Tachs also can go bad/out.

I find the idea with the rearview mirror on the winglet excellent!

Of course you dont stick an actual mirror there, but put some stainless foil with adhesive backing on. You don't need a telescope clear image, just enough to tell wether the club is milling or not....

Try it out, if it doesn't work, all it takes is little WD40 to remove the glue...

 

TJ

TJ,

 

I was up all last night thinking about the same thing. (all right some of the night) There are  other indicators of a stopped prop which are not codependent. With a stopped prop, there will be no oil pressure. With a stopped prop, there will be no charging. With a stopped prop, the noise level may be different. With a stopped prop the vibration level will be different. With a stopped prop there will be no fuel flow. With a stopped prop EGT and CHT will drop to ambient. I don't know what the difference in the way the Cozy feels with a stopped prop, but I imagine it would be different.

 

I remember, in the past, that the Cessna 337 push me - pull you twin, designed to be the safest twin by virtue of it's centerline thrust, had one of the worst engine out accident rates because pilots were unaware of a rear engine failure, took off with the front engine, only. Thinking that they had full power proceeded to climb and stall out. Other than an AD note which required the rear engine to be brought to TO power before advancing the front engine, if memory serves me correctly there was an indicator light (idiot style) that indicated a stopped rear engine.

 

It would seem that a simple digital circuit could be easily designed to illuminate or sound when a combination of the above items occur simultaneously.

 

Rich