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Search: Posts Made By: Piper J3
Forum: RV-12/RV-12iS Yesterday, 06:53 PM
Replies: 4
Views: 198
Posted By Piper J3
I doubt if its plated. Most likely a zinc...

I doubt if its plated. Most likely a zinc die-casting. Maybe anodized. Almost looks like spalling of some sort. Manufacturing defect?
Forum: RV-12/RV-12iS 08-06-2020, 04:35 PM
Replies: 19
Views: 1,764
Posted By Piper J3
Correct... Octane does not make power. 100LL may...

Correct... Octane does not make power. 100LL may even have slower flame propagation. As long as engine does not exhibit detonation (knock) everything is Jake. You absolutely do not want detonation...
Forum: RV-12/RV-12iS 08-06-2020, 04:27 PM
Replies: 2
Views: 350
Posted By Piper J3
Did you lower airplane back on to the ground? ...

Did you lower airplane back on to the ground? This will position upper flange firmly against firewall.
Forum: RV-12/RV-12iS 08-05-2020, 12:08 PM
Replies: 32
Views: 2,730
Posted By Piper J3
I'm going to suggest only one more thought... did...

I'm going to suggest only one more thought... did you ever have a stuck exhaust valve? Engine ran fine on previous flight. During preflight - zero compression on one cylinder. Huge leak heard...
Forum: RV-12/RV-12iS 08-05-2020, 01:32 AM
Replies: 32
Views: 2,730
Posted By Piper J3
Impossible to notice weak compression on one...

Impossible to notice weak compression on one cylinder of a running engine regardless of speed. Likewise gear backlash is very subtle especially with a hunting (uneven) gear ratio. My contention is...
Forum: RV-12/RV-12iS 08-04-2020, 01:55 PM
Replies: 6
Views: 530
Posted By Piper J3
Wow - found one more - we were really...

Wow - found one more - we were really moving...

https://i.postimg.cc/L6s181MQ/Screen-Shot-2020-08-04-at-3-52-55-PM.png (https://postimg.cc/5jZ0Pjy8)
Forum: RV-12/RV-12iS 08-04-2020, 01:31 PM
Replies: 6
Views: 530
Posted By Piper J3
Ground speed is an entirely different matter. ...

Ground speed is an entirely different matter. I've had the 12 scooting across the ground pretty good on few occasions...

https://i.postimg.cc/h4bktFtt/Screen-Shot-2020-08-04-at-3-23-15-PM.png...
Forum: RV-12/RV-12iS 08-04-2020, 12:22 PM
Replies: 6
Views: 530
Posted By Piper J3
Seems a bit too much. Best I've seen is 135...

Seems a bit too much. Best I've seen is 135 MPHTAS (117KTAS) @7500'MSL. That's with wheel fairings, full fuel, and 2 crew.

https://i.postimg.cc/sgrYw8Rb/Screen-Shot-2020-08-04-at-2-17-42-PM.png...
Forum: RV-12/RV-12iS 08-04-2020, 07:59 AM
Replies: 32
Views: 2,730
Posted By Piper J3
I get it. Rotax says burp the engine to check...

I get it. Rotax says burp the engine to check accurate oil level...

There is no danger in turning a 912 Rotax by hand. Ignition switches can even be left on. No spark will occur because...
Forum: RV-12/RV-12iS 07-31-2020, 01:55 PM
Replies: 1
Views: 412
Posted By Piper J3
Expanded Scale for Pitch Trim Indicator

Dynon and Van’s tell you to set the end points of the trim indicator so full travel trim is indicated at both ends of the scale. I have my trim indicator set to show only the portion of trim that is...
Forum: RV-12/RV-12iS 07-29-2020, 07:20 AM
Replies: 32
Views: 2,730
Posted By Piper J3
In addition to burping for oil level check, and...

In addition to burping for oil level check, and verifying no hydraulic lock, it’s a good idea to hand-turn a few prop blades to ascertain general engine health.

• Compressions same on all four...
Forum: RV General Discussion/News 07-27-2020, 11:29 AM
Replies: 15
Views: 2,054
Posted By Piper J3
A friend and I social distanced with our RV-12's...

A friend and I social distanced with our RV-12's in loose formation at 6500 MSL

https://i.postimg.cc/BZRqH0yN/E194-A529-5488-4-A2-C-A733-45-AE3678-F742.jpg (https://postimg.cc/3WC5QP3D)
Forum: RV General Discussion/News 07-27-2020, 10:10 AM
Replies: 53
Views: 8,481
Posted By Piper J3
The secret is using telecoil. Telecoil is an...

The secret is using telecoil. Telecoil is an induction pickup in the hearing aid. Shut off hearing aid microphone and use telecoil option with headset. If you hear electrical noise (engine...
Forum: RV-12/RV-12iS 07-26-2020, 11:56 AM
Replies: 32
Views: 2,730
Posted By Piper J3
I would at least hand-turn four blades before...

I would at least hand-turn four blades before engaging electric starter. Shortcuts can result in expensive repairs...
Forum: RV-12/RV-12iS 07-26-2020, 12:11 AM
Replies: 29
Views: 3,990
Posted By Piper J3
Can't blame you... Too many lawyers looking to...

Can't blame you... Too many lawyers looking to cash-up and too many people doing stupid things or pushing envelop and then looking for deep pockets.

I would not want to be an aircraft mechanic or...
Forum: RV-12/RV-12iS 07-25-2020, 11:54 PM
Replies: 32
Views: 2,730
Posted By Piper J3
Actually, the burp procedure does not "prevent"...

Actually, the burp procedure does not "prevent" hydraulic lock - it is just a check for hydraulic lock. If you hand-turn four blades then you know that all four combustion chambers are free of oil...
Forum: RV-12/RV-12iS 07-25-2020, 04:20 PM
Replies: 29
Views: 3,653
Posted By Piper J3
Something I've Never Seen Before...

I have been flying my RV-12 since 2015. Last night a friend took a video of my takeoff and sent it to me via email today. This is the first time I have seen my plane flying from outside the cabin. ...
Forum: RV-12/RV-12iS 07-25-2020, 09:58 AM
Replies: 21
Views: 1,381
Posted By Piper J3
Actually, the "burb" is not compression, but...

Actually, the "burb" is not compression, but rather compression leakage past the piston rings, which pressurizes the crankcase and forces the residual oil back to the oil tank.

Two reasons to...
Forum: RV-12/RV-12iS 07-24-2020, 02:33 PM
Replies: 29
Views: 3,653
Posted By Piper J3
There is a very stout crossbar made of extruded...

There is a very stout crossbar made of extruded aluminum that the jugs are pressing against. I think its pretty safe - certainly no worse than if jugs were loose in a trunk. I drive extra careful...
Forum: RV-12/RV-12iS 07-24-2020, 07:32 AM
Replies: 29
Views: 3,653
Posted By Piper J3
Fuel Weighs a Ton…

I filled four jugs of fuel with 6 gallons each and took to the airplane this morning. Fuel is a very heavy commodity. Maybe lifting the fuel jugs is starting to show my age. Gives me a good...
Forum: RV-12/RV-12iS 07-23-2020, 12:38 PM
Replies: 16
Views: 2,123
Posted By Piper J3
I had part #29 crack. Search my posts...

I had part #29 crack. Search my posts...
Forum: RV-12/RV-12iS 07-23-2020, 12:34 PM
Replies: 29
Views: 3,990
Posted By Piper J3
Slight error here... no pilot is ever "finished"...

Slight error here... no pilot is ever "finished" learning. Also, keep in mind most dangerous time is newly "minted" pilot with PP SEL in his/her wallet.
Forum: RV General Discussion/News 07-23-2020, 08:01 AM
Replies: 53
Views: 8,481
Posted By Piper J3
It shouldn’t matter which mgr hearing aid or...

It shouldn’t matter which mgr hearing aid or which mgr headset. Headset doesn’t necessarily have to be ANR but it enhances the experience.

The key is that the hearing aid must have telecoil and...
Forum: RV-12/RV-12iS 07-22-2020, 01:08 PM
Replies: 4
Views: 612
Posted By Piper J3
Very best of luck to you Hans. I like the "stain...

Very best of luck to you Hans. I like the "stain glass" paint job.
Forum: RV-12/RV-12iS 07-19-2020, 09:50 AM
Replies: 16
Views: 2,123
Posted By Piper J3
The ignition coils and CDI units are mounted on...

The ignition coils and CDI units are mounted on top of the engine which is tightly cowled on the RV-12. I open the oil access door when the airplane is parked to let the heat percolate out. ...
Forum: RV-12/RV-12iS 07-17-2020, 01:49 PM
Replies: 29
Views: 3,653
Posted By Piper J3
I made an abbreviated checklist for engine items...

I made an abbreviated checklist for engine items and fastened it to the inside of the cowling oil door.

A good reminder as you're "staring into the...
Forum: RV-12/RV-12iS 07-17-2020, 01:02 PM
Replies: 11
Views: 1,124
Posted By Piper J3
Follow the instructions that come with the...

Follow the instructions that come with the springs to identify L & R.
Forum: Alternative Engines 07-17-2020, 03:53 AM
Replies: 525
Views: 94,662
Posted By Piper J3
House move must be progressing well with restart...

House move must be progressing well with restart on airplane project.

Good to see COG in acceptable limit. Airplane design / modification is an art form with tradeoff's affecting everything. ...
Forum: RV-12/RV-12iS 07-16-2020, 04:03 PM
Replies: 11
Views: 1,124
Posted By Piper J3
I made new friction lock (don't know actual name...

I made new friction lock (don't know actual name of part) for throttle. This is tapered piece that pinches the throttle when knurled knob is tightened.

Sorry for bad explanation...
Forum: RV-12/RV-12iS 07-16-2020, 11:14 AM
Replies: 7
Views: 1,167
Posted By Piper J3
Also, check the "stretch" of the springs. I...

Also, check the "stretch" of the springs. I installed stainless steel springs three years ago and had to bend the welded loops on the exhaust tubes in order to achieve a decent amount of tension...
Forum: RV-12/RV-12iS 07-15-2020, 07:32 PM
Replies: 16
Views: 1,374
Posted By Piper J3
One more thing to try... unplug the ANR headsets...

One more thing to try... unplug the ANR headsets and run them strictly as noise canceling with supplied battery power. In other words - eliminate comm and intercom for testing purposes.

I flew...
Forum: RV-12/RV-12iS 07-15-2020, 02:41 PM
Replies: 16
Views: 1,374
Posted By Piper J3
Not making light of this... wondering if this is...

Not making light of this... wondering if this is somewhat of a prevalent problem - why are we just hearing about this now?
Forum: RV-12/RV-12iS 07-15-2020, 10:47 AM
Replies: 16
Views: 1,374
Posted By Piper J3
L-R EGT's match pretty closely at cruise RPM?

L-R EGT's match pretty closely at cruise RPM?
Forum: RV-12/RV-12iS 07-15-2020, 07:36 AM
Replies: 16
Views: 1,374
Posted By Piper J3
Aeronca 11-AC Chief I learned to fly in had...

Aeronca 11-AC Chief I learned to fly in had placard for McCauley metal prop that stated no continuous operation between 1860 - 1930 RPM. Prop / engine combination apparently had bad harmonic in that...
Forum: RV-12/RV-12iS 07-15-2020, 03:36 AM
Replies: 16
Views: 1,374
Posted By Piper J3
I have never experienced this problem. I have...

I have never experienced this problem. I have several hundred hours flying in two different ULS powered RV-12’s. Rotax uses a “hunting” ratio on the gearbox to spread wear pattern evenly and I...
Forum: RV-12/RV-12iS 07-13-2020, 07:34 PM
Replies: 7
Views: 1,247
Posted By Piper J3
For what it's worth... Two years ago we have had...

For what it's worth... Two years ago we have had a E-LSA RV-12 with 912ULS up to 14,500 MSL with two 190# folks on board. Don't remember particulars...
Forum: RV-12/RV-12iS 07-13-2020, 10:36 AM
Replies: 29
Views: 3,653
Posted By Piper J3
Prettiest Day of the Year...

I didn’t want to start a new thread, so I’ll stick this here…

For about as long as I can remember I have had a compulsion to judge the weather and in particular to try to pick the prettiest day of...
Forum: RV-12/RV-12iS 07-13-2020, 03:05 AM
Replies: 29
Views: 3,653
Posted By Piper J3
Wait, wait... my frig needs...

Wait, wait... my frig needs repair.

https://i.postimg.cc/T1LNvSds/Screen-Shot-2020-07-13-at-4-47-26-AM.png (https://postimages.org/)
Forum: RV General Discussion/News 07-12-2020, 02:18 PM
Replies: 21
Views: 3,810
Posted By Piper J3
I changed out 1632 Li coin cell batteries on my...

I changed out 1632 Li coin cell batteries on my Tire Pressure Monitor Sensors and verified balance weights are still in place. All is...
Forum: RV-12/RV-12iS 07-11-2020, 06:45 PM
Replies: 13
Views: 2,697
Posted By Piper J3
I actually did the opposite – I installed wheel...

I actually did the opposite – I installed wheel fairing and left strut fairing off. I also cut off the trailer hook on the nose gear.

I don’t notice any difference in cruise speed without strut...
Forum: RV-12/RV-12iS 07-11-2020, 11:11 AM
Replies: 12
Views: 2,850
Posted By Piper J3
Actually, the fuel burn is less doing takeoff /...

Actually, the fuel burn is less doing takeoff / landings than steady-state cruise...
Forum: RV-12/RV-12iS 07-10-2020, 05:43 PM
Replies: 29
Views: 3,653
Posted By Piper J3
I added a small magnet before someone mentioned...

I added a small magnet before someone mentioned squeezing the tube. There is some concern about having a magnet in the baggage compartment in proximity to the magnetometer. I have checked compass...
Forum: RV-12/RV-12iS 07-10-2020, 12:46 PM
Replies: 10
Views: 1,184
Posted By Piper J3
Is brake fade the underlining reason for higher...

Is brake fade the underlining reason for higher flash point fluid?
Forum: RV-12/RV-12iS 07-09-2020, 07:27 PM
Replies: 6
Views: 977
Posted By Piper J3
Once you get it resolved, you'll need one of...

Once you get it resolved, you'll need one of these...

https://i.postimg.cc/qqNX6nmy/4332-F707-6209-4-ED9-8-BD3-BBF96-E8-EFE58.jpg (https://postimg.cc/Pvk8BLn5)
Forum: COMM 07-09-2020, 06:23 PM
Replies: 1
Views: 575
Posted By Piper J3
Garmin SL-40 Software Version

Does anyone know what is different between software Ver 2.1 and Ver 2.2 for Garmin SL-40 comm?

Is Ver 2.2 latest software for this radio?

Thanks in advance...
Forum: RV-12/RV-12iS 07-09-2020, 11:30 AM
Replies: 29
Views: 3,653
Posted By Piper J3
The solution to rotating handle is to remove...

The solution to rotating handle is to remove shaft and then squeeze barrel tube a little bit so that it provides slight resistance to unwanted turning...
Forum: RV-12/RV-12iS 07-09-2020, 08:21 AM
Replies: 29
Views: 3,653
Posted By Piper J3
It's Always Something Gilda?

Just some random thoughts while sheltering-in-place?

Remember Gilda Radner from Saturday Night Live? She used to say ?it?s always something?. I kind of adopted that philosophy with the RV-12 that...
Forum: RV-12/RV-12iS 07-08-2020, 08:25 AM
Replies: 20
Views: 2,443
Posted By Piper J3
Send me your email and I'll add you to the...

Send me your email and I'll add you to the expanding list of Ohio RV-12's...
Forum: RV-12/RV-12iS 07-07-2020, 07:12 PM
Replies: 20
Views: 2,443
Posted By Piper J3
Wow, that's expensive for one spinner. I think I...

Wow, that's expensive for one spinner. I think I would try 3M Chrome Vinyl. You can make lots of mistakes and do-over's for $400...
Forum: RV-12/RV-12iS 07-07-2020, 09:32 AM
Replies: 8
Views: 928
Posted By Piper J3
Check McMaster-Carr. Eyelet End Fittings for...

Check McMaster-Carr. Eyelet End Fittings for Gas Springs...
Forum: COMM 07-06-2020, 06:34 PM
Replies: 5
Views: 706
Posted By Piper J3
Update 7-6-20. I removed instrument bay cover...

Update 7-6-20. I removed instrument bay cover to look at D-sub on back of Garmin radio tray and discovered the Coax connector was loose. The connector is held in place with two nuts and one had...
Forum: RV-12/RV-12iS 07-06-2020, 12:54 AM
Replies: 20
Views: 2,626
Posted By Piper J3
The crossover tube probably doesn?t have to be...

The crossover tube probably doesn?t have to be completely isolated to do a good carb balance. You want to get the carbs closely synchronized and then the crossover tube will mitigate small...
Forum: RV-12/RV-12iS 07-05-2020, 06:41 PM
Replies: 20
Views: 2,626
Posted By Piper J3
I tried the top manifold ports early-on using...

I tried the top manifold ports early-on using individual vacuum gauges normally used for motorcycles. I made plugs for the rubber crossover tube to seal it off. I had to install needle valves...
Forum: RV-12/RV-12iS 07-05-2020, 10:45 AM
Replies: 9
Views: 1,274
Posted By Piper J3
No surprise there. That's why the ball-end...

No surprise there. That's why the ball-end driver is necessary...
Forum: RV-12/RV-12iS 07-05-2020, 10:28 AM
Replies: 9
Views: 1,274
Posted By Piper J3
Correct on the limited space available. Scott is...

Correct on the limited space available. Scott is suggesting to cut off ball-end Allen wrench so you have the ball with maybe 2" of hex shaft remaining. Then slip a socket with torque wrench over...
Forum: RV-12/RV-12iS 07-04-2020, 12:38 AM
Replies: 8
Views: 1,138
Posted By Piper J3
You might find someone who is changing out Lexan...

You might find someone who is changing out Lexan for new Plexiglass where old Lexan is still in good shape. That's what I did. Now I fuel with FLO FAST hand pump for Mogas and no more splashing. ...
Forum: RV-12/RV-12iS 07-03-2020, 10:58 AM
Replies: 18
Views: 2,499
Posted By Piper J3
DaleB - I sent you a PM...

DaleB -

I sent you a PM...
Forum: RV-12/RV-12iS 07-02-2020, 07:14 PM
Replies: 18
Views: 2,499
Posted By Piper J3
Scott - Kit is for converting from SL40 to...

Scott -

Kit is for converting from SL40 to GRT200?

Wiring conversion is for early SN (120058) with D-180, GTX327, SL40?

I tried searching Van's parts for 12 GTR-200 RETROFIT with no luck. Can...
Forum: RV-12/RV-12iS 07-02-2020, 06:47 AM
Replies: 10
Views: 1,882
Posted By Piper J3
I'm in the process of troubleshooting stubborn...

I'm in the process of troubleshooting stubborn SL40 comm radio problem and this thread responses gave me good laugh. Well, back to work...
Forum: COMM 07-01-2020, 01:39 PM
Replies: 5
Views: 706
Posted By Piper J3
Update today ? I removed the mini iPad at the...

Update today ?

I removed the mini iPad at the top of the radio stack so I could look at the top of the Garmin SL40 tray. Back connector has screws tight. All female socket pins look to be seated...
Forum: RV-12/RV-12iS 07-01-2020, 01:30 PM
Replies: 32
Views: 4,574
Posted By Piper J3
These work great. Tight seal and no fumes in the...

These work great. Tight seal and no fumes in the car with jugs full or empty.

Amazon - 4 Pack VP 5 Gallon Square Red Racing Utility Jugs with 4 Deluxe Filler Hoses...
Forum: COMM 07-01-2020, 12:28 AM
Replies: 5
Views: 706
Posted By Piper J3
Update - I disassembled entire radio and...

Update - I disassembled entire radio and reassembled. Nothing inside radio looks out of place. Radio acts solid when airplane powered in hanger but popping noise returns when engine started and...
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