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Search: Posts Made By: BobTurner
Forum: Glass Cockpit Yesterday, 03:47 PM
Replies: 14
Views: 732
Posted By BobTurner
I don't know the answer. In an emergency you...

I don't know the answer. In an emergency you certainly don't want to have to go into the 430 set up menu! I'd have to read the manual (who does that?!!) to see what the 430 does if there is redundant...
Forum: RV General Discussion/News Yesterday, 03:37 PM
Replies: 6
Views: 579
Posted By BobTurner
To all, and Leah: As noted, using your EAB...

To all, and Leah:
As noted, using your EAB airplane to give flight instruction, for hire, to others (not owners/named insured) is not covered nor is it allowed by the FAA. However the FAA will waive...
Forum: Glass Cockpit 02-24-2021, 11:33 PM
Replies: 14
Views: 732
Posted By BobTurner
One ‘in’ can only see one ‘out’, or there will be...

One ‘in’ can only see one ‘out’, or there will be gross confusion. Just hook up out from the main efis to the navigator’s ‘in’; nothing out of the standby efis to the navigator. If you lose the...
Forum: Glass Cockpit 02-24-2021, 09:27 PM
Replies: 14
Views: 732
Posted By BobTurner
Just like rs232, one ‘out’ can power several...

Just like rs232, one ‘out’ can power several ‘ins’, as long as both ins can read the format that’s sent.
Forum: Glass Cockpit 02-24-2021, 08:12 PM
Replies: 14
Views: 732
Posted By BobTurner
You really mean "sort of independence". You're...

You really mean "sort of independence". You're hoping no sort of crazy software error can propagate over the baro setting link. Or the software update link.

I went with RocketBob's approach:...
Forum: RV General Discussion/News 02-24-2021, 08:00 PM
Replies: 18
Views: 1,016
Posted By BobTurner
Just to echo the others....build because you like...

Just to echo the others....build because you like that kind of work (Vans sells/recommends starting with the tail kit, precisely so that those who decide building isn't for them don't lose too much...
Forum: Glass Cockpit 02-23-2021, 06:16 PM
Replies: 14
Views: 732
Posted By BobTurner
You can do a search, and find many debates about...

You can do a search, and find many debates about whether a true back-up device should be (1) integrated with everything else, or (2) isolated from everything else, standing alone. There are pluses...
Forum: RV General Discussion/News 02-23-2021, 02:58 PM
Replies: 19
Views: 861
Posted By BobTurner
Here in CA that doesn’t work. The state sends...

Here in CA that doesn’t work. The state sends inspectors around to airports, writing down N numbers, and if they determine that you have a ‘continuous presence’ (whatever that means) they send a tax...
Forum: GPS 02-23-2021, 02:43 PM
Replies: 9
Views: 1,455
Posted By BobTurner
Just speaking in generalities - the gps navigator...

Just speaking in generalities - the gps navigator will generally work without any data input from the efis, but you lose some functionality. For example, the navigator needs heading and airspeed data...
Forum: Autopilots 02-22-2021, 08:00 PM
Replies: 10
Views: 384
Posted By BobTurner
One function of such a button(s) is to disengage...

One function of such a button(s) is to disengage the autopilot, possibly as low as 200’ agl; or in an emergency, such as a run-away. For this, one button is easier and quicker than two. Of course the...
Forum: GPS 02-21-2021, 02:18 PM
Replies: 4
Views: 238
Posted By BobTurner
Inside the 400W is a small battery, that powers...

Inside the 400W is a small battery, that powers memory that remembers your last location. If that’s lost, the box has to search for the very weak signals, that takes time. If the battery is more than...
Forum: Glass Cockpit 02-21-2021, 01:16 AM
Replies: 13
Views: 532
Posted By BobTurner
If you fly in IMC with only one screen, no...

If you fly in IMC with only one screen, no backups, then yes, you are rolling the dice. With whatever brand efis you might have.
Forum: RV General Discussion/News 02-21-2021, 12:17 AM
Replies: 17
Views: 896
Posted By BobTurner
Mostly the hull insurance. Even high time pilots...

Mostly the hull insurance. Even high time pilots will pay a significant premium until they have 100 or so hours time in type. Liability is not too expensive because coverage is minimal, typically...
Forum: RV General Discussion/News 02-20-2021, 10:16 PM
Replies: 17
Views: 896
Posted By BobTurner
When it comes to pre-buy inspections, Vic...

When it comes to pre-buy inspections, Vic Syracuse (search here on VAF) in the Atlanta area comes highly recommended. But first: google Gallagher Associates (or search VAF for Leah Ringeisen) and...
Forum: GPS 02-19-2021, 03:12 PM
Replies: 64
Views: 3,309
Posted By BobTurner
The more modern systems use looking at multiple...

The more modern systems use looking at multiple solutions, instead of RAIM, to assure ‘integrity’. 4 satellites gets you a solution; 6 or more gets you ‘integrity’.
Forum: Traditional Aircraft Engines 02-17-2021, 03:07 PM
Replies: 7
Views: 741
Posted By BobTurner
You just have to find the right manual. I found...

You just have to find the right manual. I found it online.
Forum: Traditional Aircraft Engines 02-17-2021, 12:37 AM
Replies: 7
Views: 741
Posted By BobTurner
+1. On standard harnesses the cylinder/plug is...

+1. On standard harnesses the cylinder/plug is stamped on the nut.
Starting at your red ‘1’ and moving to lower right (counterclockwise) the order is 1T - 3T - 2B - 4B where the T is top and the B is...
Forum: RV Ongoing Maintenance Issues 02-15-2021, 11:45 PM
Replies: 18
Views: 960
Posted By BobTurner
1. If your cylinders were matched to get peak egt...

1. If your cylinders were matched to get peak egt all at the same time (by making small changes in the injector sizes) I hope you know which cylinder they each came from.
2. If they weren’t adjusted...
Forum: RV General Discussion/News 02-15-2021, 08:08 PM
Replies: 12
Views: 748
Posted By BobTurner
Different subject, same issue: aluminum oxygen...

Different subject, same issue: aluminum oxygen tanks need to be pressure tested every 5 years. I've seen some for sale with 30% of that 'lifetime' already gone. And some on the internet that are...
Forum: ADS-B 02-15-2021, 07:55 PM
Replies: 17
Views: 642
Posted By BobTurner
Since we're grasping at straws here.... Since the...

Since we're grasping at straws here....
Since the GTX335 is very close to the GDL 52R, I'd look at the coax and connector exiting the GTX335. Also check the grounding of the shield to the connector,...
Forum: ADS-B 02-15-2021, 07:40 PM
Replies: 6
Views: 343
Posted By BobTurner
+1 on Mike's post All you need for ADSB-out is...

+1 on Mike's post
All you need for ADSB-out is the GRT safe-fly gps. The TT-22 is a mode S-ES transponder. And the Safe-fly will serve as a position source for the GRT EFIS at the same time.

Not...
Forum: Instrument Flight Rules 02-15-2021, 01:35 PM
Replies: 2
Views: 427
Posted By BobTurner
Answer is yes. 1. Select your nav (ILS) as...

Answer is yes.
1. Select your nav (ILS) as primary data source for your HSI
2. Select gps as secondary source. GPS data will be displayed as an RMI needle superimposed on the HSI, pointing to the gps...
Forum: Glass Cockpit 02-15-2021, 01:11 PM
Replies: 6
Views: 558
Posted By BobTurner
1. You said upgrade to HS but I presume you meant...

1. You said upgrade to HS but I presume you meant EX.
2. I have an Hx but presume the EX is similar. I also have a Trio Pro, and the Hx integrates perfectly with it.
3. Quite honestly I ignore the...
Forum: RV Building Tips/Techniques 02-15-2021, 12:48 PM
Replies: 31
Views: 3,454
Posted By BobTurner
It is exactly as Paul said above. The builder...

It is exactly as Paul said above. The builder signs a statement thar he built the airplane for his own recreation or education. If that is true, no problem. If it is not true, then the faa has the...
Forum: RV-7/7A 02-14-2021, 10:41 PM
Replies: 38
Views: 8,501
Posted By BobTurner
If you were really flying perfectly you’d notice...

If you were really flying perfectly you’d notice that you were 13’ off the centerline - your wingtip would be on it! -:)

As a cfii I miss NDB approaches. Not that they were that great. But if an...
Forum: ADS-B 02-14-2021, 08:17 PM
Replies: 17
Views: 642
Posted By BobTurner
Somewhere in your Aera set up, or GDL, or both,...

Somewhere in your Aera set up, or GDL, or both, is there a place to enter your N number and/or your hexadecimal ICAO address? Make sure that's set up correctly. A ground station may be sending your...
Forum: RV-10 02-14-2021, 08:07 PM
Replies: 43
Views: 4,105
Posted By BobTurner
By far the cheapest option is ....... just fly...

By far the cheapest option is ....... just fly slower. With flow-matched injectors, I typically fly full throttle at 9.5 or 10.5K', leaned out to a bit less than 10 gal/hr. Sure just 160 KTAS, but 5...
Forum: Glass Cockpit 02-14-2021, 07:34 PM
Replies: 14
Views: 548
Posted By BobTurner
I forget the exact name/format, but to transmit...

I forget the exact name/format, but to transmit digital nav data to the EFIS I think the SL30 setting is called "EFIS". I remember there were a couple of options and they did slightly different...
Forum: Safety 02-14-2021, 12:52 AM
Replies: 46
Views: 2,723
Posted By BobTurner
I’m in the ‘open throttle= less drag’ camp. I...

I’m in the ‘open throttle= less drag’ camp. I agree, power and compression strokes cancel. It’s intake and exhaust strokes that matter. Open throttle we have 1 at. coming in on the intake stroke,...
Forum: RV General Discussion/News 02-13-2021, 04:05 PM
Replies: 24
Views: 1,544
Posted By BobTurner
Not Gallagher-they are a broker, not the insurer-...

Not Gallagher-they are a broker, not the insurer- but one of the companies they represent, did state in the policy a (low) hourly rate they would pay if you chose to do a covered repair yourself. I...
Forum: Texas (North) 02-12-2021, 07:57 PM
Replies: 2
Views: 204
Posted By BobTurner
1. Get a tailwheel endorsement in a normally...

1. Get a tailwheel endorsement in a normally certified airplane from your nearest FBO that offers it.
2. Check with insurance company, see if RV7 is okay for training. Then find someone with a 6 or 7...
Forum: GPS 02-12-2021, 01:25 PM
Replies: 4
Views: 499
Posted By BobTurner
Many installers route the autopilot arinc lines...

Many installers route the autopilot arinc lines thru a double pole double throw switch, selecting sending the arinc lines to either the efis or the gps. If gps is selected, you control the autopilot...
Forum: RV-10 02-12-2021, 01:16 AM
Replies: 11
Views: 864
Posted By BobTurner
2. Remember you want/need to keep the moment aft...

2. Remember you want/need to keep the moment aft of the hinge as small as possible. If nothing else run the conduit as far forward as possible.
Forum: Safety 02-11-2021, 08:14 PM
Replies: 46
Views: 2,723
Posted By BobTurner
not quite

First line above is bad physics; comparing power (energy/sec) with drag (which is a force).
If you graph "power required for level flight", you will get a distorted U shaped curve. The minimum of...
Forum: Safety 02-11-2021, 07:20 PM
Replies: 46
Views: 2,723
Posted By BobTurner
No. (unless something inside is broken!). In...

No. (unless something inside is broken!). In operation oil pressure moves the blades to more coarse. Lack of oil pressure allows the blades to move back to fine pitch with no additional help.
Forum: Safety 02-11-2021, 06:33 PM
Replies: 46
Views: 2,723
Posted By BobTurner
This is sort of a trick question. If you have the...

This is sort of a trick question. If you have the usual CS prop for a single, it will go to fine pitch if oil pressure is lost. But best glide will be for coarse pitch. So....if following engine...
Forum: Glass Cockpit 02-10-2021, 06:05 PM
Replies: 2
Views: 171
Posted By BobTurner
I suggest you look...

I suggest you look here:

https://grtavionics.com/media/Horizon-430W.pdf

This is for a G430 so for the newer GTNs the PIN numbers may have changed but the functions are the same (RS232 connections,...
Forum: ADS-B 02-10-2021, 05:34 PM
Replies: 2
Views: 178
Posted By BobTurner
Step 1. Hold down the secret key while you boot...

Step 1. Hold down the secret key while you boot up the 430W, to see the hidden menu. Scroll to the RS232-out ports, see if format "ADSB+" is available (must have the "+". If the 'adsb+' format is not...
Forum: GPS 02-10-2021, 12:56 PM
Replies: 8
Views: 360
Posted By BobTurner
Actually, you don’t know yet if you’re lucky or...

Actually, you don’t know yet if you’re lucky or not. The tests mentioned do not and cannot duplicate marginal or worst case scenarios.
Forum: GPS 02-09-2021, 11:50 PM
Replies: 8
Views: 360
Posted By BobTurner
The reason for the minimum length is not...

The reason for the minimum length is not insufficient GPS signal. It’s to meet the spec on rejection of interfering signals on certain frequencies. You won’t know if your short cable was the best...
Forum: Safety 02-09-2021, 04:25 PM
Replies: 46
Views: 2,723
Posted By BobTurner
Steve, isn’t this backwards? Throttle closed the...

Steve, isn’t this backwards? Throttle closed the engine needs to do work on the intake stroke against the low intake pressure? Let me think some more.
Forum: Autopilots 02-09-2021, 01:16 PM
Replies: 13
Views: 1,213
Posted By BobTurner
The servo acts directly on the elevator; the trim...

The servo acts directly on the elevator; the trim motor on the trim tab. The ‘autotrim’ sends electrical power to the trim motor, whether it’s made by Ray Allen or anyone.
Forum: Safety 02-09-2021, 12:49 PM
Replies: 46
Views: 2,723
Posted By BobTurner
Just a couple of thoughts. 1. Vy is usually...

Just a couple of thoughts.
1. Vy is usually greater than Vbg, due to the non-ideal prop. Most of us use ‘cruise’ props (even if CS, the blade twist is optimized for cruise) which pushes Vy higher...
Forum: Engine Monitors 02-08-2021, 11:02 PM
Replies: 4
Views: 557
Posted By BobTurner
Because all the probes have some ‘thermal...

Because all the probes have some ‘thermal inertia’, their outputs are nearly dc signals. It’s easy to design thermocouple amplifiers that reject ac signals.
Edit. Also, just keeping the two wires...
Forum: GPS 02-08-2021, 07:27 PM
Replies: 64
Views: 3,309
Posted By BobTurner
Notice the circle with the line thru it, like a U...

Notice the circle with the line thru it, like a U turn sign with a line thru it, meaning "No U turn". Circle with a line thru it means "Not allowed here".
Forum: GPS 02-08-2021, 06:52 PM
Replies: 64
Views: 3,309
Posted By BobTurner
Below is a direct quote from the 'Garmin GPS175...

Below is a direct quote from the 'Garmin GPS175 Maintenance manual with instructions for continued airworthiness, STC.....'
(I can't see the installation manual since Garmin won't publish...
Forum: GPS 02-08-2021, 06:08 PM
Replies: 64
Views: 3,309
Posted By BobTurner
Since you (the OP) are in Canada you may wish to...

Since you (the OP) are in Canada you may wish to check with Transport Canada. I know some of your IFR rules are different than the US's, e.g., 2 separate navigation boxes. If TC says you must...
Forum: Traditional Aircraft Engines 02-07-2021, 02:30 PM
Replies: 23
Views: 974
Posted By BobTurner
I’d suggest caution with a blanket statement like...

I’d suggest caution with a blanket statement like that. Many aircraft engines are set up to run overly rich at 100% power, to provide detonation margin.
Forum: Glass Cockpit 02-06-2021, 08:25 PM
Replies: 15
Views: 749
Posted By BobTurner
No switches needed. One ARINC-in pair can only...

No switches needed. One ARINC-in pair can only receive signals from one ARINC-out A/B pair, otherwise there is confusion. But one ARINC-out A/B pair can go to multiple ARINC-in ports.
So: splice 2...
Forum: COMM 02-06-2021, 02:08 AM
Replies: 4
Views: 307
Posted By BobTurner
Send me a PM with your email address and I’ll...

Send me a PM with your email address and I’ll send several suggestions for how to do this.
Forum: Glass Cockpit 02-06-2021, 01:31 AM
Replies: 15
Views: 749
Posted By BobTurner
Just to clarify: the new grt 10.1 efis units do...

Just to clarify: the new grt 10.1 efis units do not have a built in ARINC port (older HXr and Hx efis units do have arinc ports), so you need their external arinc box. The external arinc box...
Forum: Glass Cockpit 02-05-2021, 01:19 PM
Replies: 7
Views: 329
Posted By BobTurner
BTW, Stein also sells an inexpensive razor blade...

BTW, Stein also sells an inexpensive razor blade cutter that does a nice job of making clean, square cuts of the vinyl tubing.
Forum: COMM 02-05-2021, 12:44 AM
Replies: 4
Views: 307
Posted By BobTurner
The diagram you show is 20 years old, and...

The diagram you show is 20 years old, and pre-dates com radios with built in intercoms. The GTR 200 has separate mike inputs for pilot and copilot. However, the GTR was really designed for airplanes...
Forum: Glass Cockpit 02-05-2021, 12:19 AM
Replies: 15
Views: 749
Posted By BobTurner
Yes, people are flying the grt efis-Garmin 175...

Yes, people are flying the grt efis-Garmin 175 combo.
If your efis does not have arinc ports you will need to buy grt’s add-on arinc box.
There are recommendations on ports, formats, etc, found in...
Forum: RV-8/8A 02-04-2021, 11:46 PM
Replies: 11
Views: 1,005
Posted By BobTurner
Apples and oranges. 375 is gps + transponder....

Apples and oranges. 375 is gps + transponder. 650/750 is gps + nav-com.
Forum: RV-10 02-04-2021, 04:07 PM
Replies: 44
Views: 12,201
Posted By BobTurner
I have a -10, no aileron trim. When I hand fly in...

I have a -10, no aileron trim.
When I hand fly in vfr, I don’t miss it.
When the TrioPro flies, I don’t need it.
When I hand fly in actual IMC, I wish I had it.
So if I were building again, I’d...
Forum: ADS-B 02-04-2021, 04:04 PM
Replies: 16
Views: 4,473
Posted By BobTurner
Does Australia allow/support ADSB-out on 978 MHz?...

Does Australia allow/support ADSB-out on 978 MHz? I thought that was just US. All the boxes you quote are 978 MHz.
Forum: Glass Cockpit 02-04-2021, 03:47 PM
Replies: 7
Views: 329
Posted By BobTurner
Hi Jim, I mail-ordered pitot-static tubing and...

Hi Jim,
I mail-ordered pitot-static tubing and hardware from Stein (SteinAir, look for his ad on this forum). Make sure you know the diameter of the existing tubing.
Yes, strictly speaking, a new...
Forum: RV-10 02-04-2021, 03:20 PM
Replies: 4
Views: 348
Posted By BobTurner
Unfortunately my paperwork is at the hangar. But...

Unfortunately my paperwork is at the hangar. But I was able to find a replacement (I forget where) that not only fit without modification, but also incorporated a small amount of dampening for the...
Forum: Flight Testing 02-04-2021, 02:47 PM
Replies: 60
Views: 3,986
Posted By BobTurner
It’s worse than that. The ‘additional pilot...

It’s worse than that. The ‘additional pilot program’ makes no provision for pilot training. Now, some is bound to happen, but as a cfi I would not sign off anything as ‘dual instruction’ during phase...
Forum: COMM 02-04-2021, 02:24 PM
Replies: 2
Views: 176
Posted By BobTurner
It goes to the wire labeled ‘blue’ coming off the...

It goes to the wire labeled ‘blue’ coming off the mike jack, e.g., the one that goes to the tip of the mike plug.
Forum: RV General Discussion/News 02-03-2021, 10:19 PM
Replies: 23
Views: 1,311
Posted By BobTurner
I’m sure I spent at least 500 hours either...

I’m sure I spent at least 500 hours either waiving my hands in the air, or asking the dog for advice. -:)
Forum: RV-14 02-03-2021, 12:44 PM
Replies: 15
Views: 1,179
Posted By BobTurner
There is a huge variation in builders’ abilities...

There is a huge variation in builders’ abilities and speed. Going fast and not making mistakes (which slows you down) tends to require a good, experienced builder. If you are new to this I’d guess...
Forum: RV-10 02-03-2021, 11:53 AM
Replies: 17
Views: 1,255
Posted By BobTurner
Since you list your address as CA and CA has a...

Since you list your address as CA and CA has a ‘sales or use’ tax, there are no tax savings.
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