Any advice when it comes to Power On Stalls in a c172n with an STC for a 180hp engine. I very rarely get a full stall.
Posted by ActuaryExpert1446@reddit | flying | View on Reddit | 22 comments
mirassou3416@reddit
I have a TR182 and mine just mushes
hayesjaj@reddit
my tr was the same. lightly loaded i could fly it at 35kts.
kevinpet@reddit
How long do you wait between full power and pitching up? Do you see any increase in airspeed before it starts declining?
eSUP80@reddit
Key is to start at rotation speed- 55-60 knots in a 172. Then power on. Pitch up aggressively 25 degrees or more. Right rudder, Stall quickly, recover
blindpylote@reddit
No airplane will go up forever. If you can’t get it to stall, increase your pitch attitude. It willl stall eventually. I have a penn Yenn aero STC 180HP 172N and it stalls just fine. You just have to encourage it.
Cessnateur@reddit
Man, that's such a nice airplane. I flew the exact same thing for years in a club in Michigan before they eventually sold it. I remember it being like 80% the performance of a 182 with none of the additional weight, cost, or complexity.
blindpylote@reddit
For real! It gets hot, though. I never get the maximum climb performance I want out of it because I’m too busy trying to keep it cool.
Cessnateur@reddit
I can relate. After installing my 80/42 prop, I have to step climb in the summer to keep the CHTs under 400. So glad I've got a good engine monitor!
No-Afternoon-8299@reddit
Don’t use full power. Could also try banking during the power on. We have a DPE that requires you to bank during power on stalls.
chicagoderp@reddit
You don't have to use full power. PA.VII.C.S4 Set power (as assigned by the evaluator) to no less than 65 percent power. That should help considerably.
ActuaryExpert1446@reddit (OP)
Yessir I have utilized this as well. I’ll keep trying. Maybe I’m still using too much power. VS0 is 40 so I’ve been slowing down typically to 45 before inducing the stall as well
baritone_mike@reddit
Slow to 60 knots, add full power and pitch/hold 25 degrees up. It will stall
MeatServo1@reddit
To what end are you slowing to 60, then going full power to complete a power on stall in the training or checking environment. 70% is more than enough to teach the mechanics and demonstrate proficiency to check airman or DPE. The point is to induce the stall or approach to stall, not hang on the prop.
OzrielArelius@reddit
it made sense to me cause you typically take off with full power
kristephe@reddit
I've been taught them with partial power to simulate a high density altitude takeoff.
MeatServo1@reddit
Well sure, but that's the whole point of it being a required maneuver in the ACS to obtain a certificate. But if you're full power and can't get it to stall until you're 40º+ degrees nose up or hanging on the prop for 30 seconds, just... don't use full power. Don't use 30% power, but this question was contemplated and answered in the ACS by saying use at least 65% power.
>65 doesn't mean exactly 100
baritone_mike@reddit
The ACS is as specified by the examiner, if on the checkride the DPE says use full power I would like my student to be proficient in doing that. It isn’t hard to power on stall a 172 at full power.
Other than in a multi I have never practiced or taught power on stalls using partial power. 100% power is at least 65 percent.
MeatServo1@reddit
Makes sense, so do them at different power settings: 65, 75, 90, 100, etc. Whatever tickles your fancy, but if the student isn't gettin the intended lesson, do it at 65 or 70 to teach the maneuver and get the learning to happen, then try it at 100. Also, I haven't met many DPEs who are itching to do 100% power on stalls with low time PPL applicants in airplanes with larger engines. 150? Sure. Cherokee 140? Sure. SR22T? Probably not.
Both_Coast3017@reddit
Start pitching up slightly before you apply power, keep pitching up and hold it. I’ve done them starting at 55 and Vy (I forget what it is, haven’t flown a 172 in years)
IM_REFUELING@reddit
Sounds like you just need to pitch higher and start slower. I've stalled aircraft with much more than 180 hp and they'll all stall if you keep the nose high enough for long enough.
Maybe I'll change my tune if they let me take a Raptor for a spin.
RegionalJet@reddit
Are you slowing down to rotation speed before adding power and pitching for the stall?
AlbiMappaMundi@reddit
Get there quickly. A lot of students just add back pressure and let the plane hang out at a high pitch. The longer you take, the more squirrelly the plane gets, the more likely you start letting the heading wander or get a wing drop. The yoke has more travel to it, get it all the way back.