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Search: Posts Made By: BobTurner
Forum: RV-14 Today, 08:28 PM
Replies: 2
Views: 90
Posted By BobTurner
The usual recommendation is to hold off on...

The usual recommendation is to hold off on avionics for as long as possible, as they change faster than anything else. You don't want to have your first flight happen, and wish your avionics weren't...
Forum: Glass Cockpit Today, 03:23 PM
Replies: 6
Views: 1,589
Posted By BobTurner
Actually, I have an HX. I used to have an HS, so...

Actually, I have an HX. I used to have an HS, so I assumed the 10.1 is at least as good as the Hx (but I understand, one should never assume). There are several threads about this, and the G175, on...
Forum: Propellers Today, 03:04 PM
Replies: 8
Views: 695
Posted By BobTurner
I am by no means an expert, but I would try to...

I am by no means an expert, but I would try to drill and tap the hole for a left handed thread (use lots of grease on the tools to try to capture all chips). Insert a left handed bolt coated with...
Forum: RV General Discussion/News Today, 02:50 PM
Replies: 15
Views: 793
Posted By BobTurner
No. To be current to carry passengers at night,...

No. To be current to carry passengers at night, you must have logged 3 landings to a FULL stop, at night, in the last 90 days. Any SEL airplane. But if it’s a tailwheel airplane, you must have also...
Forum: COMM Yesterday, 10:38 PM
Replies: 9
Views: 354
Posted By BobTurner
Crummy SWR doesn’t just mean less power to the...

Crummy SWR doesn’t just mean less power to the antenna. It also means significant power flowing back into the transmitter, where it creates all sorts of trouble.
Forum: RV-10 02-16-2020, 07:23 PM
Replies: 5
Views: 858
Posted By BobTurner
I’ve experimented with -3 vs in trail, in cruise,...

I’ve experimented with -3 vs in trail, in cruise, at mid-weight, 16,500’ DA. I couldn’t see any difference. I presume that at even higher density altitudes, in trail might be a bit faster.
As to the...
Forum: Glass Cockpit 02-16-2020, 06:55 PM
Replies: 6
Views: 1,589
Posted By BobTurner
If you liked the HS, you’ll love the new Horizon...

If you liked the HS, you’ll love the new Horizon 10.1. Better screen resolution, synthetic vision, etc. IMHO looking at U-tube videos is the worst way to make a buying decision, but to each his own.
Forum: Traditional Aircraft Engines 02-16-2020, 06:37 PM
Replies: 11
Views: 653
Posted By BobTurner
You will also want a ‘Parts Manual’.

You will also want a ‘Parts Manual’.
Forum: COMM 02-16-2020, 05:15 PM
Replies: 9
Views: 354
Posted By BobTurner
Agree with Ken. On receive, nearly anything (coat...

Agree with Ken. On receive, nearly anything (coat hangar) works for an antenna. Transmit is a lot fussier. Specifically, look for good connections where the coax shield is attached to the connector,...
Forum: Glass Cockpit 02-16-2020, 05:01 PM
Replies: 5
Views: 177
Posted By BobTurner
If you bought stuff from Stein he will send along...

If you bought stuff from Stein he will send along a wiring diagram - just ask.
Make sure you know how to set up the SL30 and G3X so it will show an ILS and a VOR cross fix at the same time. To the...
Forum: RV General Discussion/News 02-16-2020, 04:33 PM
Replies: 24
Views: 1,032
Posted By BobTurner
My observation is that the outside radius does...

My observation is that the outside radius does have a small amount of stretching/flatening. But the inside radius is slightly compressed/flattened as well. They seem to average out!
Forum: RV General Discussion/News 02-16-2020, 04:24 PM
Replies: 24
Views: 1,032
Posted By BobTurner
When it comes to bending 90 deg, my bending tool...

When it comes to bending 90 deg, my bending tool came with very explicit instructions for initial length vs final (up-right) lengths. Or, you could do the math.
Forum: RV-14 02-15-2020, 06:09 PM
Replies: 10
Views: 621
Posted By BobTurner
That is what I did. plus, made sure the wingtip...

That is what I did. plus, made sure the wingtip attach screws had no paint between the screws and the aluminum wing. Others have attached an aluminum angle to the rib, and the antenna to the angle....
Forum: RV-14 02-15-2020, 12:11 AM
Replies: 15
Views: 965
Posted By BobTurner
Just to be clear, a dipole for 113 MHz consists...

Just to be clear, a dipole for 113 MHz consists of two center fed radiating elements, each of which is 25”.
Forum: RV-14 02-14-2020, 08:11 PM
Replies: 15
Views: 965
Posted By BobTurner
Neither the heat controller nor the servo should...

Neither the heat controller nor the servo should generate appreciable radio frequency interference.
Forum: RV-14 02-14-2020, 02:21 PM
Replies: 15
Views: 965
Posted By BobTurner
This just illustrates what Don said, above: with...

This just illustrates what Don said, above: with a 40 watt gs transmitter 5 miles away, almost anything, including a coat hangar, will work. A ‘proper’ half wave dipole for GS will have 9” of...
Forum: RV-14 02-13-2020, 01:28 AM
Replies: 15
Views: 965
Posted By BobTurner
As Don said, antennas that are resonant at...

As Don said, antennas that are resonant at half-wavelength are also resonant at 3/2, 5/2, etc., wavelengths, so they work well at 330 MHz. The 50 ohm matching network may be off a bit, but, as Don...
Forum: RV General Discussion/News 02-12-2020, 12:41 AM
Replies: 2
Views: 305
Posted By BobTurner
I have never heard this, nor has the insurance...

I have never heard this, nor has the insurance company ever asked of it was a slow or fast build kit.
Forum: RV General Discussion/News 02-10-2020, 02:09 PM
Replies: 55
Views: 3,033
Posted By BobTurner
You sound like you’ve got a realistic grasp on...

You sound like you’ve got a realistic grasp on the chalkenges, so just a few comments.
1. Look carefully at the 9’s weight and balance. Vans has numbers on their web site, but many planes come in...
Forum: ADS-B 02-10-2020, 01:32 PM
Replies: 6
Views: 313
Posted By BobTurner
I’m not familiar with the G3X but most efis units...

I’m not familiar with the G3X but most efis units have a page where they show the number of adsb ground stations they’re in contact with. If that number is ‘0’ then, as others said, you won’t see wx...
Forum: RV-8/8A 02-09-2020, 03:56 PM
Replies: 14
Views: 1,098
Posted By BobTurner
Mirror images

Congratulations!
I thought I was becoming dyslexic. My RV is N48HT (!)
Forum: ADS-B 02-09-2020, 10:59 AM
Replies: 8
Views: 199
Posted By BobTurner
The HXr will pass altitude data to the trig, for...

The HXr will pass altitude data to the trig, for both transponder and adsb, one wire. But you need to configure it to do so. Sounded like you had it configured to use the ack encoder.
With regard to...
Forum: RV-10 02-09-2020, 01:22 AM
Replies: 17
Views: 1,513
Posted By BobTurner
+1. This is the correct explanation. A simple...

+1. This is the correct explanation. A simple test for small induction leaks is to run full rich, wide open throttle, observe EGTs. Smoothly retard throttle to idle. If any cylinder shows an egt...
Forum: ADS-B 02-09-2020, 01:11 AM
Replies: 8
Views: 199
Posted By BobTurner
The 2 in the skyradar D2 stands for two...

The 2 in the skyradar D2 stands for two frequencies, 978 and 1099 MHz. The latter is the transponder frequency. All traffic that’s available, it will get it. The TIS traffic from the transponder is...
Forum: RV General Discussion/News 02-08-2020, 09:14 PM
Replies: 11
Views: 1,150
Posted By BobTurner
I put the work in after the work is done. I put...

I put the work in after the work is done. I put the test flight in after the test flight. But you can do whatever you want. As an EAB you’re not legally obligated to record any work done, other than...
Forum: RV General Discussion/News 02-08-2020, 01:50 PM
Replies: 6
Views: 257
Posted By BobTurner
I have an iPad with WingX, and see the same...

I have an iPad with WingX, and see the same thing. It magically connects to a data source for adsb-in wx, either wifi or cellular, when away from the airplane.
Forum: ADS-B 02-08-2020, 01:44 PM
Replies: 8
Views: 199
Posted By BobTurner
Okay, forgive me if I’m wrong, but you sound...

Okay, forgive me if I’m wrong, but you sound confused. This equipment can get you ADSB-out, which is all you need to be legal, but it will not get you ADSB-in traffic and weather. I have a GRT HX,...
Forum: RV-10 02-08-2020, 12:06 AM
Replies: 17
Views: 1,513
Posted By BobTurner
Did you sump the tanks prior to takeoff?

Did you sump the tanks prior to takeoff?
Forum: Instrument Flight Rules 02-07-2020, 06:39 PM
Replies: 16
Views: 1,487
Posted By BobTurner
I know one guy who had his charts on an iPad. Day...

I know one guy who had his charts on an iPad. Day of his check ride was hot, and half way thru his iPad overheated and quit. He was able to fish some paper charts out of his flight bag and finish.
Forum: Instrument Flight Rules 02-07-2020, 12:40 AM
Replies: 16
Views: 1,487
Posted By BobTurner
You’re all set. Velcro the portable nav to the...

You’re all set. Velcro the portable nav to the panel, call it installed, be ready to shoot a vor approach with it. Problems solved.
Forum: Instrument Flight Rules 02-06-2020, 04:52 PM
Replies: 16
Views: 1,487
Posted By BobTurner
Dan, I know you asked specifically about the...

Dan,
I know you asked specifically about the check ride. But the question extends to actual operation in IMC. How many backups, if any, are enough? You'll get answers to that question ranging from...
Forum: Instrument Flight Rules 02-06-2020, 04:44 PM
Replies: 16
Views: 1,487
Posted By BobTurner
I think everyone agrees with that, as does the...

I think everyone agrees with that, as does the ACS. The issue is the "two different non-precision" approaches. What did he have you do for those?
Forum: RV General Discussion/News 02-05-2020, 07:32 PM
Replies: 32
Views: 3,168
Posted By BobTurner
I have no idea about cause and effect, but since...

I have no idea about cause and effect, but since you just had the fuel tank out, I’d look hard at any connections that were undone.
Forum: Instrument Flight Rules 02-05-2020, 05:34 PM
Replies: 16
Views: 1,487
Posted By BobTurner
Task A. Nonprecision Approach The evaluator will...

Task A. Nonprecision Approach
The evaluator will select nonprecision approaches representative of the type that the applicant is likely to use. The choices must use at least two different types of...
Forum: Instrument Flight Rules 02-05-2020, 04:45 PM
Replies: 16
Views: 1,487
Posted By BobTurner
My reading of the rules, as found in the preface...

My reading of the rules, as found in the preface to the former PTS, now ACS, is ‘no’. This preface says the examiner is to choose ‘3 different types of approaches’, then lists the acceptable ones....
Forum: VAF Classifieds (posts in here deleted after 30 days) 02-04-2020, 04:04 PM
Replies: 1
Views: 209
Posted By BobTurner
Don’t sell yourself short! This box can also...

Don’t sell yourself short! This box can also communicate to a GRT HX via USB, so it’s not just for portables. And the gps data goes over the usb connection as well, giving you a backup for that. And...
Forum: RV General Discussion/News 02-04-2020, 03:47 PM
Replies: 15
Views: 1,321
Posted By BobTurner
....and, watch out for the bottom line. Once upon...

....and, watch out for the bottom line. Once upon a time, they just charged an advertised rate. Now, they advertise a ‘subscription’ cost, then add in fees that are really THEIR overhead, like ‘Music...
Forum: RV General Discussion/News 02-02-2020, 04:59 PM
Replies: 13
Views: 1,393
Posted By BobTurner
I ordered a SlickStart module from Vans. What...

I ordered a SlickStart module from Vans. What arrived was a factory-refurbished unit, yellow tag and all. I called. They apologized profusely for the mix-up, and offered me two options: keep the...
Forum: Autopilots 02-02-2020, 03:29 PM
Replies: 28
Views: 861
Posted By BobTurner
I can’t see the photo in post #25. You need some...

I can’t see the photo in post #25.
You need some care here. The Archer is not a dipole, but a quarter wave over a ground plane. In theory its impedance is half that of a dipole, so if you throw in an...
Forum: COMM 02-01-2020, 11:32 PM
Replies: 64
Views: 24,283
Posted By BobTurner
I see a lot of effort going toward a non-problem....

I see a lot of effort going toward a non-problem. Just use the appropriate splitter off the vor/loc antenna. Because the GS is exactly 3 times higher frequency than the localizer frequencies, an...
Forum: RV-12/RV-12iS 02-01-2020, 10:36 PM
Replies: 31
Views: 2,811
Posted By BobTurner
Why guess? Get a straw, put your finger over the...

Why guess? Get a straw, put your finger over the end, stick it to into the sampler, remove the finger, put it back, remove the clear fluid, empty into a test tube. Put a thermometer into the tube,...
Forum: RV-12/RV-12iS 02-01-2020, 09:15 PM
Replies: 20
Views: 1,953
Posted By BobTurner
Think of this as an experiment, and save the...

Think of this as an experiment, and save the parts. You may be disappointed in the performance degradation. Unlike the fairings on, say, an old 172, Vans fairings actually work.
Forum: Autopilots 02-01-2020, 01:00 AM
Replies: 28
Views: 861
Posted By BobTurner
I think the dimension is more like 9”. Another...

I think the dimension is more like 9”.
Another option: just copy the GS antenna high up on the windscreen in a lot of 1970’s era Cessnas.
Forum: Autopilots 01-31-2020, 01:12 PM
Replies: 28
Views: 861
Posted By BobTurner
Since this thread started with wingtip antennas:...

Since this thread started with wingtip antennas: I have seen a photo of an Archer antenna that was installed with the radiating element (the actual antenna) riveted to the end rib, with the ground...
Forum: Glass Cockpit 01-31-2020, 01:03 PM
Replies: 11
Views: 498
Posted By BobTurner
As other-Bob said, the answer is no. All of these...

As other-Bob said, the answer is no. All of these autopilots (trio, TruTrak) are fully digital, and cannot accept analog outputs from ils or vor receivers. When you run ils or vor signals thru an...
Forum: RV General Discussion/News 01-30-2020, 10:30 PM
Replies: 47
Views: 2,914
Posted By BobTurner
Probability low, but not zero. Ask the guy who...

Probability low, but not zero. Ask the guy who built the long EZ, sold it to B, who sold it to John Denver. When the estate sued, he must have had legal bills before he was removed from the suit, not...
Forum: Autopilots 01-30-2020, 10:05 PM
Replies: 28
Views: 861
Posted By BobTurner
If that’s really what it says, VAL needs a new...

If that’s really what it says, VAL needs a new tech writer. It should be something like VOR-LOC, GS, MB.
Of course MB are at 75 MHz, should have its own antenna.
Forum: Autopilots 01-30-2020, 09:07 PM
Replies: 28
Views: 861
Posted By BobTurner
One coax to an SL30. The SL30 has an internal...

One coax to an SL30. The SL30 has an internal splitter for the GS receiver.
Forum: Autopilots 01-30-2020, 08:24 PM
Replies: 28
Views: 861
Posted By BobTurner
A dipole won’t fit, won’t work well in the tip,...

A dipole won’t fit, won’t work well in the tip, will be oriented incorrectly.
To copy the Archer, make sure you copy the built-in capacitor exactly (area, spacing, and dielectric material). It’s...
Forum: Autopilots 01-30-2020, 07:42 PM
Replies: 28
Views: 861
Posted By BobTurner
I have the Archer nav antenna (which,...

I have the Archer nav antenna (which, technically, is a quarter wave over a ground plane) in my -10’s wingtip. Works fine. Of course, I always land 15’ right of the center line -:).
Forum: RV General Discussion/News 01-30-2020, 02:14 PM
Replies: 48
Views: 3,900
Posted By BobTurner
Slightly off topic...

The current, new IO-540 from Vans comes with one retard mag (not impulse), which pretty much requires the builder to spend another $1K on a ‘Slick-Start’ or similar box. Total (mag plus SlickStart)...
Forum: ADS-B 01-30-2020, 02:05 PM
Replies: 8
Views: 700
Posted By BobTurner
Summary. 1. You need to read the documentation....

Summary.
1. You need to read the documentation. If the link is ARINC, you need two wires. If it is RS232, then one wire (plus common ground) but the Format must be set to match the Garmin...
Forum: RV General Discussion/News 01-30-2020, 01:50 PM
Replies: 47
Views: 2,914
Posted By BobTurner
As Gill mentioned above, the faa will not issue a...

As Gill mentioned above, the faa will not issue a repairman certificate to an LLC. Only to an individual, and it’s not transferable. Just like a pilot license.
Forum: ADS-B 01-29-2020, 11:16 PM
Replies: 8
Views: 700
Posted By BobTurner
No idea about your question (where is the data...

No idea about your question (where is the data coming from?) but for sure, ARINC is a two wire system. You need a second line to IN 1B if it has any chance to work.
Forum: GPS 01-27-2020, 08:54 PM
Replies: 11
Views: 1,002
Posted By BobTurner
This is what I do, it seems quicker. But you can...

This is what I do, it seems quicker. But you can also just hit the PROC 'button', and type in the airport ID as the destination, then select the approach from the list, the IAF or vectors, etc....
Forum: Traditional Aircraft Engines 01-27-2020, 08:47 PM
Replies: 12
Views: 971
Posted By BobTurner
This is my imperfect understanding: At "high"...

This is my imperfect understanding:
At "high" power settings (when rich of peak), there is a "danger" area near 50 deg F rich of peak, where CHT's can get out of hand, and/or detonation risks exist....
Forum: Propellers 01-27-2020, 08:27 PM
Replies: 17
Views: 1,651
Posted By BobTurner
Maybe he lives in Death Valley, in the...

Maybe he lives in Death Valley, in the summer.
Serious question: Do any props have cold temperature RPM limits (to keep from getting close to, or exceeding, Mach 1, where their efficiency presumably...
Forum: RV General Discussion/News 01-27-2020, 08:08 PM
Replies: 28
Views: 2,203
Posted By BobTurner
IMHO this is exactly the FAA's interpretation....

IMHO this is exactly the FAA's interpretation. Since what is at issue is builder's "intent", this is often difficult to prove/disprove in a court. But I can tell, it's easy:
(1) The builder who is in...
Forum: Autopilots 01-27-2020, 03:25 PM
Replies: 7
Views: 558
Posted By BobTurner
To the OP: notice the responders said...

To the OP: notice the responders said ‘momentarily’ closed to disconnect. On some brands/models of autopilots holding this switch closed for longer (seconds or more) will result in the autopilot...
Forum: RV Ongoing Maintenance Issues 01-27-2020, 12:36 PM
Replies: 58
Views: 4,841
Posted By BobTurner
The builder signs off the first condition...

The builder signs off the first condition inspection, prior to the A/W inspection. After that, it has to be one of the last two -repairman or A&P. And FAA policy is to issue no more than one...
Forum: RV General Discussion/News 01-26-2020, 04:08 PM
Replies: 8
Views: 759
Posted By BobTurner
I have a small placard above my flap control to...

I have a small placard above my flap control to remind me of max airspeed for 1/2 and full flaps.
Forum: RV General Discussion/News 01-26-2020, 01:49 AM
Replies: 12
Views: 1,133
Posted By BobTurner
Above is true. It is also true that the FARs...

Above is true. It is also true that the FARs restrict EAB aircraft to day, vfr. And it is true that the usual op limits given out contain a waiver, allowing ifr if you equip per far 91.205, and...
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