned above, we are still unable to reproduce this.

We'll drop a message here again if we manage to find the culprit. Thank you for your understanding and continued support 🙂