I have an issue where my planes do not have enough power to barely takeoff. The throttle is at 100%, I’ve got automixture on (to rule out that problem). As an example. At 100% throttle the Cessna 172 is only producing 1600 RPM. I can barely lift off and even with no flaps the plane stalls. This is true whether I use an input device , use the mouse to open throttle in the cockpit view or use the F2/F3 keys to set power . When I first jump in the cockpit the engine dies unless I very quickly increase throttle. Many times I’m not quick enough.
I haven’t checked all the planes but the few I have checked have the same problem.
As best as I can recall, this problem did not exist initially. I’ve removed my throttle input device and reset all control settings in MSFS2020 to their default value. Nothing I do solves the problem.
Scariest of all is I haven’t seen anyone else mention this so if I’m the only one with this very weird problem I’m up the creek without a paddle.
So right now I can not fly MSFS 2020 . This one is a show stopper.
Was having this problem initially with my Honeycomb yoke but that was because the keys for the magnetos were tied to the yoke and were not on both. Make sure the switches on the yoke correlate with the sim.
Are you factoring in density altitude? For example are you trying to depart an airport thats 8,000 feet MSL on a very hot day?
Sounds like an auto-mixture problem. Have you tried manually increasing the mixture to rich?
And in regards to the density altitude, are you doing an engine run up, and finding the mixture setting that gives you the highest RPM (if you are departing a higher altitude airport)
What @PZL104 Said. Automixture might be putting it too rich. If you’re at sea level, 75% is your best bet. If you’re at 5000+, try 50-60%. Its unrealistic, but the sim seems to prefer max fuel flow, which for whatever reason doesn’t happen on 100% rich…
Hi @CajunRon50,
Had that happen in the classic 172 at VTUJ (500ft) this afternoon. Nothing I did could get the power over 1800 rpm. Fixed it by restarting the SIM.
You might consider sending the issue to Zendesk
It appears to be a mixture calculation bug. It’s only a problem with prop planes. I was at sea level and the temperature was 15C. At fulll open throttle I should be able to red line the tachometer while on the ground or at least come close. Even at 75% mixture setting I can only get 1900 rpm. That’s not even in the green (the recommended tach speed) The Cessna 172 has a best rate of climb of 75 knots, I can hardly climb at 50 knots with wide open throttle Definitely a bug.
I have the same problem, during training lesson - traffic patterns, throttle set to full, but rpm of engine run barely at 2000rpm’s. I’m unable to reach desired altitude.
I have been having same issue with Boeing 747-8. No matter if 1/4 or 1/5 or full on fuel, she is taking the entire runway to get off the ground at KDCA, basically skimming the water after running out of pavement/
Check if you mapped your throttle to throttle 1. If you are on a multi engine plane, you will only be powering ONE ENGINE to throttle up. It needs to be the throttle axis, not the throttle 1 axis. I found out the hard way too, and couldnt fly any of the twins.
You may be on to something. I do have a Honeycomb yoke but didn’t install any drivers for MSFS2020 so I assumed none of the buttons/switches were mapped and didn’t pay any attention to their position. But yesterday when checking to see if I had the most up-to-date drivers for P3D I learned that MSFS2020 does not need drivers for the Honeycomb yoke, it’s built in. Unfortunately I got so frustrated I requested and received a refund from the Microsoft Store so I can’t try it out. I’m debating whether to repurchase now based on your suggested solution or wait until more of the bugs are worked out. I’m leaning towards waiting, though I have a great desire to get this thing to work.
Can anyone else with a Honeycomb yoke confirm this?
Does anyone have problems with the power of the C152 for the training session.
I don’t seem to have any climb power even at 2300 rpm with all the mixture tuned (and default)
This bird has no power through any of the sessions. For the circuit its even worse.
Who else has that issue. I would think that should have been a fix if this was a bug as most new simmers will start from here and we don’t want to turn them off.
Same problem here to with the 172. I have to climb at 200 fpm to get 7000 ft out of it at 65 knots. Leaning all the way up doensn’t help. If I keep climbing the aircraft will slowly bleed off speed and stall. This has to be a bug with MSFS 2020.
I think the cause of the problem is an issue in the live weather atmosphere model or it’s data. Look at the outside temperature gauge there is about plus 285 `C at this time. If you switch to predefined weather everything is going to be good. Sometimes it hapens during flight at higher flight levels above 24.000ft. Nor jets can fly at these conditions.