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Search: Posts Made By: RFSchaller
Forum: RV-12/RV-12iS 05-11-2021, 06:55 PM
Replies: 20
Views: 1,834
Posted By RFSchaller
Jim, Out of curiosity: how do the seams look? Do...

Jim,

Out of curiosity: how do the seams look? Do you overlap vinyl or use butt joints between vinyl sheets?

Iím not considering changing my paint, but I no nothing about the vinyl process and would...
Forum: RV-12/RV-12iS 05-11-2021, 06:49 PM
Replies: 146
Views: 7,950
Posted By RFSchaller
Russ, My understanding of the fuel system is...

Russ,

My understanding of the fuel system is that you are not just reducing fuel line temperature with recirc flow, we rely on boost pump discharge pressure too in order to prevent vapor lock....
Forum: RV-12/RV-12iS 05-11-2021, 06:42 PM
Replies: 3
Views: 987
Posted By RFSchaller
There is a half thickness AN washer available....

There is a half thickness AN washer available. Check Aircraft Spruce catalogue.
Forum: RV-12/RV-12iS 05-08-2021, 12:43 PM
Replies: 20
Views: 1,834
Posted By RFSchaller
I built a WAR FW-190 and painted it in the ďGreen...

I built a WAR FW-190 and painted it in the ďGreen HeartsĒ geschwader colors. The project took me 8 years. When the picture published in Kitplanes some guy wrote to me and started nitpicking the...
Forum: RV-12/RV-12iS 05-07-2021, 01:39 PM
Replies: 38
Views: 14,281
Posted By RFSchaller
Excellent demo. Not sure I would recommend it. If...

Excellent demo. Not sure I would recommend it. If anything had gone wrong I doubt the FAA would have been sympathetic to intentionally shutting down the engine for an impromptu test.

Chernobyl...
Forum: RV-12/RV-12iS 05-06-2021, 10:17 PM
Replies: 5
Views: 492
Posted By RFSchaller
I use a long hemostat to hold the bolt. An awl...

I use a long hemostat to hold the bolt. An awl has come in handy to center washers sometimes.
Forum: RV-12/RV-12iS 05-06-2021, 10:13 PM
Replies: 10
Views: 977
Posted By RFSchaller
Turner, True for S-LSA aircraft, but Seagullís...

Turner,

True for S-LSA aircraft, but Seagullís comment was about training in an E-LSA which is an experimental aircraft. As such to be legal the trainee must own the aircraft to make it legal to...
Forum: RV-12/RV-12iS 05-06-2021, 10:07 PM
Replies: 146
Views: 7,950
Posted By RFSchaller
80F! Jim, thatís balmy in PHX! All kidding aside...

80F! Jim, thatís balmy in PHX! All kidding aside I havenít experienced vapor lock symptoms below the upper 90s.

Rich
Forum: RV-12/RV-12iS 05-06-2021, 09:58 PM
Replies: 7
Views: 516
Posted By RFSchaller
I shouldnít tempt fate by saying this, but my...

I shouldnít tempt fate by saying this, but my original VDO fuel pressure sensor has been rock solid for 9 years and 1100 hrs. On the other hand I had to replace the oil pressure sensor. Then about...
Forum: RV-12/RV-12iS 05-05-2021, 09:43 PM
Replies: 10
Views: 977
Posted By RFSchaller
Unless things have changed instruction in an...

Unless things have changed instruction in an experimental for compensation can only be done if the person receiving the instruction owns the experimental aircraft. Otherwise you would need a letter...
Forum: RV-12/RV-12iS 05-05-2021, 09:36 PM
Replies: 5
Views: 492
Posted By RFSchaller
Iíve had luck with the magnet too.

Iíve had luck with the magnet too.
Forum: RV-12/RV-12iS 05-03-2021, 10:02 PM
Replies: 24
Views: 2,733
Posted By RFSchaller
Jim, thanks for the photos. Like they say one...

Jim, thanks for the photos. Like they say one picture is worth a thousand words.
Forum: RV-12/RV-12iS 05-03-2021, 09:59 PM
Replies: 146
Views: 7,950
Posted By RFSchaller
I hate climbing back into the baggage compartment...

I hate climbing back into the baggage compartment for annual when I inspect the pump. Iíve found that tossing a couple of bean bag chairs into the cockpit after I pull out the seats reduces the aches...
Forum: RV-12/RV-12iS 05-03-2021, 09:52 PM
Replies: 23
Views: 1,875
Posted By RFSchaller
Ron, Just like my statement about not trying it...

Ron,

Just like my statement about not trying it if I was below pattern altitude, there are always variables like wind and obstructions. Also remember practicing with an idling engine is not the same...
Forum: RV-12/RV-12iS 05-01-2021, 10:05 PM
Replies: 24
Views: 2,733
Posted By RFSchaller
Richard, Iím trying to figure out what ďbbĒs you...

Richard,

Iím trying to figure out what ďbbĒs you are talking about. My engine runs a little rough when I pull back the power for descent, so Iíd like to look at my carbs for this. Are the bbís on...
Forum: RV-12/RV-12iS 04-30-2021, 10:02 PM
Replies: 23
Views: 1,875
Posted By RFSchaller
I donít practice turn backs. My philosophy is if...

I donít practice turn backs. My philosophy is if you havenít reached pattern altitude pick a spot within45 degrees right or left of runway heading and go for it. Like anything that has to be tempered...
Forum: RV-12/RV-12iS 04-29-2021, 09:14 PM
Replies: 146
Views: 7,950
Posted By RFSchaller
Harking back to my courses on fluid flow the...

Harking back to my courses on fluid flow the vapor causes a lot of stuff to be going on: reduces average density, bubbles move faster than the fluid, and pressure drop increases in the two phase...
Forum: RV-12/RV-12iS 04-28-2021, 09:00 PM
Replies: 146
Views: 7,950
Posted By RFSchaller
Joe, I have never had an engine stumble, but I...

Joe,

I have never had an engine stumble, but I have had Bitc*@n Betty yelling in my ear about hi fuel flow and low fuel pressure until I turned on my boost pump. Thatís what you will likely get as...
Forum: RV-12/RV-12iS 04-27-2021, 11:55 PM
Replies: 146
Views: 7,950
Posted By RFSchaller
Jim, How are you instrumenting the fuel lines?...

Jim,

How are you instrumenting the fuel lines? Iím wondering if you are measuring engine compartment temps as opposed to fluid temperature which, given the insulating effect of the hose and fire...
Forum: RV-12/RV-12iS 04-27-2021, 08:19 PM
Replies: 37
Views: 3,708
Posted By RFSchaller
John, The comment on failure mechanism got me...

John,

The comment on failure mechanism got me thinking. The aircraft fuel systems I have seen (granted a limited sample) put the boost pump in series with the mechanical pump. When I built my first...
Forum: RV-12/RV-12iS 04-26-2021, 09:47 PM
Replies: 37
Views: 3,708
Posted By RFSchaller
John, I hope youíre wrong in the case of my 12...

John,

I hope youíre wrong in the case of my 12 and Cherokee! Why have a backup pump if it canít keep the fan turning? I am familiar with power plant fluid systems that employ booster pumps...
Forum: RV-12/RV-12iS 04-25-2021, 09:56 PM
Replies: 37
Views: 3,708
Posted By RFSchaller
Randy, The Nav Light circuit is completely...

Randy,

The Nav Light circuit is completely different from the AV fans. When I used the Nav Light switch to control the electric fuel pump I left the fans on the original power feed and used the...
Forum: RV-12/RV-12iS 04-24-2021, 10:06 PM
Replies: 41
Views: 8,862
Posted By RFSchaller
Scott, I have posted my reasoning many times. It...

Scott,

I have posted my reasoning many times. It appears there are two schools of thought that will never reconcile. I understand the argument for continuous running, but I have chosen a different...
Forum: RV-12/RV-12iS 04-24-2021, 10:02 PM
Replies: 28
Views: 1,940
Posted By RFSchaller
I always thought that thing up front was to cool...

I always thought that thing up front was to cool off the pilot. Donít believe it? Turn it off and watch the pilot sweat!😝
Forum: RV-12/RV-12iS 04-24-2021, 09:56 PM
Replies: 37
Views: 3,708
Posted By RFSchaller
Bob, I can tell you why I put it on a switch. I...

Bob,

I can tell you why I put it on a switch. I didnít like the idea of the electric pump failing during a flight and not knowing it until next ground operation ((best case) or the mechanical failed...
Forum: RV-12/RV-12iS 04-24-2021, 01:09 AM
Replies: 146
Views: 7,950
Posted By RFSchaller
It would be interesting to see how much net...

It would be interesting to see how much net positive suction head there is from tank level at fuel temps of 110F like we routinely see here in Phoenix summers. Even on those days I find turning on my...
Forum: RV-12/RV-12iS 04-24-2021, 12:54 AM
Replies: 41
Views: 8,862
Posted By RFSchaller
Iíve posted this info on several previous posts....

Iíve posted this info on several previous posts. My 12 is a day VFR machine, so it was a simple change to use the nav light switch and wiring as a means to control the electric fuel pump.
Forum: RV-12/RV-12iS 04-24-2021, 12:36 AM
Replies: 28
Views: 1,940
Posted By RFSchaller
You can put it on a switch and turn it off like I...

You can put it on a switch and turn it off like I do. 😁
Forum: RV-12/RV-12iS 04-22-2021, 09:49 PM
Replies: 7
Views: 1,157
Posted By RFSchaller
Turbulence, terrafirma and interstellar space -...

Turbulence, terrafirma and interstellar space - all bad for little airplanes!😝
Forum: RV-12/RV-12iS 04-22-2021, 09:45 PM
Replies: 19
Views: 1,380
Posted By RFSchaller
Iím a big proponent of ďif it ainít broke donít...

Iím a big proponent of ďif it ainít broke donít fix itĒ. I had my carbs overhauled at 500 hours and they swapped my choke assemblies. I had to disassemble and reassemble the carbs. Now at 1100 hours...
Forum: RV-12/RV-12iS 04-20-2021, 09:14 PM
Replies: 11
Views: 1,678
Posted By RFSchaller
No corrosion issues on either the original fork...

No corrosion issues on either the original fork or the replacement.
Forum: RV-12/RV-12iS 04-20-2021, 09:07 PM
Replies: 2
Views: 442
Posted By RFSchaller
Engineers have a term: good mechanical judgement....

Engineers have a term: good mechanical judgement. Sounds better than looks OK to me!😝
Forum: RV-12/RV-12iS 04-19-2021, 09:08 PM
Replies: 146
Views: 7,950
Posted By RFSchaller
Tony, Great idea. Simple yet elegant!

Tony,

Great idea. Simple yet elegant!
Forum: RV-12/RV-12iS 04-19-2021, 09:05 PM
Replies: 11
Views: 1,678
Posted By RFSchaller
Since I used to use wheel pants I never got...

Since I used to use wheel pants I never got around to painting it. I left it bare aluminum. In AZ corrosion is not a big issue.
Forum: RV-12/RV-12iS 04-19-2021, 11:39 AM
Replies: 3
Views: 560
Posted By RFSchaller
You can buy a cheap set at Home Depot. The HVAC...

You can buy a cheap set at Home Depot. The HVAC guys use gem to get ductwork slip joints together. Yo may want to cut off one of the fingers so it will give you a single ridge crease as opposed to a...
Forum: RV-12/RV-12iS 04-19-2021, 11:36 AM
Replies: 146
Views: 7,950
Posted By RFSchaller
Jim, Only the cylinder heads are water cooled. I...

Jim,

Only the cylinder heads are water cooled. I think a better approach would be a hinged cowl flap at the bottom aft end of the bottom cowling. That would probably cause stress on the cowling....
Forum: RV-12/RV-12iS 04-18-2021, 12:29 AM
Replies: 146
Views: 7,950
Posted By RFSchaller
Jim, Wonít that louver starve the cylinders from...

Jim,

Wonít that louver starve the cylinders from air cooling?

Rich
Forum: RV-12/RV-12iS 04-17-2021, 08:58 PM
Replies: 4
Views: 461
Posted By RFSchaller
Have you guys read about the UAVIONIX AV-30C? It...

Have you guys read about the UAVIONIX AV-30C? It uses an AHRS to determine deck angle and 3D GPS data to determine relative wind then calculates a derived angle of attack. Not as accurate as an AOA...
Forum: RV-12/RV-12iS 04-16-2021, 08:46 PM
Replies: 146
Views: 7,950
Posted By RFSchaller
To answer Jim Norcalís question: I rewired my...

To answer Jim Norcalís question: I rewired my Nav Light switch (I donít have lights) to be a fuel boost pump switch. I routinely secure the electric pump after reaching cruise altitude and turn it...
Forum: RV-12/RV-12iS 04-15-2021, 09:38 PM
Replies: 146
Views: 7,950
Posted By RFSchaller
Jim, what were the flight conditions? I have...

Jim, what were the flight conditions? I have experienced low fuel pressure/high fuel flow alarms on climb out in Phoenix summer when I secure my electric pump, but starting the electric pump has...
Forum: RV-12/RV-12iS 04-14-2021, 09:43 PM
Replies: 33
Views: 4,498
Posted By RFSchaller
I guess I missed that you were talking about an...

I guess I missed that you were talking about an RV-10 (it is an RV-12 forum, after all). My logic at 65K coverage is that at least I could buy another kit.
Forum: RV-12/RV-12iS 04-12-2021, 08:54 PM
Replies: 17
Views: 1,727
Posted By RFSchaller
You might try putting a slight twist in the fuse...

You might try putting a slight twist in the fuse blades. When I was a young Navy nuke reading the the core tech manual they discussed the tendency of control rods to vibrate in the coolant flow. It...
Forum: RV-12/RV-12iS 04-12-2021, 08:49 PM
Replies: 3
Views: 755
Posted By RFSchaller
Those rivets were a bear as I recall. I ended up...

Those rivets were a bear as I recall. I ended up using a rivet gun with an offset set.
Forum: RV-12/RV-12iS 04-12-2021, 08:45 PM
Replies: 33
Views: 4,498
Posted By RFSchaller
Oops! 1000 hrs in the 12. Makes a difference with...

Oops! 1000 hrs in the 12. Makes a difference with the insurance guys!
Forum: RV-12/RV-12iS 04-12-2021, 08:43 PM
Replies: 33
Views: 4,498
Posted By RFSchaller
Why such a huge hull coverage? I have 65K hull...

Why such a huge hull coverage? I have 65K hull coverage and a million liability for about 1K per year. I hold an ATP and MEII with 100 hrs in the 12. In the 80s when I got my PPL I was paying the...
Forum: RV-12/RV-12iS 04-10-2021, 10:19 PM
Replies: 19
Views: 1,158
Posted By RFSchaller
Jim, Your analysis would be correct if the flow...

Jim,

Your analysis would be correct if the flow rate through the screen was sufficiently high to flush off debris, but there is at best a trickle when you open the drain valve. I wish you were right...
Forum: RV-12/RV-12iS 04-08-2021, 09:31 PM
Replies: 33
Views: 4,498
Posted By RFSchaller
The best part is that a great looking blonde in a...

The best part is that a great looking blonde in a black bikini fished me out of the lake on to her speedboat. The story is much funnier now than it was 18 years ago floating in Lake Mohave a mile and...
Forum: RV-12/RV-12iS 04-08-2021, 02:49 PM
Replies: 13
Views: 1,600
Posted By RFSchaller
To each his own. I learned the half wind plus all...

To each his own. I learned the half wind plus all gust rule in type training at Continental. Itís always worked for me. Yes I do the same into a headwind. That way I have the same ground speed as a...
Forum: RV-12/RV-12iS 04-08-2021, 02:30 PM
Replies: 33
Views: 4,498
Posted By RFSchaller
I lost a seaplane when it got swamped on a rough...

I lost a seaplane when it got swamped on a rough water lake that I probably shouldnít have been on. I had liability only. When it came time to pop my life vest and get out I wasnít thinking about...
Forum: RV-12/RV-12iS 04-07-2021, 12:01 AM
Replies: 25
Views: 6,059
Posted By RFSchaller
Good on ya, Walt! Iím not that dedicated.😁

Good on ya, Walt! Iím not that dedicated.😁
Forum: RV-12/RV-12iS 04-06-2021, 09:24 PM
Replies: 19
Views: 1,158
Posted By RFSchaller
Boycotting Wicks for their lack of a stand on the...

Boycotting Wicks for their lack of a stand on the Georgia voting act?😝
Forum: RV-12/RV-12iS 04-06-2021, 09:22 PM
Replies: 25
Views: 6,059
Posted By RFSchaller
Very thorough, Walt. I used the TLAR METHOD (that...

Very thorough, Walt. I used the TLAR METHOD (that looks about right) with some Home Depot springs about 8 years ago, and they have served me well.
Forum: RV-12/RV-12iS 04-06-2021, 09:19 PM
Replies: 7
Views: 825
Posted By RFSchaller
Itís really important on pusher configurations...

Itís really important on pusher configurations where everything that comes loose goes through the prop. I used to have a Searey.
Forum: RV-12/RV-12iS 04-06-2021, 09:12 PM
Replies: 12
Views: 1,078
Posted By RFSchaller
I was in the habit of laying it on the wing when...

I was in the habit of laying it on the wing when I checked fuel level. Bad idea. It rolled back and jammed the aileron at the torque tube. I picked it up on the preflight control check. I donít do...
Forum: RV-12/RV-12iS 04-06-2021, 09:09 PM
Replies: 10
Views: 1,335
Posted By RFSchaller
Frank, the owner, had some medical issues...

Frank, the owner, had some medical issues recently. That probably accounts for the lack of response. He has a new partner who is on top of things. Try their phone again.
Forum: RV-12/RV-12iS 04-06-2021, 09:03 PM
Replies: 19
Views: 1,158
Posted By RFSchaller
From a long ago post: Wickís P/N USH-226-V75...

From a long ago post: Wickís P/N USH-226-V75 Gasket. $1.79 at the time of the post. Hope that works for you.
Forum: RV-12/RV-12iS 04-06-2021, 08:55 PM
Replies: 13
Views: 1,600
Posted By RFSchaller
Add half the steady wing velocity and all the...

Add half the steady wing velocity and all the gust to your final approach speed and it will help considerably. In your case 10G20 add 10+5=15 knots.
Forum: RV-12/RV-12iS 04-06-2021, 08:51 PM
Replies: 17
Views: 1,584
Posted By RFSchaller
Guilty as charged, but it was brand new...

Guilty as charged, but it was brand new prescription sunglasses. Fortunately in the case and found by my hangar neighbor.
Forum: RV-12/RV-12iS 04-05-2021, 12:27 AM
Replies: 5
Views: 781
Posted By RFSchaller
I always wondered how much the canopy would...

I always wondered how much the canopy would ďfloatĒ if the latch failed. Nice to file away and hopefully never experience!
Forum: RV-12/RV-12iS 04-05-2021, 12:24 AM
Replies: 8
Views: 1,008
Posted By RFSchaller
My dad also got me started in aviation when he...

My dad also got me started in aviation when he took me to my first CAP meeting as a 13 year old kid. 40 years later I got to give him a BFR. Aviation is definitely a fraternity/sorority.
Forum: RV-12/RV-12iS 04-03-2021, 09:40 PM
Replies: 13
Views: 1,480
Posted By RFSchaller
Thanks, Dave. The Skyview sounds amazing.

Thanks, Dave. The Skyview sounds amazing.
Forum: RV-12/RV-12iS 04-01-2021, 08:29 PM
Replies: 8
Views: 1,155
Posted By RFSchaller
I hope they are 100. It means Iím stronger than I...

I hope they are 100. It means Iím stronger than I thought!😝
Forum: RV-12/RV-12iS 04-01-2021, 08:27 PM
Replies: 13
Views: 1,480
Posted By RFSchaller
I still have the legacy 496 GPS and D180 that...

I still have the legacy 496 GPS and D180 that supports GPS NAV. Iím curious to know if the Skyview AP supports GPS Steering that anticipates turns as opposed to overshooting the turn point. I...
Forum: RV-12/RV-12iS 04-01-2021, 12:14 PM
Replies: 2
Views: 387
Posted By RFSchaller
It also helps to do a few brief runs after...

It also helps to do a few brief runs after filling and checking for air in the header tank on top of the engine and refilling after each run if needed. We used to perform pump sweeps in water cooling...
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