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Messages - PeterNSteinmetz

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331
Accident Review/Never Again (I hope..) / Re: Gear collapse of a V35B Bonanza at KDVT, Deer Valley AZ - September 4, 2021
« on: April 16, 2022, 08:47:06 PM »
Quote from: Steingar on April 15, 2022, 07:57:18 AM
I would add that if you need to get the flaps up after landing to get more weight on the mains you're coming in too fast.
Quote from: Steingar on October 19, 2021, 07:55:11 AM
My flaps come up on landing, to give more authority to the brakes.

Of course, it also helps to be consistent.

332
Accident Review/Never Again (I hope..) / Re: Gear collapse of a V35B Bonanza at KDVT, Deer Valley AZ - September 4, 2021
« on: April 16, 2022, 05:48:21 PM »
Quote from: Steingar on April 15, 2022, 07:57:18 AM
I've known about the piano key Bo's for a long time, don't know why you didn't, especially when flying one. 

…

My apologies, but despite the long read you made a very common mistake based on your lack of understanding of the aircraft you were flying.

Such apologies will less often be necessary if one refrains from drawing negative conclusions without actually knowing the facts.

A 1977 V35B Bonanza does not have the “piano key” switches.

333
Accident Review/Never Again (I hope..) / Gear collapse of a V35B Bonanza at KDVT, Deer Valley AZ - September 4, 2021
« on: April 16, 2022, 09:27:31 AM »
Quote from: Steingar on April 15, 2022, 07:57:18 AM
I've known about the piano key Bo's for a long time, don't know why you didn't, especially when flying one.  Were I flying I'd be completely paranoid of flipping the wrong switch.  I'd be so paranoid that I'd not touch the thing unless I was staring right at it.  To put this in context, I'm paranoid about gear up landings, enough so that the gear comes down 3 miles from the airport.  That means I have to configure the airplane prior to that, and I get majorly paranoid if anything goes wrong with that sequence, as in I turn around if the gear isn't out at 3 miles.

I would add that if you need to get the flaps up after landing to get more weight on the mains you're coming in too fast.  Yeah, I've used that trick too, but I certainly don't depend on it.  My apologies, but despite the long read you made a very common mistake based on your lack of understanding of the aircraft you were flying.

I was surprised to learn that a gear collapse is so common.

I don’t think it was so much a lack of knowledge but the primacy of the 900 hours in the Cardinal and having been taught to take the flaps up after landing right from the beginning. Combined with a lack of sufficient paranoia about going back and forth between the planes, as you note.

I say this because I noticed afterwards that in the Cardinal, even after I decided not to bring flaps up, I would tend to automatically start reaching. Took a while to break the habit. So either need to have the right habits that work in all the planes you fly or be sufficiently paranoid.

I have learned there is considerable debate in the community on the wisdom of this teaching. Some people say it is fine and dandy. Others not a good idea. I am presently in the latter camp now. Particularly if you are moving back and forth amongst types.

334
Spin Zone / Re: here's another one that will (rightly) get locked and tossed
« on: April 14, 2022, 02:10:44 PM »
My suggestion. Stop using PoA. They explicitly attempt to enforce subjective rules using mind reading. Not worth the hassle dealing with the MC there.

335
Accident Review/Never Again (I hope..) / Re: Gear collapse of a V35B Bonanza at KDVT, Deer Valley AZ - September 4, 2021
« on: April 11, 2022, 05:14:12 PM »
Another update.

After about 50 landings in my Cardinal I feel like I am not at all temped to raise the flaps now after landing until after roll-out. And always confirm the shape of the flap handle and announce.

So I guess that is about the number of repetitions to undo primacy of learning for this this type of behavior.

336
Spin Zone / Re: Covidiocy Continued
« on: February 28, 2022, 06:40:57 PM »
Quote from: Rush on February 28, 2022, 07:42:40 AM

Covidiocy is a mentally deranged cult.

It was quite striking.

337
Spin Zone / Re: Ukraine, Putin, and Biden
« on: February 26, 2022, 05:04:16 PM »
Quote from: Username on February 26, 2022, 05:00:44 PM
I think that we should keep President Depends in office.  No, we probably can't pass any legislation (which isn't a bad thing) for the next two years.   But the more we see of the doddering fool, the better chance we have of winning the presidency.  Play the long game.
I am inclined to agree. His replacement would likely be considerably worse.

338
Spin Zone / Re: Too fat to fly to space: 330lb man who won a trip on SpaceX's first tourist flt
« on: January 31, 2022, 09:41:41 PM »
Quote from: Rush on January 30, 2022, 01:39:03 PM
It's a trick question. Which weighs more, a pound of feathers or a pound of lard?
This reminds me of when my 9th grade science teacher asked “which weighs more, a pound of feathers or a pound of gold?“

Almost the whole class broke out hysterically when I answered a pound of feathers.

339
Spin Zone / Re: This post won't last long on POA.
« on: January 29, 2022, 09:29:34 AM »
Quote from: President-Elect Bob Noel on January 29, 2022, 08:58:12 AM
lots of possibilities wrt "appropriate corrective actions", eh?

Very true! I much prefer a forum where these sort of mis-statements can be corrected and discussed, rather than censored.

Oh well, glad to not spend much time on PoA anymore. Who needs the headache of constantly worrying what the MC will do on a touchy subject.

340
Spin Zone / Re: Too fat to fly to space: 330lb man who won a trip on SpaceX's first tourist flt
« on: January 29, 2022, 09:17:59 AM »
Quote from: bflynn on January 29, 2022, 06:24:41 AM
Life lesson:  Have fat friends.

I don't know. Isn't hanging around obese people a risk factor for being obese oneself?

Maybe you meant "Don't have" ?

341
Spin Zone / Re: Too fat to fly to space: 330lb man who won a trip on SpaceX's first tourist flt
« on: January 29, 2022, 09:15:30 AM »
Quote from: EppyGA - Proud Despicable on January 29, 2022, 09:05:37 AM
I have a friend with Type II. He is overweight and actually knows that if he loses weight the diabetes can go away but he just can't seem to make it happen.

For such cases, the risks of bariatric surgery seem worth it. https://uihc.org/health-topics/how-effective-bariatric-surgery

Seems like that probably would have been a good choice for the subject of the OP here as well.

342
Spin Zone / Re: Too fat to fly to space: 330lb man who won a trip on SpaceX's first tourist flt
« on: January 29, 2022, 08:24:54 AM »
I will add a story about simplified physiology stories that may be on interest here and amuse.

When we were studying kidney function many years ago in medical school, the lecturers would often have a qualitative story of function and causation. Something like the increase in sodium then causes a change in the proximal tubule. This then causes a change of concentration in sodium in the urine, which is then sensed and causes a change in the distal tubule. The change in the distal tubule then causes this other effect. There were lots of these. It was many years ago so I don’t remember the exact details.

Anything beyond simple algebra is generally avoided in the medical school curriculum as too mathematical. This led to an entire one hour lecture being used to explain an exponential decay!

In any case, I got very curious about this one day and investigated by tracing a number of these stories in our kidney physiology text. It turned out that the various stories when put together led to a positive feedback loop! This would have led to death if literally true.

So the moral for food metabolism I think is that there are a lot of interacting systems which likely require proper equations to actually understand. I imagine the relationship between the amount of carbohydrate and fat burned and protein consumed is likely governed by a number of sigmoid curve type relations and so may be qualitatively described in the extreme ends where the curves tend to flatten, but probably our bodies are often running closer to middle of the range where the slope is steeper.

343
Spin Zone / Too fat to fly to space: 330lb man who won a trip on SpaceX's first tourist flt
« on: January 29, 2022, 07:58:03 AM »
Quote from: Rush on January 29, 2022, 06:56:26 AM

But obesity doesn’t cause diabetes. Obesity and diabetes are associated, they are two results of a third factor (dysregulated blood sugar).

Biological systems are complex so it is likely an over-simplification to say one or the other causes the other. Suffice it to say that most obese people who have DM type 2 will substantially reduce the problems with DM by losing weight.

Lots of good health reasons to maintain a reasonable BMI. Hard to do in our culture where food is so cheap and processed to be very reinforcing.

344
Spin Zone / Re: Too fat to fly to space: 330lb man who won a trip on SpaceX's first tourist flt
« on: January 28, 2022, 09:23:47 PM »
There was another metabolic fact we were taught - “fat burns in the flame of carbohydrate”. IOW, your body needs 3 carbon units and can’t get them strictly from fats. It will tear down protein in muscle in order to get those to burn fats.

This is why very obese people who go on extremely low carb diets can end up damaging their hearts. They lose a ton of weight but the body burns up a ton of muscle to do it. Generally 2 pounds per week is considered maximum safe weight loss.

Somewhat of an aside for this thread, but I always found this interesting.

345
Spin Zone / Too fat to fly to space: 330lb man who won a trip on SpaceX's first tourist flt
« on: January 28, 2022, 09:02:48 PM »
Quote from: Rush on January 28, 2022, 08:53:43 PM
The study you quote doesn’t consider virtually no carb eating. IOW being in ketosis. If you are predisposed to type 2 then strictly limiting carbs certainly does treat it.

I grant that I should have said eating a lot of carbs leads to diabetes in those genetically predisposed. Agree about total calories but limiting carbs is partly about limiting total calories because small amounts of protein and fat as long as you don’t sweeten them kill the appetite.

Probably best to stick to the peer-reviewed literature on this sort of question. Lots of junk information out there on diets.

I don’t know exactly what you mean by “virtual no carb eating”. Is the mono-unsaturated diet in the following an example?

https://diabetesjournals.org/care/article/32/2/215/27520/One-Year-Comparison-of-a-High-Monounsaturated-Fat

I don’t think you eat your way into DM type 2. I think you eat your way into being obese, which predisposes to DM type 2 and that there is a genetic component. Most biological phenomena are a mixture of nature and nurture.

It is a good point that the success of most diets depends on how well they control people’s appetites so they can control total calories. My sense is that this is highly idiosyncratic.

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