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Search: Posts Made By: RFSchaller
Forum: RV-12/RV-12iS 02-13-2019, 08:32 PM
Replies: 75
Views: 7,974
Posted By RFSchaller
My floats were replaced at 500 hour overhaul of...

My floats were replaced at 500 hour overhaul of the carbs, but the originals still pass the weight test, so I keep them as spares.
Forum: RV-12/RV-12iS 02-13-2019, 12:50 AM
Replies: 15
Views: 1,572
Posted By RFSchaller
Come on guys! Let this be the one refuge from...

Come on guys! Let this be the one refuge from politics!😝
Forum: RV-12/RV-12iS 02-12-2019, 12:00 AM
Replies: 15
Views: 1,572
Posted By RFSchaller
I took a negotiation course about 25 years ago....

I took a negotiation course about 25 years ago. One of the exercises was for our group of trainees to sell shares of stock to another group. The rules were that the buyers had an undisclosed amount...
Forum: RV-12/RV-12iS 02-10-2019, 08:30 PM
Replies: 5
Views: 1,009
Posted By RFSchaller
Swiss Army knife, Gives me a way to justify it to...

Swiss Army knife, Gives me a way to justify it to the wife!😜
Forum: RV-12/RV-12iS 02-05-2019, 11:43 PM
Replies: 11
Views: 1,419
Posted By RFSchaller
Andrew, The west coast shop who overhauled my...

Andrew,

The west coast shop who overhauled my carbs did replace the needles and floats, but frankly I was not happy with them. They managed to swap my right and left choke assemblies which made...
Forum: RV-12/RV-12iS 02-05-2019, 11:37 PM
Replies: 2
Views: 929
Posted By RFSchaller
I always wondered why we canít use a card for...

I always wondered why we canít use a card for 100%. Donít they want us to get the frequent flyer points?😝
Forum: RV-12/RV-12iS 02-05-2019, 11:32 PM
Replies: 11
Views: 2,285
Posted By RFSchaller
When I wired my fuel pump to the unused nav light...

When I wired my fuel pump to the unused nav light switch I wired the old fuel pump power to a cigarette lighter socket on the bracket that supports the ELT antenna. Itís handy for powering a portable...
Forum: RV-12/RV-12iS 02-05-2019, 11:27 PM
Replies: 39
Views: 4,847
Posted By RFSchaller
Jim, My experience is that the sensor float...

Jim,

My experience is that the sensor float travel does not span the entire height of the tank, so if you bend the float wire to bottom out at the tank bottom I agree with your statement of accuracy...
Forum: RV-12/RV-12iS 02-04-2019, 08:22 PM
Replies: 11
Views: 1,419
Posted By RFSchaller
Andrew, I had my carbs overhauled at about 500...

Andrew, I had my carbs overhauled at about 500 hours.

Rich
Forum: RV-12/RV-12iS 02-03-2019, 09:04 PM
Replies: 11
Views: 1,419
Posted By RFSchaller
Oops! I meant 5200. Math in public overloads my...

Oops! I meant 5200. Math in public overloads my aging brain!😱😝
Forum: RV-12/RV-12iS 02-02-2019, 09:04 PM
Replies: 11
Views: 1,419
Posted By RFSchaller
Fuel Consumption

What are you guys seeing for fuel consumption at cruise? Iíve got a little over 800 hrs on my 912ULS and have seen the the burn rate creep up from4.5 GPH to 5.1 GPH at 4200 RPM AND 22Ē MAP over the...
Forum: RV-12/RV-12iS 01-29-2019, 08:02 PM
Replies: 8
Views: 825
Posted By RFSchaller
I put rubber channel on the edge of the wing...

I put rubber channel on the edge of the wing skin. Still looks great after 7 years. You can get it from Aircraft Spruce. The cross section is a U with about 1/2Ē wide and a 1/16Ē center gap.
Forum: Propellers 01-28-2019, 08:16 PM
Replies: 71
Views: 12,065
Posted By RFSchaller
Thanks for letting us know. Was there any...

Thanks for letting us know. Was there any evidence of impact damage from FOD, or any vibration issues during your flights?
Forum: RV-12/RV-12iS 01-27-2019, 07:43 PM
Replies: 8
Views: 772
Posted By RFSchaller
If one carburetor is running leaner than the...

If one carburetor is running leaner than the other it would cause that side to run hotter since the balance tube doesnít do much at cruise RPM. But that wouldnít cause spiking.
Forum: RV-12/RV-12iS 01-22-2019, 08:15 PM
Replies: 8
Views: 772
Posted By RFSchaller
Iím on my third EGT probe at 816 hr TTAF. The...

Iím on my third EGT probe at 816 hr TTAF. The first one failed at about 260 hours. Second was a faulty replacement part that was bad from the day I put it in. The third has over 650 hours on it. The...
Forum: RV-12/RV-12iS 01-19-2019, 09:01 PM
Replies: 16
Views: 2,297
Posted By RFSchaller
Or just rivet on a conventional trim tab after...

Or just rivet on a conventional trim tab after certification like I did. I also put them on the flaperons. Old school, but makes adjustments easy.
Forum: RV-12/RV-12iS 01-17-2019, 12:23 PM
Replies: 16
Views: 2,093
Posted By RFSchaller
With regard to the back window I would agree that...

With regard to the back window I would agree that the newer molded one will probably last for the life of the plane, but the older flat lexan windows had a fair amount of residual stress due to...
Forum: RV-12/RV-12iS 01-13-2019, 04:22 PM
Replies: 16
Views: 2,093
Posted By RFSchaller
My frame was a good fit. The fiber glass may be...

My frame was a good fit. The fiber glass may be intimidating to a beginner, but after you realize you can always sand it down and start over youíll see it is probably one of the most forgiving...
Forum: RV-12/RV-12iS 01-13-2019, 04:15 PM
Replies: 7
Views: 1,377
Posted By RFSchaller
Good idea, Ron!

Good idea, Ron!
Forum: RV-12/RV-12iS 01-08-2019, 11:01 PM
Replies: 17
Views: 1,981
Posted By RFSchaller
I have some concern in my Cherokee because it has...

I have some concern in my Cherokee because it has a heat muff around the exhaust, but less about my RV-12 due to the radiator heater. Having said that I did pick up a couple of CO monitors on Amazon....
Forum: RV-12/RV-12iS 01-07-2019, 08:03 PM
Replies: 30
Views: 5,998
Posted By RFSchaller
A technique I learned from the Yak 52 I had was...

A technique I learned from the Yak 52 I had was not to drag a brake, but use a series of short taps on the brake. I use that method for all but tight taxi turns and stop the turn by applying the...
Forum: RV-12/RV-12iS 01-07-2019, 07:55 PM
Replies: 33
Views: 3,421
Posted By RFSchaller
There are definitely two opposing strategies on...

There are definitely two opposing strategies on whether or not to put a switch on the electric fuel pump. I doubt either camp will convince the other. We should all just agree to disagree and move on.
Forum: RV-12/RV-12iS 01-01-2019, 08:24 PM
Replies: 7
Views: 1,377
Posted By RFSchaller
Thatís about twice what mine is at 1/16Ē or less....

Thatís about twice what mine is at 1/16Ē or less. I figure I might be able to put rubber U channel on it, but it would be tight.
Forum: RV-12/RV-12iS 12-31-2018, 08:00 PM
Replies: 39
Views: 4,847
Posted By RFSchaller
I did what Jim did and used flexible translucent...

I did what Jim did and used flexible translucent tubing. Although the shape of the tank isnít a uniform cube I found that once youíre past the sloped tank floor it was pretty much one gallon to the...
Forum: RV-12/RV-12iS 12-29-2018, 08:10 PM
Replies: 16
Views: 2,779
Posted By RFSchaller
Mark check your PMs. There are at least three...

Mark check your PMs. There are at least three other RV-12s on the field.

Rich
Forum: RV-12/RV-12iS 12-29-2018, 08:05 PM
Replies: 53
Views: 10,121
Posted By RFSchaller
I have the same issue with the float hitting the...

I have the same issue with the float hitting the upper stop at 17 gallons. You could always bend the float wire to read 20 gal at the top of the tank, but I prefer to have accurate level indication...
Forum: RV-12/RV-12iS 12-29-2018, 07:57 PM
Replies: 6
Views: 985
Posted By RFSchaller
My old high school friend is about 6í2Ē. When he...

My old high school friend is about 6í2Ē. When he flies with me he pulls the wedge out that goes under the seat cushion and that seems to work.
Forum: RV-12/RV-12iS 12-29-2018, 11:24 AM
Replies: 16
Views: 1,775
Posted By RFSchaller
I used commercial drill bits and picked one that...

I used commercial drill bits and picked one that made a hole that allowed the machine screw to turn freely (no stress on the plex from an interference fit). The biggest thing to prevent plex cracking...
Forum: RV-12/RV-12iS 12-27-2018, 09:45 PM
Replies: 13
Views: 1,287
Posted By RFSchaller
Iím with Jim. The designs are similar enough that...

Iím with Jim. The designs are similar enough that I think both groups of builders can learn valuable lessons from each other.
Forum: RV-12/RV-12iS 12-27-2018, 09:39 PM
Replies: 53
Views: 10,121
Posted By RFSchaller
Talking You mean I may have been right!? ó- Well even...

You mean I may have been right!? ó- Well even this blind squirrel occasionally gets a nut!:D
Forum: RV-12/RV-12iS 12-26-2018, 10:45 AM
Replies: 33
Views: 3,421
Posted By RFSchaller
I have a switch. The lowest Iíve seen without...

I have a switch. The lowest Iíve seen without cavitation on just the mechanical pump is just above 3 psi. With cavitation in hot Phoenix summers fuel pressure has taken a nosedive, but recovered to...
Forum: RV-12/RV-12iS 12-26-2018, 10:44 AM
Replies: 33
Views: 3,421
Posted By RFSchaller
I have a switch. The lowest Iíve seen without...

I have a switch. The lowest Iíve seen without cavitation on just the mechanical pump is just above 3 psi. With cavitation in hot Phoenix summers fuel pressure has taken a nosedive, but recovered to...
Forum: RV-12/RV-12iS 12-24-2018, 10:34 PM
Replies: 10
Views: 1,454
Posted By RFSchaller
Back when I had a Yak-52 I remember reading about...

Back when I had a Yak-52 I remember reading about one guy who made an oil tank out of 4Ē PVC pipe and used a DC aquarium aerator pump to feed a fitting on his exhaust collector ring to make a smoke...
Forum: RV-12/RV-12iS 12-24-2018, 08:00 PM
Replies: 4
Views: 965
Posted By RFSchaller
If your engine is anywhere near TBO you might...

If your engine is anywhere near TBO you might just go to overhaul. If there is considerable time left you might as well bite the bullet and replace the soft start.
Forum: RV-12/RV-12iS 12-24-2018, 07:56 PM
Replies: 53
Views: 10,121
Posted By RFSchaller
If at 5 years or 500 hours Iíd replace regardless...

If at 5 years or 500 hours Iíd replace regardless of indications since thatís the recommendation. The hi flow and low pressure sounds like vapor bubbles in your fuel line. How old was the fuel you...
Forum: RV-12/RV-12iS 12-24-2018, 07:51 PM
Replies: 8
Views: 868
Posted By RFSchaller
I finished tuning my AP today. I left he pitch...

I finished tuning my AP today. I left he pitch torque at 45% and roll at 30%. That minimized any slippage and hopefully will preserve my shear screws until I get around to replacing them.
Forum: RV-12/RV-12iS 12-23-2018, 07:55 PM
Replies: 8
Views: 868
Posted By RFSchaller
Bob, There was also a supplement Dynon put out...

Bob,

There was also a supplement Dynon put out on how to adjust the servo gain if the sensitivity canít get the desired effect. It was on a yellow sheet separate from the install manual. If you...
Forum: RV-12/RV-12iS 12-22-2018, 11:29 PM
Replies: 16
Views: 1,775
Posted By RFSchaller
Again ditto. I fit my canopy with the tail cone...

Again ditto. I fit my canopy with the tail cone off.
Forum: RV-12/RV-12iS 12-22-2018, 11:27 PM
Replies: 8
Views: 868
Posted By RFSchaller
Bob, I unexpectedly find myself in the same boat...

Bob,

I unexpectedly find myself in the same boat as you! My D180 was repaired by Dynon with the note that my settings were recovered ó- weíll sort of. Looks like I have to go through most of the...
Forum: RV-12/RV-12iS 12-21-2018, 11:37 PM
Replies: 8
Views: 868
Posted By RFSchaller
Search the threads. About 5 years ago somebody...

Search the threads. About 5 years ago somebody posted their settings, and I found them to be a great starting point.
Forum: RV-12/RV-12iS 12-21-2018, 11:35 PM
Replies: 16
Views: 1,775
Posted By RFSchaller
Ditto. I waited until the end to do the window.

Ditto. I waited until the end to do the window.
Forum: RV-12/RV-12iS 12-21-2018, 11:29 PM
Replies: 14
Views: 1,564
Posted By RFSchaller
Ben, Same thing I am thinking. My servos were...

Ben,

Same thing I am thinking. My servos were installed in 2012 and have 800 hours on them. Sounds like I should replace them at annual.

Rich
Forum: RV-12/RV-12iS 12-20-2018, 08:09 PM
Replies: 14
Views: 1,564
Posted By RFSchaller
Any idea of when Dynon went to the new more...

Any idea of when Dynon went to the new more robust design?
Forum: RV-12/RV-12iS 12-19-2018, 10:56 PM
Replies: 14
Views: 1,564
Posted By RFSchaller
Thanks. I wanted to be sure Iím not doing...

Thanks. I wanted to be sure Iím not doing something that might cause it to shear.
Forum: RV-12/RV-12iS 12-19-2018, 11:07 AM
Replies: 14
Views: 1,564
Posted By RFSchaller
For you guys who had broken shear screws can you...

For you guys who had broken shear screws can you attribute it to anything unusual or is the design just susceptible to the problem?
Forum: RV-12/RV-12iS 12-18-2018, 07:20 PM
Replies: 9
Views: 1,559
Posted By RFSchaller
I posted about spiking of my Oil, EGT and CHT...

I posted about spiking of my Oil, EGT and CHT indications about 5 weeks ago. Cleaning the connector contacts didnít solve the problem, so I sent my D180 back to Dynon for troubleshooting. They ended...
Forum: RV-12/RV-12iS 12-17-2018, 08:13 PM
Replies: 7
Views: 1,081
Posted By RFSchaller
Take a good look at the debris if there is any....

Take a good look at the debris if there is any. If itís tank sealer there may be more coming, and it would be wise inspect the tank interior and flush the fuel lines.

I helped a guy with a new SLSA...
Forum: RV-12/RV-12iS 12-17-2018, 08:03 PM
Replies: 9
Views: 2,000
Posted By RFSchaller
Wow! You guys are serious about cutting drag!😁

Wow! You guys are serious about cutting drag!😁
Forum: RV-12/RV-12iS 12-16-2018, 08:40 PM
Replies: 7
Views: 1,081
Posted By RFSchaller
Possibly a bit of debris in the cube making the...

Possibly a bit of debris in the cube making the turbine stick intermittently. Have tried removing it and flushing it?
Forum: RV-12/RV-12iS 12-14-2018, 09:44 PM
Replies: 11
Views: 1,646
Posted By RFSchaller
At the risk of drawing down the wrath of all the...

At the risk of drawing down the wrath of all the VAF members mayI suggest Bondo from the aviation department of Auto Zone.
Forum: RV-12/RV-12iS 12-14-2018, 09:40 PM
Replies: 9
Views: 2,000
Posted By RFSchaller
The guy who painted my 12 puta nice thick rough...

The guy who painted my 12 puta nice thick rough wing walk on mine. Almost 7 years on it and I am happy.
Forum: RV-12/RV-12iS 12-14-2018, 09:37 PM
Replies: 12
Views: 1,505
Posted By RFSchaller
There was no MEL in my operating limits.

There was no MEL in my operating limits.
Forum: RV-12/RV-12iS 12-14-2018, 09:36 PM
Replies: 4
Views: 948
Posted By RFSchaller
Donít feel Bad. On my first homebuilt I got a...

Donít feel Bad. On my first homebuilt I got a canopy crack propagating from an attachment screw hole. Fortunately it was in a spot where a 2Ē ventilator hole made sense! Of course I had to cut one on...
Forum: RV-12/RV-12iS 12-11-2018, 11:51 PM
Replies: 16
Views: 2,779
Posted By RFSchaller
Julian, If you guys get together at GEU you can...

Julian,

If you guys get together at GEU you can use any of my tools or testing stuff. Just give me a call.

Rich
Forum: RV-12/RV-12iS 12-03-2018, 09:13 PM
Replies: 78
Views: 11,732
Posted By RFSchaller
I like the thumbrule of adding half the wind and...

I like the thumbrule of adding half the wind and all the gust to approach speed. If you canít hold the centerline transitioning from crab to slip itís time to think about landing somewhere else.
Forum: RV-12/RV-12iS 12-03-2018, 09:05 PM
Replies: 16
Views: 2,779
Posted By RFSchaller
The only one I experienced hard starting (and I...

The only one I experienced hard starting (and I mean almost no starting) was when a west coast ROTAX shop swapped my choke units during carburetor overhaul. Since you didnít mention any recent...
Forum: RV-12/RV-12iS 11-30-2018, 08:45 PM
Replies: 9
Views: 1,559
Posted By RFSchaller
Mark, I hope it works for you. Dynon is checking...

Mark,

I hope it works for you. Dynon is checking my D180 now. Seems strange that my oil temp, EGT temps and CHT temps ALL went squirrelly at once, but not in synchronized swings. I hope they find...
Forum: RV-12/RV-12iS 11-29-2018, 09:08 PM
Replies: 78
Views: 11,732
Posted By RFSchaller
Actually itís sine. Sin(90 deg)=1. Man, Scott,...

Actually itís sine. Sin(90 deg)=1.

Man, Scott, they sure swept in and picked the flesh off your sun bleached bones on this one!😜
Forum: RV-12/RV-12iS 11-27-2018, 08:15 PM
Replies: 2
Views: 947
Posted By RFSchaller
I once landed (in a Piper Arrow) in a 50 Kt wind...

I once landed (in a Piper Arrow) in a 50 Kt wind right down the runway following the thumb rule of half the wind and all the gust added to approach speed. The RV is so light I would not press my luck...
Forum: RV-12/RV-12iS 11-27-2018, 08:06 PM
Replies: 15
Views: 1,434
Posted By RFSchaller
I like to think of the K-factor as pulses per...

I like to think of the K-factor as pulses per GPH. It helps my aging brain figure it out!😁
Forum: RV-12/RV-12iS 11-26-2018, 08:16 PM
Replies: 5
Views: 729
Posted By RFSchaller
Keith, Bummer! I misread your post as 5 years on...

Keith,

Bummer! I misread your post as 5 years on this pump.

I would be concerned about any oil coming out the drain port. Have you tried pulling the electric pump fuse and checking fuel...
Forum: RV-12/RV-12iS 11-26-2018, 11:18 AM
Replies: 5
Views: 729
Posted By RFSchaller
Itís my understanding that ROTAX has called for...

Itís my understanding that ROTAX has called for pump replacement every 5 years. Looks like you found the reason why.
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