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Search: Posts Made By: akschu
Forum: Electrical Systems 11-30-2021, 12:38 AM
Replies: 17
Views: 1,360
Posted By akschu
Iím using diagrams.net. Itís specially for...

Iím using diagrams.net. Itís specially for drawings so itís less complex than cad, and if you move stuff around the wire lines stay connected.
Forum: ADS-B 11-22-2021, 07:56 PM
Replies: 4
Views: 898
Posted By akschu
IF you look at the GDL-82 install manual on page...

IF you look at the GDL-82 install manual on page 2-5:

https://static.garmin.com/pumac/190-01810-00_06.pdf

You will see that an IFR navigator can provide the GDL-82 GPS position, and in fact, you...
Forum: VAF Classifieds (posts in here deleted after 30 days) 11-08-2021, 06:48 PM
Replies: 8
Views: 1,270
Posted By akschu
He is busy, but makes good stuff and is trying to...

He is busy, but makes good stuff and is trying to keep up, keep trying.

I just got into his production queue, so he is still kickingÖ.
Forum: Electrical Systems 11-01-2021, 01:50 PM
Replies: 26
Views: 1,956
Posted By akschu
I got the square switch mount version of the Blue...

I got the square switch mount version of the Blue Sea systems USB charger, but didn't like how it stuck out on my panel. I ended up making a rectangle donut that the charger snaps into that I mount...
Forum: Electrical Systems 10-21-2021, 09:34 AM
Replies: 22
Views: 2,115
Posted By akschu
Remember that SDS will give you the advance and...

Remember that SDS will give you the advance and let you program it yourself as well as give you a LOP button.

EFII is a black box. It's not entirely clear what they are doing.

That may or may not...
Forum: Electrical Systems 10-21-2021, 07:04 AM
Replies: 22
Views: 2,115
Posted By akschu
I'm not really a fan of the EFII Bus manager...

I'm not really a fan of the EFII Bus manager because it routes your main (and essential) bus through standard through hole relays instead of using a firewall mount continuous duty contactor. To...
Forum: Electrical Systems 10-08-2021, 02:35 PM
Replies: 28
Views: 2,892
Posted By akschu
Part of my design decisions are to provide very...

Part of my design decisions are to provide very reliable power for key systems, but also provide startup power to engine monitoring, limit the number of switches and decisions the pilot must make,...
Forum: Electrical Systems 10-08-2021, 02:18 PM
Replies: 28
Views: 2,892
Posted By akschu
I looked at a lot of drawings and ways of doing...

I looked at a lot of drawings and ways of doing this, I think you can break this down into 3 fundamentally different solutions:

1. Dual alternators always online and try to make sure that one is at...
Forum: ADS-B 10-07-2021, 08:02 PM
Replies: 4
Views: 479
Posted By akschu
Iíd pick hard wired over wireless every time. ...

Iíd pick hard wired over wireless every time. There are no extra knobs to tune, donít pass go, donít collect $200, the GTX continuously spits out its squawk code over rs-232 and the echo knows what...
Forum: GPS 10-06-2021, 10:28 AM
Replies: 18
Views: 1,317
Posted By akschu
I've gone back and forth on all of this and have...

I've gone back and forth on all of this and have a bit to say about it, here goes:

1. The ipad comes in wifi only or cellular+gps. If you get the cellular model you don't need to hook it up to a...
Forum: Glass Cockpit 09-29-2021, 08:11 AM
Replies: 4
Views: 762
Posted By akschu
Declination...

Declination perhaps?

https://www.usgs.gov/science-support/osqi/yes/resources-teachers/magnetic-declination-varies-considerably-across-united
Forum: Electronic Ignition Systems 09-28-2021, 11:24 PM
Replies: 11
Views: 1,564
Posted By akschu
Makes sense, lots of stuff depends on locktite. ...

Makes sense, lots of stuff depends on locktite. Just wanted to make sure I understood how this is locked.
Forum: Electronic Ignition Systems 09-28-2021, 04:32 PM
Replies: 11
Views: 1,564
Posted By akschu
CPI safety wire.

I was looking at the CPI crank trigger setup and saw that two of the bolts have safety wires, and two don't:

Notice that the bolts holding it to the case have safety wires, but the bolts holding the...
Forum: Electronic Ignition Systems 09-24-2021, 12:00 PM
Replies: 91
Views: 49,706
Posted By akschu
I replied on that list. I think this is more...

I replied on that list. I think this is more complex than "shared bus bad discrete bus good." I suspect it has a lot to do with length and gauge of wire. What I don't have a good handle on is how...
Forum: Electronic Ignition Systems 09-22-2021, 02:33 PM
Replies: 91
Views: 49,706
Posted By akschu
20g can't carry 10 amps sustained over any real...

20g can't carry 10 amps sustained over any real length, but it can carry 10amps for around 3 feet as the voltage drop is around 1/2 volt which is 6 watts. If the run between the red and purple...
Forum: Electronic Ignition Systems 09-22-2021, 12:10 PM
Replies: 91
Views: 49,706
Posted By akschu
Thanks for that. I see now in the documentation...

Thanks for that. I see now in the documentation how it works:



Now I would like to know why it needs 3 fuses (7 if you include the built in ones). That seems pretty excessive:

If the...
Forum: Electronic Ignition Systems 09-21-2021, 10:17 AM
Replies: 91
Views: 49,706
Posted By akschu
I'm looking at the wiring diagram for the CPI-2...

I'm looking at the wiring diagram for the CPI-2 and I don't understand why the coil and ECU power wires need to be switched, but not the backup battery.

The docs say that the backup battery draw is...
Forum: Glass Cockpit 09-17-2021, 07:40 PM
Replies: 9
Views: 812
Posted By akschu
Right, makes sense. So the only real mode of...

Right, makes sense. So the only real mode of failure on that setup is a short to ground on the aux bus tripping breakers/fuses on the main bus if they blow before the diode. A simple solution is to...
Forum: Glass Cockpit 09-17-2021, 08:42 AM
Replies: 9
Views: 812
Posted By akschu
I think I found a solution: From the BandC...

I think I found a solution:

From the BandC regulator documentation (https://bandc.com/wp-content/uploads/2018/05/sd-8_trouble_revA.pdf)


From the ETX104 battery specs...
Forum: Glass Cockpit 09-16-2021, 09:28 PM
Replies: 9
Views: 812
Posted By akschu
The power distribution system design is in...

The power distribution system design is in progress. Some of it depends on how the garmin stuff deals with power failover.

Right now I have two completely independent electrical systems. The main...
Forum: Glass Cockpit 09-16-2021, 06:23 PM
Replies: 9
Views: 812
Posted By akschu
That's what I was thinking too, but I hope that...

That's what I was thinking too, but I hope that isn't the case because my secondary power system is only good for 8 amps, and I specifically don't want to have a situation where the current draw...
Forum: Glass Cockpit 09-16-2021, 01:14 PM
Replies: 9
Views: 812
Posted By akschu
G3X Power 1 and Power 2 failover question

I have a question about the power input that doesn't seem to be covered in the manual which only states that there are diodes to prevent current from flowing between the two inputs.

If I have 13.5...
Forum: RV-15 09-07-2021, 05:12 PM
Replies: 235
Views: 40,636
Posted By akschu
918 is a great number, but I think the 919 would...

918 is a great number, but I think the 919 would have been better.
Forum: Glass Cockpit 09-04-2021, 11:26 AM
Replies: 7
Views: 935
Posted By akschu
Thanks for the reply, I don't think that's a huge...

Thanks for the reply, I don't think that's a huge issue for me since the vast majority of frequency input will come from tapping an airport in the g3x.

Does anyone know of any functional difference...
Forum: Glass Cockpit 09-03-2021, 02:53 PM
Replies: 7
Views: 935
Posted By akschu
GPS-175 and GTR-20 vs GNC-355.

I need a radio and a navigator.

Looks like the GNC-355 is 1/2lb lighter than a separate GPS-175 and GTR-20.

I have an audio panel so the intercom and bluetooth don't do anything for me.

I guess...
Forum: RV-15 08-29-2021, 06:04 PM
Replies: 235
Views: 40,636
Posted By akschu
Thatís a sweet setup. Iíd be thrilled with that.

Thatís a sweet setup. Iíd be thrilled with that.
Forum: RV-15 08-29-2021, 02:52 PM
Replies: 235
Views: 40,636
Posted By akschu
Thanks for the reply. First, I donít live in...

Thanks for the reply.

First, I donít live in Alaska anymore, Iím in central Washington now, but after 25 years there Iíd point out that Alaska is huge. If you split Alaska into two, Texas would be...
Forum: RV-15 08-29-2021, 11:24 AM
Replies: 235
Views: 40,636
Posted By akschu
I would bet that the Rans folk fly their airplane...

I would bet that the Rans folk fly their airplane slower than 130kt, especially if they have anything close to big tires on them. Also, I don't know anybody that actually goes 142kt in a...
Forum: RV-15 08-29-2021, 11:01 AM
Replies: 235
Views: 40,636
Posted By akschu
What kind of speeds were you getting? What fuel...

What kind of speeds were you getting? What fuel burn?
Forum: RV-15 08-29-2021, 11:00 AM
Replies: 235
Views: 40,636
Posted By akschu
That makes tons of sense, thanks for...

That makes tons of sense, thanks for explaining.




That makes sense too. From my perspective it made sense to have a fast airplane that does what they do, and a slow airplane so that you had...
Forum: RV Building Tips/Techniques 08-28-2021, 12:19 AM
Replies: 15
Views: 3,208
Posted By akschu
I want to be like Ron Covell when I grow up. I...

I want to be like Ron Covell when I grow up. I signed up for the metal bash and will be seeing him in Oct. It would be cool if I saw other aviators there. Check his youtube channel for the dates...
Forum: RV General Discussion/News 08-28-2021, 12:17 AM
Replies: 42
Views: 4,763
Posted By akschu
I have a lightspeed zulu, but run the halo. If I...

I have a lightspeed zulu, but run the halo. If I had to buy new today, it'd be CQ.
Forum: ADS-B 08-27-2021, 05:06 PM
Replies: 2
Views: 564
Posted By akschu
Garmin support is saying that you can only update...

Garmin support is saying that you can only update the gdl-50r if you have a g3x, and that the issue is a bug in Gamin pilot where it tries to update a device that isn't supposed to be updated through...
Forum: ADS-B 08-27-2021, 03:42 PM
Replies: 2
Views: 564
Posted By akschu
Garmin GDL-50R won't update firmware

Anyone run into issues with GDL-50R firmware updates? I don't have a g3x so I'm trying to update through Garmin Pilot. The ipad sees the unit just fine, prompts for me to update it, I click go, and...
Forum: Glass Cockpit 08-27-2021, 02:01 PM
Replies: 65
Views: 8,290
Posted By akschu
Lemme try and sneak in a lessons learned before...

Lemme try and sneak in a lessons learned before the thread is closed:

To prospective buyers:

Touch the gear, read the docs, generate your own wiring diagram from the information provided on...
Forum: RV Building Tips/Techniques 08-27-2021, 12:59 PM
Replies: 15
Views: 3,208
Posted By akschu
Ordered! Thanks!

Ordered! Thanks!
Forum: RV-15 08-26-2021, 11:10 AM
Replies: 235
Views: 40,636
Posted By akschu
Sandbar vs Cruise eh? Well, not all sandbars...

Sandbar vs Cruise eh?

Well, not all sandbars are created equal. One man's sip is another man's gulp.

Was he talking about a 100ft sandbar that is reserved for carbon cubs and the like? Or was...
Forum: RV General Discussion/News 08-24-2021, 02:04 PM
Replies: 32
Views: 4,914
Posted By akschu
I just went through this. My research seems to...

I just went through this.

My research seems to indicate that the only one you don't want is a GRT for the following reasons:

Their documentation is significantly lacking.
They don't have a canbus...
Forum: Electrical Systems 08-23-2021, 11:21 AM
Replies: 25
Views: 4,980
Posted By akschu
A permanent magnet alternator that also self...

A permanent magnet alternator that also self excites? Welcome to 2021!

I wonder though, since many of us already have the B&C 8 amp setup, would you be interested in selling your DC/DC controller...
Forum: Electrical Systems 08-19-2021, 12:47 AM
Replies: 185
Views: 19,996
Posted By akschu
I think you missed my point... I'm talking about...

I think you missed my point... I'm talking about compounding risk with one microcontroller depending on another and the fact that EFI and EI vendors that I've seen specifically recommend against...
Forum: Electrical Systems 08-18-2021, 09:39 PM
Replies: 185
Views: 19,996
Posted By akschu
I think this looks reasonable enough to use auto...

I think this looks reasonable enough to use auto fuses and still give me the features of seeing if something failed.
Forum: Electrical Systems 08-18-2021, 05:30 PM
Replies: 185
Views: 19,996
Posted By akschu
I'll toss in my $.02 which won't be worth that by...

I'll toss in my $.02 which won't be worth that by the time others read this:

Most everybody I've seen that uses a microcontroller enabled switchbox wouldn't dream of using this for a fuel injection...
Forum: RV General Discussion/News 08-17-2021, 03:34 PM
Replies: 30
Views: 4,625
Posted By akschu
Just another data point here: Canada eh? doesn't...

Just another data point here:

Canada eh? doesn't honor the basic med stuff. So, if you want to fly to Alaska, you have to maintain a 3rd class medical.

schu
Forum: RV Building Tips/Techniques 08-11-2021, 10:07 PM
Replies: 21
Views: 2,327
Posted By akschu
What are you cutting? I made a vertical mount...

What are you cutting? I made a vertical mount for a port-a-band.

Something like this:

https://www.youtube.com/watch?v=Zdz-YZBFpTk

Then I got a foot switch from amazon that just goes inbetween the...
Forum: RV-15 08-09-2021, 02:58 PM
Replies: 235
Views: 40,636
Posted By akschu
I just flew my 1949 C-170A with 145HP and 80x42...

I just flew my 1949 C-170A with 145HP and 80x42 prop from Wenatchee to Oshkosh. Flying over the Rockies then taking off at gross from Cody, WY at 6900 DA really puts things into perspective. A...
Forum: RV-15 08-09-2021, 01:15 PM
Replies: 235
Views: 40,636
Posted By akschu
I appreciate your reply, I suppose I'm missing...

I appreciate your reply, I suppose I'm missing your point because vans already makes several models that meet your goal of going fast. If what you want to do is already served a number of different...
Forum: RV-15 08-09-2021, 12:48 PM
Replies: 235
Views: 40,636
Posted By akschu
East Coast, those are the key words. You don't...

East Coast, those are the key words. You don't need a backcountry airplane on the east coast because there isn't really any back country.

After spending 25 years in AK, and now in WA I can tell you...
Forum: RV-15 08-09-2021, 12:35 PM
Replies: 235
Views: 40,636
Posted By akschu
I haven't seen those. That's pretty much the...

I haven't seen those. That's pretty much the super 170 I've been talking about, but with an extra 300lbs of gross weight.

I see they are around 1450lbs with 2550 gross which is the same as the 4...
Forum: RV-15 08-06-2021, 10:49 PM
Replies: 235
Views: 40,636
Posted By akschu
Super interesting responses. When I started...

Super interesting responses.

When I started this thread I was just asking if people thought it's going to be a small (rotax), medium (4cyl), or large (6cyl) sized bushplane. I incorrectly ...
Forum: RV General Discussion/News 08-05-2021, 11:58 AM
Replies: 21
Views: 4,687
Posted By akschu
There are a lot of different airplanes and a lot...

There are a lot of different airplanes and a lot of different ways to build airplanes.

All of the airplanes that you mentioned are fast first, then have other features.

The RV-7 is smaller,...
Forum: RV-15 07-28-2021, 05:51 PM
Replies: 235
Views: 40,636
Posted By akschu
Induced drag. Do you want a high lift/slow wing...

Induced drag.

Do you want a high lift/slow wing that lands slow? Or a lower lift/fast wing that lands fast?

If they make something fast that needs 45kts landing speed then Iím sure the RV crowed...
Forum: RV-15 07-28-2021, 09:38 AM
Replies: 235
Views: 40,636
Posted By akschu
A few thoughts: I think the standard 4-cyl...

A few thoughts:

I think the standard 4-cyl lycoming makes the most sense, that way vans can reuse the baffling, engine mount, etc. The nose bowl will probably need to be different to allow cooling...
Forum: RV-15 07-28-2021, 09:30 AM
Replies: 235
Views: 40,636
Posted By akschu
Hahahahaha

Hahahahaha
Forum: RV-15 07-27-2021, 05:14 AM
Replies: 235
Views: 40,636
Posted By akschu
What class of bushcraft do you think they are working on?

Iím sure they have a size/weight of engine picked out. Do you think itís a:

Light 2 seat like a kit fox or rans s-21? Something in the 800-900lb range with 100+ hp?

Perhaps a 2+2 setup like a...
Forum: My RV Build Project 07-19-2021, 01:53 PM
Replies: 45
Views: 11,025
Posted By akschu
I have over 400 hours of tailwheel time on my 170...

I have over 400 hours of tailwheel time on my 170 and have 180 and cub time as well. Now that the little wheel no longer scares me, I much prefer it because it's so much stronger and I can land the...
Forum: ADS-B 06-23-2021, 12:33 PM
Replies: 2
Views: 1,005
Posted By akschu
I spotted this in the garmin manual on page...

I spotted this in the garmin manual on page 165:

"Traffic within 250 feet laterally of the aircraft will not be displayed."

That should do the trick. Anyone confirm?
Forum: ADS-B 06-23-2021, 12:12 PM
Replies: 2
Views: 1,005
Posted By akschu
Anonymous mode shadow.

Hello All,

I use ADS-b in anonymous mode. I like privacy. For my ads-b in solution I currently use a stratux and FlyQ. It of course sees ownship, but because ownship is anonymous I can't filter...
Forum: Safety 06-03-2021, 10:49 AM
Replies: 33
Views: 3,261
Posted By akschu
A few comments. The first time I flew glass it...

A few comments.

The first time I flew glass it was odd feeling, but at the end of the day I knew how to fly the airplane and recognize what it was doing so I had some margin there. I don't think...
Forum: RV General Discussion/News 05-22-2021, 05:52 AM
Replies: 81
Views: 18,491
Posted By akschu
Just like everything else in life there are...

Just like everything else in life there are different ideas about how to do things and there are consequences.

For me, AV gas is $2 a gallon more at the airport, but $1 a gallon more at an off...
Forum: Glass Cockpit 05-14-2021, 05:49 PM
Replies: 30
Views: 3,702
Posted By akschu
In that case you can further experiment by having...

In that case you can further experiment by having the G3X GAD, and the VPX, and the auto pilot, and the buttons, and the buttons on the other side control it. Heck, add in a few fuses and breakers,...
Forum: RV General Discussion/News 04-28-2021, 01:57 PM
Replies: 12
Views: 3,419
Posted By akschu
I’d draw it in cad, print it out on my printer,...

I’d draw it in cad, print it out on my printer, then confirm the dimensions and shape. Once I knew I had a good drawing, I’d shim with washers to confirm thickness as the other poster suggested,...
Forum: ADS-B 04-27-2021, 04:06 PM
Replies: 11
Views: 2,505
Posted By akschu
Serial connection also allows for true anonymous...

Serial connection also allows for true anonymous mode since we arenít broadcasting the tail number over ads-b while waiting for an interrogation. Instead, with serial, we know we are squawking 1200...
Forum: Alternative Engines 04-26-2021, 09:10 AM
Replies: 34
Views: 5,746
Posted By akschu
Any time you go to an auto conversion vendor...

Any time you go to an auto conversion vendor website and they show cad drawings or bare engines, be very afraid. You want to see engines cowled up in flying airplanes. Lot and lots of them.
Forum: RV General Discussion/News 04-15-2021, 11:06 AM
Replies: 24
Views: 4,898
Posted By akschu
Yea, that's called a C-170B, and you can get them...

Yea, that's called a C-170B, and you can get them with an io-370 from Stoots.

Great airplane, except for the 2200lb gross.
Showing results 1 to 64 of 352

 
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