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Search: Posts Made By: vlittle
Forum: RV Building Tips/Techniques Yesterday, 08:32 PM
Replies: 3
Views: 77
Posted By vlittle
I have an OFF-ARM-ON Switch on the panel. In the...

I have an OFF-ARM-ON Switch on the panel. In the ARM position, the Infinity grip pinky switch is enabled. Maybe...
Forum: COMM 09-18-2018, 07:07 PM
Replies: 13
Views: 1,221
Posted By vlittle
Check this thread:...

Check this thread: http://www.vansairforce.com/community/showthread.php?t=111560&highlight=Bluetooth+vern

V
Forum: Glass Cockpit 09-15-2018, 07:31 AM
Replies: 18
Views: 4,327
Posted By vlittle
Well I finished my other project and can slowly...

Well I finished my other project and can slowly ramp up again on this.

My intention with the Falcon-ESP32 project is to provide complete open-source design information so that you can order boards...
Forum: VAF Classifieds (posts in here deleted after 30 days) 09-05-2018, 12:48 PM
Replies: 7
Views: 484
Posted By vlittle
Buy a good one. You’ll never be sorry. The cheap...

Buy a good one. You’ll never be sorry. The cheap ones tend to chatter.
Forum: RV General Discussion/News 09-01-2018, 09:15 AM
Replies: 346
Views: 73,949
Posted By vlittle
This is not the place for this discussion, sorry.

This is not the place for this discussion, sorry.
Forum: Rocket 09-01-2018, 09:05 AM
Replies: 30
Views: 3,638
Posted By vlittle
At 6'2" and on the large side, there is no...

At 6'2" and on the large side, there is no comparison... the Rocket is like a living room compared to the RV-8.

Let's face it. You know what you want...

Here's are pictures of the one for sale...
Forum: RV General Discussion/News 08-30-2018, 07:05 PM
Replies: 346
Views: 73,949
Posted By vlittle
Doug’s manifesto on the home page 18/08/30 that...

Doug’s manifesto on the home page 18/08/30 that is pining for an RV ‘Super Cub’ is spot on. The market has changed. Boomers are getting older. Low and slow local flying is more attractive. Landing on...
Forum: Fuel Injection Systems 08-27-2018, 08:17 PM
Replies: 12
Views: 2,070
Posted By vlittle
In the distant past, I would design electronic...

In the distant past, I would design electronic assemblies to fit in the Canada Post Light Packet or Small Packet categories. This was so economical that I offered free shipping anywhere in the...
Forum: Electrical Systems 08-22-2018, 06:55 AM
Replies: 44
Views: 3,831
Posted By vlittle
Hey man, it was the 60's. I don't remember...

Hey man, it was the 60's. I don't remember much.

Just to rub it in. I have the January, 1975 edition of Popular Electronics. It's been in a zip lock bag since I read it in 1974 and has my name on...
Forum: RV-7/7A 08-19-2018, 07:11 PM
Replies: 14
Views: 1,616
Posted By vlittle
Let me clarify. My controller positions both...

Let me clarify. My controller positions both flaps and trim simultaneously, greatly reducing workload, especially in the go-around. I fully retained the manual position system for normal flaps-only...
Forum: Electrical Systems 08-17-2018, 05:33 PM
Replies: 16
Views: 1,051
Posted By vlittle
Every procedure must have a specification. That’s...

Every procedure must have a specification. That’s true in any manufacturing process that purports to have a quality standard. Measuring to spec is another problem, so many mfrs adopt a ‘correct by...
Forum: RV-4 08-15-2018, 08:01 AM
Replies: 89
Views: 56,632
Posted By vlittle
That was my original purpose with the 380s as...

That was my original purpose with the 380s as well. Unfortunately, the James pants are just too tight of a fit. Everything was fine until I reversed the tires on the rims, then they...
Forum: RV-4 08-14-2018, 03:38 PM
Replies: 89
Views: 56,632
Posted By vlittle
I put 380’s on my HRII with the Sam James pants,...

I put 380’s on my HRII with the Sam James pants, but itwas too tight of a fit. In the end I used Desser retreads which are the same diameter as the 380s, but narrower.
Forum: RV-9/9A 08-12-2018, 09:23 AM
Replies: 17
Views: 1,824
Posted By vlittle
Terry, with your flight hours, any of the RVs...

Terry, with your flight hours, any of the RVs will work for you. It all depends on the mission. I built a 9A intending to use it for long cross countries, but most of my flights ended up being...
Forum: Electrical Systems 08-01-2018, 09:47 PM
Replies: 8
Views: 792
Posted By vlittle
What I'd really like to know is who makes the...

What I'd really like to know is who makes the Cavalon's 3" instruments. Not in your pictures, but they are beautiful Hi Res LCDs. They aren't from MGL or AeroVonics.
Forum: RV General Discussion/News 07-28-2018, 06:50 PM
Replies: 35
Views: 6,621
Posted By vlittle
Well that's a problem unless there's another way....

Well that's a problem unless there's another way. I still like the aft mounted alternator, though.
Forum: RV General Discussion/News 07-28-2018, 10:08 AM
Replies: 35
Views: 6,621
Posted By vlittle
Ross, love what you are doing. I have a...

Ross, love what you are doing.
I have a suggestion for you: make a version of the flywheel without the pully.

Here's why:...
Forum: Electrical Systems 07-27-2018, 01:20 PM
Replies: 44
Views: 8,318
Posted By vlittle
Actually, the rectifier section is not generating...

Actually, the rectifier section is not generating more heat. It's the field coil that is generating more heat at low RPMs. The rectifier gets hotter because the field coil is hotter and the...
Forum: RV General Discussion/News 07-24-2018, 07:00 PM
Replies: 19
Views: 2,337
Posted By vlittle
Vans' wheel jackpoint kit and a right angle...

Vans' wheel jackpoint kit and a right angle screwdriver to get at the lowest screws on your wheelpants when you have a flat tire. Grrrr.
Forum: RV-7/7A 07-24-2018, 05:46 PM
Replies: 14
Views: 1,616
Posted By vlittle
I've done a deep dive on flap positioning systems...

I've done a deep dive on flap positioning systems and not been totally satisfied with any of the products.

So what's an old engineer going to do? Yup, I designed my own. It works in parallel with...
Forum: RV Ongoing Maintenance Issues 07-22-2018, 09:10 PM
Replies: 12
Views: 1,190
Posted By vlittle
References http://www.techenomics.net/oil-fluid-an...

References
http://www.techenomics.net/oil-fluid-analysis/test-explanations/
https://www.blackstone-labs.com/the-silicon-bugaboo.php
Forum: RV Ongoing Maintenance Issues 07-22-2018, 10:07 AM
Replies: 12
Views: 1,190
Posted By vlittle
A common source of elemental silicon in your oil...

A common source of elemental silicon in your oil analysis is from silicone grease (DC-4) used as a lubricant on the oil filter rubber sealing ring.

If you don't do your own filter changes, your...
Forum: RV General Discussion/News 07-21-2018, 11:56 PM
Replies: 737
Views: 144,987
Posted By vlittle
Or these....

Or these. http://www.galco.com/buy/IDEC/AL6H-M24P-G IDEC makes lamps in various shapes and colors with and without integrated switches. Use them in the Rocket. The master alarm lamp I use as a push...
Forum: Electronic Ignition Systems 07-20-2018, 10:03 AM
Replies: 68
Views: 6,271
Posted By vlittle
Hi Otis. I have some educated opinions on...

Hi Otis. I have some educated opinions on this.

1. Over rev limitation. I agree.
2. Software vs. discrete logic. I agree in general, but at some point software will be embedded in everything. I...
Forum: RV Photo/Video URLs 07-18-2018, 11:16 PM
Replies: 8
Views: 1,036
Posted By vlittle
Beautiful part of the world! I am fortunate to...

Beautiful part of the world! I am fortunate to see the San Juan and the Gulf Islands every day. Except that day I was intercepted by an E/A-18 from Whidbey NAS while sightseeing in my RV...

V
Forum: RV-8/8A 07-12-2018, 09:49 AM
Replies: 7
Views: 1,079
Posted By vlittle
I highly recommend that airplane owners talk to a...

I highly recommend that airplane owners talk to a paint shop about the effect of silicone contamination. Using a product like silicone lube or Pledge may make your aircraft difficult to...
Forum: RV-12 07-08-2018, 03:56 PM
Replies: 24
Views: 3,605
Posted By vlittle
In a perfect world, the 100LL replacement can be...

In a perfect world, the 100LL replacement can be made street legal and the auto industry will embrace it to build higher compression and more efficient engines with longer range. This will lead to...
Forum: Glass Cockpit 06-23-2018, 02:23 PM
Replies: 8
Views: 1,172
Posted By vlittle
It could be used as a magnetic heading indicator,...

It could be used as a magnetic heading indicator, thus completing a six-pack. If you could emulate round dials on the ASI and Altimeter, better yet!

V
Forum: Glass Cockpit 06-23-2018, 12:32 PM
Replies: 8
Views: 1,172
Posted By vlittle
Rainier, thanks for introducing these! I've had...

Rainier, thanks for introducing these! I've had my fingers crossed for several years hoping you would.

Although I'm a fan of modern EFIS systems, I find them expensive overkill for VFR flight....
Forum: RV General Discussion/News 06-21-2018, 09:08 PM
Replies: 10
Views: 2,202
Posted By vlittle
4) the simplest and most reliable flap...

4) the simplest and most reliable flap positioning is an (on)-off-on switch (momentary in the down position). I'm not a fan of the flaps positioning systems unless they also dial in trim at the same...
Forum: RV General Discussion/News 06-15-2018, 12:08 PM
Replies: 11
Views: 1,182
Posted By vlittle
Scroll down here...

Scroll down here (http://www.vx-aviation.com/sprocket/empennage.htm) to see what I did. A lot of work.
Forum: Electrical Systems 06-14-2018, 06:03 PM
Replies: 44
Views: 3,831
Posted By vlittle
I still have CK722 transistors and 1N314 diodes. ...

I still have CK722 transistors and 1N314 diodes. Hoping they make a comeback, like vinyl records. Anyone who understands the last sentence is ooold!
Forum: RV General Discussion/News 06-14-2018, 09:11 AM
Replies: 28
Views: 2,104
Posted By vlittle
I would recommend a separate IDENT pushbutton for...

I would recommend a separate IDENT pushbutton for the transponder. Saves key pressess during busy times. I second the motion to have two 10 inch screens.

Consider ditching the backup instruments in...
Forum: RV General Discussion/News 06-09-2018, 06:02 PM
Replies: 11
Views: 1,350
Posted By vlittle
An ON-OFF-ON switch can be made to operate as an...

An ON-OFF-ON switch can be made to operate as an OFF-WIGWAG-ON switch
with the circuit shown in this link (http://vx-aviation.com/sprocket/photos/panel_elec/schematics-2/WWX-1A.pdf). The application...
Forum: RV General Discussion/News 05-30-2018, 04:18 PM
Replies: 187
Views: 66,782
Posted By vlittle
My second airplane is a Harmon Rocket. My third...

My second airplane is a Harmon Rocket.
My third airplane is, however...

http://www.vx-aviation.com/S-21/Wings/IMG_9.jpg
Forum: Electrical Systems 05-30-2018, 07:55 AM
Replies: 261
Views: 17,815
Posted By vlittle
I had Carling switch failures in my RV-9A leading...

I had Carling switch failures in my RV-9A leading to burnt wiring and terminals in 2006. I published a forensic analysis on VAF and Aeroelectric but it is now obscured in the depths of the interweb....
Forum: Glass Cockpit 05-10-2018, 07:32 AM
Replies: 18
Views: 4,327
Posted By vlittle
Update: Here's the PCB assembly. The ESP-32...

Update: Here's the PCB assembly. The ESP-32 processor module has been removed to show the board details. There are two trim motor drivers and a pair of relays for driving flaps.

This board works...
Forum: RV-8/8A 05-01-2018, 06:53 PM
Replies: 31
Views: 4,328
Posted By vlittle
A skid does not require cross-control... that's a...

A skid does not require cross-control... that's a slip.
Try a banked turn at low speed and add inside rudder... now you'll be upside down.
Forum: Glass Cockpit 04-25-2018, 09:45 AM
Replies: 9
Views: 3,153
Posted By vlittle
See this link for a simple external power port to...

See this link for a simple external power port to run a SkyView and charge its battery.

The rest of the aircraft does not power...
Forum: RV General Discussion/News 04-22-2018, 11:31 PM
Replies: 20
Views: 1,620
Posted By vlittle
I am targeting a pH of around 8.2.

I am targeting a pH of around 8.2.
Forum: RV General Discussion/News 04-22-2018, 08:03 AM
Replies: 20
Views: 1,620
Posted By vlittle
I blended my own degreaser using DEGBE, plus a pH...

I blended my own degreaser using DEGBE, plus a pH adjuster (sodium metasilicate) and surfactant (Dawn). I prepared a number of test coupons that compared the DEGBE preparation vs MEK. All were...
Forum: Electrical Systems 04-19-2018, 06:49 PM
Replies: 22
Views: 1,873
Posted By vlittle
I would extend this statement to say 'a high...

I would extend this statement to say 'a high quality properly rated switch'. Many of the switches used in E-AB Aircraft and sold by reputable suppliers have a high failure rate.

In my rocket, I...
Forum: Electrical Systems 04-15-2018, 05:34 PM
Replies: 8
Views: 924
Posted By vlittle
Charles, please also consider putting an...

Charles, please also consider putting an Arm/Disarm toggle switch in the system to unambigously cut power in an emergency. You don't want to be pumping oil in the event of a fire.

V
Forum: Glass Cockpit 04-10-2018, 06:44 PM
Replies: 18
Views: 4,327
Posted By vlittle
What Kevin said. It's an expensive function, but...

What Kevin said.
It's an expensive function, but it handles all kinds of electrical issues that cars and airplanes can experience.

When all else fails, there's always the fuse as well.
Forum: Glass Cockpit 04-08-2018, 07:39 PM
Replies: 18
Views: 4,327
Posted By vlittle
Here's the prototype schematic. Check back for...

Here's the prototype schematic. Check back for updates.

http://vx-aviation.com/documents/Falcon-ESP/Schematic_Falcon-ESP.png
Forum: Glass Cockpit 04-07-2018, 10:05 AM
Replies: 18
Views: 4,327
Posted By vlittle
The next generation aviation controller

Here's a teaser....

http://vx-aviation.com/documents/Falcon-ESP/Falcon-ESP_pcb.jpg

This project uses 4-layer SMT boards and is not as customizable as the Falcon-AVR through-hole design.

In many...
Forum: Electrical Systems 04-07-2018, 07:32 AM
Replies: 5
Views: 1,885
Posted By vlittle
For the type of work we do, you don't need custom...

For the type of work we do, you don't need custom libraries. Just create a symbol at the top level, then copy and past it as you need it. You can always save it to a library, but how many airplanes...
Forum: Glass Cockpit 03-16-2018, 06:29 PM
Replies: 32
Views: 4,443
Posted By vlittle
...proving once again that the only reason to...

...proving once again that the only reason to build an airplane is to design cool electronics gizmos to run it!
Forum: Glass Cockpit 03-16-2018, 10:20 AM
Replies: 32
Views: 4,443
Posted By vlittle
email sent. Perhaps we can get together when I'm...

email sent. Perhaps we can get together when I'm in Arizona.
Vern
Forum: Glass Cockpit 03-16-2018, 08:31 AM
Replies: 32
Views: 4,443
Posted By vlittle
Nice work! I really like this kind of stuff. If...

Nice work! I really like this kind of stuff.

If it helps, here are some of the configurations for the original SkyView wiring hubs. I released them as open source many years ago, but I love the...
Forum: Fuel Injection Systems 03-14-2018, 09:52 AM
Replies: 13
Views: 3,103
Posted By vlittle
...The weakest part of the EFII kit was always...

...The weakest part of the EFII kit was always the 1990s technology SDS ECU that was included....

It's a well known fact that no good technology came out of the 90's, as long as you ignore the...
Forum: RV General Discussion/News 03-06-2018, 03:31 PM
Replies: 24
Views: 4,622
Posted By vlittle
...the industry has been integrated into the U.S....

...the industry has been integrated into the U.S. economy for more than 50 years and that the Pentagon considers Canadian aluminum production a strategic military supply.
Forum: Electrical Systems 03-04-2018, 07:48 AM
Replies: 10
Views: 1,552
Posted By vlittle
It doesn't matter electrically if you use a...

It doesn't matter electrically if you use a 1N4006 or a 1N5400, but the 5400 is more mechanically robust.

After crimping it makes sense to solder the ends as well. Crimp terminals are not designed...
Forum: RV-9/9A 02-28-2018, 08:22 AM
Replies: 10
Views: 1,315
Posted By vlittle
There is a video of an RV performing a forced...

There is a video of an RV performing a forced landing in the water near a beach after a mid-air collision. The pilot had slid open his canopy before touchdown. ...
Forum: RV General Discussion/News 02-21-2018, 08:08 AM
Replies: 52
Views: 6,786
Posted By vlittle
+1 I could do very steep approaches in my 9A...

+1

I could do very steep approaches in my 9A with full flaps and full rudder. Sometimes it was preferred because the nose was so high, I had to slip to see the runway threshold.

Go practice it at...
Forum: Electrical Systems 02-20-2018, 10:01 PM
Replies: 24
Views: 2,203
Posted By vlittle
Yes, I use speed scheduling by sniffing the...

Yes, I use speed scheduling by sniffing the Airspeed from the SkyView serial stream. I show this method in Figure 1 here:...
Forum: Electrical Systems 02-20-2018, 08:01 AM
Replies: 24
Views: 2,203
Posted By vlittle
Good idea. I know from experience that you want...

Good idea. I know from experience that you want this stuff to be well protected from bad things (overvoltages, short circuits, ESD, lightning, high temperatures).

V
Forum: Electrical Systems 02-16-2018, 08:55 AM
Replies: 24
Views: 2,203
Posted By vlittle
A lesson learned from the development of my board...

A lesson learned from the development of my board is that it's really a limitation to have only one hardware serial port. In order to add WiFi and sniff a SkyView serial stream at the same time, I...
Forum: Electrical Systems 02-15-2018, 01:58 PM
Replies: 24
Views: 2,203
Posted By vlittle
I am using the Arduino port now, after much...

I am using the Arduino port now, after much manual futzing. I am part way through an electrical design for an ‘aviation grade’ pcb, but I have been overwhelmed by follow up from the CES.

V
Forum: Electrical Systems 02-15-2018, 11:39 AM
Replies: 24
Views: 2,203
Posted By vlittle
<from Vern> When I did my Falcon-AVR board, I...

<from Vern> When I did my Falcon-AVR board, I used the ESP8266 to provide WiFi connectivity. I've recently started using the ESP32, which has enough horsepower to replace the Teensy and ESP8266...
Forum: Electrical Systems 02-14-2018, 03:42 PM
Replies: 24
Views: 2,203
Posted By vlittle
All I have is a few blank pcbs. V

All I have is a few blank pcbs.
V
Forum: Electrical Systems 02-14-2018, 08:04 AM
Replies: 24
Views: 2,203
Posted By vlittle
Hi Matt, nice going. It is nice to see several...

Hi Matt, nice going. It is nice to see several folks using Arduino stuff in the cockpit. For reference, here is my thread on...
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