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Search: Posts Made By: vlittle
Forum: Electrical Systems Today, 01:09 PM
Replies: 12
Views: 378
Posted By vlittle
Pb/PbSO4 VV

Pb/PbSO4

VV
Forum: Electrical Systems Yesterday, 09:04 PM
Replies: 12
Views: 378
Posted By vlittle
Nice device, except for the breakdown voltage,...

Nice device, except for the breakdown voltage, which in aircraft operations should be around 100V. Spikes are real, I've seen them on my oscilloscope in flight.

VV
Forum: Electrical Systems Yesterday, 07:49 PM
Replies: 12
Views: 378
Posted By vlittle
Here's your buddy's diode...

Here's your buddy's diode https://www.digikey.com/en/products/detail/micro-commercial-co/6A05/261592 It's not going to work for your application. Depending on a whole bunch of specs, you will need a...
Forum: Electrical Systems 12-03-2021, 09:02 AM
Replies: 17
Views: 1,371
Posted By vlittle
I've been using expressch since 2003 to design...

I've been using expressch since 2003 to design aircraft electrical systems. Here is an example of a complete aircraft wiring design:...
Forum: RV-9/9A 11-26-2021, 04:23 PM
Replies: 47
Views: 3,143
Posted By vlittle
My ab-initio training on a 172 required slipping...

My ab-initio training on a 172 required slipping to adjust descent angle and airspeed on every landing without flaps. Later, flap landings were introduced. Reason: electric flaps fail and you better...
Forum: Glass Cockpit 11-24-2021, 02:00 PM
Replies: 15
Views: 757
Posted By vlittle
This might help. Although it is Dynon (so the...

This might help. Although it is Dynon (so the required pullups can be configured inside the EMS), the 1n4007 diodes provide the isolation from the 12V'ish levels that the LEDs have.

Dynon will say...
Forum: RV-9/9A 11-22-2021, 09:19 AM
Replies: 47
Views: 3,143
Posted By vlittle
My 9A slipped very well. Full flaps, nose high...

My 9A slipped very well. Full flaps, nose high and FULL rudder for a short field landing. Just before landing, smoothly relax the rudder and push forward on the stick to arrest the descent rate. ...
Forum: Glass Cockpit 11-13-2021, 10:15 AM
Replies: 156
Views: 41,062
Posted By vlittle
huVVer-AVI Version 3.00 Software

I have just posted Version 3.00 of the huVVer-AVI device software and an updated QuickStart Guide here: www.vx-aviation.com/huvver-avi .

V3.00 adds a WiFi Manager for editing the WiFi credentials...
Forum: COMM 11-06-2021, 09:24 AM
Replies: 21
Views: 1,390
Posted By vlittle
Here is a similar circuit:...

Here is a similar circuit: http://www.circuitdiagram.org/images/field-strength-meter-circuit-schematic.gif

The second diode is there to protect the detector diode against large negative voltages in...
Forum: Electrical Systems 11-02-2021, 09:12 AM
Replies: 16
Views: 1,027
Posted By vlittle
I have found fast-on connectors to be unreliable...

I have found fast-on connectors to be unreliable for thermocouple connections. Instead I use barrel crimps like these:

https://media.digikey.com/Photos/Molex/0191640053.jpg

Thermocouples operate...
Forum: Safety 10-27-2021, 10:36 AM
Replies: 9
Views: 1,114
Posted By vlittle
Another great product from Paul. I would have...

Another great product from Paul. I would have used one on my new build, but I built my own controller for my Rocket a decade ago, and had some spares.

I love the logic (OFF-WW-ON) with the switch. ...
Forum: Glass Cockpit 10-25-2021, 07:35 PM
Replies: 156
Views: 41,062
Posted By vlittle
After fighting component shortages, I finally...

After fighting component shortages, I finally received the Molex connectors I needed to hardwire the HuVVer-AVI units. Previously, had to run in WiFi mode to get SkyView data. Now, I have hardwired...
Forum: Electrical Systems 10-24-2021, 11:53 AM
Replies: 27
Views: 2,557
Posted By vlittle
I've been powering up my new panel for debugging...

I've been powering up my new panel for debugging with a 30A power supply with a 7A breaker in series. My HDX has the backup battery.

Simple VFR, with comm, intercom, six huVVer-AVI units, ADAHRS,...
Forum: Glass Cockpit 10-12-2021, 08:36 PM
Replies: 156
Views: 41,062
Posted By vlittle
New School/Old School HuVVer-AVI device 6-pack....

New School/Old School
HuVVer-AVI device 6-pack.

17032
Forum: RV-7/7A 10-12-2021, 08:23 AM
Replies: 40
Views: 3,517
Posted By vlittle
I am in the 'starter on the stick' camp in my...

I am in the 'starter on the stick' camp in my Harmon Rocket. I use the existing master switch to enable the button on the stick as shown on this diagram:...
Forum: Glass Cockpit 09-15-2021, 08:39 AM
Replies: 156
Views: 41,062
Posted By vlittle
I think what you are looking for is a device that...

I think what you are looking for is a device that emulates a USB stick, but with built-in WiFi or BT to connect to an App on an iPhone that will connect to Savvy. In effect, a flight data...
Forum: Glass Cockpit 09-14-2021, 09:07 AM
Replies: 156
Views: 41,062
Posted By vlittle
My next panel under construction. Although...

My next panel under construction.

Although MakerPlane distributes the finished product, I still have retained the rights to make my own. Since I need seven of these for my next project, I dusted...
Forum: International 09-10-2021, 10:26 AM
Replies: 23
Views: 3,463
Posted By vlittle
He's the problem: I have been trying to spend...

He's the problem: I have been trying to spend my hard-earned money in the US. I continue to have supply chain problems because many US vendors don't know how to deal with Canadian customers.

In...
Forum: RV General Discussion/News 09-09-2021, 07:45 AM
Replies: 7
Views: 841
Posted By vlittle
Go with the QB, you won't regret it. The...

Go with the QB, you won't regret it. The additional cost for the QB will increase the value of the aircraft when you sell it and you will still learn all of the required skills to build your second...
Forum: Glass Cockpit 09-07-2021, 08:29 AM
Replies: 156
Views: 41,062
Posted By vlittle
Hi Carlos. Re-reading your post, I see that you...

Hi Carlos. Re-reading your post, I see that you probably meant 'front of the airplane' and 'rear of the airplane' not 'front of the panel' and 'rear of the panel'.

So, all of the huVVer-AVI...
Forum: Glass Cockpit 09-07-2021, 12:01 AM
Replies: 156
Views: 41,062
Posted By vlittle
When in doubt, read the manual! :-) Dimension...

When in doubt, read the manual! :-) Dimension drawings on page 8 http://www.huvver.tech/wp-content/uploads/huVVer-AVI-V2C.pdf

Both the 2 and 3 inch versions are identical except for the size of the...
Forum: RV-14 08-22-2021, 10:43 PM
Replies: 5
Views: 1,001
Posted By vlittle
Digikey is another source for 3M products.

Digikey is another source for 3M products.
Forum: Glass Cockpit 08-05-2021, 10:36 AM
Replies: 11
Views: 1,219
Posted By vlittle
Hi Jim. I may have a solution to your problem,...

Hi Jim.

I may have a solution to your problem, but I am on vacation right now.
In my archives, I may have a Skyview wiring hub, similar to the one shown below. That’s the potentially good news. ...
Forum: RV models of the future (RV-??) 07-25-2021, 08:58 AM
Replies: 6
Views: 2,356
Posted By vlittle
My last job in the semiconductor industry was...

My last job in the semiconductor industry was mergers & acquisitions, usually in the hundreds of $millions, but one that was over $2 billion.

That was at a time where the valuation per patent or per...
Forum: RV models of the future (RV-??) 07-24-2021, 10:09 PM
Replies: 6
Views: 2,356
Posted By vlittle
Rans, Vans. A merger should be easy to spell.

Rans, Vans. A merger should be easy to spell.
Forum: Safety 07-23-2021, 11:07 AM
Replies: 23
Views: 4,741
Posted By vlittle
I developed visual and haptic (stick buzzer) AOA...

I developed visual and haptic (stick buzzer) AOA indicators several years ago, and provided prototypes to the FAA task force. In 2020/2021 I developed the OnSpeed visual energy indicator.

I was...
Forum: Safety 07-19-2021, 09:32 PM
Replies: 25
Views: 4,370
Posted By vlittle
Rob Prior shot this (raw) video of the huVVer-AVI...

Rob Prior shot this (raw) video of the huVVer-AVI flight instruments mounted on the back seat panel, plus the one on the glareshield of my Harmon Rocket. It shows the OnSpeed energy display in...
Forum: Safety 07-19-2021, 09:36 AM
Replies: 23
Views: 4,741
Posted By vlittle
This isn't the best picture, but it shows the...

This isn't the best picture, but it shows the energy display on the glareshield. The backseat instruments can also be selected to provide an OnSpeed energy display, which would be great for...
Forum: Electrical Systems 07-18-2021, 10:42 AM
Replies: 5
Views: 1,156
Posted By vlittle
it is nice to see you analyzing Bob's drawings. ...

it is nice to see you analyzing Bob's drawings. They were always meant to be educational, not prescriptive. I think many folks try to blindly follow them without understanding, and that can lead to...
Forum: Glass Cockpit 07-16-2021, 10:30 AM
Replies: 156
Views: 41,062
Posted By vlittle
I have been asked how to get wireless data...

I have been asked how to get wireless data transmission using a Garmin G3X or G5 system. There is a straightforward way, as follows:

Using the default WiFi settings of the huVVer-AVI devices, the...
Forum: Glass Cockpit 07-13-2021, 06:01 PM
Replies: 156
Views: 41,062
Posted By vlittle
Tandem RV backseat panel

After a couple of years in development, I have installed a complete backseat panel in my Rocket.

This panel uses three of my huVVer-AVI displays, a shop-made panel, three nutplates and a 12V power...
Forum: RV General Discussion/News 07-11-2021, 12:20 PM
Replies: 12
Views: 1,624
Posted By vlittle
CFC at Boundary Bay does tail wheel training in a...

CFC at Boundary Bay does tail wheel training in a Citabria or Super Decathlon.
Good Luck.

VV
Forum: RV General Discussion/News 07-10-2021, 07:28 PM
Replies: 12
Views: 1,624
Posted By vlittle
Scott was my guy as well.... but he is very...

Scott was my guy as well.... but he is very choosy about who he trains. I had many hours in formation with him, so he knew me and trusted me not to bend his airplane.

That's why I have asked him...
Forum: RV General Discussion/News 07-10-2021, 10:01 AM
Replies: 12
Views: 1,624
Posted By vlittle
I have reached out to my RV tailwheel instructor...

I have reached out to my RV tailwheel instructor to see who is available for training locally.
Forum: Fuel Injection Systems 06-24-2021, 12:04 PM
Replies: 12
Views: 2,221
Posted By vlittle
Well put. Despite all of the resources available...

Well put. Despite all of the resources available that try to teach best wiring practices and electrical architectures, electricity is still a mystery to many otherwise talented and dedicated...
Forum: RV-10 06-24-2021, 10:39 AM
Replies: 11
Views: 1,033
Posted By vlittle
Brian. Absolutely the nicest tool after a...

Brian. Absolutely the nicest tool after a pneumatic squeezer that I have purchased to build airplanes was my angle drill kit. Everytime I need it, I think 'greatest tool ever'. I also buy lots of...
Forum: RV Building Tips/Techniques 06-23-2021, 11:06 AM
Replies: 7
Views: 1,723
Posted By vlittle
I'm on the BOD of Iris Dynamics. We make...

I'm on the BOD of Iris Dynamics. We make computer-controlled high power linear actuators and deal with rare-earth magnets all the time.

These magnets need to be treated like handling a rattlesnake....
Forum: Canada 06-18-2021, 10:57 AM
Replies: 13
Views: 2,021
Posted By vlittle
My MDRA inspector told me to send in my...

My MDRA inspector told me to send in my application for registration 6 months ahead of my estimated final inspection date to avoid delays in getting flight authority.

My tax dollars at play. Take a...
Forum: Canada 06-14-2021, 08:42 AM
Replies: 22
Views: 21,417
Posted By vlittle
I agree, and my solution for the last 17 years...

I agree, and my solution for the last 17 years has been to use a freight forwarder. It's the e-commerce providers that have recently been getting in the way due to their enhanced security.

I have...
Forum: RV General Discussion/News 06-14-2021, 08:23 AM
Replies: 15
Views: 15,079
Posted By vlittle
This makes sense. A bad diode will cause a...

This makes sense. A bad diode will cause a missing phase in the alternator output, which reduces the average voltage of the alternator.

The regulator corrects for this decline in average voltage by...
Forum: Glass Cockpit 06-13-2021, 07:44 PM
Replies: 156
Views: 41,062
Posted By vlittle
Instrument Subpanel

This panel will fit in the cutout of a Dynon SkyView. It will be a development platform for more instrument work.

12599

And here’s the OnSpeed energy display:

12598

The blanks will be for the...
Forum: Canada 06-13-2021, 02:44 PM
Replies: 22
Views: 21,417
Posted By vlittle
Thickened Border for e-Commerce

For the last year, I have struggled buying from suppliers in the USA. These problems have often forced me to use Canadian suppliers at a 15-20% premium in prices and high shipping...
Forum: RV General Discussion/News 06-07-2021, 08:22 AM
Replies: 11
Views: 2,003
Posted By vlittle
With a 200 ohm resistor, you will see between...

With a 200 ohm resistor, you will see between 0.229 and 2.27 volts, depending on the pressure being measured.

A resistor is one of the most reliable electronic components, as long as it is properly...
Forum: RV-8/8A 06-07-2021, 12:09 AM
Replies: 9
Views: 1,531
Posted By vlittle
For the throttle, I used a 1/4 threaded aluminum...

For the throttle, I used a 1/4 threaded aluminum rod, a rod-end bearing with an aluminum stand-off bushing and a ball-end from Macmaster-Carr. I also added a trim switch. The flip-up rudder pedals...
Forum: RV General Discussion/News 06-06-2021, 10:31 PM
Replies: 11
Views: 2,003
Posted By vlittle
The resistor will dissipate a maximum of 0.072...

The resistor will dissipate a maximum of 0.072 Watts (72 milliWatts) with that sensor. I would recommend at least a 250 milliWatt rated (1/4 watt) resistor or larger.

VV
Forum: RV General Discussion/News 06-06-2021, 08:22 AM
Replies: 11
Views: 2,003
Posted By vlittle
From the photo, the resistor looks like a 201 ohm...

From the photo, the resistor looks like a 201 ohm or a 301 ohm resistor (the first band looks red or orange). The confusion is that is a 1% resistor, not the normal 5%. That is fine.

The voltage...
Forum: Glass Cockpit 06-02-2021, 08:51 AM
Replies: 156
Views: 41,062
Posted By vlittle
One more update on the status of my open-source...

One more update on the status of my open-source huVVer-AVI displays;

My open-source partner (MakerPlane.org) has begun fulfilling orders for the displays! This milestone marks the end of the first...
Forum: Safety 05-18-2021, 11:42 PM
Replies: 8
Views: 1,542
Posted By vlittle
As a matter of fact, I wasn't wearing my grasses....

As a matter of fact, I wasn't wearing my grasses. That's how I misplaced the 'r'.
Forum: Safety 05-18-2021, 06:35 PM
Replies: 8
Views: 1,542
Posted By vlittle
“Most of the Country”? I told you a million...

“Most of the Country”? I told you a million times never to exaggerate!

VV from the left coast. 3000 miles away.
Forum: RV General Discussion/News 05-17-2021, 08:35 PM
Replies: 23
Views: 4,198
Posted By vlittle
Characteristic of only one plug firing on that...

Characteristic of only one plug firing on that cylinder. Easy to check.
VV
Forum: Electrical Systems 05-13-2021, 03:48 PM
Replies: 12
Views: 1,589
Posted By vlittle
On page 6 of this document...

On page 6 of this document http://www.huvver.tech/wp-content/uploads/huVVer-AVI-V2C.pdf I show an automatic fuel pump controller that has a manual overide. The switch is OFF-AUTO-ON. The ON position...
Forum: Electronic Ignition Systems 05-10-2021, 01:57 PM
Replies: 39
Views: 5,457
Posted By vlittle
“ Much consideration has been given to the LSE...

“ Much consideration has been given to the LSE electronic ignition system's susceptibility to lightning strikes, static discharge and single event upsets. This environment is unique to aircraft and...
Forum: Electronic Ignition Systems 05-08-2021, 10:22 AM
Replies: 39
Views: 5,457
Posted By vlittle
I just went through the whole decision tree on...

I just went through the whole decision tree on electronic ignitions for aircraft. I built my first EI for a 1971 Toyota Corolla almost 50 years ago!

For various reasons, I ended up with my second...
Forum: RV-14 05-08-2021, 09:56 AM
Replies: 35
Views: 5,321
Posted By vlittle
This effect is quite noticeable in my Harmon...

This effect is quite noticeable in my Harmon Rocket, it was quite a challenge to bring flaps up, adjust trim, talk to the tower and push forward on the stick while climbing like a Rocket.

My first...
Forum: Electrical Systems 05-01-2021, 07:53 PM
Replies: 66
Views: 11,929
Posted By vlittle
CPC Series II use the same pins as a Dsub. Here...

CPC Series II use the same pins as a Dsub.

Here is an example: http://www.vx-aviation.com/sprocket/photos/panel_elec/schematics-2/CONNECTORS.pdf

The CPC provides all of the signals to my panel....
Forum: Glass Cockpit 04-28-2021, 07:53 AM
Replies: 156
Views: 41,062
Posted By vlittle
Update: I just posted my Release 2.0...

Update: I just posted my Release 2.0 (production) of the libraries, now available for download http://www.huvver.tech/huvver-avi/

None of the instrument displays have changed, but I added...
Forum: Traditional Aircraft Engines 04-26-2021, 09:44 AM
Replies: 80
Views: 28,918
Posted By vlittle
I have an app on my ipad called AircraftPower...

I have an app on my ipad called AircraftPower that does it all.
Forum: Electrical Systems 04-26-2021, 09:33 AM
Replies: 7
Views: 522
Posted By vlittle
Dynon's audio outputs have series resistors. The...

Dynon's audio outputs have series resistors. The point of this is so that you can tie them together with other similar outputs without concern.

It also allows you to attenuate the audio levels by...
Forum: RV-9/9A 04-23-2021, 09:26 AM
Replies: 25
Views: 4,978
Posted By vlittle
"Apparently word of the six-cylinder evolution of...

"Apparently word of the six-cylinder evolution of the long-running 912-series engines had not yet reached Austria in time for them to actually design and prototype one. We’ll get back to you when we...
Forum: RV General Discussion/News 04-18-2021, 08:26 AM
Replies: 84
Views: 25,575
Posted By vlittle
I have determined, that with most (but not all)...

I have determined, that with most (but not all) electronic ignitions, when you pull back on power, the timing advances. This may not be ok in all flight regimes. I have an advance disable switch on...
Forum: Electronic Ignition Systems 04-18-2021, 08:08 AM
Replies: 67
Views: 12,157
Posted By vlittle
Righto, badly worded. I'm trying to point out...

Righto, badly worded. I'm trying to point out that both PIDG and AVIKRIMP brands are acceptable for various terminals and that they meet milspecs.

Thanks, Vern
Forum: Electronic Ignition Systems 04-17-2021, 10:11 AM
Replies: 67
Views: 12,157
Posted By vlittle
To be more specific, crimp terminals should meet...

To be more specific, crimp terminals should meet MS25036 specifications. Both Amp (TE) PIDG and Molex AVIKRIMP brands meet this specification. When I built my Rocket, the inspector actually asked...
Forum: RV-8/8A 04-16-2021, 02:12 PM
Replies: 7
Views: 1,321
Posted By vlittle
Check with baxter quadrants. They made a t handle...

Check with baxter quadrants. They made a t handle with switch for me.
VV
Forum: Glass Cockpit 04-12-2021, 09:14 AM
Replies: 156
Views: 41,062
Posted By vlittle
I am playing Matchmaker on that. I can't speak...

I am playing Matchmaker on that. I can't speak for the parties involved but it's a natural outcome of this project to have a one-stop shop for OnSpeed and the huVVer devices that display the OnSpeed...
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