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Search: Posts Made By: RFSchaller
Forum: RV-12/RV-12iS Yesterday, 12:50 PM
Replies: 8
Views: 1,398
Posted By RFSchaller
I probably lost a knot or two, but honestly I...

I probably lost a knot or two, but honestly I didnít notice any speed change.
Forum: RV-12/RV-12iS Yesterday, 12:43 PM
Replies: 6
Views: 493
Posted By RFSchaller
I recommend doing the ROTAX Line Maintenance and...

I recommend doing the ROTAX Line Maintenance and Heavy Maintenance courses put on by ROTAX through Lockwood, CPS and others. Each is two days long and will give you the knowledge and confidence to...
Forum: RV-12/RV-12iS Yesterday, 12:33 PM
Replies: 7
Views: 855
Posted By RFSchaller
I just dip it with a length of translucent brake...

I just dip it with a length of translucent brake hose, put my thump over the end and see what the level is when I pull it out. I calibrated mine during initial tank fill at 5. 10, 15 and 20 gallons....
Forum: RV-12/RV-12iS 02-17-2020, 01:39 PM
Replies: 2
Views: 697
Posted By RFSchaller
John, Why did you change flywheels? Was it to...

John,

Why did you change flywheels? Was it to address an issue or just an upgrade. If the latter it seems it validates the old rule ďIf it ainít broke donít fix it.Ē

Rich
Forum: RV-12/RV-12iS 02-17-2020, 01:23 PM
Replies: 8
Views: 1,398
Posted By RFSchaller
I took my wheel pants off after I saw a 12 with a...

I took my wheel pants off after I saw a 12 with a flat tire and realized what would happen to the pants. I also got tired of the hassle of removing the front half to add air. I was never able to make...
Forum: RV-12/RV-12iS 02-13-2020, 10:41 PM
Replies: 87
Views: 13,409
Posted By RFSchaller
Iíve thought about replacing my 396 with an Aera....

Iíve thought about replacing my 396 with an Aera. I swapped the 396 in when the 496 needed repair. Since I have the 496 spare and the 396 operates so well it is hard for me to justify the cost and...
Forum: RV-12/RV-12iS 02-12-2020, 08:14 PM
Replies: 148
Views: 15,425
Posted By RFSchaller
Thanks, Greg, for a complete and definitive...

Thanks, Greg, for a complete and definitive answer. Vanís is a class act, and Iím glad I picked them for my build choice.
Forum: RV-12/RV-12iS 02-12-2020, 11:25 AM
Replies: 148
Views: 15,425
Posted By RFSchaller
Bob, After your question on my post I went back...

Bob,
After your question on my post I went back and reread a lot of the thread to see if I had missed something. What Iím not clear on is did the failed gear leg failure initiate at the predicted...
Forum: RV-12/RV-12iS 02-10-2020, 07:41 PM
Replies: 148
Views: 15,425
Posted By RFSchaller
Since Joe opened this door, Iíll add a question:...

Since Joe opened this door, Iíll add a question: Did the revised FEA predict an interior wall circumferential crack like the one that was found in the failed gear leg without a preexisting flaw? We...
Forum: RV-12/RV-12iS 02-08-2020, 09:00 PM
Replies: 57
Views: 6,551
Posted By RFSchaller
Thatís a heartbreaker, Jim.

Thatís a heartbreaker, Jim.
Forum: RV-12/RV-12iS 02-08-2020, 08:57 PM
Replies: 12
Views: 1,513
Posted By RFSchaller
I know this is a jinx saying this, but my...

I know this is a jinx saying this, but my original sensor has had no issues in 8 years and 950 hours (bound to break now that I said that). I did, however, have issues with my oil pressure sensor so...
Forum: RV-12/RV-12iS 02-06-2020, 09:45 PM
Replies: 148
Views: 15,425
Posted By RFSchaller
Always thought ďcertificatedĒ referred to having...

Always thought ďcertificatedĒ referred to having a type certificate not airworthiness certificate, so I donít see how EAB, ELSA or SLSA could be considered ďcertificatedĒ.
Forum: RV-12/RV-12iS 02-03-2020, 11:06 PM
Replies: 148
Views: 15,425
Posted By RFSchaller
Greg, Being an engineer I have a geeky question....

Greg,

Being an engineer I have a geeky question. Everything Iíve learned makes me expect a crack to initiate on the outside radius of a bend, so when you said the accident failure initiated on the...
Forum: RV-12/RV-12iS 02-03-2020, 10:49 PM
Replies: 5
Views: 619
Posted By RFSchaller
Iím with Scott on this one: why remove it if itís...

Iím with Scott on this one: why remove it if itís a no never mind. Every maintenance activity carries a risk of screwing up something, so why remove one?
Forum: RV-12/RV-12iS 02-02-2020, 08:53 PM
Replies: 31
Views: 2,883
Posted By RFSchaller
I use a piece of the nylon brake line to sound my...

I use a piece of the nylon brake line to sound my tank. Itís easy to push down the filler neck and gives a clear sounding. I calibrated it when I filled the tank the first time.
Forum: RV-12/RV-12iS 01-31-2020, 06:08 PM
Replies: 3
Views: 789
Posted By RFSchaller
I figure there are only so many times you can...

I figure there are only so many times you can operate any valve before either the stem or seat leaks, so I only close it for maintenance or if there is an emergency.
Forum: RV-12/RV-12iS 01-30-2020, 11:20 PM
Replies: 148
Views: 15,425
Posted By RFSchaller
Thanks, Greg. You are creating a lot of good will...

Thanks, Greg. You are creating a lot of good will for the mothership by being so open.

I never would have thought the crack would start on the inside wall.
Forum: RV-12/RV-12iS 01-29-2020, 09:08 PM
Replies: 148
Views: 15,425
Posted By RFSchaller
Without a photo of the failure itís difficult to...

Without a photo of the failure itís difficult to visualize why crack initiation canít be determined visually at annual inspection. Any insight on that?
Forum: RV-12/RV-12iS 01-28-2020, 08:37 PM
Replies: 148
Views: 15,425
Posted By RFSchaller
Just reread the SB and realized the SLSA serial...

Just reread the SB and realized the SLSA serial number format is different.
Forum: RV-12/RV-12iS 01-28-2020, 08:32 PM
Replies: 148
Views: 15,425
Posted By RFSchaller
The leg replacement SB lists applicable serial...

The leg replacement SB lists applicable serial number as 12080 and previous. Mine is 120402. Is there a typo in the SB? Should it be 120080 or 120800?
Forum: RV-12/RV-12iS 01-27-2020, 07:54 PM
Replies: 14
Views: 2,266
Posted By RFSchaller
Dale, Have you considered replacing the worn...

Dale,

Have you considered replacing the worn rivets? Wonít fix the wear problem, but at least you will be starting over with full strength rivets.

Rich
Forum: RV-12/RV-12iS 01-26-2020, 07:38 PM
Replies: 27
Views: 2,487
Posted By RFSchaller
I carry a large K-Bar type knife from Harbor...

I carry a large K-Bar type knife from Harbor Freight. Good for nasty passengers too!😜
Forum: RV-12/RV-12iS 01-26-2020, 07:35 PM
Replies: 11
Views: 958
Posted By RFSchaller
Eight years and almost 1000 hours later epoxy...

Eight years and almost 1000 hours later epoxy still holds mine firmly in place.
Forum: RV-12/RV-12iS 01-22-2020, 08:28 PM
Replies: 15
Views: 1,252
Posted By RFSchaller
I have a dual setup with D180 and D100. After...

I have a dual setup with D180 and D100. After setting the MAGINT and MAGINC (Iím working from memory on the titles) values my compass swing is dead on. My D180 reads 0 Kts at rest while my D100 can...
Forum: RV-12/RV-12iS 01-19-2020, 08:52 PM
Replies: 5
Views: 962
Posted By RFSchaller
If itís the clearance I think you are referring...

If itís the clearance I think you are referring to you want to be sure there is no interference between the bow and instrument panel when closing the canopy.

One thing you will find is that it takes...
Forum: RV-12/RV-12iS 01-17-2020, 07:39 PM
Replies: 13
Views: 1,213
Posted By RFSchaller
Bob, Itís inconvenient now. Itís REALLY...

Bob,

Itís inconvenient now. Itís REALLY inconvenient later. In your situation Iíd do it now.

In my situation I donít want to screw up my paint job until necessary.


Rich
Forum: RV-12/RV-12iS 01-17-2020, 07:30 PM
Replies: 10
Views: 1,477
Posted By RFSchaller
That PT result looks convincing, but you may want...

That PT result looks convincing, but you may want to sand off the powder coat and repeat it on bare metal in the remote chance itís not a crack in the base metal.
Forum: RV-12/RV-12iS 01-17-2020, 07:22 PM
Replies: 12
Views: 1,513
Posted By RFSchaller
Sounds like your sensor is dying. Itís nice...

Sounds like your sensor is dying. Itís nice having so much instrumentation when it works, but there seem to be a lot of failures that send us down rabbit holes.
Forum: RV-12/RV-12iS 01-16-2020, 10:55 PM
Replies: 13
Views: 1,213
Posted By RFSchaller
950 hours since March 2012 and no Smokey rivets....

950 hours since March 2012 and no Smokey rivets. I bought the doubler kit and keep it in my tool chest in case I ever need it.
Forum: RV-12/RV-12iS 01-14-2020, 07:55 PM
Replies: 3
Views: 664
Posted By RFSchaller
Be careful checking for return flow with the...

Be careful checking for return flow with the electric fuel pump. I expected it to be barely bubbling but it was squirting out when I was troubleshooting a high fuel flow indication a few years ago.
Forum: RV-12/RV-12iS 01-14-2020, 07:50 PM
Replies: 8
Views: 1,228
Posted By RFSchaller
A little penetrating oil may come in handy if...

A little penetrating oil may come in handy if itís stubborn.
Forum: RV-12/RV-12iS 01-07-2020, 09:06 PM
Replies: 15
Views: 1,764
Posted By RFSchaller
I do what a Dale posted. Plugs look good at...

I do what a Dale posted. Plugs look good at annual. As a rough guess Iíd say I have burned AVGAS between 5% and 10% of the time in almost 1000 hours
Forum: RV-12/RV-12iS 01-06-2020, 12:15 AM
Replies: 34
Views: 8,297
Posted By RFSchaller
A couple of years ago I took the ROTAX...

A couple of years ago I took the ROTAX maintenance courses and there were a couple of mechanics who maintained drones in the class. They said they routinely operated drones with the 912ULS at 18 and...
Forum: RV-12/RV-12iS 01-06-2020, 12:05 AM
Replies: 14
Views: 1,774
Posted By RFSchaller
Iím not averse to modifications, but it seems...

Iím not averse to modifications, but it seems that without a detailed design basis of both the airframe and engine it would be hard to make a valid evaluation of the consequences of these...
Forum: RV-12/RV-12iS 01-01-2020, 08:47 PM
Replies: 11
Views: 3,216
Posted By RFSchaller
My friend is about 6í2Ē and finds that pulling...

My friend is about 6í2Ē and finds that pulling out the foam wedge under the seat cushion gives sufficient clearance to the canopy. Might try that first.
Forum: RV-12/RV-12iS 12-29-2019, 08:07 PM
Replies: 21
Views: 3,885
Posted By RFSchaller
You can get a box of various sizes pretty cheap...

You can get a box of various sizes pretty cheap at Harbor Freight.
Forum: RV-12/RV-12iS 12-21-2019, 07:50 PM
Replies: 22
Views: 4,024
Posted By RFSchaller
Have you guys worked through EAA or AOPA? One...

Have you guys worked through EAA or AOPA? One thing I have heard is that once you get a quote it prejudices others, but that might be urban legend. I have insured five experimentals (3 EAB, 1 ELSA...
Forum: RV-12/RV-12iS 12-19-2019, 08:02 PM
Replies: 28
Views: 6,510
Posted By RFSchaller
Did the rivet head show any signs of being...

Did the rivet head show any signs of being drilled out? It may a remnant from the SB compliance or one that was replaced during construction.

If those three rivet holes without rivets are in...
Forum: RV-12/RV-12iS 12-15-2019, 08:11 PM
Replies: 5
Views: 798
Posted By RFSchaller
The pressure sensor was a connection issue for...

The pressure sensor was a connection issue for me. The temperature indication issue I had affected both oil T and CHT indications. It was solved by Dynon replacing my EMS board.
Forum: RV-12/RV-12iS 12-15-2019, 08:03 PM
Replies: 3
Views: 719
Posted By RFSchaller
I have similar play. If you can squeeze in a thin...

I have similar play. If you can squeeze in a thin washer between the stick and bracket where the pivot bolt passes through the stick it will help. I really donít notice it in flight.
Forum: RV-12/RV-12iS 12-14-2019, 07:57 PM
Replies: 5
Views: 798
Posted By RFSchaller
I had the same issue. First time it was a failed...

I had the same issue. First time it was a failed pressure sensor. Second time I ended up replacing the sensor lead FWF to fix the issue, so it was a bad connection somewhere. Before I replaced the...
Forum: RV-12/RV-12iS 12-13-2019, 10:18 PM
Replies: 7
Views: 2,179
Posted By RFSchaller
Wow, guess I should have read closer! Oh well,...

Wow, guess I should have read closer! Oh well, every blog needs at least one crazy uncle character! Glad to be of use!😝
Forum: RV-12/RV-12iS 12-13-2019, 10:06 PM
Replies: 22
Views: 4,024
Posted By RFSchaller
In the early 90s I had about 1,000 hours total...

In the early 90s I had about 1,000 hours total time with no HP/Complex sign off. I bought a Yak 52. My choices were $2,000 a year for liability and hull coverage or $300 for just liability. At the...
Forum: RV-12/RV-12iS 12-10-2019, 10:18 PM
Replies: 7
Views: 2,179
Posted By RFSchaller
Iíve never missed the ability to prime. The only...

Iíve never missed the ability to prime. The only hard starting I ever experienced was when a shop swapped my right and left ďchokeĒ assemblies, and when I tried a cold start without ďchokeĒ.
Forum: RV-12/RV-12iS 11-21-2019, 08:23 PM
Replies: 11
Views: 1,337
Posted By RFSchaller
Larry, that was my thought too, but you...

Larry, that was my thought too, but you articulated better than me.

Rich
Forum: RV-12/RV-12iS 11-19-2019, 10:21 PM
Replies: 11
Views: 1,337
Posted By RFSchaller
From what I remember from the Rotax course the...

From what I remember from the Rotax course the imbalance issue is most critical at low RPM where the butterfly valves in the carburetors are nearly shut. Once you exceed about 3500 RPM the...
Forum: RV-12/RV-12iS 11-19-2019, 10:12 PM
Replies: 30
Views: 3,246
Posted By RFSchaller
The SLSA repairman course is 120 hours. The ELSA...

The SLSA repairman course is 120 hours. The ELSA course is 16 hours. You still have to apply to the FAA for the certificate based on the course completion.
Forum: RV-12/RV-12iS 11-18-2019, 10:18 PM
Replies: 10
Views: 1,495
Posted By RFSchaller
Have you thought about Teflon tape?

Have you thought about Teflon tape?
Forum: RV-12/RV-12iS 11-18-2019, 10:17 PM
Replies: 11
Views: 1,337
Posted By RFSchaller
Dave, I thought the same thing, but then I...

Dave,

I thought the same thing, but then I thought if the imbalance was bad enough to cause rough running the balance tube capacity is being exceeded so if taps were properly placed it should show...
Forum: RV-12/RV-12iS 11-18-2019, 07:49 PM
Replies: 15
Views: 1,614
Posted By RFSchaller
Bob, Itís easy to do a few known weight checks...

Bob,

Itís easy to do a few known weight checks in the 150-300 lb range if you are that concerned.

Rich
Forum: RV-12/RV-12iS 11-17-2019, 08:12 PM
Replies: 15
Views: 1,614
Posted By RFSchaller
ďReadingĒ not ďearringĒ. Donít ya love...

ďReadingĒ not ďearringĒ. Donít ya love spellcheck!🧐
Forum: RV-12/RV-12iS 11-17-2019, 08:11 PM
Replies: 15
Views: 1,614
Posted By RFSchaller
I used bathroom scales. I had three and took...

I used bathroom scales. I had three and took three readings rotating the scales so that I had one earring from each scale at each wheel. Then I averaged the three readings at each position for the...
Forum: RV-12/RV-12iS 11-16-2019, 10:36 PM
Replies: 10
Views: 1,180
Posted By RFSchaller
I think Joe makes a good point. The regs make it...

I think Joe makes a good point. The regs make it pretty clear, but from an engineering standpoint the threaded shank that extends beyond the nutplate doesnít do anything for you. License it and then...
Forum: RV-12/RV-12iS 11-12-2019, 09:26 PM
Replies: 14
Views: 2,355
Posted By RFSchaller
Recently I was chasing an erratic oil pressure...

Recently I was chasing an erratic oil pressure indication. I replaced the sensor and the oil pressure regulator poppet. I finally ended up replacing the sensor lead between the sensor and firewall to...
Forum: RV-12/RV-12iS 11-10-2019, 04:42 PM
Replies: 16
Views: 2,782
Posted By RFSchaller
Thanks, Joe.

Thanks, Joe.
Forum: RV-12/RV-12iS 11-10-2019, 04:37 PM
Replies: 7
Views: 776
Posted By RFSchaller
Did you bend the float wire so that the float...

Did you bend the float wire so that the float touches the tank bottom when it hits the mechanical stop? Mine touches the tank bottom when it hits the lower stop, so it hits the upper mechanical stop...
Forum: RV-12/RV-12iS 11-10-2019, 04:31 PM
Replies: 8
Views: 1,000
Posted By RFSchaller
I have the same issue because I extended the...

I have the same issue because I extended the fiberglass canopy trim to cover the cavity where the canopy bolts attach. If done exactly as shown in the plans you will have access, but I opted for a...
Forum: RV-12/RV-12iS 11-09-2019, 08:49 PM
Replies: 16
Views: 2,782
Posted By RFSchaller
Scott, Iíve never heard of cavitation in a...

Scott, Iíve never heard of cavitation in a positive displacement pump. Iíd like to dig into that just for my own personal education. Is there a Rotax document that talks about that?

Rich
Forum: RV-12/RV-12iS 11-09-2019, 08:41 PM
Replies: 9
Views: 1,762
Posted By RFSchaller
I think ballistic parachutes and auto land are...

I think ballistic parachutes and auto land are great safety advances, but I do worry about buttons I donít want passengers to mess with. I worked in the management of nuclear power plants for 35...
Forum: RV-12/RV-12iS 11-09-2019, 08:34 PM
Replies: 8
Views: 1,295
Posted By RFSchaller
Have you tried Harbor Freight or Amazon?

Have you tried Harbor Freight or Amazon?
Forum: RV-12/RV-12iS 10-31-2019, 07:01 PM
Replies: 9
Views: 1,920
Posted By RFSchaller
Why are you using Loctite? The lock huts should...

Why are you using Loctite? The lock huts should be adequate. Are you using it on the crash arch? I Have had the crash arch fillet head screws back out some.
Forum: RV-12/RV-12iS 10-29-2019, 08:12 PM
Replies: 8
Views: 1,575
Posted By RFSchaller
I just filled mine with RTV to prevent corrosion.

I just filled mine with RTV to prevent corrosion.
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