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Search: Posts Made By: BobTurner
Forum: RV General Discussion/News Today, 01:18 PM
Replies: 31
Views: 2,240
Posted By BobTurner
Ack! Watch out for nearly invisible guy wires....

Ack! Watch out for nearly invisible guy wires. Just remember, the higher you go, the more indicated altitude might differ from true altitude. With Fall here, you may find a day with or close to a...
Forum: RV General Discussion/News Yesterday, 02:41 PM
Replies: 31
Views: 2,240
Posted By BobTurner
As just discussed, this should not be repeatable....

As just discussed, this should not be repeatable. For the same gps altitude you should see different barometric altitudes, if the lapse rate/OAT varies flight to flight. As also discussed, the lower...
Forum: Glass Cockpit Yesterday, 02:29 PM
Replies: 14
Views: 623
Posted By BobTurner
Can you park at an airport where a vor can be...

Can you park at an airport where a vor can be received on the ground? If the needle still wags like this, it’s likely the electronics.
Forum: RV General Discussion/News Yesterday, 02:15 PM
Replies: 31
Views: 2,240
Posted By BobTurner
Just a further comment about barometric...

Just a further comment about barometric altimetry. When you shoot an approach into an airport at anything other than sea level, you get an altimeter setting that is not ‘barometric pressure converted...
Forum: RV General Discussion/News Yesterday, 02:10 PM
Replies: 31
Views: 2,240
Posted By BobTurner
One way to do Galin’s test is to land at an...

One way to do Galin’s test is to land at an airport, set the altimeter to field elevation, then take off and do a high speed pass. You might be able to use something of known height - top of a...
Forum: RV Ongoing Maintenance Issues 10-18-2021, 10:33 PM
Replies: 11
Views: 843
Posted By BobTurner
I’m pretty sure there’s a Vans’ SB to safety wire...

I’m pretty sure there’s a Vans’ SB to safety wire that nut.
Forum: Midwest 10-18-2021, 06:28 PM
Replies: 12
Views: 491
Posted By BobTurner
In fact, this is consistent with the ACS (nee...

In fact, this is consistent with the ACS (nee PTS), which requires a precision approach OR an LPV with minimums below 300' agl. The issue is the two required non-precision approaches. The ACS says...
Forum: RV General Discussion/News 10-15-2021, 06:53 PM
Replies: 20
Views: 1,777
Posted By BobTurner
As someone else mentioned, local scuba shops will...

As someone else mentioned, local scuba shops will often do this for a very fair price. But you might have to show up with a fitting to adapt your tank’s fitting to their’s. Are there any scuba shops...
Forum: COMM 10-13-2021, 09:43 PM
Replies: 6
Views: 212
Posted By BobTurner
Have you swapped pilot and copilot headphones, to...

Have you swapped pilot and copilot headphones, to make sure it’s not them?
Forum: Glass Cockpit 10-13-2021, 02:34 PM
Replies: 14
Views: 623
Posted By BobTurner
+1. But often it’s caused by signal reflections...

+1. But often it’s caused by signal reflections off hills. I didn’t think Wisc had any hills? But does it do this when above 5,000’ (scalloping less likely)?
Forum: RV General Discussion/News 10-13-2021, 12:50 PM
Replies: 41
Views: 4,108
Posted By BobTurner
Yes, I have heard of the faa citing a pilot for...

Yes, I have heard of the faa citing a pilot for departing, day-vfr, with a known inop beacon. That said, I believe eab operators have an ‘out’. First, note that far 91.205 specifically excludes EAB...
Forum: RV General Discussion/News 10-12-2021, 11:44 AM
Replies: 15
Views: 1,054
Posted By BobTurner
And again, a problem within the FAA. I had...

And again, a problem within the FAA. I had exactly the same experience with the ‘original’, transition training only but for hire in my plane, LODA, ten years ago. “Can’t be done, we never heard of...
Forum: RV General Discussion/News 10-11-2021, 08:17 PM
Replies: 15
Views: 1,054
Posted By BobTurner
This is getting ridiculous. Please do not believe...

This is getting ridiculous. Please do not believe everything you read here. Consult an aviation lawyer. He will tell you that once you get the new, emailed LODA, you may pay a cfi for instruction,...
Forum: RV General Discussion/News 10-11-2021, 12:11 PM
Replies: 41
Views: 4,108
Posted By BobTurner
Just to be clear, ‘anti-collision’ lights can be...

Just to be clear, ‘anti-collision’ lights can be strobes or rotating (flashing) beacons. I’ve flown 152s with a red beacon, no strobes. And a 172RG with strobes, no beacon. Whatever it is, it’s...
Forum: RV General Discussion/News 10-11-2021, 11:54 AM
Replies: 41
Views: 4,108
Posted By BobTurner
Well, be surprised. For day vfr operations of an...

Well, be surprised. For day vfr operations of an EAB no lights are required to be installed.
Forum: Glass Cockpit 10-10-2021, 11:52 PM
Replies: 5
Views: 249
Posted By BobTurner
I have a single adjustable LM317 used as an...

I have a single adjustable LM317 used as an external dimmer, with separate lines to each efis. I put a fairly sizeable resistor in the line to the brighter display, chose value by trial and error to...
Forum: RV Building Tips/Techniques 10-10-2021, 09:26 PM
Replies: 23
Views: 2,109
Posted By BobTurner
Could be you just aren’t holding the gun square...

Could be you just aren’t holding the gun square to the work. However, a common technique flaw, is relaxing the pressure on the gun handle prior to fully releasing the trigger. Try to say to yourself,...
Forum: RV General Discussion/News 10-10-2021, 08:46 PM
Replies: 15
Views: 1,054
Posted By BobTurner
Once again the FAA is less than crystal-clear....

Once again the FAA is less than crystal-clear. The above guidance was issued along with the ‘original’ LODAs, now over ten years old. This LODA - still available but not as easy to get as the ones...
Forum: COMM 10-09-2021, 06:31 PM
Replies: 12
Views: 696
Posted By BobTurner
This is called ‘strict liability’ and is NOT the...

This is called ‘strict liability’ and is NOT the law in most US states. I don’t know about Canada.
Forum: RV General Discussion/News 10-09-2021, 06:00 PM
Replies: 14
Views: 778
Posted By BobTurner
If you have the proper tools, follow...

If you have the proper tools, follow instructions, it’s not that hard.
Forum: RV General Discussion/News 10-09-2021, 12:10 AM
Replies: 15
Views: 1,054
Posted By BobTurner
Please provide a reference. I do not believe this...

Please provide a reference. I do not believe this is correct.
Forum: RV-14 10-08-2021, 08:04 PM
Replies: 3
Views: 498
Posted By BobTurner
Bad news for your former owner: In CA property...

Bad news for your former owner: In CA property tax is assessed as of Jan 1. The bills don’t go out until later, depending on the county (I get mine in Aug), but if he was the CA owner on Jan 1 he...
Forum: Safety 10-07-2021, 10:12 AM
Replies: 19
Views: 1,836
Posted By BobTurner
Just a reminder, that in 99% of US airspace,...

Just a reminder, that in 99% of US airspace, ‘clear of cloud’ is not legal. You need 2000’ clearance to do this.
Forum: GPS 10-07-2021, 10:05 AM
Replies: 17
Views: 1,161
Posted By BobTurner
I think you meant 75’. A 300’ error would put you...

I think you meant 75’. A 300’ error would put you below the ground on a lot of approaches.
Forum: GPS 10-06-2021, 09:55 PM
Replies: 18
Views: 874
Posted By BobTurner
IPad mini w/gps in a -10. Pretty much used for...

IPad mini w/gps in a -10. Pretty much used for backup. Not mounted, I pick it up to look at it. I use WingX. I wear progressive lens glasses, can read approach plates okay (but of course they’re only...
Forum: GPS 10-06-2021, 07:14 PM
Replies: 17
Views: 1,161
Posted By BobTurner
Bill's post is an interesting discussion on what...

Bill's post is an interesting discussion on what is "mean sea level", and can account for some of the errors in comparing barometric altitude to GPS altitude. But most of the time, it's just the...
Forum: GPS 10-06-2021, 11:01 AM
Replies: 17
Views: 1,161
Posted By BobTurner
Please remember that gps altitude is NOT the same...

Please remember that gps altitude is NOT the same as barometric altitude. GPS should show true MSL altitude, while barometric depends on the temperature lapse rate. Temperature higher than standard?...
Forum: RV General Discussion/News 10-05-2021, 08:12 PM
Replies: 83
Views: 14,246
Posted By BobTurner
I too find these posts interesting, to keep on...

I too find these posts interesting, to keep on top of what’s going on. That said, be careful not to generalize too much. This is very much an individual service industry, everyone’s different. Some...
Forum: Electrical Systems 10-05-2021, 01:55 PM
Replies: 28
Views: 2,029
Posted By BobTurner
There are probably as many different ways as...

There are probably as many different ways as there are builders -:) But one idea I saw was to set the standby alternator’s voltage to 13.9, while the primary is set to 14.3 volts; both connected. In...
Forum: RV-10 10-04-2021, 07:09 PM
Replies: 6
Views: 613
Posted By BobTurner
You seem to be trying to use the fuel flow...

You seem to be trying to use the fuel flow apertures to adjust the CHT. Not the right approach.
1. Do the so-called Gami test: slowly lean, and note the fuel flow when each cylinder reaches peak EGT....
Forum: RV Ongoing Maintenance Issues 10-03-2021, 06:05 PM
Replies: 7
Views: 887
Posted By BobTurner
Have to agree with Lenny here. If the buss...

Have to agree with Lenny here. If the buss voltage was close to 14 volts, the regulator and alternator were doing their job. The alternator can't "force" 55 amps to flow; that only happens if...
Forum: Safety 10-03-2021, 02:43 PM
Replies: 7
Views: 529
Posted By BobTurner
Panel location of GPS Navigator (IFR)

For some time, I've noticed a trend for builders to locate their gps navigator (GTN650, etc) low - below the nominal panel over the center tunnel. I recently flew in an RV that was layed out like...
Forum: RV-10 10-02-2021, 06:31 PM
Replies: 14
Views: 1,010
Posted By BobTurner
Have you monitored battery temperature for the...

Have you monitored battery temperature for the first 20 minutes or so after shutdown? I think that area gets hotter once all cooling air is removed, but have not made any measurements.
Forum: RV Ongoing Maintenance Issues 10-02-2021, 06:00 PM
Replies: 12
Views: 806
Posted By BobTurner
You have a "Heavy right wing", by definition....

You have a "Heavy right wing", by definition. Read thru the document in post #4.
Forum: Autopilots 10-02-2021, 09:38 AM
Replies: 9
Views: 481
Posted By BobTurner
Going from memory here…..I think the GRT will...

Going from memory here…..I think the GRT will output NMEA or Aviation format (choose in serial port setup) at 4800 or 9600 baud rate (choose in serial port setup).
Edit: For the record, from my GRT...
Forum: Safety 10-01-2021, 06:39 PM
Replies: 85
Views: 16,849
Posted By BobTurner
I guess I disagree with these statements. It is...

I guess I disagree with these statements. It is slightly worse. And you can simulate it by just pulling the mixture to cutoff. (I recommend over a suitable landing site just in case).
Forum: Autopilots 10-01-2021, 06:08 PM
Replies: 9
Views: 481
Posted By BobTurner
Since you didn't mention a "navigator", I presume...

Since you didn't mention a "navigator", I presume you have a GPS with position data (only). You should be able to send this info to the autopilot with a single RS232 link. The TruTrak will then fly...
Forum: RV General Discussion/News 09-30-2021, 09:19 PM
Replies: 26
Views: 2,354
Posted By BobTurner
And if you undercut prevailing prices, you again...

And if you undercut prevailing prices, you again hurt existing cfi’s. And if you charge more, you’ll get no business. There’s really no one right answer.
Forum: RV General Discussion/News 09-30-2021, 09:08 PM
Replies: 8
Views: 824
Posted By BobTurner
Lycoming engines use sodium filled valve stems to...

Lycoming engines use sodium filled valve stems to transfer heat the the valve guides. If this heat cokes oil in the guide, the clearance goes to zero and the valve can stick open, especially when...
Forum: RV-10 09-30-2021, 02:21 PM
Replies: 24
Views: 2,093
Posted By BobTurner
This doesn’t work, because the brakes are always...

This doesn’t work, because the brakes are always inboard. You have to take the tire off the rim, flip it, put it back together.
Forum: GPS 09-30-2021, 02:18 PM
Replies: 6
Views: 552
Posted By BobTurner
+1. This is one of those parts, that you end up...

+1. This is one of those parts, that you end up trying to put it back together wishing you had three hands.
Forum: RV General Discussion/News 09-29-2021, 09:34 PM
Replies: 16
Views: 1,962
Posted By BobTurner
IIRC some Lycoming connecting rod bolts are...

IIRC some Lycoming connecting rod bolts are tightened this way, to a designated stretch.
Forum: California 09-29-2021, 05:58 PM
Replies: 16
Views: 1,015
Posted By BobTurner
After 30 years as a cfii, here’s my 2 cents...

After 30 years as a cfii, here’s my 2 cents worth:
1. Going from steam to glass is not too difficult; going from glass to steam is harder.
A lot of ifr is preparing for problems, like equipment...
Forum: RV Building Tips/Techniques 09-29-2021, 10:28 AM
Replies: 3
Views: 606
Posted By BobTurner
+1 The goal of ‘de-burring’ is not just to remove...

+1
The goal of ‘de-burring’ is not just to remove burrs. It also puts a very slight radius on the otherwise sharp edge where stress risers live.
Forum: RV General Discussion/News 09-29-2021, 10:05 AM
Replies: 44
Views: 20,639
Posted By BobTurner
As if to second Scott’s post, I think what Bob...

As if to second Scott’s post, I think what Bob meant is to add, not the torque needed to start the bolt turning, but the torque needed to keep it turning (‘running torque’), to the final desired...
Forum: RV General Discussion/News 09-29-2021, 09:50 AM
Replies: 26
Views: 2,354
Posted By BobTurner
I think so too. Another consideration: a few...

I think so too.
Another consideration: a few years back I ferried a 182 across the US, following a sale. Enroute (with the seller) both the vacuum pump and the backup electric attitude indicator...
Forum: RV-10 09-28-2021, 12:24 PM
Replies: 6
Views: 856
Posted By BobTurner
Or is it a regional jet?

Or is it a regional jet?
Forum: California 09-28-2021, 10:11 AM
Replies: 16
Views: 1,015
Posted By BobTurner
There is currently a crazy shortage of DPE’s in...

There is currently a crazy shortage of DPE’s in Northern CA. e.g., Ashley Snyder, DPE out of Lincoln, keeps her schedule on-line. Her first opening is in February. I recommend her as being fair, but...
Forum: RV-10 09-26-2021, 05:35 PM
Replies: 5
Views: 493
Posted By BobTurner
PM is fine.

PM is fine.
Forum: RV-10 09-25-2021, 11:29 PM
Replies: 5
Views: 493
Posted By BobTurner
Want to come to LVK? I have a -10 with...

Want to come to LVK? I have a -10 with do-it-yourself paint and interior; hangar neighbor has a -10 with pro paint and interior.
Forum: COMM 09-25-2021, 11:08 AM
Replies: 7
Views: 767
Posted By BobTurner
+1 on Stein’s diagram. The goal is to have one,...

+1 on Stein’s diagram. The goal is to have one, but only one, electrical path for each connection, including grounds. Ground the shield only at the audio panel. Don’t forget to use fiber washers to...
Forum: Safety 09-24-2021, 02:18 PM
Replies: 2
Views: 506
Posted By BobTurner
Strictly speaking, your barometric altimeter is...

Strictly speaking, your barometric altimeter is corrected for non-standard pressure AND temperature prior to takeoff….

I think you’re asking about adsb-out data? It is supposed to send out the same...
Forum: RV General Discussion/News 09-21-2021, 12:21 AM
Replies: 17
Views: 1,878
Posted By BobTurner
Is it insured? Try showing them the declared hull...

Is it insured? Try showing them the declared hull value. That said, most assessors know nothing about EAB. Your best bet is to do what they suggested - find some comparable sales.
Forum: RV-10 09-20-2021, 11:34 PM
Replies: 17
Views: 1,069
Posted By BobTurner
The ‘glance out the window’ technique doesn’t...

The ‘glance out the window’ technique doesn’t work so well on dark nights. Nor would I recommend it for ifr.
As to the sensor sensitivity: if you use the position sensor as in the photo in the post...
Forum: My RV Build Project 09-20-2021, 07:15 PM
Replies: 36
Views: 10,720
Posted By BobTurner
As demonstrated by inadvertent tests, in an RV-10...

As demonstrated by inadvertent tests, in an RV-10 engine fire, the heat goes back to the SS firewall and then under the aluminum airframe, where it melts a hole up into the cockpit. The Ti skin and...
Forum: RV-12/RV-12iS 09-20-2021, 06:50 PM
Replies: 19
Views: 1,594
Posted By BobTurner
I believe this is true. But the vans’ rivet heads...

I believe this is true. But the vans’ rivet heads always work, It’s the other, fancier designs, that give trouble!
Forum: RV-7/7A 09-20-2021, 06:08 PM
Replies: 6
Views: 684
Posted By BobTurner
Also useful to post temp or density altitude. In...

Also useful to post temp or density altitude. In SC I’ll bet it’s a bit warmer than standard.
Forum: RV-12/RV-12iS 09-20-2021, 06:03 PM
Replies: 19
Views: 1,594
Posted By BobTurner
Easier to do the following test. Disconnect (or...

Easier to do the following test. Disconnect (or plug) the static vents. Open the static line somewhere inside the cabin. Go fly. Problem fixed? (Try with air vents open, and closed.) Cabin pressure...
Forum: Traditional Aircraft Engines 09-20-2021, 05:46 PM
Replies: 12
Views: 1,113
Posted By BobTurner
Run 1 hour per year for 9 years? or more likely,...

Run 1 hour per year for 9 years? or more likely, 10 hours for one year, then none since. If this engine was in GA, it will be full of rust. If in AZ, maybe okay. Either way, you’re putting a lot of...
Forum: RV-8/8A 09-20-2021, 05:40 PM
Replies: 33
Views: 3,228
Posted By BobTurner
I think you have answered your own question. Yes,...

I think you have answered your own question.
Yes, if you have to limit MP to 18” when 22” is available, that’s a 20% loss in power, which will translate to something like a 6 or 7% loss of...
Forum: Glass Cockpit 09-20-2021, 03:31 PM
Replies: 4
Views: 474
Posted By BobTurner
One guess

Since you’re showing 1000rpm can we assume the engine is at idle? And the correct MP is 12.79”? Look for somewhere the data is being sent as ‘integer’ instead of ‘decimal’. IIRC this depends on how...
Forum: RV-12/RV-12iS 09-19-2021, 07:00 PM
Replies: 19
Views: 1,594
Posted By BobTurner
This doesn't sound right. At what altitude? At...

This doesn't sound right.


At what altitude? At 5000' or so I'd expect IAS to be 10% or so lower than average ground speed.
Forum: Oregon 09-19-2021, 02:31 PM
Replies: 10
Views: 704
Posted By BobTurner
If you want to head into eastern OR John Day...

If you want to head into eastern OR John Day (Grant Co. airport) is a very small town but picturesque. Reserve an airport crew car (town is walkable but very uphill on the return trip). Decent but...
Forum: Oregon 09-19-2021, 11:52 AM
Replies: 10
Views: 704
Posted By BobTurner
You left off the obvious - a factory tour of...

You left off the obvious - a factory tour of Vans! Except, they may still be closed to the general public due to Covid. Keep it on your list, for when things get back to normal.
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