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Search: Posts Made By: rmartingt
Forum: RV General Discussion/News Yesterday, 12:03 PM
Replies: 11
Views: 276
Posted By rmartingt
You don’t need the specific part number Van’s...

You don’t need the specific part number Van’s carries. The tank sealant meets AMS-S-8802 (aka MIL-S-8802); any sealant that meets the spec will work.

You’ll see some number like B-1/2 or B-2 at...
Forum: RV General Discussion/News 10-11-2018, 09:23 AM
Replies: 37
Views: 3,141
Posted By rmartingt
"Just make the tanks bigger" is a lot more easily...

"Just make the tanks bigger" is a lot more easily done on a slow-build 4 or 6. Much more difficult on a later kit because the spar is pre-punched for rivets outboard.

Separate leadung edge tanks a...
Forum: RV General Discussion/News 10-08-2018, 07:45 AM
Replies: 18
Views: 2,823
Posted By rmartingt
It will be interesting to see how this all pans...

It will be interesting to see how this all pans out. I'm trying to be optimistic, but after seeing how the Part 23 rewrite fell out and comparing it to the Part 23 Reorganization ARC report, and...
Forum: Steam Gauges 10-06-2018, 05:08 AM
Replies: 6
Views: 1,068
Posted By rmartingt
I suspect sales probably dropped to almost...

I suspect sales probably dropped to almost zero... almost everyone is installing an EFIS of some kind now.
Forum: Interiors 10-05-2018, 03:39 AM
Replies: 96
Views: 51,575
Posted By rmartingt
How much space is there between an installed pair...

How much space is there between an installed pair of Aviator seats in an Rv-7? Looking at an easily-removable armrest/console and don't want to make it too wide...
Forum: RV-10 10-01-2018, 10:39 AM
Replies: 42
Views: 2,511
Posted By rmartingt
This statement is not true. ... Even more so,...

This statement is not true.
...
Even more so, what wears an engine out is not the continuous at-power operation, but the duty cycles themselves. If operated at a continuous rpm and load, just about...
Forum: RV-10 09-30-2018, 03:00 PM
Replies: 42
Views: 2,511
Posted By rmartingt
Not the "car engines can't hold an airplane duty...

Not the "car engines can't hold an airplane duty cycle" canard again <facepalm>

The reason "traditional" airplane engines tend to be fairly successful when installed by amateur builders, yet we...
Forum: RV General Discussion/News 09-24-2018, 03:52 PM
Replies: 66
Views: 6,163
Posted By rmartingt
It's worth noting that AP disconnect on the...

It's worth noting that AP disconnect on the stick/wheel is basically a requirement for certified aircraft.

Part 23 (yes, I know Part 23 has been redone... )


Part 25:
Forum: RV General Discussion/News 09-23-2018, 07:52 AM
Replies: 66
Views: 6,163
Posted By rmartingt
My plan right now is Infinity grips, as...

My plan right now is Infinity grips, as follows:

Trigger = Com 1 PTT
Hat = Pitch/roll trim
RH thumb = flaps
LH thumb = Com 1 flip/flop (very useful in formation flight)
Lower thumb = AP...
Forum: Southeast 09-23-2018, 03:34 AM
Replies: 11
Views: 582
Posted By rmartingt
Thanks again for all of the responses! I'll be...

Thanks again for all of the responses! I'll be in touch via PM over the next couple weeks as I try to sort out times.
Forum: Southeast 09-21-2018, 12:03 PM
Replies: 11
Views: 582
Posted By rmartingt
I know Vic through my dad, so next time I see him...

I know Vic through my dad, so next time I see him I'll ask about it. Thanks!


I've spoken to Ed online and seen him before, but we've never actually spoken in person. Maybe I'll drop him a...
Forum: Southeast 09-21-2018, 07:03 AM
Replies: 11
Views: 582
Posted By rmartingt
GRT, G3X Touch, or AFS near Savannah/Atlanta?

I'll be nearing the point in the next six months or so where I'll need to decide on an avionics package, but I'd like to check out the alternatives "in person" and without a sales guy around if I can...
Forum: VAF Classifieds (posts in here deleted after 30 days) 09-18-2018, 03:11 PM
Replies: 16
Views: 1,563
Posted By rmartingt
Is there a particular reason you’re selling?

Is there a particular reason you’re selling?
Forum: VAF Classifieds (posts in here deleted after 30 days) 09-17-2018, 02:01 PM
Replies: 7
Views: 1,106
Posted By rmartingt
Interested in the Archer nav antenna...

Interested in the Archer nav antenna...
Forum: RV General Discussion/News 09-17-2018, 08:33 AM
Replies: 8
Views: 459
Posted By rmartingt
I did think about repurposing the mixture on a...

I did think about repurposing the mixture on a 3-lever for a cowl flap or oil cooler. Still considering that. I'd still like a plate that isn't labeled, though.

The only other airplane I'd be...
Forum: RV General Discussion/News 09-17-2018, 05:32 AM
Replies: 8
Views: 459
Posted By rmartingt
Custom/non-standard throttle quadrants?

I’m currently planning on a center console-mounted throttle quadrant (the console is partly to hide extra wiring, plumbing, and EFI fuel pump etc.). But using EFI, I have no need for a mixture...
Forum: Safety 09-16-2018, 06:12 AM
Replies: 26
Views: 2,967
Posted By rmartingt
I wish there was a like button sometimes... I'm...

I wish there was a like button sometimes...

I'm building an electrically-dependent airplane (EFI and glass, eventually IFR). One thing I'm trying hard to do is eliminate single-point failures on...
Forum: RV General Discussion/News 09-14-2018, 07:54 AM
Replies: 3
Views: 629
Posted By rmartingt
MOSAIC rulemaking initiative?

Ran across this one...
Forum: Alternative Engines 09-11-2018, 02:57 AM
Replies: 23
Views: 2,747
Posted By rmartingt
It’s not a question of “is it possible”, it’s a...

It’s not a question of “is it possible”, it’s a question of “can we afford it”. A brand new engine that can slot into place where a Lycoming went but burns Jet won’t be cheap to develop, and even if...
Forum: RV Building Tips/Techniques 09-07-2018, 04:13 AM
Replies: 9
Views: 917
Posted By rmartingt
I'm confused, because I have a quick-change...

I'm confused, because I have a quick-change spring on my rivet gun. It looks like this:
https://www.yardstore.com/media/catalog/product/cache/c687aa7517cf01e65c009f6943c2b1e9/1/4/14011_2.jpg

I...
Forum: RV General Discussion/News 08-31-2018, 01:17 PM
Replies: 29
Views: 2,282
Posted By rmartingt
Timely thread, thanks! I just flipped the...

Timely thread, thanks! I just flipped the fuselage over and the structural parts are moving quickly; I'm rapidly approaching the point where I'll need to start doing systems installations.

The...
Forum: Interiors 08-25-2018, 03:51 PM
Replies: 3
Views: 390
Posted By rmartingt
That's sort of what I'm going for, really... but...

That's sort of what I'm going for, really... but I wanted to fit-check myself and my wife to be sure.


Good to know!


Oh... yeah... there are default positions in the plans :o


That's good...
Forum: Interiors 08-25-2018, 12:12 PM
Replies: 3
Views: 390
Posted By rmartingt
Seat back location and Classic Aero seats...

I've just flipped the canoe and will soon be to the point of putting in the seat backs and hinge attachments (and the rudder pedals; I delayed that step so I can build up and place them while sitting...
Forum: RV General Discussion/News 08-24-2018, 01:37 PM
Replies: 78
Views: 10,456
Posted By rmartingt
I had a very similar experience, in an airplane...

I had a very similar experience, in an airplane with minimum day-VFR instrumentation (and no attitude indicator).
Forum: RV General Discussion/News 08-21-2018, 06:12 PM
Replies: 28
Views: 2,817
Posted By rmartingt
FWIW that's basically what I do for ground ops,...

FWIW that's basically what I do for ground ops, takeoff, and landing in Dad's -6. I find that having my feet up, with maybe my heels lightly touching the carpet, and the bottom bar at the front of...
Forum: My RV Build Project 08-21-2018, 06:04 PM
Replies: 22
Views: 14,051
Posted By rmartingt
Thanks everyone! Things are progressing nicely...

Thanks everyone! Things are progressing nicely and the fuselage is now ready to flip. I just need a cradle to set it in... so I'll work on drawing that up and work on fabricating it this week.

Now...
Forum: My RV Build Project 08-17-2018, 04:56 AM
Replies: 22
Views: 14,051
Posted By rmartingt
Wow, so I've been a bit of a slacker at updating...

Wow, so I've been a bit of a slacker at updating the thread... but in my defense, we've had a heck of a year or two. A few of the guys at FFC have probably heard some of this...

Starting in 2017,...
Forum: RV-7/7A 08-16-2018, 03:52 AM
Replies: 7
Views: 928
Posted By rmartingt
Thumbs up I thought about it but was concerned about oil...

I thought about it but was concerned about oil resistance and weatherproofness(?). However, some further research says it looks like it's actually pretty good for that sort of thing. I'll need...
Forum: RV-7/7A 08-15-2018, 10:51 AM
Replies: 7
Views: 928
Posted By rmartingt
Looks like a consensus then! I'll proceed with...

Looks like a consensus then!

I'll proceed with priming underneath and then I'll install it except for the cowl hinge line. I plan to seal the edges with proseal (to prevent moisture/oil intrusion...
Forum: RV-7/7A 08-13-2018, 01:26 PM
Replies: 7
Views: 928
Posted By rmartingt
Yes, forgot to mention that it'll be backed by...

Yes, forgot to mention that it'll be backed by 1/16 ceramic fiber insulation.
Forum: RV-7/7A 08-13-2018, 12:34 PM
Replies: 7
Views: 928
Posted By rmartingt
Question Cowl exit heat shield... when to rivet?

As of five minutes ago all of the riveting is finished and my fuselage is about ready to flip over. Before I flip this canoe, is there any reason I shouldn't go ahead and install the belly heat...
Forum: RV-14 08-06-2018, 06:50 PM
Replies: 55
Views: 12,967
Posted By rmartingt
Yes, you should use level flight as indicated by...

Yes, you should use level flight as indicated by zero feet per minute and/or your velocity vector (the little green airplane symbol in the upper picture) on the horizon line. The yellow waterline...
Forum: RV General Discussion/News 08-06-2018, 02:13 PM
Replies: 359
Views: 77,731
Posted By rmartingt
In addition to being 100lb or so heavier than a...

In addition to being 100lb or so heavier than a Lycoming, I have a sneaking suspicion that this engine probably costs more on its own than a complete and nicely-outfitted RV.

I don't think you'll...
Forum: Safety 07-26-2018, 04:59 PM
Replies: 69
Views: 17,508
Posted By rmartingt
I don't see why a numerical readout is necessary....

I don't see why a numerical readout is necessary. So long as you can repeatably hit your target AOA, it doesn't matter whether there's a numerical readout, a tick mark on a scale, a certain number of...
Forum: Traditional Aircraft Engines 07-14-2018, 10:02 AM
Replies: 10
Views: 1,671
Posted By rmartingt
Depends on what you're flying for. If you're...

Depends on what you're flying for. If you're just up piddling around to enjoy the pretty local scenery or the sunset, why burn more gas than you have to?

One of the nice things about the RV is that...
Forum: Electrical Systems 07-09-2018, 03:47 AM
Replies: 7
Views: 877
Posted By rmartingt
I understand the need for a couple of breakers...

I understand the need for a couple of breakers with fuses (e.g. for alternator field)... but why throw breaker switches into the mix?
Forum: RV General Discussion/News 06-23-2018, 04:40 AM
Replies: 68
Views: 10,913
Posted By rmartingt
I think I've just decided on a lighting provider...

I think I've just decided on a lighting provider ;)

One question though--your manual is very specific about not using a power supply that puts out more than 14V. Will it be a problem to use this in...
Forum: RV General Discussion/News 06-16-2018, 03:38 AM
Replies: 31
Views: 3,374
Posted By rmartingt
Someone out there makes the clamps with a locking...

Someone out there makes the clamps with a locking tab that holds them together for you. Company's name is Umpco. I asked about ordering some but they want big orders--a homebuilder is small...
Forum: RV General Discussion/News 06-10-2018, 03:51 AM
Replies: 17
Views: 1,908
Posted By rmartingt
Well, Part 21, but yes. Part 21 Subpart A covers...

Well, Part 21, but yes. Part 21 Subpart A covers all that. And as you note, things don't technically have to have a TSO or PMA to go on a certified aircraft, but they do have to be approved...
Forum: Electrical Systems 06-09-2018, 06:59 PM
Replies: 261
Views: 18,307
Posted By rmartingt
Thanks, John! I've been musing over that very...

Thanks, John! I've been musing over that very idea and you've saved me some work. Nice pictures!
Forum: Electronic Ignition Systems 06-09-2018, 12:14 PM
Replies: 15
Views: 1,277
Posted By rmartingt
Do you happen to know of any with a second power...

Do you happen to know of any with a second power input terminal? I'd rather not have both power feeds coming into the same stud.

Otherwise, that's my plan. I'm trying to find one with a removable...
Forum: Safety 06-03-2018, 10:15 AM
Replies: 20
Views: 2,456
Posted By rmartingt
For engine fires, I would think the money and...

For engine fires, I would think the money and effort would be better spent improving your firewall and the penetrations, as DanH has posted about, and rehearsing your engine fire memory actions. ...
Forum: RV-8/8A 05-30-2018, 05:42 PM
Replies: 6
Views: 626
Posted By rmartingt
The AN507 is a 100 degree countersink. You...

The AN507 is a 100 degree countersink. You almost never see 82 degree countersink hardware on aircraft.

http://www.everyspec.com/MS-Specs/MS2/MS24000-MS24999/MS24693K_7909/
Forum: Electrical Systems 05-28-2018, 04:22 AM
Replies: 10
Views: 1,454
Posted By rmartingt
My goal isn't "keep the engine running till...

My goal isn't "keep the engine running till there's nothing left in the backup battery". It's "keep the engine running as long as possible on the battery". It's an important distinction.

It...
Forum: Electrical Systems 05-26-2018, 10:23 AM
Replies: 261
Views: 18,307
Posted By rmartingt
Switched coils for the same reason as switched...

Switched coils for the same reason as switched magnetos--you can check and verify each one is working. However, that's for a four-cylinder; I don't know how the six-cylinder engines are set...
Forum: Alternative Engines 05-26-2018, 04:41 AM
Replies: 20
Views: 2,480
Posted By rmartingt
Their web site says different...[/QUOTE] The...

Their web site says different...[/QUOTE]

The ASTM standards for LSAs, and the FAA's restrictions on what can fly in the US under the Light Sport rule, are not entirely the same. The FAA's rules are...
Forum: Electrical Systems 05-23-2018, 05:11 AM
Replies: 261
Views: 18,307
Posted By rmartingt
What voltage you get down to is largely...

What voltage you get down to is largely irrelevant. LiFePo batteries don't have a constant voltage drop with use like a lead-acid style one will; their output voltage will stay relatively flat until...
Forum: RV General Discussion/News 05-20-2018, 03:47 AM
Replies: 32
Views: 3,506
Posted By rmartingt
Both of you should try sitting in the back for a...

Both of you should try sitting in the back for a bit before buying something tandem. I know after 30 minutes in the back of an -8, I was going nuts because I felt like my legs were trapped.

Some...
Forum: Electrical Systems 05-19-2018, 05:12 AM
Replies: 261
Views: 18,307
Posted By rmartingt
I'm the OP ;) Z-19 is one alternator, two...

I'm the OP ;)

Z-19 is one alternator, two batteries. If the alternator goes down, then you're down to the capacity of those two batteries to handle the engine and run everything else. I didn't...
Forum: RV General Discussion/News 05-19-2018, 03:48 AM
Replies: 32
Views: 3,506
Posted By rmartingt
My wife is not a pilot, but she does like to be...

My wife is not a pilot, but she does like to be involved. When I was deciding what to build (I wanted a 4) she said "if you want me to fly with you, I'm sitting next to you".

That made the...
Forum: RV-12 05-18-2018, 03:40 PM
Replies: 7
Views: 1,659
Posted By rmartingt
Assuming you're flying the same speeds... I'd...

Assuming you're flying the same speeds... I'd think that would be expected, with significantly more weight on the aircraft.
Forum: RV General Discussion/News 05-18-2018, 06:27 AM
Replies: 78
Views: 10,456
Posted By rmartingt
Homebuilts (in general) probably don't fly as...

Homebuilts (in general) probably don't fly as much IFR as certified aircraft. I know it's possible to have CFIT in VMC, too, but I'd expect most CFIT accidents to happen in IMC and/or night...
Forum: Electrical Systems 05-18-2018, 06:05 AM
Replies: 261
Views: 18,307
Posted By rmartingt
I don't think Dan's saying that we need the...

I don't think Dan's saying that we need the detailed wire-by-wire diagrams in this thread. For our purposes here, and for understanding the basics of the system, the simple block diagrams work well....
Forum: RV General Discussion/News 05-17-2018, 03:50 AM
Replies: 78
Views: 10,456
Posted By rmartingt
I think I remember Gash posting that he found it...

I think I remember Gash posting that he found it very useful when his windshield was covered in oil from a failed seal. And there's an ATC clip of a guy who had an engine failure (night IMC over...
Forum: RV-14 05-13-2018, 09:44 AM
Replies: 40
Views: 6,329
Posted By rmartingt
You're probably counting different things. I...

You're probably counting different things. I suspect Kyle is counting only riveting time, not drill/debur/dimple/clean/etc.

I remember staying up late helping my dad rivet his tanks in high...
Forum: Traditional Aircraft Engines 05-10-2018, 04:41 AM
Replies: 7
Views: 809
Posted By rmartingt
Preservative oil/grease for components?

I have a disassembled and tagged engine case and many internal components. Some of the components are in bags and I think the bags have been punctured. Even though they're in climate-controlled...
Forum: RV General Discussion/News 05-07-2018, 09:07 AM
Replies: 18
Views: 1,646
Posted By rmartingt
Insulate the ceiling and walls (but before that,...

Insulate the ceiling and walls (but before that, run all the electrical you think you might ever want). Then insulate the doors.

Then install a mini split heat pump. Best thing I ever did for our...
Forum: Fuel Injection Systems 05-06-2018, 06:59 AM
Replies: 24
Views: 2,161
Posted By rmartingt
Did some more thinking on how one could maybe get...

Did some more thinking on how one could maybe get a push system in place without making it too complicated.

Basic idea would be to have the pump in the tank or wing root and put the regulator right...
Forum: Safety 05-05-2018, 08:26 AM
Replies: 65
Views: 8,844
Posted By rmartingt
Where can I get me some of these Mk II eyeballs? ...

Where can I get me some of these Mk II eyeballs? I was only issued the Mk I series...

;)


And don't forget, you may have been the one with the mistuned radio :o
Forum: Safety 05-04-2018, 11:33 AM
Replies: 65
Views: 8,844
Posted By rmartingt
The FAA makes it so easy, when they tell you...

The FAA makes it so easy, when they tell you things like "we agree that rule doesn't make sense, and we don't know why that's the rule either, but it's been the rule for a long time so we aren't...
Forum: Fuel Injection Systems 05-04-2018, 09:47 AM
Replies: 24
Views: 2,161
Posted By rmartingt
I chewed over the idea of pumps in the tanks, but...

I chewed over the idea of pumps in the tanks, but it brought up a few complications. The return fuel would still require a selector valve to make sure it's going to the correct tank. A pump failure...
Forum: Safety 05-02-2018, 06:49 AM
Replies: 65
Views: 8,844
Posted By rmartingt
I'd go further and say that the use of...

I'd go further and say that the use of "experimental" in radio calls is useless and deprecated at this point. There's enough variety in homebuilts today that saying actual type is going to be a lot...
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