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Search: Posts Made By: Piper J3
Forum: RV-12/RV-12iS 08-09-2022, 11:08 AM
Replies: 14
Views: 1,678
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: 404
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: 2,623
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: 602
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: 602
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: 9
Views: 536
Posted By Piper J3
Check coax connection o back of mounting tray. ...

Check coax connection o back of mounting tray. Screws come loose...
Forum: VAF Classifieds (posts in here deleted after 30 days) 07-21-2022, 02:49 PM
Replies: 7
Views: 405
Posted By Piper J3
Level 2 BUDS Adapter.... Is that like the rubber...

Level 2 BUDS Adapter.... Is that like the rubber socket that my Bing carbs plug into on the 912ULS?
Forum: RV-12/RV-12iS 07-20-2022, 08:37 AM
Replies: 2
Views: 426
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: 1,101
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: 2,549
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: 2,549
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: 2,549
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: 1,222
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: 496,067
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: 2,549
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: 1,183
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: 1,232
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: 2,273
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: 4,544
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: 4,544
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: 4,544
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: 879
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: 2,019
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: 1,889
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: 1,589
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: 1,555
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: 5,279
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: 5,279
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: 5,228
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: 5,279
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: 5,279
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: 5,279
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: 633
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: 3,367
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: 3,367
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: 2,000
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: 5,090
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: 5,090
Posted By Piper J3
$1800.00 :eek:

$1800.00 :eek:
Forum: RV-12/RV-12iS 06-11-2022, 07:10 AM
Replies: 8
Views: 1,158
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: 1,378
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: 494
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: 494
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...
Forum: RV-12/RV-12iS 06-09-2022, 12:45 PM
Replies: 43
Views: 5,090
Posted By Piper J3
I had the crack in my muffler welded by a...

I had the crack in my muffler welded by a certified welder. I think it looks good. The muffler will be kept as a spare. I was able to purchase early SN exhaust systems with only 70TT, but that is...
Forum: RV-12/RV-12iS 06-04-2022, 08:24 PM
Replies: 43
Views: 5,090
Posted By Piper J3
Yes, pressure relief valve is spring with ball,...

Yes, pressure relief valve is spring with ball, or more recently spring with piston.
Forum: RV-12/RV-12iS 06-04-2022, 01:46 PM
Replies: 43
Views: 5,090
Posted By Piper J3
Oil is 10W40 multigrade.... It is 10 weight when...

Oil is 10W40 multigrade.... It is 10 weight when cold and 40 weight when hot. Best explanation I can give....
Forum: RV-12/RV-12iS 06-04-2022, 12:14 PM
Replies: 43
Views: 5,090
Posted By Piper J3
Also, in thread for "High Oil Temp", MMiller...

Also, in thread for "High Oil Temp", MMiller mentions ground path problem with D180 that causes indicated oil temp to be higher than actual. I verified this using his suggested test method, and I...
Forum: RV-12/RV-12iS 06-04-2022, 11:29 AM
Replies: 43
Views: 5,090
Posted By Piper J3
I cruise right at redline - 5500 RPM and 115...

I cruise right at redline - 5500 RPM and 115 KTAS...
Forum: RV-12/RV-12iS 06-04-2022, 02:04 AM
Replies: 43
Views: 5,090
Posted By Piper J3
I have documented OAT, Oil Temp, and Oil Press in...

I have documented OAT, Oil Temp, and Oil Press in stabilized cruise flight at near gross weight and 3000’ MSL. Rotax states 260F Max Allowed Oil Temp with 190-230F Normal Range. I have been using...
Forum: RV-12/RV-12iS 06-03-2022, 02:10 PM
Replies: 43
Views: 5,090
Posted By Piper J3
Seagull - What Oil Temperatures are you seeing...

Seagull -

What Oil Temperatures are you seeing with 3/4" spacing?
Forum: RV-12/RV-12iS 05-31-2022, 04:34 PM
Replies: 43
Views: 5,090
Posted By Piper J3
printer - I sent you PM....

printer - I sent you PM....
Forum: RV-12/RV-12iS 05-30-2022, 03:46 PM
Replies: 18
Views: 2,802
Posted By Piper J3
^^^^^^ I had to look at your VAF Profile. It...

^^^^^^ I had to look at your VAF Profile. It was bugging me and I needed to see your background. Move along... nothing to see here....
Forum: RV-12/RV-12iS 05-30-2022, 01:49 AM
Replies: 7
Views: 855
Posted By Piper J3
Perhaps a word of caution... The Desser retread...

Perhaps a word of caution... The Desser retread Elite Premium 2-grove tires are heavy. It is my opinion that the increased weight causes additional stress on the aluminum carry-thru gear channel. ...
Forum: RV-12/RV-12iS 05-29-2022, 05:04 PM
Replies: 7
Views: 855
Posted By Piper J3
I have Desser retread Elite Premium 2 grove and...

I have Desser retread Elite Premium 2 grove and Michelin Airstop Tubes. I love them.... At 480 hours, have you flipped the tires on the on the wheels to spread wear across entire face of tread? ...
Forum: RV-12/RV-12iS 05-27-2022, 01:28 PM
Replies: 43
Views: 5,090
Posted By Piper J3
Tony - Weld is not the prettiest I've ever seen,...

Tony -

Weld is not the prettiest I've ever seen, but if welder things he had good penetration, I'd say give it try. Might be stronger than when new. I'd inspect fairly often until you have good...
Forum: RV-12/RV-12iS 05-25-2022, 03:48 PM
Replies: 53
Views: 6,345
Posted By Piper J3
Just watched your videos... My 912ULS Bing 64...

Just watched your videos... My 912ULS Bing 64 carbs with Marvel-Schebler epoxy floats are looking pretty good right about now. :D
Forum: RV-12/RV-12iS 05-25-2022, 03:36 PM
Replies: 12
Views: 1,129
Posted By Piper J3
Are you serious????

Are you serious????
Forum: RV-12/RV-12iS 05-23-2022, 07:39 AM
Replies: 18
Views: 2,802
Posted By Piper J3
Correct, but OP has fuel-injected 912 which runs...

Correct, but OP has fuel-injected 912 which runs higher fuel pressure. Should be OK with winter blend fuel. The real concern is the carbureted 912 which is low fuel pressure delivery. In-line...
Forum: RV-12/RV-12iS 05-22-2022, 03:42 PM
Replies: 14
Views: 3,014
Posted By Piper J3
And your hands are still clean.... :eek:

And your hands are still clean.... :eek:
Forum: RV-12/RV-12iS 05-22-2022, 10:41 AM
Replies: 43
Views: 5,090
Posted By Piper J3
Tony - When welding a repair on muffler, the...

Tony - When welding a repair on muffler, the inside has to be purged with Argon gas. All muffler openings need to be capped off to contain the Argon. Also, very difficult to clean crack with carbon...
Forum: RV-12/RV-12iS 05-20-2022, 06:10 PM
Replies: 40
Views: 5,279
Posted By Piper J3
This is Very Interesting….

azonslow pointed me to Rotax Service Instruction Titled: Selection of Suitable Operating Fluids for ROTAX® Engine Type 916 i (Series), 915 i (Series), 912 i (Series), 912 and 914 (Series). The...
Forum: RV-12/RV-12iS 05-20-2022, 09:03 AM
Replies: 40
Views: 5,279
Posted By Piper J3
I have add’l data that suggests I will have high...

I have add’l data that suggests I will have high oil temps in the heat of summer. I may be restricted to flying early morning or evenings to mitigate problem to get me through flying season and then...
Forum: RV-12/RV-12iS 05-18-2022, 02:55 PM
Replies: 40
Views: 5,279
Posted By Piper J3
Mike - Thanks for explanation. I will perform...

Mike -

Thanks for explanation. I will perform this test soonest... I assume I can shut off Master Switch in the air? Just thought I'd ask before doing something risky....
Forum: RV-12/RV-12iS 05-17-2022, 12:23 PM
Replies: 40
Views: 5,279
Posted By Piper J3
First I've ever heard of this... Can you...

First I've ever heard of this... Can you elaborate on why this happens and amount of possible error at high end of scale? Inquisitive minds want to know....
Forum: RV-12/RV-12iS 05-17-2022, 10:21 AM
Replies: 40
Views: 5,279
Posted By Piper J3
I added a "Cowl Flap" sort of like a Cessna 180. ...

I added a "Cowl Flap" sort of like a Cessna 180. This is just an experiment to see if it reduces oil temp. Sheet aluminum is held in place with 3M Body Side Molding Tape for testing...

Data point...
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