Heated stall warner for M20J?

[Ibra]

I know FIKI birds have heated stall warners.

I had my stall warner stuck up after landing and on taxi bumps for takeoff.

Does anyone know if M20J has modification for heated stall warner? my bird is TKS, and it looks like I have to work the panels around it...

I had it stuck while walking around in freezing fog (and another day after washing aircraft in -10C). The sound is annoying, and having working stall warner in all weather conditions would be very good.

Edited Sunday at 10:38 PM by Ibra

[exM20K]

The heated FIKI units are different.  They sit on top of the panel.

Even if you could make it work, I strongly discourage having anything to do with the vendor, Safe Flight Instrument in White Plains, NY.  They charge $3500+ for overhaul, which takes 30 days. But the cherry on top was getting the hull I sent them back not once, but twice, still in a malfunctioning state. The first return they said, “function check OK. $410 diagnosis fee.” We’ll, the issue was that it wouldn’t *not* function.

 

In the end, they relented and sent a new unit. This took months, and access to the wiring harness/plugs is via a riveted panel, which must be drilled out.

[Fritz1]

As stated supra, the FIKI stall warner and the panel are different, I would not want to cut and drill into a titanium TKS panel, the FIKI stall warner is a shaky contraption

[bigmo]

Any chance you have a low cost option for an AOA? I don't want to say the stall horn doesn't serve a purpose, but a properly configured AOA is a phenomenal tool. To me, sort of a full set of gauges vs a check engine light (maybe not a great analogy). 

[Ibra]

Indeed, an AoA (with audio warning) would be neat and less invasive than heated stall warner 

I also wonder why units like G5 or GI275 can't calculate a "proxy AoA" using GPS data and existing Pneumatic data?

GI275 has Synthetic-Vision with attitude and flight-path-vector, which all it needs to get AoA for non accelerated level flight in calm air. If one adds 3 axis G-meter, angle of bank, "total energy" vario...they will get an AoA !

 

Edited Monday at 09:53 AM by Ibra

[GeeBee]

Since there is a cherry, I'll supply the whipped cream. A new one is about 8000 dollars, last time I checked.

[exM20K]

3 hours ago, GeeBee said:

Since there is a cherry, I'll supply the whipped cream. A new one is about 8000 dollars, last time I checked.

Pricing that would make even Hartzell blush. 

[exM20K]

14 hours ago, Fritz1 said:

As stated supra, the FIKI stall warner and the panel are different, I would not want to cut and drill into a titanium TKS panel, the FIKI stall warner is a shaky contraption

@CAV Ice may have some guidance for an add-on heated stall switch, but the FIKI one is the only one I’ve seen. It appears to be dipped in some material that has the heating elements embedded, and it is not obvious how one could do that to the existing switch.

It is a pity that a heated AOA cannot be substituted for this inferior device.  Maybe that’s something the new head at AOPA can push.

-dan

[A64Pilot]

20 hours ago, bigmo said:

Any chance you have a low cost option for an AOA? I don't want to say the stall horn doesn't serve a purpose, but a properly configured AOA is a phenomenal tool. To me, sort of a full set of gauges vs a check engine light (maybe not a great analogy). 

Neither would likely function properly in an icing environment, but also ice build up, even in small amounts changes the airfoil, and therefore changes the critical angle of attack, so neither would be particularly accurate