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Search: Posts Made By: Piper J3
Forum: RV-12/RV-12iS Yesterday, 01:15 PM
Replies: 3
Views: 278
Posted By Piper J3
Looks like fire sleeve got a little toasty...

Looks like fire sleeve got a little toasty also...
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Forum: RV Ongoing Maintenance Issues 01-24-2021, 04:54 PM
Replies: 3
Views: 199
Posted By Piper J3
Just adding a data point here... back when I was...

Just adding a data point here... back when I was a pup and riding motorcycles there was a trick to fix squealing disc brakes. Drill three blind holes evenly spaced in the pad and then remove...
Forum: RV Photo/Video URLs 01-24-2021, 04:44 PM
Replies: 21
Views: 1,132
Posted By Piper J3
My ten-year-old granddaughter is special needs. ...

My ten-year-old granddaughter is special needs. Last summer she got the idea that she and I should fly in Papa’s airplane to Antarctica. We had several days of fun discussing what that might...
Forum: RV-12/RV-12iS 01-23-2021, 06:32 PM
Replies: 28
Views: 2,015
Posted By Piper J3
I still believe the rough running syndrome when...

I still believe the rough running syndrome when doing initial ignition check at 4000 RPM is carb related and not ignition. Capacitive Discharge Ignition (CDI) is a very hot spark and will operate...
Forum: RV General Discussion/News 01-21-2021, 09:32 PM
Replies: 14
Views: 931
Posted By Piper J3
You 3D printed the pineapple?

You 3D printed the pineapple?
Forum: RV-12/RV-12iS 01-21-2021, 12:58 PM
Replies: 25
Views: 2,200
Posted By Piper J3
Now there's a thought...

Now there's a thought...
Forum: RV-12/RV-12iS 01-20-2021, 04:51 PM
Replies: 17
Views: 872
Posted By Piper J3
Re-read post #2. Maybe El Niño affected the...

Re-read post #2. Maybe El Niño affected the Michelin rubber trees...
Forum: RV-12/RV-12iS 01-20-2021, 09:34 AM
Replies: 17
Views: 872
Posted By Piper J3
About ten years ago my wife and I were grocery...

About ten years ago my wife and I were grocery shopping and discovered that butter was exorbitantly priced. My wife asked the store manager why the recent price escalation? The answer they gave her...
Forum: RV-12/RV-12iS 01-19-2021, 08:09 AM
Replies: 25
Views: 2,200
Posted By Piper J3
Plenty of openings elsewhere. Airplanes are...

Plenty of openings elsewhere. Airplanes are parked for long periods of time. Suppose a nest gets build in the tail cone and then you close the canopy, yell "clear prop", and fire up the engine?
Forum: RV-12/RV-12iS 01-18-2021, 08:00 PM
Replies: 25
Views: 2,200
Posted By Piper J3
The 3 and 4 models have "tip over" canopy. I can...

The 3 and 4 models have "tip over" canopy. I can see slip stream tearing them off.

As reported above, "tip up" canopy is not much of a problem. I forgot to latch my canopy once. Don't panic,...
Forum: RV-12/RV-12iS 01-18-2021, 07:40 PM
Replies: 25
Views: 2,200
Posted By Piper J3
I got swarmed by yellow jackets (31 bites)...

I got swarmed by yellow jackets (31 bites) fifteen years ago and went into anaphylactic shock and almost checked-out. It was a little scary. I was prescribed an EpiPen (epinephrine injection) and...
Forum: COMM 01-16-2021, 06:16 PM
Replies: 7
Views: 596
Posted By Piper J3
I had a problem with my SL40 last spring at...

I had a problem with my SL40 last spring at 600TT. Turned out to be coax connector on back of tray was loose. Easy fix once problem was identified.

You might check VAF classifieds or eBay. Lots...
Forum: RV Building Tips/Techniques 01-16-2021, 12:27 PM
Replies: 9
Views: 1,321
Posted By Piper J3
Moist salt air near coastal areas is rough on...

Moist salt air near coastal areas is rough on aluminum. Your photo shows outside skin on stabilator. I wonder what inside of wing, stabs, and tail cone look like. Biggest problem is where skins...
Forum: RV-12/RV-12iS 01-15-2021, 03:01 PM
Replies: 28
Views: 2,015
Posted By Piper J3
You installed all new plugs? if so, you might...

You installed all new plugs? if so, you might consider replacing the spark plug caps. Just a feeling the 5 ohm resistor gets mutilated when pulling off the soft rubber caps - just a gut feeling. I...
Forum: RV-12/RV-12iS 01-15-2021, 01:22 PM
Replies: 28
Views: 2,015
Posted By Piper J3
You check ignitions in-flight and they are OK. ...

You check ignitions in-flight and they are OK. Excuse me for saying so, but still sounds like a carb problem...
Forum: RV-12/RV-12iS 01-14-2021, 08:36 AM
Replies: 18
Views: 1,389
Posted By Piper J3
You have a lot to learn... Rotax is very...

You have a lot to learn... Rotax is very different than 80 year old Lyc and Cont designs.
Forum: RV-12/RV-12iS 01-13-2021, 09:15 PM
Replies: 18
Views: 1,389
Posted By Piper J3
Cold oil doesn't scavenge well to the drain port...

Cold oil doesn't scavenge well to the drain port on the bottom of the crankcase because the pitch angle on the bottom of the case is very flat.
Forum: RV-12/RV-12iS 01-13-2021, 05:38 PM
Replies: 339
Views: 394,831
Posted By Piper J3
I installed a 1/4" Drive Type Grease Fitting on...

I installed a 1/4" Drive Type Grease Fitting on the nose fork pivot bushing. I used 1/16” thru drill and then ¼” drill x ¼” deep counterbore.
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Forum: RV-12/RV-12iS 01-13-2021, 08:34 AM
Replies: 6
Views: 544
Posted By Piper J3
Look here......

Look here... https://vansairforce.net/community/showthread.php?t=47846&highlight=spar+pins
Forum: RV-12/RV-12iS 01-09-2021, 07:11 AM
Replies: 5
Views: 716
Posted By Piper J3
Your fears are unfounded. I fly my RV-12 with...

Your fears are unfounded. I fly my RV-12 with Sensenich 2-bladed prop from grass private strip and prop remains in excellent shape.
Forum: RV-12/RV-12iS 01-08-2021, 07:51 PM
Replies: 2
Views: 740
Posted By Piper J3
Looks good COVID social separation observed...

Looks good COVID social separation observed...
Forum: RV-12/RV-12iS 01-08-2021, 03:29 PM
Replies: 14
Views: 2,147
Posted By Piper J3
Most likely a Back Tap Thread Repair Tool. Sort...

Most likely a Back Tap Thread Repair Tool. Sort of a threaded expanding collet that engages the threaded portion below the "screw-up". Fairly long tool not good for confined space.

Looks like...
Forum: RV-12/RV-12iS 01-08-2021, 12:57 PM
Replies: 10
Views: 1,116
Posted By Piper J3
Just use Solder-Wick to pull the solder away from...

Just use Solder-Wick to pull the solder away from the switch tabs and the circuit board foil. Once most of the solder is removed, a little heat at each tab and some wiggling will free the switch.
Forum: RV-12/RV-12iS 01-06-2021, 09:46 PM
Replies: 14
Views: 2,147
Posted By Piper J3
If you go the tap route - use a bottoming tap...

If you go the tap route - use a bottoming tap...
Forum: RV-12/RV-12iS 01-04-2021, 05:29 PM
Replies: 9
Views: 972
Posted By Piper J3
Two birds w/ one stone... Buy an Odyssey OBC-6A...

Two birds w/ one stone... Buy an Odyssey OBC-6A Portable Charger and make a pigtail connection at the battery with some Anderson Power Pole connectors. Use the battery charger when you want to sit...
Forum: RV-12/RV-12iS 01-04-2021, 01:06 PM
Replies: 12
Views: 971
Posted By Piper J3
Not so sure ethanol is the correct explanation...

Not so sure ethanol is the correct explanation for winter/summer fuels. What is really changed is the fuel vapor pressure rating and I suspect the amount, or absence, of alcohol, may not play much...
Forum: RV-12/RV-12iS 01-04-2021, 12:59 PM
Replies: 8
Views: 962
Posted By Piper J3
Perhaps the screws had thread-locker applied in...

Perhaps the screws had thread-locker applied in which case heat will soften it. A hot soldering iron will transfer heat to the screw head and threads.

As far as botched screwdriver slot -...
Forum: RV-12/RV-12iS 01-03-2021, 01:50 PM
Replies: 12
Views: 971
Posted By Piper J3
The post above is correct. Because you are...

The post above is correct.

Because you are relatively new here, I would suggest replacing floats with the new design Marvel-Schebler epoxy floats. Search thread titled "New member of the 'Sinker...
Forum: RV-12/RV-12iS 01-02-2021, 08:54 AM
Replies: 12
Views: 1,239
Posted By Piper J3
You can go here... ...

You can go here... https://www.rotax-owner.com/en/general-tech-discussion/4580-rotax-engine-manufacture-date?start=140#p27724 and provide your engine SN. These good folks will tell you exactly how...
Forum: RV-12/RV-12iS 01-02-2021, 08:24 AM
Replies: 12
Views: 1,239
Posted By Piper J3
Really? Have you tried locking the crankshaft...

Really? Have you tried locking the crankshaft with special 8mm bolt and then turn the prop shaft?

Hard to believe Van's would eliminate the slipper clutch...
Forum: RV-12/RV-12iS 12-30-2020, 11:54 AM
Replies: 7
Views: 1,476
Posted By Piper J3
You will want to replace with conductive Teflon...

You will want to replace with conductive Teflon fuel and oil hoses. These hoses have no defined replacement interval.
Forum: RV-12/RV-12iS 12-27-2020, 06:06 PM
Replies: 32
Views: 3,229
Posted By Piper J3
I like the left-hand thread idea. Maybe some...

I like the left-hand thread idea. Maybe some Loctite Threadlocker or Super Glue to fasten the screw thread. Just spitballing...
Forum: RV-12/RV-12iS 12-27-2020, 12:27 PM
Replies: 32
Views: 3,229
Posted By Piper J3
Straight is the correct choice. Slightly...

Straight is the correct choice. Slightly oversize and tap into the broken receiver for maximum engagement.

Actually, the best tool is Straight Fluted Extractor with a Turn Nut.
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Forum: RV-12/RV-12iS 12-27-2020, 10:38 AM
Replies: 32
Views: 3,229
Posted By Piper J3
Are you using a straight flute of spiral flute...

Are you using a straight flute of spiral flute extractor tool?
Forum: RV-12/RV-12iS 12-26-2020, 10:15 AM
Replies: 9
Views: 3,211
Posted By Piper J3
It might be tough to get the PID tuning right for...

It might be tough to get the PID tuning right for the yaw axis. In turbulence, the RV-12 is least stable in yaw. Nose swing L-R +/- 10 degrees is very noticeable in rough air. Holding rudder...
Forum: RV General Discussion/News 12-24-2020, 12:45 PM
Replies: 35
Views: 2,332
Posted By Piper J3
I fly my RV-12 at lower end of yellow arc most of...

I fly my RV-12 at lower end of yellow arc most of the time. I have Dynon set in MPH so numbers are bigger… :D
.
Forum: RV-12/RV-12iS 12-23-2020, 07:07 PM
Replies: 7
Views: 872
Posted By Piper J3
Engine Cowling Piano Hinges...

The lower right hinge pin on the lower engine cowling keeps creeping up out of the piano hinge on a friend’s RV-12. We have tried putting a bend and a series of waves in the wire and still creeps up...
Forum: RV-12/RV-12iS 12-23-2020, 06:49 AM
Replies: 249
Views: 54,086
Posted By Piper J3
No, they're ripping us off. $10 processing fee? ...

No, they're ripping us off. $10 processing fee? $30 for shipping?

When is America going to wise up?
Forum: RV-12/RV-12iS 12-21-2020, 08:37 AM
Replies: 6
Views: 963
Posted By Piper J3
I'm curious about this. Crankcase is sealed to...

I'm curious about this. Crankcase is sealed to atmosphere so I don't see how you can vent it with a dehydrator.. No vent fittings for connection.
Forum: RV-12/RV-12iS 12-21-2020, 07:50 AM
Replies: 6
Views: 963
Posted By Piper J3
Actually, the crankcase on the 9-series engine is...

Actually, the crankcase on the 9-series engine is sealed from the atmosphere by the oil tank. Standing oil in return and supply lines block air flow to the crankcase. The oil tank has a vent to...
Forum: RV General Discussion/News 12-20-2020, 11:13 AM
Replies: 6
Views: 965
Posted By Piper J3
Slight thread drift. This works fantastic for...

Slight thread drift. This works fantastic for me... https://vansairforce.net/community/showpost.php?p=1412943&postcount=41
Forum: RV-12/RV-12iS 12-19-2020, 07:24 AM
Replies: 6
Views: 963
Posted By Piper J3
I leave throttled at full idle shutoff. Best to...

I leave throttled at full idle shutoff. Best to leave throttle plate in closed position to limit free flow of air (read moisture) into any open cylinders.
Forum: RV General Discussion/News 12-18-2020, 03:29 PM
Replies: 56
Views: 13,272
Posted By Piper J3
Yes, you need to go to Costco and have the...

Yes, you need to go to Costco and have the technician permanently turn "on" the telecoil, permanently "mute" the microphone, and (I think) turn down the volume so ignition noise is not heard. I had...
Forum: RV-12/RV-12iS 12-18-2020, 10:56 AM
Replies: 28
Views: 2,015
Posted By Piper J3
The in-flight check should show a little drop. ...

The in-flight check should show a little drop. Sounds like carb problem...
Forum: RV General Discussion/News 12-18-2020, 07:48 AM
Replies: 32
Views: 3,430
Posted By Piper J3
I learned to fly in 1970. I rebuilt an Aeronca...

I learned to fly in 1970. I rebuilt an Aeronca 11AC with my father and he taught me to fly. On April 4, 2021 I will fly to celebrate 50 years since my first solo.

My father and I owned a J-3 Cub...
Forum: RV-12/RV-12iS 12-17-2020, 12:20 PM
Replies: 28
Views: 2,015
Posted By Piper J3
I would not discount carbs. Your problem does...

I would not discount carbs. Your problem does not sound like ignition or plugs.

Next time you fly - do an in-flight ignition check by cycling each ignition at cruise RPM.

Another thought... if you...
Forum: RV-12/RV-12iS 12-17-2020, 09:14 AM
Replies: 28
Views: 2,015
Posted By Piper J3
Sparkplugs are cheap - replace all @ $3.50 ea. ...

Sparkplugs are cheap - replace all @ $3.50 ea. Use high temp thermal paste on sparkplug threads per Rotax manual for correct heat transfer.

Could still be carb problem. Did you weigh floats?
Forum: RV-12/RV-12iS 12-16-2020, 11:17 AM
Replies: 10
Views: 1,554
Posted By Piper J3
Another thought…. Carbs on Rotax 4-cylinder...

Another thought…. Carbs on Rotax 4-cylinder engine jump around a lot at idle causing float level to be all over the map. This is aggravated because carbs are located at cylinder heads instead of...
Forum: RV-12/RV-12iS 12-16-2020, 07:14 AM
Replies: 10
Views: 1,554
Posted By Piper J3
Common for carbureted four-cylinder Rotax. You...

Common for carbureted four-cylinder Rotax. You are looking at remnants of idling. Intake manifold runner lengths and sharp radius bends make uneven fuel/air distribution at idle. Mid-range and...
Forum: RV-12/RV-12iS 12-14-2020, 03:50 PM
Replies: 18
Views: 2,929
Posted By Piper J3
The 912 is not a large-bore engine and it is...

The 912 is not a large-bore engine and it is oversquare at 3.3” bore x 2.4” stroke. Compared to Continental 0200, at similar horsepower, with 4.0” bore x 4.4 stroke. Larger (heavier) pistons with...
Forum: RV-12/RV-12iS 12-12-2020, 01:17 PM
Replies: 5
Views: 729
Posted By Piper J3
Posts = 1... and this is your first question?

Posts = 1... and this is your first question?
Forum: RV-12/RV-12iS 12-12-2020, 04:05 AM
Replies: 7
Views: 1,099
Posted By Piper J3
Looks OK. initial wear-in from the gear hobbing...

Looks OK. initial wear-in from the gear hobbing process will cause metal fines. Subsequent oil changes should show less ferrous metal. Good-to-go...
Forum: RV-12/RV-12iS 12-11-2020, 03:50 PM
Replies: 18
Views: 2,929
Posted By Piper J3
The 9-series Rotax uses heavy cast cylinders and...

The 9-series Rotax uses heavy cast cylinders and heavy (thick) cooling fins as opposed to Lyc or Cont. Piston diameter is small compared to conventional aircraft engines. As a consequence, the...
Forum: RV-12/RV-12iS 12-11-2020, 10:16 AM
Replies: 18
Views: 2,929
Posted By Piper J3
The Predator Drone used a Rotax 914 in pusher...

The Predator Drone used a Rotax 914 in pusher configuration. 914 is a glorified 912 with turbocharger to allow operation at altitude. My guess is the military put 1000’s of hours on those engines...
Forum: RV-12/RV-12iS 12-10-2020, 01:08 PM
Replies: 18
Views: 2,929
Posted By Piper J3
Differential compression leak-down check? Any...

Differential compression leak-down check? Any idea on oil usage? What do plugs look like?
Forum: RV-12/RV-12iS 12-09-2020, 11:18 AM
Replies: 13
Views: 980
Posted By Piper J3
Basically, what Scott says, however, burping the...

Basically, what Scott says, however, burping the engine only purges the crankcase. In order to assure the entire system is full, the oil pump would need to be spun-up and generate pressure.
Forum: RV-12/RV-12iS 12-09-2020, 08:16 AM
Replies: 13
Views: 980
Posted By Piper J3
The oil tank can be removed easily. I would burb...

The oil tank can be removed easily. I would burb the engine when hot and then drain the tank. Hot oil drains faster and more completely. This is no different than the procedure for a standard oil...
Forum: RV-12/RV-12iS 12-08-2020, 10:11 AM
Replies: 11
Views: 1,538
Posted By Piper J3
I consider my RV-12 to be in good rigging. I...

I consider my RV-12 to be in good rigging. I have adjusted the flaperons for hands-off level flight in cruise with pilot and full fuel. Ball is centered with factory rudder trim tab. Approx 2 lbs....
Forum: RV-12/RV-12iS 12-07-2020, 11:25 AM
Replies: 249
Views: 54,086
Posted By Piper J3
Would you trust either Rotax or Bing after all...

Would you trust either Rotax or Bing after all these years of selling us floats and giving us lousy product? Even the motorcycle guys are fed up. Now “alcohol-resistant” floats with a big RED...
Forum: RV-12/RV-12iS 12-06-2020, 07:11 PM
Replies: 11
Views: 5,045
Posted By Piper J3
It's nice to go fast and have lots of vertical...

It's nice to go fast and have lots of vertical climb but it's also very important to remember Vne is measured in true airspeed - not indicated airspeed. Stock RV-12 can come pretty close to Vne if...
Forum: RV-12/RV-12iS 12-05-2020, 01:08 PM
Replies: 249
Views: 54,086
Posted By Piper J3
My guess is the juncture where the body of the...

My guess is the juncture where the body of the float is molded around the brass slider tube is where the fuel begins to penetrate the underlying foam.
Forum: RV-12/RV-12iS 12-05-2020, 07:54 AM
Replies: 249
Views: 54,086
Posted By Piper J3
I just had a thought…. maybe if the Marvel...

I just had a thought…. maybe if the Marvel Schebler epoxy floats actually “float”, and permanently solve this problem, then there could potentially be several thousand Rotax/Bing floats that could be...
Forum: RV-12/RV-12iS 12-04-2020, 02:42 PM
Replies: 249
Views: 54,086
Posted By Piper J3
The new (newest) Marvel Schebler epoxy floats,...

The new (newest) Marvel Schebler epoxy floats, reported to weigh 2.9 grams, might be the way to go...
Forum: RV-12/RV-12iS 12-03-2020, 12:39 AM
Replies: 36
Views: 6,768
Posted By Piper J3
Exactly. The wheel is mounted on the end of a...

Exactly. The wheel is mounted on the end of a long cantilever "stick". Nose gear is not stiff enough to dampen out oscillation from imbalanced wheel rotation.
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