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Search: Posts Made By: BobbyLucas
Forum: RV-12/RV-12iS 10-14-2021, 04:08 AM
Replies: 659
Views: 576,952
Posted By BobbyLucas
Thumbs up Looking good!

Looking good!
Forum: RV-12/RV-12iS 08-20-2021, 05:42 AM
Replies: 15
Views: 2,197
Posted By BobbyLucas
Congratulations! I hope to be joining you next...

Congratulations! I hope to be joining you next year. Osh is the goal, but that's probably a bit optimistic.
Forum: RV-12/RV-12iS 08-14-2021, 09:58 AM
Replies: 5
Views: 1,486
Posted By BobbyLucas
That's awesome, thanks!

That's awesome, thanks!
Forum: RV-12/RV-12iS 08-06-2021, 08:48 AM
Replies: 11
Views: 1,544
Posted By BobbyLucas
I bought two cartridges but in hindsight wish I...

I bought two cartridges but in hindsight wish I had gone with the quart. Once you mix the cartridge you have to work reasonably fast, which I apparently did not. When the first cartridge started...
Forum: RV-12/RV-12iS 08-06-2021, 08:18 AM
Replies: 9
Views: 2,601
Posted By BobbyLucas
Well, it's bye-bye to #87. Van's is sending a...

Well, it's bye-bye to #87. Van's is sending a replacement engine, also a 100 Year Limited Edition.

Pics from #87 uncrating:
Forum: RV-12/RV-12iS 08-03-2021, 05:58 AM
Replies: 16
Views: 2,937
Posted By BobbyLucas
This is what I did, except I still put the sleeve...

This is what I did, except I still put the sleeve on before bending - I just trimmed it so that the tube could slide further into the bender. (I can't recall if I thought to try sliding the shortened...
Forum: RV-12/RV-12iS 07-29-2021, 03:15 PM
Replies: 9
Views: 2,601
Posted By BobbyLucas
Funny/irritating; potato/potahto I guess. ;) I...

Funny/irritating; potato/potahto I guess. ;)

I just hope I didn't get a Friday afternoon engine! :eek:
Forum: RV-12/RV-12iS 07-29-2021, 09:21 AM
Replies: 9
Views: 2,601
Posted By BobbyLucas
Thanks. :) Of course what I didn't mention is...

Thanks. :)

Of course what I didn't mention is that Rotax failed to properly secure the engine in its crate, allowing it to rock back and forth, pop out some shipping plugs, loose two exhaust stud...
Forum: RV-12/RV-12iS 07-28-2021, 11:37 AM
Replies: 9
Views: 2,601
Posted By BobbyLucas
I was thrilled to receive #87 yesterday. They...

I was thrilled to receive #87 yesterday. They also come with an extra 3 years of warranty.
Forum: RV-12/RV-12iS 07-26-2021, 08:07 AM
Replies: 16
Views: 2,204
Posted By BobbyLucas
Welcome Sean! I just went through this exact...

Welcome Sean!

I just went through this exact same decision. For my RV-12iS build, I bought the cheap Amazon crimper. It seems fine to me for the very few pins I've crimped so far. Not sure how much...
Forum: Glass Cockpit 07-23-2021, 06:31 AM
Replies: 31
Views: 6,546
Posted By BobbyLucas
Does this require a separate $10k+ GPS navigator...

Does this require a separate $10k+ GPS navigator as reported by AvWeb? :(

"Smart Glide requires at least one of Garminís latest GTN Xi-series navigators"
Forum: Glass Cockpit 07-22-2021, 09:17 AM
Replies: 31
Views: 6,546
Posted By BobbyLucas
Thumbs up Pretty sweet! Now if you can just tie into the...

Pretty sweet! Now if you can just tie into the Rotax FADEC we could have full Autoland, minus braking. :)

Or would we also need a throttle servo? Still doable, no?
Forum: RV-12/RV-12iS 07-20-2021, 12:58 PM
Replies: 5
Views: 1,204
Posted By BobbyLucas
Sorry in advance if this is too much nerd...

Sorry in advance if this is too much nerd detail... :o

Let's say the exhaust system has a normal mode, aka resonant frequency, at 97 Hz. (Actually, it has many many such modes at all sorts of...
Forum: RV-12/RV-12iS 07-20-2021, 08:00 AM
Replies: 5
Views: 1,204
Posted By BobbyLucas
Very interesting, thanks for sharing. Is dynamic...

Very interesting, thanks for sharing. Is dynamic prop balancing always done at WOT? Is there an "official" procedure somewhere I could check out?

Here's my take on what was observed...
If no...
Forum: RV-12/RV-12iS 07-17-2021, 06:47 AM
Replies: 4
Views: 1,083
Posted By BobbyLucas
Approximate measurements: Tailcone sans feathers:...

Approximate measurements:
Tailcone sans feathers: 39.5" x 34" x 107"
Lower fuselage: 44" x 21" x 91"
Forum: RV General Discussion/News 07-06-2021, 02:00 PM
Replies: 87
Views: 12,712
Posted By BobbyLucas
I guess tail strikes were a big issue with the...

I guess tail strikes were a big issue with the design. It was before my time, but I think my school had two incidents with insurance claims, first one was repairable, second was a total loss. (I...
Forum: RV General Discussion/News 07-06-2021, 11:27 AM
Replies: 87
Views: 12,712
Posted By BobbyLucas
Post Anyway... the real reason I'm posting in this...

Anyway... the real reason I'm posting in this thread again...

Opinions were asked for and opinions are being given.
I enjoy reading the diverse and even colorful opinions of everyone: students,...
Forum: RV General Discussion/News 07-06-2021, 11:22 AM
Replies: 87
Views: 12,712
Posted By BobbyLucas
As a low-time student, I'm generally in the...

As a low-time student, I'm generally in the "wrestling-a-pig" view of the 150/170 series vs the RVs for now. :p
But don't get me wrong, the colorful phrasing is just good-natured tongue-in-cheek; I...
Forum: RV-12/RV-12iS 07-02-2021, 10:42 AM
Replies: 18
Views: 4,068
Posted By BobbyLucas
Yup, cyclic/dynamic loading will stress the...

Yup, cyclic/dynamic loading will stress the entire structure to varying degrees, possibly leading to a fatigue crack, even in an area in compression statically. I just don't understand the statement...
Forum: RV-12/RV-12iS 07-02-2021, 08:26 AM
Replies: 18
Views: 4,068
Posted By BobbyLucas
Interesting. I have no welding background, but I...

Interesting. I have no welding background, but I would have guessed that compression would be the least stressed loading direction. I tried the googler for tension vs compression of welded joints but...
Forum: RV-12/RV-12iS 06-29-2021, 02:23 PM
Replies: 34
Views: 9,975
Posted By BobbyLucas
Thumbs down Add me to the list. Just found out the eight week...

Add me to the list. Just found out the eight week lead-time for the Avionics I ordered six weeks ago is now a 6 Month lead-time at best. :mad:
Forum: RV-12/RV-12iS 06-29-2021, 11:59 AM
Replies: 38
Views: 7,135
Posted By BobbyLucas
Mount accelerometer and phototachometer Run...

Mount accelerometer and phototachometer
Run engine and record data
Install test weight
Run engine and record data
Remove test weight and install recommended correction weight
Run engine and...
Forum: RV-12/RV-12iS 06-29-2021, 07:47 AM
Replies: 6
Views: 1,342
Posted By BobbyLucas
Are you referring to DuraBlack Laser Markable...

Are you referring to DuraBlack Laser Markable Aluminum? Any Pics?
Forum: RV-12/RV-12iS 06-28-2021, 09:51 AM
Replies: 38
Views: 7,135
Posted By BobbyLucas
"Somewhat arbitrary." ;) In theory, with a...

"Somewhat arbitrary." ;)

In theory, with a simple rotating single-plane imbalance (imagine a simple spinning disk on a short shaft sitting on your desk - not our airplanes) with no error in the...
Forum: RV-12/RV-12iS 06-23-2021, 10:05 AM
Replies: 13
Views: 2,761
Posted By BobbyLucas
I'm certainly no expert, but my impression is...

I'm certainly no expert, but my impression is that these graphs may not be one-size-fits-all-applications. The only ones I could find were simply described as "examples" or "typical" with no other...
Forum: RV-12/RV-12iS 06-23-2021, 07:19 AM
Replies: 13
Views: 2,761
Posted By BobbyLucas
F-01247C/D/E/F stabilator cables are 1/8 7X19,...

F-01247C/D/E/F stabilator cables are 1/8 7X19, but as pointed out, the correct way to use the chart is to find a curve that intersects the spec from Van's or interpolate between two curves. Based on...
Forum: RV-12/RV-12iS 06-17-2021, 01:33 PM
Replies: 10
Views: 2,123
Posted By BobbyLucas
Good to know, thanks for chiming in Scott. And I...

Good to know, thanks for chiming in Scott. And I agree, improper isolation can be worse than no isolation, depending on the failure mode.

P.S. Are isolators the permanent fix, or is there an update...
Forum: RV-12/RV-12iS 06-17-2021, 01:29 PM
Replies: 10
Views: 2,123
Posted By BobbyLucas
I asked if that was the case in my email to...

I asked if that was the case in my email to Van's.



I would assume so, but I'm still surprised it works and am curious from an engineering standpoint. Personally I'd still prefer to find a proper...
Forum: RV General Discussion/News 06-17-2021, 01:04 PM
Replies: 22
Views: 3,851
Posted By BobbyLucas
I somehow just saw this reply. I asked Alexa to...

I somehow just saw this reply. I asked Alexa to play his music... she started with Careless Whisper, then Billy Jean. So far so good!

Reminds me of a couple months ago when I came out of Kroger,...
Forum: RV-12/RV-12iS 06-17-2021, 12:21 PM
Replies: 10
Views: 2,123
Posted By BobbyLucas
Thanks for the link. Interesting that Garmin...

Thanks for the link. Interesting that Garmin calls out the cause as "acoustic noise energy." :rolleyes:

If you look at the CubCrafter's SB, they use a proper isolator.
Forum: RV-12/RV-12iS 06-17-2021, 07:45 AM
Replies: 10
Views: 2,123
Posted By BobbyLucas
Interesting. I'm sure Van's confirmed this fix...

Interesting. I'm sure Van's confirmed this fix before publishing, but it sure doesn't look like a very effective isolation scheme to me. Isn't the head of the screw touching the airframe bracket and...
Forum: RV-12/RV-12iS 06-17-2021, 07:13 AM
Replies: 38
Views: 7,135
Posted By BobbyLucas
It's somewhat arbitrary. You could use velocity,...

It's somewhat arbitrary. You could use velocity, acceleration, displacement, jerk, vibration dose value (VDV), furlongs per fortnight, etc. In my experience I would have expected acceleration units...
Forum: RV-12/RV-12iS 06-17-2021, 06:44 AM
Replies: 22
Views: 8,008
Posted By BobbyLucas
Interesting. Wouldn't the smaller hole be more...

Interesting. Wouldn't the smaller hole be more prone to blockages in-flight though?
Forum: RV-12/RV-12iS 06-13-2021, 10:54 AM
Replies: 24
IMC
Views: 4,648
Posted By BobbyLucas
This EAA/AvSport webinar answers the question:...

This EAA/AvSport webinar answers the question: https://avsport.org/webinars/videos/IFR_LSA.mp4

Long story short, SLSA is the only aircraft that cannot be directly certified (or approved or whatever)...
Forum: RV-12/RV-12iS 06-12-2021, 06:54 AM
Replies: 26
Views: 3,263
Posted By BobbyLucas
My 2 cents

There's absolutely no justification for a pneumatic squeezer on the -12 (Not to mention they are heavy and awkward imo, but some will disagree)
I love my Main Squeeze, it's super light and the cam...
Forum: RV-12/RV-12iS 06-09-2021, 09:11 AM
Replies: 24
IMC
Views: 4,648
Posted By BobbyLucas
I hear that... I switched to the -12 after...

I hear that... I switched to the -12 after completing ~60% of a -10 empennage and I don't think I could ever go back to bucking endless rivets. Maybe pulled CS rivets for the skins - dimpling can be...
Forum: RV-12/RV-12iS 06-02-2021, 12:00 PM
Replies: 2
Views: 1,041
Posted By BobbyLucas
Tailcone upper fairing scribe lines

Has anyone else come across scribe lines like this on the upper tailcone fairing? Click on pic to enlarge. And sorry, I'm not a photographer. :o

Response from Van's:

"Iím told the mold was...
Forum: RV-12/RV-12iS 06-01-2021, 06:46 AM
Replies: 8
Views: 1,321
Posted By BobbyLucas
I could swear there were at least one or two...

I could swear there were at least one or two places where l had to dimple where a squeezer wouldn't reach, but I could be losing my mind.

There are multiple solutions, but I prefer this bucking...
Forum: RV-12/RV-12iS 05-31-2021, 06:56 AM
Replies: 6
Views: 1,289
Posted By BobbyLucas
If Van's is agreeable, you can pay them the $10...

If Van's is agreeable, you can pay them the $10 and I can get the plans to you digitally.

If not, then just PM me your address and I can mail you my extra USB stick - I ended up with two.

And...
Forum: RV Building Tips/Techniques 05-29-2021, 08:07 AM
Replies: 52
Views: 6,471
Posted By BobbyLucas
Perfection can also be the enemy of progress, but...

Perfection can also be the enemy of progress, but I admit that the couple times I decided to repair something it only lasted a few days before I couldn't stand it anymore and replaced it anyway....
Forum: RV-12/RV-12iS 05-29-2021, 07:51 AM
Replies: 9
Views: 1,614
Posted By BobbyLucas
Possible, but unlikely. Never hurts to ask...

Possible, but unlikely. Never hurts to ask though. Just send an email to support. I got approval for re-powder coating the gear legs - not a big deal, but just wanted to confirm. When I asked about...
Forum: RV-12/RV-12iS 05-21-2021, 06:24 AM
Replies: 24
Views: 4,909
Posted By BobbyLucas
Update on earlier article I posted from Dan...

Update on earlier article I posted from Dan Johnson on new LSA/LPA rules:

https://bydanjohnson.com/better-news-on-proposed-lsa-regulation-clarifications-to-earlier-statements/
Forum: RV General Discussion/News 05-20-2021, 06:24 AM
Replies: 22
Views: 3,851
Posted By BobbyLucas
Wink When I was in elementary school we had a contest...

When I was in elementary school we had a contest to mount an egg in a cardboard box and have it survive a drop from the roof of the school. My solution was to suspend the egg in the middle of the box...
Forum: RV-12/RV-12iS 05-19-2021, 12:57 PM
Replies: 37
Views: 10,306
Posted By BobbyLucas
You can rotate the cleco to align the parts...

You can rotate the cleco to align the parts before you let go of the pliers!

When the plunger of the cleco is fully depressed there is sufficient friction force between the external body of the...
Forum: RV-12/RV-12iS 05-19-2021, 12:46 PM
Replies: 37
Views: 10,306
Posted By BobbyLucas
Your use of "release" refers to releasing the...

Your use of "release" refers to releasing the cleco. I specifically said "release the pliers," as in stop squeezing the pliers, as in let go. Put the cleco in the hole, release the pliers, parts...
Forum: RV-12/RV-12iS 05-19-2021, 11:23 AM
Replies: 37
Views: 10,306
Posted By BobbyLucas
"Pliers pulled" is a bit ambiguous to me. Does...

"Pliers pulled" is a bit ambiguous to me. Does "pulled" mean the pliers are still squeezed, or does it mean you've released the pliers and pulled them away from the cleco?

I would phrase it as...
Forum: RV-12/RV-12iS 05-19-2021, 11:08 AM
Replies: 24
Views: 4,909
Posted By BobbyLucas
You may want to read this recent article: "Spring...

You may want to read this recent article: "Spring 2021 Update on FAAís Proposed New Regulation for Light-Sport Aircraft & Light Personal...
Forum: RV General Discussion/News 05-18-2021, 07:14 AM
Replies: 22
Views: 3,851
Posted By BobbyLucas
Lol, I had no idea that was a thing! Now I gotta...

Lol, I had no idea that was a thing! Now I gotta find some samples...

Talk about thread drift. :D
Forum: RV General Discussion/News 05-17-2021, 08:36 AM
Replies: 22
Views: 3,851
Posted By BobbyLucas
This is an oversimplification and broad...

This is an oversimplification and broad generalization that only holds true in specific circumstances. The installed powerplant will have 6 rigid body modes which are a function of the MMOI of the...
Forum: RV General Discussion/News 05-17-2021, 06:27 AM
Replies: 22
Views: 3,851
Posted By BobbyLucas
As a long-time powertrain noise and vibration...

As a long-time powertrain noise and vibration engineer specializing in mounting systems, I can tell you this is a very deep and complex technical subject. For some light bedtime reading, try...
Forum: RV-12/RV-12iS 05-13-2021, 11:30 AM
Replies: 13
Views: 1,141
Posted By BobbyLucas
Talking I figured your ears would be ringing! ;)

I figured your ears would be ringing! ;)
Forum: RV General Discussion/News 05-13-2021, 11:01 AM
Replies: 87
Views: 12,712
Posted By BobbyLucas
I thought the same thing my first time in an RV...

I thought the same thing my first time in an RV after 17 hours of training in 152s and 172s. Felt like you could fly the thing with your pinky finger. I can't wait to restart training in my 12iS when...
Forum: RV-12/RV-12iS 05-13-2021, 10:54 AM
Replies: 13
Views: 1,141
Posted By BobbyLucas
I can't tell you how many are still valid and...

I can't tell you how many are still valid and page numbers have changed, etc. It is what it is.
Forum: RV-12/RV-12iS 05-13-2021, 10:49 AM
Replies: 13
Views: 1,141
Posted By BobbyLucas
Ah, so my link was useless? All I did was go to...

Ah, so my link was useless? All I did was go to his user profile and click on "Find all threads started by Mich48041."

Does this one...
Forum: RV-12/RV-12iS 05-13-2021, 10:38 AM
Replies: 13
Views: 1,141
Posted By BobbyLucas
Search the forum for "Gores" or...

Search the forum for "Gores" or "Mich48041."

https://vansairforce.net/community/search.php?searchid=49620407
Forum: RV-12/RV-12iS 05-13-2021, 10:35 AM
Replies: 13
Views: 1,141
Posted By BobbyLucas
Joe Gores put together an extensive list for the...

Joe Gores put together an extensive list for the original -12, much of which is still pertinent to the latest model. The best advice is to read ahead and think ahead before pulling a rivet, but I...
Forum: RV-12/RV-12iS 05-08-2021, 08:08 AM
Replies: 20
Views: 3,868
Posted By BobbyLucas
Thumbs up Jealous

Congrats! Looking good.
Forum: Glass Cockpit 04-30-2021, 08:33 AM
Replies: 437
Views: 156,528
Posted By BobbyLucas
Ah, I see now. Below are the modes that get...

Ah, I see now. Below are the modes that get activated for each AP control. Looks like Pitch Hold is the default when a lateral mode is selected. And "PIT" should be shown in the AFCS annunciation...
Forum: Glass Cockpit 04-30-2021, 07:52 AM
Replies: 437
Views: 156,528
Posted By BobbyLucas
I agree, that seems nonsensical. Have you...

I agree, that seems nonsensical. Have you contacted Garmin?

Reading the manual, it looks like there might be a workaround using the AP disconnect button to "pause" the autopilot:
Forum: RV-10 04-29-2021, 07:20 AM
Replies: 12
Views: 2,397
Posted By BobbyLucas
The vinyl wrap manufactures also make tint-wraps...

The vinyl wrap manufactures also make tint-wraps for windows, headlights, etc. I'm guessing they are just as flexible/moldable as their other wraps? I was thinking about this for my build. Has anyone...
Forum: RV-12/RV-12iS 04-27-2021, 09:50 AM
Replies: 659
Views: 576,952
Posted By BobbyLucas
Thank you sir. :)

Thank you sir. :)
Forum: RV-12/RV-12iS 04-26-2021, 10:19 AM
Replies: 659
Views: 576,952
Posted By BobbyLucas
Thank you. Yes, it's Flightline... black...

Thank you. Yes, it's Flightline... black UltraLeather with black suede inserts and orange accents. I'm very pleased how it came out and Abby was great to work with.
Forum: RV-12/RV-12iS 04-26-2021, 08:51 AM
Replies: 659
Views: 576,952
Posted By BobbyLucas
Test fit of the interior!...

Test fit of the interior! :D

https://i.imgur.com/yNubpqPl.jpg
https://i.imgur.com/KLrFEsEl.jpg
https://i.imgur.com/phXKm0Jl.jpg
Forum: Glass Cockpit 04-19-2021, 12:10 PM
Replies: 437
Views: 156,528
Posted By BobbyLucas
I second this. RV-12iS build is still in process,...

I second this. RV-12iS build is still in process, but G3X system has been ordered. I just hope my counterpart has the same preferences as me.
Showing results 1 to 64 of 307

 
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