Talk me into a stall vane

[StuBob]

Speaking of cutting holes in leading edges.......

If I'm planning on an AOA system, is there any reason to install the Van's stall warner?

[DaleB]

Can't think of one. I disconnected mine and will cover the hole when I repaint.

[Mike S]

All depends on how much you buy into the concept of redundancy and mechanical backups to electronic geewhiz stuff.

[Nihon_Ni]

I considered the same thing on my -8. I didn't think about it before I placed my order for the wing kit or I probably would have deleted the stall warner kit. I considered dimpling the prepunched holes in the wing skin and riveting them closed and selling the stall warner here (for probably pennies). I've flown plenty of airplanes without any type of stall warning and I don't consider them dangerous or lacking. But with all the emphasis recently on loss of control accidents in EABs and the Founder's Innovation Prize, I decided a redundant stall warning system was probably worth the extra time and weight to put it in, since I already had everything on hand.

[wirejock]

I installed it for redundancy.

[DaleB]

Originally Posted by Mike S

All depends on how much you buy into the concept of redundancy and mechanical backups to electronic geewhiz stuff.

Not to be nit-picky, but the fact that there are mechanical parts involved does not (in my humble opinion) qualify the stall warning vane system as a mechanical backup. It's an electrical switch that either drives a digital input on the EFIS, or uses an electronic tone generator. The only added value I could see is of you use the separate tone generator board and bypass the EFIS entirely, which only bypasses the EFIS. It's still dependent on the electrical system, intercom, etc.

That said, if you are more comfortable installing it, then by all means install it. That's the great thing about experimental aircraft, no?

[Lynnb]

I had heard, and not verified, that if you ever wanted to sell your plane and someone from Canada wanted to buy it, it was required up there.

[Canadian_JOY]

I can confirm stall warning is NOT required on amateur-built aircraft in Canada.

[Lynnb]

See I was misinformed. Owell, installed it anyway.

[BobTurner]

Do you want a stall warning device to be up and running for your first takeoff? I *think* most if not all the efis based AOA systems need to be calibrated in flight.