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Search: Posts Made By: Piper J3
Forum: RV-12/RV-12iS Today, 01:32 AM
Replies: 3
Views: 154
Posted By Piper J3
I hear what you are saying… but the Rotax...

I hear what you are saying… but the Rotax 9-series engines will not produce spark when turning propellor slowly by hand even with ignition switches in the “on” position. Rotax uses Capacitive...
Forum: RV-12/RV-12iS Yesterday, 02:16 AM
Replies: 10
Views: 670
Posted By Piper J3
For data point… my RV-12 flies wings level and...

For data point… my RV-12 flies wings level and ball-centered in cruise flight. Half and full flaps produce no adverse roll. Trimmed for 55 KIAS power-off glide is hands-off wings level.
Forum: RV-12/RV-12iS 02-28-2021, 09:48 AM
Replies: 42
Views: 3,542
Posted By Piper J3
It's been more than two months since OP started...

It's been more than two months since OP started this thread. I believe he was going to try replace ignition parts. Did trecool44 resolve his problem?
Forum: RV-12/RV-12iS 02-26-2021, 02:43 PM
Replies: 10
Views: 1,470
Posted By Piper J3
Greg - With new tube-bending equipment...

Greg -

With new tube-bending equipment in-house.... can Van's manufacture the original exhaust tubes for early 912ULS?
Forum: RV-12/RV-12iS 02-23-2021, 02:56 PM
Replies: 11
Views: 835
Posted By Piper J3
Stansuski - I sent you a PM...

Stansuski - I sent you a PM...
Forum: RV-12/RV-12iS 02-22-2021, 11:11 PM
Replies: 10
Views: 670
Posted By Piper J3
Hands-off in cruise... Is ball centered?

Hands-off in cruise... Is ball centered?
Forum: RV-12/RV-12iS 02-20-2021, 01:40 PM
Replies: 7
Views: 542
Posted By Piper J3
I fly off of a grass field and always use one...

I fly off of a grass field and always use one notch of flap for takeoff. At least once a year I forget to raise flap and settle into cruise at slower speed with attitude indicator not showing level...
Forum: RV-12/RV-12iS 02-20-2021, 11:41 AM
Replies: 20
Views: 1,839
Posted By Piper J3
Randy (ninerbikes) makes a good point on main...

Randy (ninerbikes) makes a good point on main landing gear. I have posted about the main gear to this forum on a several occasions, but perhaps enlightenment is again needed for those new to the...
Forum: RV-12/RV-12iS 02-18-2021, 08:30 AM
Replies: 23
Views: 1,936
Posted By Piper J3
Question - now that you changed lengths of...

Question - now that you changed lengths of control rods, will there be a noticeable roll induced when you lower the flaps?
Forum: RV-12/RV-12iS 02-12-2021, 07:34 AM
Replies: 10
Views: 1,493
Posted By Piper J3
That’s really weird. You would think the voltage...

That’s really weird. You would think the voltage regulator circuit would modulate the field windings to match output with load.

What if you had to drive your car around all the time with...
Forum: RV-12/RV-12iS 02-11-2021, 04:30 PM
Replies: 17
Views: 1,977
Posted By Piper J3
Joe - I rec'd a PM today asking for help with...

Joe -

I rec'd a PM today asking for help with wiring diagram for the JD VR. I did a VAF RV-12 search for old thread and came up empty. Also having trouble locating my notes and photos from when I...
Forum: RV-12/RV-12iS 02-08-2021, 06:21 AM
Replies: 13
Views: 1,174
Posted By Piper J3
This was proposed early-on and VAF decided to...

This was proposed early-on and VAF decided to keep all things 12 in one forum. More in common than dissimilar…
Forum: RV-12/RV-12iS 02-06-2021, 12:35 PM
Replies: 13
Views: 1,013
Posted By Piper J3
I don't know where Riverview is located. Perhaps...

I don't know where Riverview is located. Perhaps a better geographical reference would point you to nearest EAA chapter and/or local builder who might be willing to share tools.
Forum: RV-12/RV-12iS 02-05-2021, 01:42 PM
Replies: 29
Views: 7,147
Posted By Piper J3
Everyone’s situation is different... I owned a...

Everyone’s situation is different... I owned a J3-Cub for 23 years and traded it for a flying RV-12. I wanted to build but family matters precluded. My search criteria were two-fold: I wanted to...
Forum: RV-12/RV-12iS 02-04-2021, 08:59 AM
Replies: 11
Views: 1,608
Posted By Piper J3
I often wondered why the SL40 installed in the...

I often wondered why the SL40 installed in the early RV-12 didn’t make use of the internal intercom feature. Seems like it would have been easier wiring without the added 403 Flightcom...
Forum: RV-12/RV-12iS 02-02-2021, 04:25 PM
Replies: 12
Views: 934
Posted By Piper J3
I wouldn't drain float bowls unless fuel was...

I wouldn't drain float bowls unless fuel was really old. When engine starts the fuel in the bowls will get consumed quickly at low engine power. Even if octane is way low it won't hurt anything for...
Forum: RV-12/RV-12iS 02-02-2021, 03:35 PM
Replies: 12
Views: 934
Posted By Piper J3
Yes, I have done this many times. Shut off...

Yes, I have done this many times.


Shut off manual fuel valve
Replace drain valve in bottom of gascolator with long pipe nipple
Open manual fuel valve
Run electric pump

Tank will empty...
Forum: RV-12/RV-12iS 02-01-2021, 02:14 PM
Replies: 19
Views: 1,572
Posted By Piper J3
This is typical. EGT's closely matched near...

This is typical. EGT's closely matched near 1300F while making published cruise speed at just under 5500 RPM.

"How sweet it is" - Jackie Gleason
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Forum: RV-12/RV-12iS 01-31-2021, 05:07 PM
Replies: 19
Views: 1,572
Posted By Piper J3
5150 RPM puts you right on the money...

5150 RPM puts you right on the money...
Forum: RV-12/RV-12iS 01-29-2021, 07:17 AM
Replies: 9
Views: 943
Posted By Piper J3
I bought new bronze bushings and knurled them in...

I bought new bronze bushings and knurled them in a lathe to increase OD. Then I cut the OD for tighter slip fit into the stick. Also fit the length of the bushings and added thin washers on each...
Forum: RV-12/RV-12iS 01-27-2021, 02:01 PM
Replies: 10
Views: 1,470
Posted By Piper J3
1/8" is not very much clearance - that would make...

1/8" is not very much clearance - that would make me nervous. I don't think anything on my 912ULS is that close to causing interference and rubbing.
Forum: RV-12/RV-12iS 01-27-2021, 12:59 PM
Replies: 42
Views: 3,542
Posted By Piper J3
Yes, try fresh Mogas. Search online for Top Tier...

Yes, try fresh Mogas. Search online for Top Tier suppliers. 93E10 is a common high-octane fuel recommended for Rotax 912. Ethanol is fine, no need for ethanol-free.

Years ago I had a conversation...
Forum: RV-12/RV-12iS 01-27-2021, 11:31 AM
Replies: 42
Views: 3,542
Posted By Piper J3
If you’re inclined and follow post #30 above,...

If you’re inclined and follow post #30 above, also record L and R EGT’s. Do this during initial warmup at 2800 RPM, again after you taxi to runup pad, and also in cruise flight.

Something like...
Forum: RV-12/RV-12iS 01-27-2021, 11:17 AM
Replies: 8
Views: 1,630
Posted By Piper J3
I did same as Joe - John Deere AM101406 from eBay...

I did same as Joe - John Deere AM101406 from eBay and mounted to a 3/16” aluminum sub-plate with thermal paste. Mounted on firewall shelf in original location with no add’l cooling air. Runs warm...
Forum: RV-12/RV-12iS 01-26-2021, 05:33 PM
Replies: 42
Views: 3,542
Posted By Piper J3
You very likely have carb and not ignition...

You very likely have carb and not ignition problem.

Follow post #30 and report back...
Forum: RV-12/RV-12iS 01-26-2021, 12:28 PM
Replies: 42
Views: 3,542
Posted By Piper J3
Correct. Idle warm-up at higher speed is...

Correct. Idle warm-up at higher speed is beneficial. I bring idle speed to ~ 2800 RPM as soon as engine starts.

• Cold engine runs smoother when speed is increased.
• Better for gearbox when...
Forum: RV-12/RV-12iS 01-25-2021, 01:15 PM
Replies: 10
Views: 1,470
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: 388
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: 23
Views: 1,879
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: 42
Views: 3,542
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: 18
Views: 1,904
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: 2,942
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: 1,265
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: 1,265
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: 2,942
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: 2,942
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: 2,942
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: 974
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: 1,555
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: 42
Views: 3,542
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: 42
Views: 3,542
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: 1,958
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: 1,958
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: 400,549
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: 821
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: 985
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: 989
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: 2,660
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: 1,437
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: 2,660
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: 1,340
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: 1,454
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: 1,172
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: 1,454
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: 1,709
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: 1,709
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: 1,669
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: 3,884
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: 3,884
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: 3,884
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: 3,412
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: 2,667
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: 1,058
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: 56,631
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?
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