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Search: Posts Made By: BobTurner
Forum: RV General Discussion/News Yesterday, 06:49 PM
Replies: 129
Views: 28,418
Posted By BobTurner
As far as detonation issues, most modern cars...

As far as detonation issues, most modern cars have knock sensors, and retard the timing and/or enrichen the mixture at the first signs of knock (which is mild detonation). Older cars just did these...
Forum: RV General Discussion/News 09-22-2022, 10:03 PM
Replies: 19
Views: 1,893
Posted By BobTurner
Full stalls for PP license

The FAA keeps changing its mind. In the 1950’s it was full stalls and spins. By 1980 it was full stalls but no spins. Then, …I forget when…., it was ‘approach to stalls’. Now, as of a few years ago,...
Forum: Electrical Systems 09-22-2022, 06:55 PM
Replies: 30
Views: 4,488
Posted By BobTurner
12 volts - unless you're planning on an...

12 volts - unless you're planning on an electrically driven AC compressor. Most use an engine driven compressor.
A couple of decades ago, high current usage was pushing more aircraft toward 24 volts....
Forum: COMM 09-21-2022, 02:52 PM
Replies: 8
Views: 360
Posted By BobTurner
I’d start by contacting Dynon. I have a different...

I’d start by contacting Dynon. I have a different system (GRT Hx/SL30) but it works with ‘serial’ as the output format from the SL30. It also shows the ‘monitored’ VOR as an RSI needle superimposed...
Forum: RV General Discussion/News 09-20-2022, 01:47 PM
Replies: 19
Views: 1,458
Posted By BobTurner
Just to be clear: there is currently only one...

Just to be clear: there is currently only one insurance company that writes policies ‘direct to customer’, that is Avemco. To get a quote from them, contact them directly. But be warned, for some...
Forum: RV General Discussion/News 09-20-2022, 12:13 PM
Replies: 19
Views: 1,458
Posted By BobTurner
And your bank, if you have a loan. And your...

And your bank, if you have a loan. And your city/county/landlord if you lease a hangar (my leased hangar is from a city. Not only do they require liability insurance, they also want to be a named...
Forum: RV General Discussion/News 09-19-2022, 11:38 PM
Replies: 19
Views: 1,458
Posted By BobTurner
Why not go right to a good insurance broker?...

Why not go right to a good insurance broker? Arthur Gallagher is a VAF advertiser. Ask for Leah Ringeisen, have a nice chat.
Any EAB is likely to be expensive (my guess, $4000) for the first year if...
Forum: RV-10 09-19-2022, 07:40 PM
Replies: 25
Views: 2,205
Posted By BobTurner
I find this statement to be without foundation.

I find this statement to be without foundation.
Forum: RV-10 09-19-2022, 05:31 PM
Replies: 3
Views: 424
Posted By BobTurner
My RV10 is not what you described, above. It's a...

My RV10 is not what you described, above. It's a -10 with way below average do-it-yourself paint (I'm a poor painter), minimal interior (but it does have comfortable leather-covered Vans seats), and...
Forum: Electrical Systems 09-18-2022, 07:03 PM
Replies: 6
Views: 323
Posted By BobTurner
Check your field line (which does double duty as...

Check your field line (which does double duty as a sense line), connections, CB, for any loose/oxidized connections.
Forum: RV-10 09-15-2022, 04:27 PM
Replies: 25
Views: 2,205
Posted By BobTurner
There are always trade offs, of course, beyond...

There are always trade offs, of course, beyond the obvious dollars. The other obvious one is weight. Do you want a three adult luxo-cruiser, or a four adult airplane that’s warm (or hot) on the...
Forum: Instrument Flight Rules 09-15-2022, 04:17 PM
Replies: 7
Views: 631
Posted By BobTurner
Note that the MB was a legally required sanity...

Note that the MB was a legally required sanity check, that the GS was operating properly. In practice, it’s easy to shoot the ILS without MB (but maybe not legal or wise). LOC approach, that’s...
Forum: RV-10 09-11-2022, 10:24 PM
Replies: 13
Views: 1,081
Posted By BobTurner
The function of the relay is to reverse the...

The function of the relay is to reverse the logic, so an open circuit in the door closed detection will show as ‘door open’.
Forum: Glass Cockpit 09-11-2022, 01:00 AM
Replies: 9
Views: 558
Posted By BobTurner
Not everyone. Just those who bought a Dynon....

Not everyone. Just those who bought a Dynon. Those who bought Garmin swear by them. And those with GRT think they made the right call.
Full disclosure: I have GRT and think it’s the best. But the...
Forum: Glass Cockpit 09-10-2022, 09:34 PM
Replies: 5
Views: 236
Posted By BobTurner
Check the wiring is intact?

Check the wiring is intact?
Forum: Glass Cockpit 09-10-2022, 08:08 PM
Replies: 5
Views: 236
Posted By BobTurner
What autopilot? Is it 2 axis? In order to have...

What autopilot? Is it 2 axis?
In order to have the autopilot track an ILS or LPV glide slope you will need to have the ARINC pairs hooked up. Usually these lines are switched through a DPDT switch so...
Forum: Glass Cockpit 09-10-2022, 12:09 PM
Replies: 10
Views: 844
Posted By BobTurner
Well, the main thing to know is that while...

Well, the main thing to know is that while Chelton had a good reputation as far as I know, they have been out of business for at least a dozen years. Repairs/service are very hard to come by....
Forum: GPS 09-09-2022, 06:15 PM
Replies: 2
Views: 263
Posted By BobTurner
Curiosity 1. For going from G420W to Trig I use...

Curiosity 1. For going from G420W to Trig I use ‘ADSB+’. There is a ‘+’, but no ‘1’. My guess is Trig reverse engineered that format and is in no hurry to update it.
Problem 1. Like your previous...
Forum: Glass Cockpit 09-08-2022, 04:53 PM
Replies: 15
Views: 2,020
Posted By BobTurner
This is true. But the old post you quoted, while...

This is true. But the old post you quoted, while not completely clear, was specifically directed toward GPS based approaches
Forum: RV Ongoing Maintenance Issues 09-07-2022, 05:23 PM
Replies: 9
Views: 936
Posted By BobTurner
Thanks. I just saw an answer to someone’s...

Thanks. I just saw an answer to someone’s (yours?) inquiry on AC Spruce: 10 years.
Forum: RV Ongoing Maintenance Issues 09-07-2022, 03:33 PM
Replies: 9
Views: 936
Posted By BobTurner
New Lightspeed headset w/ CO monitor

Title says it all. I can’t seem to find the answer to this question: Anyone know if there is a lifetime limit on the CO sensor?
Forum: COMM 09-07-2022, 12:52 PM
Replies: 3
Views: 294
Posted By BobTurner
‘Sidetone’: your radio will send part of your...

‘Sidetone’: your radio will send part of your mike audio back to your headset, so you can hear what the transmitter hears, from you.
Forum: RV General Discussion/News 09-07-2022, 12:49 PM
Replies: 7
Views: 633
Posted By BobTurner
Auto-correct error?

Missing an ‘f’? -:)
Forum: Traditional Aircraft Engines 09-05-2022, 02:05 PM
Replies: 18
Views: 1,467
Posted By BobTurner
I think maybe you sniffed a bit too much of that...

I think maybe you sniffed a bit too much of that gas!
80/87 was dyed a faint red color, and was basically 100LL with 4 times less lead. It was available in the early 1980's at LVK and we ran our low...
Forum: RV General Discussion/News 09-04-2022, 07:37 PM
Replies: 20
Views: 1,663
Posted By BobTurner
As a cfii I get plenty of time in the right seat...

As a cfii I get plenty of time in the right seat - but still prefer to fly from the left. ("first learned, best learned?"). I think I'm about the same (equally bad -:) ) from either seat with the...
Forum: RV General Discussion/News 09-03-2022, 05:29 PM
Replies: 16
Views: 1,188
Posted By BobTurner
Unless, of course, as happened to myself and many...

Unless, of course, as happened to myself and many others, the FSDO flat-out refuses to do it, tells you hiring a DAR is your only option. However.....
about 5 months after I had a DAR inspect/issue...
Forum: COMM 09-03-2022, 01:17 PM
Replies: 2
Views: 291
Posted By BobTurner
You can remove the coax and/or antenna from a...

You can remove the coax and/or antenna from a receiver, which is what the vor is, without harm. Do not do this with a transmitter (com, xponder, adsb-out, DME).
Forum: VAF Classifieds (posts in here deleted after 30 days) 09-03-2022, 12:50 PM
Replies: 6
Views: 613
Posted By BobTurner
If you want the vinyl wrap version, most Kinko’s...

If you want the vinyl wrap version, most Kinko’s can print the vinyl for you.
Forum: Electrical Systems 09-02-2022, 11:57 PM
Replies: 11
Views: 835
Posted By BobTurner
The 2.5” piece that is connected to the coax is...

The 2.5” piece that is connected to the coax is half of a parallel plate capacitor. Hook up a battery there, and the plate will acquire a charge. And the opposite side, an equal but opposite charge....
Forum: RV-10 09-02-2022, 03:00 PM
Replies: 7
Views: 843
Posted By BobTurner
Curious that the 950 beats the 925 in all...

Curious that the 950 beats the 925 in all categories while still being lighter. Is it less physically robust? How does it get the weight savings with the same chemistry?
Forum: Traditional Aircraft Engines 09-02-2022, 12:10 AM
Replies: 91
Views: 15,688
Posted By BobTurner
‘Supplemental Type Certificate’. If you have a...

‘Supplemental Type Certificate’. If you have a 172, it has a type certificate - a lot of specifications, tests it passed, etc. That type certificate says, ‘must be operated on 100LL or 100/130 av gas...
Forum: RV General Discussion/News 08-31-2022, 06:22 PM
Replies: 2
Views: 356
Posted By BobTurner
Hi Buddy, Welcome to the madness! Where are you...

Hi Buddy,
Welcome to the madness!
Where are you based? KCCR? Have a hangar? I’m close enough (Castro Valley, based at LVK) that if you want some help with your first oil change, just let me know. You...
Forum: Probable Cause Documents Discussed 08-31-2022, 02:48 PM
Replies: 84
Views: 7,297
Posted By BobTurner
So, should we/vans consider much smaller...

So, should we/vans consider much smaller restrictor aperatures? I understand that with air (MP) a restrictor can induce a lag in the reading, but with liquids, how small can you go?
Forum: Electrical Systems 08-31-2022, 11:45 AM
Replies: 3
Views: 587
Posted By BobTurner
Some (many?) aviation headsets have a hidden...

Some (many?) aviation headsets have a hidden switch that converts them to mono. What brand/model do you have? Otherwise, the easy fix is to order, from an electronic hobby type place, a special plug,...
Forum: Electrical Systems 08-31-2022, 11:30 AM
Replies: 6
Views: 342
Posted By BobTurner
In theory, any ground should work. In reality, in...

In theory, any ground should work. In reality, in an electrically noisy environment, best practice is to run the (- or ‘common’) wire from the mike side by side (or twisted pair, even better) inside...
Forum: Probable Cause Documents Discussed 08-31-2022, 11:17 AM
Replies: 84
Views: 7,297
Posted By BobTurner
If nothing else, this report should remind pilots...

If nothing else, this report should remind pilots that shoulder harnesses really do work - but not if they’re worn too loosly.
Forum: Electrical Systems 08-31-2022, 11:05 AM
Replies: 6
Views: 342
Posted By BobTurner
Yes, this is so common that those pins are often...

Yes, this is so common that those pins are often called ‘ground pins’ and are connected to a common ground. However, some of the better audio panels will isolate the mike (-) from common ground, to...
Forum: Probable Cause Documents Discussed 08-30-2022, 05:50 PM
Replies: 84
Views: 7,297
Posted By BobTurner
^^^^The winner! Who does work on a fuel line and...

^^^^The winner! Who does work on a fuel line and doesn’t follow it up with some careful ground testing?
Forum: RV-10 08-30-2022, 05:35 PM
Replies: 8
Views: 1,220
Posted By BobTurner
I’m sure you’ll soon get an ‘official’ welcome...

I’m sure you’ll soon get an ‘official’ welcome from Mike.
So, one correction: There are no AD’s for experimental amateur built airplanes; there is no manufacturer other than the original builder(s)....
Forum: RV General Discussion/News 08-30-2022, 12:47 PM
Replies: 13
Views: 1,085
Posted By BobTurner
A few weeks ago I got a registration renewal...

A few weeks ago I got a registration renewal reminder from the faa (now august, not due until Jan). I followed the instructions for on-line renewal (no changes), sent it off. Got the new registration...
Forum: RV General Discussion/News 08-29-2022, 06:16 PM
Replies: 28
Views: 2,625
Posted By BobTurner
Any over-heating problems with the iPad? Or is...

Any over-heating problems with the iPad? Or is your mount also a cooler?
Forum: RV-7/7A 08-29-2022, 06:14 PM
Replies: 14
Views: 1,248
Posted By BobTurner
Gear and wheel fairings really work. Without them...

Gear and wheel fairings really work. Without them you’ll lose of order 10 knots.
Search for ‘heavy wing’. Check the vertical height of the two ailerons, they need to be exactly the same. Then move on...
Forum: RV General Discussion/News 08-29-2022, 01:03 PM
Replies: 24
Views: 2,453
Posted By BobTurner
Here in the US so many people misspelled...

Here in the US so many people misspelled ‘biennial’ that the FAA changed the name of the required two year review to ‘flight review’, dropping ‘biennial’, some years ago. But it’s still every two...
Forum: Job Board 08-29-2022, 12:48 PM
Replies: 3
Views: 404
Posted By BobTurner
Rules

An A&P may do the annual condition inspection. I believe all AIs are also A&Ps so that’s covered.
An RV8 builder may not sign off the condition inspection, unless he was the original builder of that...
Forum: RV General Discussion/News 08-28-2022, 05:54 PM
Replies: 24
Views: 2,453
Posted By BobTurner
Funny you mention that. I had a whisky compass...

Funny you mention that. I had a whisky compass (didn’t want to argue over if it was needed) and a blank correction card. DAR, who was a good guy, says, ‘That has to be filled in. Now I know there’s...
Forum: COMM 08-28-2022, 02:50 PM
Replies: 30
Views: 1,842
Posted By BobTurner
You should do what you want. I see nothing...

You should do what you want. I see nothing dangerous or unsafe. It’s easy for others to spend your money!

But I do have a comment about your previous post about audio panels being a single point...
Forum: RV General Discussion/News 08-28-2022, 02:22 PM
Replies: 12
Views: 699
Posted By BobTurner
Interesting. Your old system worked, you put in...

Interesting. Your old system worked, you put in new coax and a new radio, and now it doesn’t? IMHO that points to the radio or coax. Do I understand that the problem exists on some frequencies, but...
Forum: RV General Discussion/News 08-28-2022, 02:09 PM
Replies: 12
Views: 699
Posted By BobTurner
Also, these antennas require a good ground...

Also, these antennas require a good ground connection right at or under the antenna. Check the mounting screws/nuts for any sign of corrosion between them and the airframe. (This will also show up if...
Forum: GPS 08-27-2022, 08:42 PM
Replies: 12
Views: 1,696
Posted By BobTurner
Well, as someone who has personally experienced a...

Well, as someone who has personally experienced a gps outage at 1100’ agl while on a gps approach, I’m not yet in the gps-only camp. But I also carry more than the minimum instruments required by the...
Forum: GPS 08-27-2022, 04:28 PM
Replies: 12
Views: 1,696
Posted By BobTurner
Well, I don’t know what the FAA thinks. But my...

Well, I don’t know what the FAA thinks. But my guess is that they were just trying to be a bit conservative, as alternate wx minimums always are. In particular, the ability to shoot the...
Forum: GPS 08-27-2022, 03:54 PM
Replies: 12
Views: 1,696
Posted By BobTurner
The first statement is not true. But it used to...

The first statement is not true. But it used to be true. If you have a TSO 129 (older, non-WAAS) gps, then for ifr you were (and still are) required to have the capability to shoot a non-gps approach...
Forum: COMM 08-27-2022, 11:04 AM
Replies: 30
Views: 1,842
Posted By BobTurner
This is fine for general use, but not for a...

This is fine for general use, but not for a backup; if #1 fails, #2 won’t work either.
Forum: COMM 08-26-2022, 05:10 PM
Replies: 5
Views: 292
Posted By BobTurner
Most likely, yes. 18” is pretty close. Some...

Most likely, yes. 18” is pretty close.
Some radios (not familiar with yours) have a pin labeled ‘transmit interlock’ or ‘receiver inhibit’ or ‘receiver reduced gain’ or something like that. If yours...
Forum: VAF Classifieds (posts in here deleted after 30 days) 08-26-2022, 02:09 PM
Replies: 3
Views: 491
Posted By BobTurner
Hi Keith, and welcome to the vaf web site. Since...

Hi Keith, and welcome to the vaf web site.
Since you say you are a new pilot, let me give you some background, and forgive me if you already know this stuff.
I presume you are looking for a cfi, and...
Forum: COMM 08-26-2022, 01:32 PM
Replies: 30
Views: 1,842
Posted By BobTurner
Mark, I agree with everything you posted, except...

Mark, I agree with everything you posted, except the conclusion (!) copied above. A single toggle switch (transmit1/transmit2) plus an audio mixer for the headphone output, gives you exactly the same...
Forum: Northwest 08-26-2022, 01:08 PM
Replies: 22
Views: 2,877
Posted By BobTurner
+1 Absolutely perfectly said.

+1 Absolutely perfectly said.
Forum: COMM 08-25-2022, 01:33 PM
Replies: 30
Views: 1,842
Posted By BobTurner
Okay, here’s your answer 1. Use the schematic in...

Okay, here’s your answer
1. Use the schematic in post #9, but with the corrections of post #10, e.g., change ‘com power’ to ‘mike’, change ‘com1 pwr’ to ‘com 1 mike input’, ‘com2 pwr’ to ‘com 2 mike...
Forum: RV-14 08-25-2022, 12:54 PM
Replies: 7
Views: 3,316
Posted By BobTurner
Only you can decide this - where will your nav...

Only you can decide this - where will your nav radio be, how/ where will you run the coax, do you need extra at the end to allow the wongtip to be easily removed, etc.? Measure the actual layout with...
Forum: RV General Discussion/News 08-24-2022, 05:30 PM
Replies: 30
Views: 1,987
Posted By BobTurner
Well, above 14,000' it's "all the time", so there...

Well, above 14,000' it's "all the time", so there is little to debate whether it's cumulative or not. As to "above 12,500', the FAR says "..that part of the flight at those altitudes in excess of 30...
Forum: RV General Discussion/News 08-24-2022, 03:55 PM
Replies: 30
Views: 1,987
Posted By BobTurner
It is not a trick question; strictly speaking...

It is not a trick question; strictly speaking every pilot should know the answer.
Answer A is incorrect.
The FAA has previously issued their interpretation, that the 30 minutes is cumulative time on...
Forum: RV General Discussion/News 08-24-2022, 01:12 PM
Replies: 30
Views: 1,987
Posted By BobTurner
Mostly off topic

Here’s a trivia question I use on Flight Reviews, if I run out of things to say:
You’ve just reached exactly 12,501’ MSL. How long can you cruise there without supplemental oxygen?
A. 30 minutes
B....
Forum: Midwest 08-24-2022, 12:54 PM
Replies: 6
Views: 417
Posted By BobTurner
Folks, this is a public forum. You never know who...

Folks, this is a public forum. You never know who may be reading. Please be careful about any discussion concerning the exchanging of money or other compensation.
Forum: Northwest 08-23-2022, 06:50 PM
Replies: 22
Views: 2,877
Posted By BobTurner
When we went many years ago, AK required (but...

When we went many years ago, AK required (but didn't seem to enforce) you to carry a firearm in the plane. Canada forbid handguns, so I borrowed a shotgun with 00 buck shot. Never found out if that...
Forum: California 08-23-2022, 04:48 PM
Replies: 6
Views: 722
Posted By BobTurner
Asking prices mean nothing. You need to find...

Asking prices mean nothing. You need to find actual selling prices. If you carry hull insurance, I ‘d start with your insurance broker. Ask him/her if your stated value is in line with current...
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