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Search: Posts Made By: Piper J3
Forum: RV-12/RV-12iS Yesterday, 05:26 AM
Replies: 14
Views: 1,129
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: 3,575
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: 3,575
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: 3,575
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: 600
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: 1,638
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: 11
Views: 1,074
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: 1,227
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: 1,252
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: 37
Views: 3,939
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: 37
Views: 3,939
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: 4,924
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: 37
Views: 3,939
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: 37
Views: 3,939
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: 37
Views: 3,939
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: 451
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: 2,647
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: 2,647
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: 1,816
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: 4,703
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: 4,703
Posted By Piper J3
$1800.00 :eek:

$1800.00 :eek:
Forum: RV-12/RV-12iS 06-11-2022, 07:10 AM
Replies: 8
Views: 1,056
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: 1,231
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: 427
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: 427
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: 4,703
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: 4,703
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: 4,703
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: 4,703
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: 4,703
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: 4,703
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: 4,703
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: 4,703
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: 2,526
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: 782
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: 782
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: 4,703
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: 5,989
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: 1,062
Posted By Piper J3
Are you serious????

Are you serious????
Forum: RV-12/RV-12iS 05-23-2022, 07:39 AM
Replies: 18
Views: 2,526
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: 2,840
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: 4,703
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: 37
Views: 3,939
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: 37
Views: 3,939
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: 37
Views: 3,939
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: 37
Views: 3,939
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: 37
Views: 3,939
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...
Forum: RV-12/RV-12iS 05-15-2022, 03:11 PM
Replies: 37
Views: 3,939
Posted By Piper J3
High Oil Temp...

Let’s talk Oil Temperature in RV-12 with 912ULS….

I recently discovered a crack in the muffler and was able to find an exact replacement exhaust system with only 70TT. Exhaust system is identical...
Forum: RV-12/RV-12iS 05-14-2022, 02:45 AM
Replies: 5
Views: 824
Posted By Piper J3
I checked and I'm running 5.5.0. I also looked...

I checked and I'm running 5.5.0. I also looked at 12-D180-PRE-SETS.pdf and it clearly shows Oil Temp Sensor "USING CUSTOM ENGINE DISPLAY SETTINGS". It appears that all the other pre-sets are user...
Forum: RV-12/RV-12iS 05-12-2022, 07:50 PM
Replies: 5
Views: 824
Posted By Piper J3
D-180 Oil Temp Sensor – Can’t Change Temp Limits

I have legacy RV-12 with Dynon D-180 EFIS. I want to modify some of the Oil Temp Sensor settings for green, yellow, and red bands. I get message “Using Custom Engine Display Settings” for the Oil...
Forum: RV-12/RV-12iS 05-10-2022, 04:24 PM
Replies: 16
Views: 2,535
Posted By Piper J3
Can someone show photo, or better yet, KIA...

Can someone show photo, or better yet, KIA drawings for rudder stub spar? I'm having a hard time visualizing this...
Forum: RV-12/RV-12iS 05-08-2022, 03:32 PM
Replies: 10
Views: 928
Posted By Piper J3
Cars used to have a “Road Tube” which vented the...

Cars used to have a “Road Tube” which vented the crankcase. If memory serves… it was ~3/4” diameter, angled downward, with a 45 degree chamfered discharge end. Nasty…. Then in the mid 60’s the PCV...
Forum: RV-12/RV-12iS 05-08-2022, 09:06 AM
Replies: 10
Views: 928
Posted By Piper J3
Correct... I would not restrict the air flow...

Correct... I would not restrict the air flow from the oil tank vent in any way. I strongly suspect that Rotax wants the end of the tube in the negative pressure slipstream to keep the oil tank at a...
Forum: ADS-B 05-08-2022, 03:55 AM
Replies: 14
Views: 2,017
Posted By Piper J3
Baro Alt - PAPR % Failure

I have echoUAT + SkyFYX-EXT that is hard wired with MUX cable to Garmin 327 transponder. When I run PAPR it always shows some % failure in Baro Alt - usually less than 2% failure and report is...
Forum: RV-12/RV-12iS 05-08-2022, 03:15 AM
Replies: 9
Views: 1,050
Posted By Piper J3
Correct again. My Bing floats (3rd set) where...

Correct again. My Bing floats (3rd set) where operating fine and within weight spec when I changed over to Marvel-Schebler epoxy floats.

I had enough fun with sinking floats and fuel overflowing...
Forum: RV-12/RV-12iS 05-08-2022, 03:07 AM
Replies: 10
Views: 928
Posted By Piper J3
I would re-think putting oil tank vent tubing...

I would re-think putting oil tank vent tubing into an overflow bottle. The Rotax 9-series engines are dry-sump and only use light pressure in the crankcase to scavenge oil back to the holding tank. ...
Forum: RV-12/RV-12iS 05-07-2022, 06:33 AM
Replies: 9
Views: 1,050
Posted By Piper J3
Right…. The guys with BMW motorcycles equipped...

Right…. The guys with BMW motorcycles equipped with BING carbs need to remember to shut off fuel tank valve at the end of a day’s ride. More than one has been surprised the next day to find...
Forum: RV-12/RV-12iS 05-06-2022, 01:31 AM
Replies: 9
Views: 1,050
Posted By Piper J3
Marvel-Schebler offered their original epoxy...

Marvel-Schebler offered their original epoxy floats for Rotax a few years ago where they copied Bing float geometry. This resulted in a float that was too heavy with incorrect buoyancy. The...
Forum: RV-12/RV-12iS 05-06-2022, 01:14 AM
Replies: 11
Views: 1,451
Posted By Piper J3
No, the connector block does not work with the...

No, the connector block does not work with the John Deere VR. See photo below for individual push-on connectors. I mounted my JD VR on a thick aluminum sub-plate for better heat dissipation. Use...
Forum: RV-12/RV-12iS 05-05-2022, 07:52 PM
Replies: 11
Views: 1,451
Posted By Piper J3
If you have original Ducati VR then, all of the...

If you have original Ducati VR then, all of the above. There are several VAF threads dedicated to replacement VR's...
Forum: RV-12/RV-12iS 05-05-2022, 09:47 AM
Replies: 16
Views: 2,535
Posted By Piper J3
I wouldn't be so quick to discount aerodynamic...

I wouldn't be so quick to discount aerodynamic forces. A full slip, perhaps with burbled air flow from flap extension, and P-Factor slip stream, could be pretty turbulent at the widest part of the...
Forum: RV-12/RV-12iS 05-04-2022, 11:36 AM
Replies: 7
Views: 843
Posted By Piper J3
[QUOTE=Jcurry;1606218]Hi Jim, Just wondering...

[QUOTE=Jcurry;1606218]Hi Jim,
Just wondering what's wrong with your master cylinder? Leaking or weak? My pilot side LH master
cylinder recently became weak./QUOTE]

In my case the pilot's left brake...
Forum: RV-12/RV-12iS 05-02-2022, 07:33 AM
Replies: 36
Views: 7,259
Posted By Piper J3
Tire Sealant....

I recently converted a ten-year old Trek bicycle to e-Bike. The tires and tubes needed replacement for fear of getting a flat tire on the road. I did some searching and discovered that a lot of...
Forum: RV-12/RV-12iS 04-30-2022, 06:56 PM
Replies: 7
Views: 843
Posted By Piper J3
Excellent. Thanks.....

Excellent. Thanks.....
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