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Search: Posts Made By: BobTurner
Forum: RV-10 Yesterday, 10:58 PM
Replies: 2
Views: 101
Posted By BobTurner
I think the tunnel is structural. Holes should be...

I think the tunnel is structural. Holes should be reinforced. If that requires a cover, I donít know.
Forum: Traditional Aircraft Engines Yesterday, 10:46 PM
Replies: 6
Views: 288
Posted By BobTurner
Unless, of course, you need to run rich to...

Unless, of course, you need to run rich to control CHTs.
Forum: Glass Cockpit Yesterday, 10:36 PM
Replies: 5
Views: 160
Posted By BobTurner
Two comments. 1. Far right side is not the...

Two comments.
1. Far right side is not the greatest place for a backup.
2. You already know the advantages of interconnecting. Have you considered the disadvantages? Is at at all possible for a fatal...
Forum: Traditional Aircraft Engines Yesterday, 10:21 PM
Replies: 3
Views: 138
Posted By BobTurner
Careful - the Ďthreadsí are helicoil. If theyíre...

Careful - the Ďthreadsí are helicoil. If theyíre damaged, you may need to remove them and replace with new.
Forum: RV General Discussion/News Yesterday, 09:42 PM
Replies: 2
Views: 127
Posted By BobTurner
The diode only goes on one way - the band end to...

The diode only goes on one way - the band end to the switch terminal.
Forum: COMM 06-21-2018, 12:12 PM
Replies: 7
Views: 312
Posted By BobTurner
Lacking any test equipment, you could try...

Lacking any test equipment, you could try lengthening your antenna by about 2Ē (make sure you have good electrical contact) and test-fly. If the problem at 120 MHz goes away (and maybe now 130 MHz...
Forum: RV General Discussion/News 06-21-2018, 12:19 AM
Replies: 8
Views: 1,241
Posted By BobTurner
#8. As Keith said, everyone loves what they chose...

#8. As Keith said, everyone loves what they chose for a panel. I have a GRT HX as my primary. All the EFIS boxes will display cdi and gs info on their primary display. Being entrenched in the past, I...
Forum: Glass Cockpit 06-20-2018, 11:40 AM
Replies: 13
Views: 1,199
Posted By BobTurner
I have a different opinion. First, for VFR, it...

I have a different opinion.
First, for VFR, it doesnít matter. But for IFR:
The built in autopilots are not all the same. For external autopilots (Trio, TruTrak), some boxes are better than others at...
Forum: RV-14 06-20-2018, 11:19 AM
Replies: 6
Views: 494
Posted By BobTurner
If your engine starts with an ‘X’ (XIO-390...)...

If your engine starts with an ‘X’ (XIO-390...) that signifies that Lycoming is not including any paperwork; technically it’s not certified, 40 hours is the correct answer. But whoever does your...
Forum: COMM 06-20-2018, 12:28 AM
Replies: 11
Views: 731
Posted By BobTurner
No, thatís not what he wants. He wants to select...

No, thatís not what he wants. He wants to select between com 1 and com 2, AND close the PTT circuit, by pushing one of two stick mounted switches. He wants to listen to both radios simultaneously.
Forum: Glass Cockpit 06-19-2018, 06:43 PM
Replies: 13
Views: 1,199
Posted By BobTurner
Not sure what you meant by "...getting the GPS...

Not sure what you meant by "...getting the GPS free later." The GRT gps is a position source for ADSB; it has no IFR database, and lacks any sort of TSO for IFR use. If you meant VFR use, then there...
Forum: RV-10 06-19-2018, 02:36 PM
Replies: 19
Views: 1,161
Posted By BobTurner
You have exactly the same condition I had:...

You have exactly the same condition I had: outboard side of elevator 1/16Ē high, plane flies right wing heavy. I slotted that aileron bracket, put some liquid metal goo into the hole and re-drilled...
Forum: Glass Cockpit 06-18-2018, 05:02 PM
Replies: 93
Views: 58,430
Posted By BobTurner
I forgot the original question: with your Garmin...

I forgot the original question: with your Garmin in vloc mode, the vor obs is set from the GRT HSI, same as I descrbed above for the SL30.
Forum: Glass Cockpit 06-18-2018, 04:59 PM
Replies: 93
Views: 58,430
Posted By BobTurner
The above is correct. Just about the only real...

The above is correct. Just about the only real use of the OBS button on the 430 is to keep the gps from advancing to the next waypoint, when in a hold.
Your method of setting the OBS on the SL30...
Forum: COMM 06-17-2018, 03:52 PM
Replies: 11
Views: 731
Posted By BobTurner
You have some reason for concern. Hooking one...

You have some reason for concern. Hooking one mike to two transmitters will put the two bias resistors in parallel. This may affect the gain of the mike in some unpredictable way, although my guess...
Forum: RV General Discussion/News 06-17-2018, 03:42 PM
Replies: 12
Views: 974
Posted By BobTurner
Definitely IAS, since it ( stall speed in IAS) is...

Definitely IAS, since it ( stall speed in IAS) is independent of density altitude.
Forum: RV General Discussion/News 06-15-2018, 11:55 AM
Replies: 7
Views: 551
Posted By BobTurner
1. Here in the US the cheapest unit is around...

1. Here in the US the cheapest unit is around $700. Thatís a lot of chips.
2. They arenít foolproof. The problem of sheared antennas, etc., has never been solved.
3. The actual number of Ďsavesí -...
Forum: RV-10 06-15-2018, 10:15 AM
Replies: 29
Views: 3,050
Posted By BobTurner
Do you have the filler port inside the cabin? I...

Do you have the filler port inside the cabin? I think youíll want some sort of vapor recovery nozzle/seal (like at car gas stations) to keep from filling the cabin with fumes.
Forum: Glass Cockpit 06-14-2018, 10:15 PM
Replies: 19
Views: 1,554
Posted By BobTurner
This was a reference to the fact that at least...

This was a reference to the fact that at least one efis brand requires speed data to reach a solution for the AI horizon (GRT does not). It’s supposed to auto-detect pitot failure and auto-switch to...
Forum: RV-10 06-12-2018, 05:43 PM
Replies: 19
Views: 1,161
Posted By BobTurner
I extended the slot forward, about another 4”;...

I extended the slot forward, about another 4”; then installed a piece of sheet aluminum, with nut plates, with the original fiberglass cut out epoxied onto it, to fill the slot back to original. I...
Forum: VAF Classifieds (posts in here deleted after 30 days) 06-12-2018, 05:28 PM
Replies: 8
Views: 359
Posted By BobTurner
Okay, this is more complicated. I *think* that if...

Okay, this is more complicated. I *think* that if you had an in-flight efis failure, you would have to go into the SL-30ís setup menu and select a new OBS source, if you have an external CDI/OBS...
Forum: RV-10 06-12-2018, 04:17 PM
Replies: 5
Views: 501
Posted By BobTurner
Just a comment. Your mounting location provides a...

Just a comment. Your mounting location provides a very much less than ideal ground plane, with virtually no ground plane extending to the outboard side. For 1/4 wavelength antennas like this the...
Forum: Glass Cockpit 06-12-2018, 04:05 PM
Replies: 19
Views: 1,554
Posted By BobTurner
Itís been said many times, 99% of the builders...

Itís been said many times, 99% of the builders like the equipment they chose. Iím no different. For the record, I put in (8 years ago) an HX, an HS, and the EIS, interfaced to a Trio autopilot,...
Forum: VAF Classifieds (posts in here deleted after 30 days) 06-12-2018, 02:58 PM
Replies: 8
Views: 359
Posted By BobTurner
In case you werenít aware, the SL30 has an RS232...

In case you werenít aware, the SL30 has an RS232 digital output, making it compatible with virtually every EFIS out there. In addition, you can set the OBS setting on the SL30 itself, so an indicator...
Forum: Safety 06-12-2018, 02:44 PM
Replies: 16
Views: 2,176
Posted By BobTurner
Bad physics

Itís the force-momentum per second-that needs to equal the aircraft weight. This could be a large air mass moving slowly, or a smaller air mass moving quicker. Same as standing behind a jet or prop...
Forum: RV-10 06-12-2018, 02:36 PM
Replies: 31
Views: 1,414
Posted By BobTurner
Have you looked at the temperature, say, 10...

Have you looked at the temperature, say, 10 minutes after shutdown? With only convective airflow, and no fuel flow, I wonder if the temperature peaks some time after shutdown?
Forum: RV-10 06-12-2018, 02:18 PM
Replies: 19
Views: 1,161
Posted By BobTurner
Absolutely disagree. My -10 had a heavy left...

Absolutely disagree. My -10 had a heavy left wing. Sighting down the top surface of the wing, the forward part of the left aileron was about 1/16Ē high, compared to the right aileron. I lowered the...
Forum: RV-10 06-11-2018, 07:51 PM
Replies: 13
Views: 854
Posted By BobTurner
If your doors donít seal perfectly, air will be...

If your doors donít seal perfectly, air will be pulled out of the cabin since the air outside the rounded upper fuselage is at slightly lower pressure. The cabin air is replaced by cold air pulled in...
Forum: RV-10 06-11-2018, 12:43 PM
Replies: 19
Views: 1,161
Posted By BobTurner
+1 Rigging is amazingly sensitive to the vertical...

+1
Rigging is amazingly sensitive to the vertical height of the ailerons. With all surfaces neutral, stand in front of the wing and sight down the top surface. Your sight line should flow smoothly...
Forum: RV-10 06-10-2018, 04:52 PM
Replies: 31
Views: 1,414
Posted By BobTurner
That’s what I do. Per plans location; it shows 1...

That’s what I do. Per plans location; it shows 1 gal/hr higher with the boost pump on during takeoff. This means the fuel totalizer function is slightly conservative, e.g., if it shows 10 gal...
Forum: RV General Discussion/News 06-10-2018, 04:44 PM
Replies: 4
Views: 668
Posted By BobTurner
I think under normal circumstances it makes no...

I think under normal circumstances it makes no difference. But remember the whole reason for going up is to keep water out. If while washing you direct a hose on the port, how high up will the water...
Forum: COMM 06-10-2018, 02:51 PM
Replies: 6
Views: 356
Posted By BobTurner
Well, here’s what I would do: Pull the radio and...

Well, here’s what I would do:
Pull the radio and inspect the com audio out pin (as well as audio ground, if there is one) and make sure they’re not bent.
Re-insert the radio in the tray, make sure...
Forum: ADS-B 06-10-2018, 02:01 PM
Replies: 7
Views: 757
Posted By BobTurner
Where is the altitude data coming from? Make sure...

Where is the altitude data coming from? Make sure the baud rate and format are compatible at both ends.
Forum: ADS-B 06-10-2018, 01:51 PM
Replies: 7
Views: 757
Posted By BobTurner
We need to know if you are trying to Ďsniffí the...

We need to know if you are trying to Ďsniffí the altitude data from the transponder transmissions (not the best) or if the altitude data is hard-wired into the adsb box (best).
Forum: RV General Discussion/News 06-10-2018, 01:48 PM
Replies: 7
Views: 766
Posted By BobTurner
Engine was not installed.

Engine was not installed.
Forum: COMM 06-10-2018, 10:35 AM
Replies: 6
Views: 356
Posted By BobTurner
Odds are itís a wiring issue. If you know someone...

Odds are itís a wiring issue. If you know someone who has a working SL-30, swap radios and see what happens.
Nav audio has no squelch. Noise should go away if you turn down the volume.
Forum: COMM 06-09-2018, 10:53 PM
Replies: 6
Views: 356
Posted By BobTurner
Can you hear nav audio?

Can you hear nav audio?
Forum: RV General Discussion/News 06-09-2018, 03:10 PM
Replies: 7
Views: 766
Posted By BobTurner
I winched mine up a tilt-bed backwards, using the...

I winched mine up a tilt-bed backwards, using the tail tie-down ring.
Make sure the truck bed is wide enough for the -10. My local rent-a-truck place had two tilt beds, but only one was wide enough.
Forum: RV-9/9A 06-08-2018, 03:58 PM
Replies: 5
Views: 829
Posted By BobTurner
Unless the soft field was also short, Iíd avoid...

Unless the soft field was also short, Iíd avoid full power at a standstill. Too likely to pull small stones into the prop. Also, if itís really soft, you donít want to bog down. Runup on firm ground,...
Forum: ADS-B 06-08-2018, 12:31 PM
Replies: 11
Views: 647
Posted By BobTurner
1. Get the waiver 2. Pull the transponder out of...

1. Get the waiver
2. Pull the transponder out of the airplane.
The inspector canít inspect whatís not there. And since you have the waiver to fly outside mode C required airspace, he canít claim itís...
Forum: ADS-B 06-07-2018, 07:20 PM
Replies: 11
Views: 647
Posted By BobTurner
+1 My home field (KLVK) is one mile inside the...

+1
My home field (KLVK) is one mile inside the mode C veil around SFO. Not only will they give you a mode C waiver on request; if you go up to the tower and sign a waiver form, you can make it...
Forum: RV-12 06-07-2018, 01:43 PM
Replies: 15
Views: 990
Posted By BobTurner
Even though my guy is based at my airport, he...

Even though my guy is based at my airport, he throws his test equipment in the back of a truck and drives to my hangar. I’d say he spends about 15 minutes setting up; another 5-10 minutes chasing...
Forum: ADS-B 06-07-2018, 01:27 PM
Replies: 11
Views: 647
Posted By BobTurner
And placard it as ďinopĒ. Unless youíre located...

And placard it as ďinopĒ. Unless youíre located within a transponder-required airspace (class B, C, 30 mile mode C veil). Your DAR should be okay with this.
Forum: ADS-B 06-07-2018, 09:52 AM
Replies: 11
Views: 647
Posted By BobTurner
Needs to be installed, on the aircraft. A lot of...

Needs to be installed, on the aircraft. A lot of the issues are coax, encoder/altitude, antenna, etc. There are many tech’s with portable equipment, they’ll come to you.
Forum: RV-10 06-06-2018, 04:22 PM
Replies: 20
Views: 1,931
Posted By BobTurner
I have just a few hours in an AA-5; builder/owner...

I have just a few hours in an AA-5; builder/owner of a -10. As a previous post said, the extra power, and attention to drag reduction, make the -10 the hands down winner. You need to be aware that...
Forum: RV General Discussion/News 06-04-2018, 07:21 PM
Replies: 3
Views: 425
Posted By BobTurner
The red light means it cannot detect a battery at...

The red light means it cannot detect a battery at the other end. Check your connections, wires, any fuses,...
Or test it on a known good car battery, see if the red light goes away.
Forum: RV General Discussion/News 06-04-2018, 03:13 PM
Replies: 11
Views: 1,515
Posted By BobTurner
So, do those getting these as part of their...

So, do those getting these as part of their OpLimits have to still display them within view somehow?
Are those of us with traditional pink slips now excused from displaying them?
Forum: ADS-B 06-02-2018, 02:59 PM
Replies: 21
Views: 951
Posted By BobTurner
Some years ago the faa asked pilots to run in ALT...

Some years ago the faa asked pilots to run in ALT mode 100% of the time, including on the ground.
The weak link imho with UATs that rely on sniffers is that the transponder needs to be interogated,...
Forum: RV-10 06-01-2018, 07:55 PM
Replies: 42
Views: 2,782
Posted By BobTurner
As Mark implied, you always need to check the cg...

As Mark implied, you always need to check the cg on a -10 at the expected landing configuration. If you start close to a limit, the cg moves closer (or past) the limit as you burn gas.
Forum: RV General Discussion/News 06-01-2018, 07:11 PM
Replies: 22
Views: 2,025
Posted By BobTurner
+1 on Gallagher.

+1 on Gallagher.
Forum: RV General Discussion/News 06-01-2018, 07:00 PM
Replies: 36
Views: 4,173
Posted By BobTurner
The state regularly sends inspectors to airports...

The state regularly sends inspectors to airports to gather N numbers of aircraft tied down, and they somehow get the N numbers of hangared airplanes, too. They don’t care where the owner lives; if...
Forum: RV General Discussion/News 05-31-2018, 04:56 PM
Replies: 22
Views: 2,025
Posted By BobTurner
I can answer the very last question: A LODA...

I can answer the very last question: A LODA (faa-speak: Letter of Deviation Authority) is required if you use your airplane for compensation or hire. But the faa presumes that you donít rent the...
Forum: RV General Discussion/News 05-31-2018, 03:04 PM
Replies: 4
Views: 358
Posted By BobTurner
As above, yes, as long as no compensation is...

As above, yes, as long as no compensation is involved. However, expect a sizable up-tick in your insurance cost.
Forum: VAF Classifieds (posts in here deleted after 30 days) 05-30-2018, 05:34 PM
Replies: 4
Views: 651
Posted By BobTurner
Course Deviation Indicator, or the thingy that...

Course Deviation Indicator, or the thingy that shows fly left/fly right. Not needed if you have a compatible efis.
Forum: RV-10 05-27-2018, 09:38 PM
Replies: 42
Views: 2,782
Posted By BobTurner
No, thatís not the way it works.

No, thatís not the way it works.
Forum: COMM 05-27-2018, 05:51 PM
Replies: 10
Views: 1,063
Posted By BobTurner
The crossfeed issue is easily delt with if the...

The crossfeed issue is easily delt with if the radio has an audio mute input (e.g., Garmin 430 series). Just run an extra wire from the #1 PTT line to the #2 audio mute input, and similarly for #2...
Forum: COMM 05-25-2018, 04:39 PM
Replies: 4
Views: 889
Posted By BobTurner
Since youíre paralleling the mikes, that means...

Since youíre paralleling the mikes, that means both will be Ďhotí whenever either person talks - increased background noise.
Forum: COMM 05-24-2018, 05:06 PM
Replies: 72
Views: 8,117
Posted By BobTurner
The little ball at the end adds some capacitance,...

The little ball at the end adds some capacitance, so the antenna will resonate at a bit shorter length than given by the formula for a given frequency.
Forum: Autopilots 05-23-2018, 07:53 PM
Replies: 32
Views: 2,325
Posted By BobTurner
I see in your sub-line that you have a Trio. It...

I see in your sub-line that you have a Trio. It uses a clutch that can slip under enough force - a better solution, imho, than using a shear screw for the same function.
Forum: California 05-23-2018, 06:28 PM
Replies: 17
Views: 1,313
Posted By BobTurner
They value the plane at everything you paid for...

They value the plane at everything you paid for it - including the sales tax!
Forum: COMM 05-23-2018, 12:42 PM
Replies: 72
Views: 8,117
Posted By BobTurner
If your antenna is mounted properly, as you said...

If your antenna is mounted properly, as you said it was earlier, left, right, front, back should all be the same.
The tech checks the transponder on 1090.
Forum: RV-10 05-22-2018, 04:53 PM
Replies: 5
Views: 637
Posted By BobTurner
The front of my uncompressed seats looks the...

The front of my uncompressed seats looks the same, about 6 1/2Ē above the metal. The low point, about 5Ē in front of the aft edge of the seat, looks closer to 4Ē, uncompressed.
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