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Search: Posts Made By: Piper J3
Forum: RV-12/RV-12iS 05-23-2022, 07:39 AM
Replies: 15
Views: 1,078
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: 2,492
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: 13
Views: 1,621
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: 20
Views: 1,590
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: 20
Views: 1,590
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: 20
Views: 1,590
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: 20
Views: 1,590
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: 20
Views: 1,590
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: 20
Views: 1,590
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: 527
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: 527
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: 17
Views: 2,230
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: 729
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: 729
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: 1,694
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: 851
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: 729
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: 851
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: 851
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: 9
Views: 549
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: 9
Views: 549
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: 17
Views: 2,230
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: 8
Views: 725
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: 6,896
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: 8
Views: 725
Posted By Piper J3
Excellent. Thanks.....

Excellent. Thanks.....
Forum: RV-12/RV-12iS 04-30-2022, 03:24 PM
Replies: 8
Views: 725
Posted By Piper J3
Pilot Side - Left Master Brake Cylinder...

I've been searching this forum and can't find Manufacturer (Matco?) and PN for Pilot Side - Left Master Brake Cylinder. Also, does anyone know if this is rebuildable? Thanks in advance....
Forum: RV-12/RV-12iS 04-30-2022, 07:10 AM
Replies: 2
Views: 418
Posted By Piper J3
No. Following the KIA exactly and take your...

No. Following the KIA exactly and take your time. Van's stamped metal gage works very well and allows both blades to be set within 0.1 degree of each other. If your happy, with current...
Forum: RV-12/RV-12iS 04-28-2022, 01:27 PM
Replies: 8
Views: 1,022
Posted By Piper J3
I forgot to mention in my post #1 above.... On...

I forgot to mention in my post #1 above.... On this new installation, I bent the hooks on all the exhaust stacks and the muffler so the springs would have more stretch. The thinking is with more...
Forum: RV-12/RV-12iS 04-28-2022, 12:40 PM
Replies: 8
Views: 1,022
Posted By Piper J3
Exhaust Spring Cut-Thru…

While doing Annual Condition Inspection I found a crack in the exhaust exit end of the muffler. I advertised on VAF classified thread for a used muffler and got several responses. I ended up buying...
Forum: RV-12/RV-12iS 04-25-2022, 12:58 PM
Replies: 3
Views: 399
Posted By Piper J3
Check Coax connector in back of SL40 tray. ...

Check Coax connector in back of SL40 tray. Connector is held to tray with two screws that vibrate loose allowing Coax to become intermittent and noisy...
Forum: RV-12/RV-12iS 04-23-2022, 10:24 AM
Replies: 11
Views: 1,682
Posted By Piper J3
I might want to do this... Can you post a...

I might want to do this... Can you post a picture so I get idea how much and where you removed material?
Forum: RV-12/RV-12iS 04-22-2022, 06:49 AM
Replies: 11
Views: 1,682
Posted By Piper J3
Perhaps you could show us a photo....

Perhaps you could show us a photo....
Forum: RV-12/RV-12iS 04-21-2022, 02:18 PM
Replies: 7
Views: 2,138
Posted By Piper J3
The pinch radius on the trailing edge has direct...

The pinch radius on the trailing edge has direct correlation to wing heaviness...
Forum: RV-12/RV-12iS 04-21-2022, 06:34 AM
Replies: 7
Views: 2,138
Posted By Piper J3
Look here at Post #5........

Look here at Post #5..... https://vansairforce.net/community/showthread.php?t=204789&highlight=heavy+wing
Forum: RV-12/RV-12iS 04-21-2022, 01:34 AM
Replies: 20
Views: 4,149
Posted By Piper J3
I wonder why co-pilot side? P-factor from prop? ...

I wonder why co-pilot side? P-factor from prop? Turbulence from protruding round exhaust stack? Air turbulence around/thru cowl opening for exhaust stack?
Forum: RV-12/RV-12iS 04-18-2022, 11:53 AM
Replies: 360
Views: 482,523
Posted By Piper J3
S-LSA or E-LSA?

S-LSA or E-LSA?
Forum: RV-12/RV-12iS 04-18-2022, 08:56 AM
Replies: 6
Views: 847
Posted By Piper J3
You might try an exhaust pipe internal expanding...

You might try an exhaust pipe internal expanding tool to "pull" bushings into alignment rather than beat on the spar pins until they're fully engaged. Just say'n....
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Forum: RV-12/RV-12iS 04-14-2022, 12:49 PM
Replies: 13
Views: 1,621
Posted By Piper J3
Muffler Crack...

I'm doing Annual Condition Inspection now and found a crack in the muffler where the exit exhaust tube is welded on. Looks like vibration induced metal fatigue from long cantilever exhaust tube....
Forum: RV-12/RV-12iS 04-13-2022, 05:58 PM
Replies: 11
Views: 1,932
Posted By Piper J3
I sent a request for information to BRP-Rotax...

I sent a request for information to BRP-Rotax asking if 15% ethanol MOGAS can be used to operate 912ULS. I’ll report back here when I get a reply…
Forum: RV-12/RV-12iS 04-13-2022, 02:32 PM
Replies: 11
Views: 1,932
Posted By Piper J3
New Fed Gov Regulation to Allow E15 Auto Fuel...

I started a new topic in the Rotax Owners Forum 912/914 Technical Questions regarding use of E15 auto fuel now that the Federal Government has boosted ethanol % in an attempt to reduce auto fuel...
Forum: RV-12/RV-12iS 04-12-2022, 05:23 PM
Replies: 35
Views: 3,841
Posted By Piper J3
Yeah, it does. Suppose on next flight one of the...

Yeah, it does. Suppose on next flight one of the exhaust springs lets loose and muffler shifts position and then begins to rub on elbow. Perhaps even wears a hole in the elbow and a fire starts. ...
Forum: RV-12/RV-12iS 04-10-2022, 07:03 AM
Replies: 35
Views: 3,841
Posted By Piper J3
Per my photos in post #22 above: Stock elbow...

Per my photos in post #22 above: Stock elbow fitting is almost touching muffler. Banjo fitting has almost 1/2" clearance to the muffler. Now that is significant in anyone's book. Don't need to be...
Forum: RV-12/RV-12iS 04-08-2022, 11:53 PM
Replies: 35
Views: 3,841
Posted By Piper J3
I disagree with this assessment... I changed...

I disagree with this assessment...

I changed oil return line 4 years ago on my early SN 120058 and used banjo fitting to gain much needed clearance to the muffler. Hose routing was not a...
Forum: RV-12/RV-12iS 04-05-2022, 04:40 PM
Replies: 247
Views: 37,450
Posted By Piper J3
This is interesting… As mentioned in Post #212...

This is interesting…

As mentioned in Post #212 above, a group of us are working to implement this SB on three different RV-12’s. Last Sunday we did the first one that is Synergy-built five years...
Forum: RV-12/RV-12iS 04-03-2022, 05:14 PM
Replies: 247
Views: 37,450
Posted By Piper J3
BRAVO UNIFORM TANGO TANGO

Title of this post says it all...
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Forum: RV-12/RV-12iS 03-31-2022, 07:29 PM
Replies: 35
Views: 3,841
Posted By Piper J3
The bolts won't get damaged if you use high...

The bolts won't get damaged if you use high quality wrench. You should replace O-ring seals each time manifold is removed...
Forum: RV-12/RV-12iS 03-31-2022, 07:27 PM
Replies: 17
Views: 2,315
Posted By Piper J3
Your understanding is correct...

Your understanding is correct...
Forum: RV-12/RV-12iS 03-31-2022, 12:35 PM
Replies: 247
Views: 37,450
Posted By Piper J3
Light airplanes have been built with aluminum...

Light airplanes have been built with aluminum monocoque tail cones since the 40’s. Aircraft structural engineers understand the stresses and dynamic forces involved.

No need to re-invent...
Forum: RV-12/RV-12iS 03-30-2022, 07:14 AM
Replies: 247
Views: 37,450
Posted By Piper J3
I think this assessment is exactly correct. The...

I think this assessment is exactly correct. The benefit is that the fleet is large and all planes are built to spec (with some altered post AWC). Not very often do you find a manufacturer following...
Forum: RV-12/RV-12iS 03-29-2022, 07:50 PM
Replies: 247
Views: 37,450
Posted By Piper J3
We are starting to get serious about SB00053. ...

We are starting to get serious about SB00053. Tonight, we took photos of the bulkheads using a cellphone taped to a long extension pole. Worked great. Cellphone was set to record video with the...
Forum: RV-12/RV-12iS 03-27-2022, 08:44 AM
Replies: 8
Views: 906
Posted By Piper J3
Odyssey told you correctly... Odyssey Absorbent...

Odyssey told you correctly... Odyssey Absorbent Glass Mat Battery and Odyssey Charger connected 24/7 is good. I leave my RV-12 on charge all the time in hanger. The Odyssey chargers have several...
Forum: RV-12/RV-12iS 03-26-2022, 11:21 AM
Replies: 17
Views: 2,315
Posted By Piper J3
No, each Capacitive Discharge Ignition module...

No, each Capacitive Discharge Ignition module fires two sets of coils – one coil for (2) left plugs and one coil for (2) right plugs. Wiring is done in this manner so that if a CDI quits all four...
Forum: RV-12/RV-12iS 03-24-2022, 10:05 AM
Replies: 7
Views: 1,261
Posted By Piper J3
Why not just tape over the hole and see what it...

Why not just tape over the hole and see what it does? My guess is no change at all. Airplane is slow speed and aerodynamic mods won't do much...
Forum: RV-12/RV-12iS 03-24-2022, 05:48 AM
Replies: 17
Views: 2,315
Posted By Piper J3
It depends on what you call “running on one...

It depends on what you call “running on one carb”. I suspect if you are flying at cruise altitude and somehow one carb acts-up and decides not to flow fuel/air mixture, you could power-back and land...
Forum: RV-12/RV-12iS 03-22-2022, 05:36 PM
Replies: 247
Views: 37,450
Posted By Piper J3
Does anyone have dimensions for doubler plate if...

Does anyone have dimensions for doubler plate if cracks are found? I'd like to pre-make some plates. Need thickness as well. Thanks in advance...
Forum: RV-12/RV-12iS 03-21-2022, 05:27 PM
Replies: 6
Views: 1,065
Posted By Piper J3
Question About Pitot / Static Testing for Transponder Certification

I'm helping a friend with his RV-12 Annual Condition Inspection. The Transponder will need re-certification when we are finished. The plane has dual Dynon HDX and Angle of Attack. Pitot, Static and...
Forum: RV-12/RV-12iS 03-20-2022, 05:55 PM
Replies: 23
Views: 2,746
Posted By Piper J3
Just curious... Was airplane previously stationed...

Just curious... Was airplane previously stationed near costal area with salt air?
Forum: RV-12/RV-12iS 03-19-2022, 04:16 PM
Replies: 12
Views: 1,945
Posted By Piper J3
I bought my 12 from original builder and it had a...

I bought my 12 from original builder and it had a small trim tab attached to bottom left flaperon with double sided tape. Did the job – plane flew hands off in cruise and straight with flaperons...
Forum: RV-12/RV-12iS 03-16-2022, 06:51 PM
Replies: 35
Views: 3,841
Posted By Piper J3
I reused original clamps with new silicone hoses....

I reused original clamps with new silicone hoses. No problems....
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Forum: RV-12/RV-12iS 03-14-2022, 06:00 PM
Replies: 247
Views: 37,450
Posted By Piper J3
I love it....

I love it....
Forum: RV-12/RV-12iS 03-14-2022, 04:22 PM
Replies: 18
Views: 1,628
Posted By Piper J3
He lives in Israel...

He lives in Israel...
Forum: RV-12/RV-12iS 03-07-2022, 05:24 PM
Replies: 247
Views: 37,450
Posted By Piper J3
To airplane or self...?

To airplane or self...?
Forum: RV-12/RV-12iS 03-06-2022, 05:52 AM
Replies: 23
Views: 2,746
Posted By Piper J3
I mounted my John Deere VR with heat conductive...

I mounted my John Deere VR with heat conductive paste to a subplate on stand-offs that has air circulating beneath. Still located on firewall shelf in original location with no added cooling air. ...
Forum: RV-12/RV-12iS 03-06-2022, 05:46 AM
Replies: 428
Views: 390,748
Posted By Piper J3
Congratulations on first flight. Now you get to...

Congratulations on first flight. Now you get to climb into tail cone and do SB00053... :D
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