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Search: Posts Made By: Piper J3
Forum: RV-12/RV-12iS Yesterday, 08:38 AM
Replies: 4
Views: 438
Posted By Piper J3
Here’s my take at 800TTAF and some 2000 hours...

Here’s my take at 800TTAF and some 2000 hours PIC…. The RV-12 is a very light SLA which allows a good useful load. The 12 is an absolute delight to fly with beautiful control harmony and excellent...
Forum: RV-12/RV-12iS 09-22-2022, 07:03 AM
Replies: 10
Views: 593
Posted By Piper J3
I would caution on smaller size. Air filter...

I would caution on smaller size. Air filter needs to free-flow air per engine displacement and operating RPM...
Forum: RV-12/RV-12iS 09-21-2022, 06:52 PM
Replies: 10
Views: 593
Posted By Piper J3
K&N air filters can be cleaned and re-oiled. ...

K&N air filters can be cleaned and re-oiled. They sell a kit for this....
Forum: RV-12/RV-12iS 09-19-2022, 05:39 PM
Replies: 5
Views: 556
Posted By Piper J3
I'm guessing he'll fit. Need to remove the wedge...

I'm guessing he'll fit. Need to remove the wedge from underneath the bottom seat cushion to allow more headroom...
Forum: RV-12/RV-12iS 09-19-2022, 05:36 PM
Replies: 5
Views: 332
Posted By Piper J3
Actually, fuel pressure on high end of spec is...

Actually, fuel pressure on high end of spec is better for vapor lock. I installed the new higher pressure electric fuel pump after I experienced vapor lock on takeoff and almost had a really bad...
Forum: RV-12/RV-12iS 09-15-2022, 10:44 AM
Replies: 15
Views: 2,054
Posted By Piper J3
The imbalance of the front wheel can shake front...

The imbalance of the front wheel can shake front of engine / spinner ~ 3/8". It's very noticeable...
Forum: RV-12/RV-12iS 09-14-2022, 12:41 PM
Replies: 15
Views: 2,054
Posted By Piper J3
This sounds like nose wheel coasting down. ...

This sounds like nose wheel coasting down. Imbalance of wheel at certain speeds will cause entire engine to jump around on rubber mounts...
Forum: RV-12/RV-12iS 09-12-2022, 06:55 PM
Replies: 20
Views: 2,240
Posted By Piper J3
Hard to believe anything gets through gascolator...

Hard to believe anything gets through gascolator screen. I run 93E10 Mogas and pour directly into tank with no filtering. I find a few particles once in a while when sumping gascolator, but have...
Forum: RV-12/RV-12iS 09-12-2022, 06:43 PM
Replies: 9
Views: 1,031
Posted By Piper J3
What happens if a bug impales itself at the tip...

What happens if a bug impales itself at the tip of one blade? Say 1 gram at 30" moment arm?
Forum: RV-12/RV-12iS 09-10-2022, 08:48 AM
Replies: 0
Views: 299
Posted By Piper J3
Master Relay - Cole Hersee 24115-BK

I did a short flight to a remote airport the other day and shut off engine, got out walked around, and when I went to leave, the engine wouldn’t crank. Battery voltage showed a fluctuating 9V and...
Forum: RV-12/RV-12iS 08-28-2022, 01:00 PM
Replies: 8
Views: 853
Posted By Piper J3
I asked that same question when I saw all the...

I asked that same question when I saw all the worm hose clamps used on the 12iS fuel pump filter rack. Someone from Vans said not to worry, worm clamps don’t back off on the own. I would safety...
Forum: RV-12/RV-12iS 08-28-2022, 12:05 AM
Replies: 2
Views: 473
Posted By Piper J3
Try to figure out fuel remaining with analog...

Try to figure out fuel remaining with analog gages in Piper or Cessna... :eek:
Forum: RV-12/RV-12iS 08-26-2022, 07:07 PM
Replies: 10
Views: 2,629
Posted By Piper J3
That's a pretty wild story. Let us know how it...

That's a pretty wild story. Let us know how it pans out over time...
Forum: RV-12/RV-12iS 08-25-2022, 04:40 PM
Replies: 18
Views: 4,733
Posted By Piper J3
A friend's RV-12 built by Synergy had Dynon GPS...

A friend's RV-12 built by Synergy had Dynon GPS antenna wire cut through. Hole in mounting plate did not align with wires exiting bottom of amplified antenna...
Forum: RV-12/RV-12iS 08-18-2022, 12:08 PM
Replies: 32
Views: 3,035
Posted By Piper J3
A couple of tough Threads in the forum today.......

A couple of tough Threads in the forum today.... This One and the Oil Tank Vent guy....
Forum: RV-12/RV-12iS 08-18-2022, 10:36 AM
Replies: 26
Views: 1,203
Posted By Piper J3
I get that you are obsessed with moisture in the...

I get that you are obsessed with moisture in the engine... You will have a bigger problem with long inop periods if you use MOGAS w/ alcohol. Several threads on the subject in this forum. MOGAS...
Forum: RV-12/RV-12iS 08-17-2022, 09:16 AM
Replies: 26
Views: 1,203
Posted By Piper J3
Correct.... I had A65-8 in my Cub, and oil cap...

Correct.... I had A65-8 in my Cub, and oil cap and dipstick had droplets of water more often than not. You will not see this phenomenon with Rotax 9-series engines...
Forum: RV-12/RV-12iS 08-17-2022, 09:11 AM
Replies: 7
Views: 1,474
Posted By Piper J3
My aluminum carry-thru gear channel developed...

My aluminum carry-thru gear channel developed cracks at the rear “mouseholes” at ~500TT. I had previously installed SB 12-11-09 per Van’s recommendation. This Service Bulletin added support plates...
Forum: RV-12/RV-12iS 08-17-2022, 09:02 AM
Replies: 26
Views: 1,203
Posted By Piper J3
I think what is trying to be said is... Rotax...

I think what is trying to be said is... Rotax 9-series engines have what is essentially a sealed crankcase. Oil in the reservoir tank hose prevents air ingress into the crankcase. As such, no...
Forum: RV-12/RV-12iS 08-14-2022, 01:09 PM
Replies: 32
Views: 3,035
Posted By Piper J3
I suspect same reasoning for liquid-cooling...

I suspect same reasoning for liquid-cooling system not have thermostat as a flow restricting device, and perhaps, point of failure...
Forum: RV-12/RV-12iS 08-14-2022, 10:52 AM
Replies: 32
Views: 3,035
Posted By Piper J3
It's counter intuitive…. At altitude, air is...

It's counter intuitive…. At altitude, air is colder by air is less dense (molecules further apart). High power air-cooled piston engines can easily overheat at altitude...
Forum: RV-12/RV-12iS 08-14-2022, 10:23 AM
Replies: 32
Views: 3,035
Posted By Piper J3
I recently modified the lower cowling fiberglass...

I recently modified the lower cowling fiberglass and moved my oil cooler 1” forward. Prior to that, I tried to improve air flow (extraction) from the lower cowl by adding a temporary “Cowl Flap”...
Forum: RV General Discussion/News 08-14-2022, 08:40 AM
Replies: 21
Views: 3,808
Posted By Piper J3
BBQ at the Pool - Hinde Airport (88D)

Fly the RV-12 to Hinde Airport (88D) Huron, OH for "BBQ at the Pool". Weather was perfect and had a great time....

Photos here.......
Forum: RV-12/RV-12iS 08-09-2022, 11:08 AM
Replies: 15
Views: 2,634
Posted By Piper J3
^^^^^ Perhaps a re-read of the OP... The guy's...

^^^^^ Perhaps a re-read of the OP... The guy's problem is intermittent oil pressure reading on the EMS. I doubt carb balance of exhaust springs would be my first place to look...
Forum: The RV Grin 08-08-2022, 06:48 PM
Replies: 5
Views: 643
Posted By Piper J3
I used to travel to Banbury on business. ...

I used to travel to Banbury on business. Easington House & Banbury Cakes. Oh.... and the Pubs :D
Forum: RV-12/RV-12iS 08-07-2022, 09:11 AM
Replies: 24
Views: 3,297
Posted By Piper J3
If I were building now, I would wrap entire...

If I were building now, I would wrap entire airplane in 3M vinyl. I used 1080 silver to cover polished aluminum on turtle deck and vert stab. Easy to do with excellent result.

Has same...
Forum: RV-12/RV-12iS 08-06-2022, 02:14 PM
Replies: 7
Views: 1,436
Posted By Piper J3
This should shed some light.... -

This should shed some light....
-
Forum: RV-12/RV-12iS 08-06-2022, 12:14 PM
Replies: 7
Views: 1,436
Posted By Piper J3
The Bing 64 carb has a diaphragm that controls...

The Bing 64 carb has a diaphragm that controls Venturi slide and tapered main jet needle. The diaphragm raises and lowers the slide based on altitude and that is why there is no mixture control. ...
Forum: RV-12/RV-12iS 07-29-2022, 07:15 PM
Replies: 23
Views: 1,957
Posted By Piper J3
Check coax connection o back of mounting tray. ...

Check coax connection o back of mounting tray. Screws come loose...
Forum: RV-12/RV-12iS 07-20-2022, 08:37 AM
Replies: 2
Views: 579
Posted By Piper J3
Dynon HDX Auto-Trim Question...

A friend has RV-12 with dual Dynon HDX and separate autopilot control panel. We are trying to determine if the auto-trim feature is enabled and to confirm if the AP is wired to control the trim. ...
Forum: RV-12/RV-12iS 07-19-2022, 02:16 PM
Replies: 11
Views: 1,328
Posted By Piper J3
My technique for getting out of the RV-12 doesn’t...

My technique for getting out of the RV-12 doesn’t involve much knee strength. There’s no direct standing up… Basically, push down with hands to lift your butt up, sit yourself on side longeron,...
Forum: RV-12/RV-12iS 07-18-2022, 05:48 AM
Replies: 25
Views: 3,123
Posted By Piper J3
Courtesy is good... I wouldn't take passenger...

Courtesy is good... I wouldn't take passenger with you if you shut off electric fuel pump defying Van's Aircraft directive.

OK to risk one's own life, but not that of passenger who unknowingly is...
Forum: RV-12/RV-12iS 07-16-2022, 03:09 PM
Replies: 25
Views: 3,123
Posted By Piper J3
Excuse me for saying... but this is stupid, or...

Excuse me for saying... but this is stupid, or ill-informed, question. Van's Aircraft said that the electric fuel pump is to run continuously as-designed. It is not a boast pump. Van’s Aircraft...
Forum: RV-12/RV-12iS 07-16-2022, 12:25 PM
Replies: 25
Views: 3,123
Posted By Piper J3
Yes, I did that also... until I experienced Vapor...

Yes, I did that also... until I experienced Vapor Lock on take-off and almost didn't return to airport runway. Vapor Lock is very serious and life-threatening...

See my post above for what I...
Forum: RV-12/RV-12iS 07-15-2022, 11:59 AM
Replies: 12
Views: 1,437
Posted By Piper J3
I believe the OP has Electronic Fuel Injection,...

I believe the OP has Electronic Fuel Injection, so no balancing of carbs...
Forum: RV-12/RV-12iS 07-14-2022, 07:09 PM
Replies: 371
Views: 503,754
Posted By Piper J3
For what it's worth.... if you leave a switch in...

For what it's worth.... if you leave a switch in place and it is inoperable... you should mark it as such... "INOP"
Forum: RV-12/RV-12iS 07-14-2022, 03:51 PM
Replies: 25
Views: 3,123
Posted By Piper J3
I would say more than "possible" vapor lock... I...

I would say more than "possible" vapor lock... I would say "probable" vapor lock. RV-12 is a very tightly-cowled engine installation. Rotax 912ULS has fuel lines routed on top side of engine, and...
Forum: RV-12/RV-12iS 07-08-2022, 04:42 PM
Replies: 10
Views: 1,366
Posted By Piper J3
The OP posts an interesting question.... I wonder...

The OP posts an interesting question.... I wonder how "balanced" the prop is in actual flight with aircraft suspended in air and smooth airflow over cowling? I would imagine aircraft sitting on huge...
Forum: RV-12/RV-12iS 07-08-2022, 09:45 AM
Replies: 7
Views: 1,429
Posted By Piper J3
For it to break in an annular ring like that, I...

For it to break in an annular ring like that, I can only imagine there was a scratched line on the circumference that acted as a stress riser.

When making metal aircraft parts, it’s important to...
Forum: RV-12/RV-12iS 07-05-2022, 05:26 AM
Replies: 18
Views: 2,447
Posted By Piper J3
I doubt you can restart Rotax 912 by...

I doubt you can restart Rotax 912 by reverse-driving the prop in a dive. Engine has 2.41 gear reduction and high-compression. I wouldn't attempt it....
Forum: RV-12/RV-12iS 07-04-2022, 05:29 AM
Replies: 21
Views: 4,748
Posted By Piper J3
Yes, the RV-12 is a pleasure to fly in the...

Yes, the RV-12 is a pleasure to fly in the landing pattern. Once slowed on downwind leg, I drop both notches of flap in one smooth motion and trim for 55 KIAS with power at idle. Airplane is fully...
Forum: RV-12/RV-12iS 07-02-2022, 02:23 PM
Replies: 21
Views: 4,748
Posted By Piper J3
Correct… you can cross full controls, even with...

Correct… you can cross full controls, even with full flap extension, and when released, it straightens itself back out nice as can be. What it doesn’t do very well is scrub off speed when in a...
Forum: RV-12/RV-12iS 07-01-2022, 09:34 PM
Replies: 21
Views: 4,748
Posted By Piper J3
See......

See... https://vansairforce.net/community/showpost.php?p=1482078&postcount=3
Forum: RV-12/RV-12iS 07-01-2022, 08:04 AM
Replies: 9
Views: 952
Posted By Piper J3
Actually the control stick is not in the way. ...

Actually the control stick is not in the way. Simple method to get in/out of RV-12 without standing up or standing on the seats...

Ingress…. https://youtu.be/vFcl_h1mfT0

Egress.......
Forum: RV-12/RV-12iS 06-27-2022, 07:54 PM
Replies: 10
Views: 2,149
Posted By Piper J3
Maybe.... Synergy Air - Newnan, GA

Maybe.... Synergy Air - Newnan, GA
Forum: RV-12/RV-12iS 06-27-2022, 07:23 PM
Replies: 19
Views: 2,064
Posted By Piper J3
Look here.......

Look here.... https://vansairforce.net/community/showthread.php?t=184104
Forum: RV-12/RV-12iS 06-24-2022, 04:04 PM
Replies: 19
Views: 1,722
Posted By Piper J3
The Navy had a learning curve leading up to...

The Navy had a learning curve leading up to modern-day carrier flight...
Forum: RV-12/RV-12iS 06-22-2022, 10:19 PM
Replies: 16
Views: 1,739
Posted By Piper J3
Early-on, I did a takeoff with canopy unlatched...

Early-on, I did a takeoff with canopy unlatched in the heat of summer. Just like Joe says in above post, it is a non-event. Loud noise, and startling for sure, but aerodynamics not changed very...
Forum: RV-12/RV-12iS 06-22-2022, 03:23 PM
Replies: 40
Views: 5,903
Posted By Piper J3
115 KIAS 5500 RPM 45 Minutes Cruise @ 2500 MSL

115 KIAS
5500 RPM
45 Minutes Cruise @ 2500 MSL
Forum: RV-12/RV-12iS 06-22-2022, 10:52 AM
Replies: 40
Views: 5,903
Posted By Piper J3
As promised... I flew today to test oil temp...

As promised... I flew today to test oil temp with ground temp at 90F. Per post #24 I modified lower cowling to move oil cooler 1" forward of the muffler.

Today's Flight: 80 F OAT, 222 F Oil...
Forum: RV-12/RV-12iS 06-19-2022, 11:08 AM
Replies: 21
Views: 5,442
Posted By Piper J3
A follow-up to post #1…. Hinge was replaced and...

A follow-up to post #1…. Hinge was replaced and “smoke” pattern from loose hinge loops was noticed on right side of lower cowling. My friend cleaned both halves of the piano hinge with brake...
Forum: RV-12/RV-12iS 06-19-2022, 11:01 AM
Replies: 40
Views: 5,903
Posted By Piper J3
No, hoses have enough slack to accommodate...

No, hoses have enough slack to accommodate without stretching....
Forum: RV-12/RV-12iS 06-18-2022, 04:28 PM
Replies: 40
Views: 5,903
Posted By Piper J3
There is a “Heat Dome” forecast for Tues/Weds...

There is a “Heat Dome” forecast for Tues/Weds with temps in the mid-90’s. I’ll fly then and report-out with data….
Forum: RV-12/RV-12iS 06-18-2022, 08:06 AM
Replies: 40
Views: 5,903
Posted By Piper J3
As a follow-up to my original post #1… I...

As a follow-up to my original post #1… I modified the lower cowling to move the oil cooler 1” forward. Worked a charm… Now in cruise flight, at 75 OAT, I see 207F oil temp. I should have no...
Forum: RV-12/RV-12iS 06-17-2022, 08:53 AM
Replies: 7
Views: 787
Posted By Piper J3
The legacy RV-12 has a tightly cowled engine. ...

The legacy RV-12 has a tightly cowled engine. Ground ops should be minimized, especially to prevent vapor lock (ask me how I know). My guess is the engine is running hot on the ground (Cocoa, FL). ...
Forum: RV-12/RV-12iS 06-15-2022, 12:03 PM
Replies: 23
Views: 3,785
Posted By Piper J3
I'd be reluctant to add a trim tab. A fixed tab...

I'd be reluctant to add a trim tab. A fixed tab only works correctly at one speed... usually bent correctly for cruise. Rudder tab is that way... works well in cruise, but need to hold right rudder...
Forum: RV-12/RV-12iS 06-15-2022, 09:01 AM
Replies: 23
Views: 3,785
Posted By Piper J3
Yes, I would fix heavy wing first. Then I would...

Yes, I would fix heavy wing first. Then I would check for heavy wing with one notch of flap, and then again with full-flap. In each case, I would trim hands-off for 55 KIAS. My 12 flies level in...
Forum: RV-12/RV-12iS 06-14-2022, 12:57 PM
Replies: 7
Views: 2,131
Posted By Piper J3
With Mogas over $5/gal, buy John Deere 12V...

With Mogas over $5/gal, buy John Deere 12V Voltage Regulator AM101406 for $21.99 and fly rest of summer for free...
Forum: RV-12/RV-12iS 06-12-2022, 12:56 PM
Replies: 43
Views: 5,391
Posted By Piper J3
Welding is an acceptable repair if done...

Welding is an acceptable repair if done correctly. I think what causes the crack is the long cantilevered exhaust stack vibrates and stresses the end bell of the muffler. I have been told that...
Forum: RV-12/RV-12iS 06-11-2022, 03:27 PM
Replies: 43
Views: 5,391
Posted By Piper J3
$1800.00 :eek:

$1800.00 :eek:
Forum: RV-12/RV-12iS 06-11-2022, 07:10 AM
Replies: 8
Views: 1,234
Posted By Piper J3
Carbon Monoxide Detector…

I found significant cracks in my muffler during Annual Condition Inspection. I have replaced entire exhaust system with a unit that has 70TT and all is good...

I have been following discussions...
Forum: RV-12/RV-12iS 06-10-2022, 04:28 PM
Replies: 9
Views: 1,485
Posted By Piper J3
I use a full-fwd slip when landing at my home...

I use a full-fwd slip when landing at my home field - 2100' long. A kind neighbor planted spruce trees at the end of the runway and now they have grown nearly 30' tall. I'm about 55 KIAS over top...
Forum: RV-12/RV-12iS 06-09-2022, 04:59 PM
Replies: 4
Views: 531
Posted By Piper J3
Thank you for steering us in right direction.......

Thank you for steering us in right direction.... literally....
Forum: RV-12/RV-12iS 06-09-2022, 12:49 PM
Replies: 4
Views: 531
Posted By Piper J3
How to Re-calibrate Autopilot Servo with Dynon HDX?

I’m helping a RV-12 friend that has dual Dynon HDX with Autopilot. He replaced the sheer screw in the roll servo and now needs to re-calibrate the servo. We can’t find exact instructions for doing...
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