PoA does educate. Who knew?

[genna]

So, after reading some threads and arguments here about this and that, i finally found time yesterday to put some of these to the test on 0-360 172P. Basic stuff, but i thought it was pretty cool and i would never have thought about them without PoA.

1. On engine out, trimming all the way up does take you pretty close to best glide speed. Little too slow(65) on this plane with full fuel, just myself aboard and some stuff in the back. Close enough to trim up and back off just a bit to be in the ballpark.
2. First time tried completely shutting down the engine using both, mixture out and fuel shut-off for about a minute or more(I was over a mile long field at high altitude when i was trying this). Mixture shuts it down almost immediately, fuel valve takes a lot longer. Also, takes a while to spin down the prop at best glide(i didn't quite take it to 0 RPM, probably about 200). Really weird feeling. As soon as you add fuel, fires right back.
3. Pushing the primer in while cranking really does make for easy starts. Even cold. 30F, cold engine: 1 before and 1 during cranking started it right up. If warmer outside, no need for the "1 before". Checklist calls for 5-6 times.

So here, PoA does educate!

 

[RyanB]

2. First time tried completely shutting down the engine using both, mixture out and fuel shut-off for about a minute or more(I was over a mile long field at high altitude when i was trying this). Mixture shuts it down almost immediately, fuel valve takes a lot longer. Also, takes a while to spin down the prop at best glide(i didn't quite take it to 0 RPM, probably about 200). Really weird feeling. As soon as you add fuel, fires right back.

Glad you found some useful tips among the mass rhetoric. Although, actually shutting the engine down in-flight to simulate an engine failure isn't the smartest thing to do. I wouldn't recommend doing it again.

 

[luvflyin]

Yup. I've learned a lot here. Ya can't take anything for granted at first read, but the pros and cons that follow are great food for thought. Plus you get some great punchlines, music and there's always an on going soap opera or two to follow

 

[mscard88]

2. First time tried completely shutting down the engine using both, mixture out and fuel shut-off for about a minute or more(I was over a mile long field at high altitude when i was trying this).

So here, PoA does educate!

Brave man.

 

[genna]

Glad you found some useful tips among the mass rhetoric. Although, actually shutting the engine down in-flight to simulate an engine failure isn't the smartest thing to do. I wouldn't recommend doing it again.

I know. I was nervous. I climbed to over 3000ft AGL almost directly over a long field to do that just in case i cannot restart. I wasn't simulating a failure. I just really wanted to experience what it feels like when the engine really stops. Idle is not quite the same. Once was enough...

 

[paflyer]

S
3. Pushing the primer in while cranking really does make for easy starts. Even cold. 30F, cold engine: 1 before and 1 during cranking started it right up. If warmer outside, no need for the "1 before". Checklist calls for 5-6 times.

So here, PoA does educate!

I tried that, no joy. Lycoming 320...

 

[dell30rb]

I tried that, no joy. Lycoming 320...

What always worked better for me on an O-320 (had accel pump) is pumping the throttle while cranking on cold days. Give 3-4 shots of prime, then after the prop has gone about 2 blades pump the throttle 2-3 times while cranking. Never pump the throttle unless you are cranking though, depending on the engine if there is no suction from the engine (cranking) the fuel sprayed by the accel pump will be pulled down into the airbox where it can be ignited if there is an engine backfire.

 

[paflyer]

What always worked better for me on an O-320 (had accel pump) is pumping the throttle while cranking on cold days. Give 3-4 shots of prime, then after the prop has gone about 2 blades pump the throttle 2-3 times while cranking. Never pump the throttle unless you are cranking though, depending on the engine if there is no suction from the engine (cranking) the fuel sprayed by the accel pump will be pulled down into the airbox where it can be ignited if there is an engine backfire.

Yep.
Also, when it's cold. the throttle is a little stiff and you can't rapidly pump.

 

[genna]

I tried that, no joy. Lycoming 320...

I'm going to assume that every engine is different. This Lyco O-360 likes this procedure, but this is the only carb engine readily available to me to test this on. I'll try it on other planes when I can.

 

[Caramon13]

Carbed 360 on my former Cherokee 180 and three primes and (if necessary) a throttle pump would always get it going real quick.

SkyTec starter also helped

 

[Tampico Trauma]

Hell, I've learned that if you want to descend quickly, you hit the sky brake.

Something about a monkey that I'm supposed to be well versed on....

And don't ever ask Sac a question.




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[flyingron]

Years ago people asked if discussing accidents really contributed to safety. Amusingly, I learned it did in another way. Years ago we had a renter flying a club 150 get flipped over at ILG when a C-130 powered up in front of him. He got lifted up and very gently rolled on his back. He was uninjured, he reported until he released his seatbelt while sitting there inverted and fell on his head. I guess my son heard me relate that story. When he was probably about 12 (and his sister 9), they were in a roll over accident and ended up hanging from their belts. Ian said he remembered my story and was careful to brace himself against the door handle before releasing his belt and made sure his sister was supported before she released hers.