New training aircraft

[Moneybox]

On 21/02/2025 at 8:08 AM, BurnieM said:

I am 68 and currently flying with a Dynon EFIS.

I find it faster to pull info from than a six pack.

It is more what you have the hours on as to which is more usable to you.

 

This plane has a backup EFIS with its own ADAHRS which I understand is more of a failure point than the EFIS itself.

The PFD also has a backup battery. 

Its pretty common to have a backup instrument and even a backup battery with a VFR EFIS setup 

ie Garmin G3X Touch with G5 and battery.

 

 

I see the biggest risk for me is that these electronic devices fail at high ambient temperatures. A couple of days ago I tried to use my AEG angle grinder. The battery was showing charge but the device wouldn't operate. I removed the battery and brought it into the laundry to charge. The charger indicated that it was overheated so I shoved it into the fridge. Then I pulled my iPhone out of my pocket to see if it was lunchtime. It was blacked out with a banner across the screen saying it will return to normal when it's cooled down. Not a lot of help on a aeronautical device.

 

Use iOS and iPadOS devices where the ambient temperature is between 0º and 35º C (32º to 95º F). Low- or high-temperature conditions might cause your device to change its behavior to regulate its temperature. Using an iOS or iPadOS device in very hot conditions can permanently shorten battery life.

 

Our summertime temperatures are rarely within these temperatures and that's without being enclosed in a bubble canopy.

[skippydiesel]

31 minutes ago, Moneybox said:

 

I see the biggest risk for me is that these electronic devices fail at high ambient temperatures. A couple of days ago I tried to use my AEG angle grinder. The battery was showing charge but the device wouldn't operate. I removed the battery and brought it into the laundry to charge. The charger indicated that it was overheated so I shoved it into the fridge. Then I pulled my iPhone out of my pocket to see if it was lunchtime. It was blacked out with a banner across the screen saying it will return to normal when it's cooled down. Not a lot of help on a aeronautical device.

 

Use iOS and iPadOS devices where the ambient temperature is between 0º and 35º C (32º to 95º F). Low- or high-temperature conditions might cause your device to change its behavior to regulate its temperature. Using an iOS or iPadOS device in very hot conditions can permanently shorten battery life.

 

Our summertime temperatures are rarely within these temperatures and that's without being enclosed in a bubble canopy.

Thanks Moneybox - Thought provoking observations/information - I wonder if the summer temperature within my parked, closed,  cockpit  (60C) may have been the factor which killed my Dynon ADAHRS module.

 

My guess, with time, all of this technology will become far more robust, able to tolerate extremes of temperature.😈

[spacesailor]

What do you use when temps exceed 45°C .my garage has just cooked two more AGM batteries , not in use, just new spares. 

Tested with volt meter,  only 8 volts , & not taking a one amp charge. 

I have better luck with the " wet cel." Type . ( at least , I can top up with water ) .

spacesailor

PS  :  I'm looking at 'lithium ' batteries . But worry over the fire aspect  

[skippydiesel]

On 20/02/2025 at 1:28 PM, Roundsounds said:

Your response simply reinforces my comments. You do not need to nor should judge / sense airspeed, particularly when below 100’ AGL, the effect of wind has resulted in many low level stalls by mistaking ground speed as airspeed.

You need to know the appropriate attitudes and power settings for various configurations and phases of flight. If they are set the airspeed will follow, no judgement required. I have logged over 6500 hours of flight instruction in tandem seating aeroplanes without ready access to flight instruments. This taught me to rely on attitude and airspeed, which I had been taught but really only made sense when that’s all I had. Students would often look around and ask where my ASI, ALT, Tacho were hidden as I was able to fly so accurately - nothing to with any special skills, just because I was flying visually attitude and setting power by ear. Until you are actively taught these skills you won’t develop them. 

You should be setting the appropriate power and attitude for the phase of flight, allow them to take effect, trim, then check airspeed.
I’ll guarantee your backup ASI uses a common pitot / static source, so will only display same invalid reading. Most errors are the caused by a fault in the pitot / static system. 

Just redead your this.

 

Seems to me that you are on the verge of stating that humans do not belong or a bound by the limitations of their species. Of course this is true, but only when assisted by technology.

Without technology we are no better, probably less capable, than most of the rest of the animal world.

 

With your many thousands of hours of experince, you will have the advantage over the majority of (low time) private/recreational pilots. With your advantage, I have no doubt you are capable of landing an aircraft, you are familiar with, in benign wind conditions, without recourse to technological assistance. The low time pilot is at much higher risk. Throw in a blustery cross wind, unfamiliar landing ground, new to the aircraft and the very human pilot will be struggling.😈

[Moneybox]

1 hour ago, skippydiesel said:

Thanks Moneybox - Thought provoking observations/information - I wonder if the summer temperature within my parked, closed,  cockpit  (60C) may have been the factor which killed my Dynon ADAHRS module.

 

My guess, with time, all of this technology will become far more robust, able to tolerate extremes of temperature.😈

 

I have no doubt that sort of temperature would destroy some of this hi-tech stuff. I've bought a spot welder so I can sit at the dining room table in the air-conditioning and upgrade my batteries.

 

 

CIG welding helmet.

 

 

AEG 1.5ah battery.

 

 

AEG 6ah battery and the one on the chair is a new N70Z truck battery to run the spot welder. I just replaced the battery in my $800 Kempi welding helmet too. None of these batteries can handle high ambient temperatures.

 

 

 

[Moneybox]

1 hour ago, spacesailor said:

What do you use when temps exceed 45°C .my garage has just cooked two more AGM batteries , not in use, just new spares. 

Tested with volt meter,  only 8 volts , & not taking a one amp charge. 

I have better luck with the " wet cel." Type . ( at least , I can top up with water ) .

spacesailor

PS  :  I'm looking at 'lithium ' batteries . But worry over the fire aspect  

 

I can't advise you on that one.

 

 

I've just loaded the trailer with over 400kg of batteries going for scrap. I'm always replacing tyres and batteries. Our 110ah Ritar AGM batteries lasted better than 8 years so I can't complain about them.

[spacesailor]

I changed my lead-acid. Wet batteries after about 6 years , but they were second-hand that long ago. 

Secondhand ' lithium ' 300 ah ,were selling in Sydney for a $ couple of hundred. 

spacesailor

[Moneybox]

59 minutes ago, spacesailor said:

I changed my lead-acid. Wet batteries after about 6 years , but they were second-hand that long ago. 

Secondhand ' lithium ' 300 ah ,were selling in Sydney for a $ couple of hundred. 

spacesailor

Bunnings have a range of LIFEPO4 batteries. They have a 200ah at $559 delivered.

[3rd harmonic]

Nice work on the AEG batteries and welding helmet it helps keeps the MONEYBOX full rather than empty😉!! It's the kind of stuff I do likewise..

I've got an 6Ah AEG battery that a mate gave me which unfortunately got flooded overnight when it rained (when it did actually rain some years ago) the cells are fine but the multi layer BMS PCB suffered electrolytic corrosion and is buggered!

High temperatures are a fairly big deal for LiMnCO2 or LiFePO4 batteries, the BMS will often just disconnect the pack for safety.

They especially DO NOT like being charged while hot, as that generates more heat internally - much better to let the batteries cool down before wacking them on charge.

Yeah, those 12v LiFePO4 batteries are great for caravans/campers ect but a serious stand alone power system with a 24v or 48v bank is better resolved by using individual 3.2v block cells with separate BMS and cell balancing system (I was a CEC accredited designer of solar off grid stand alone power systems for a while)

Edited 11 hours ago by 3rd harmonic
extra sarcastic comment