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Search: Posts Made By: Piper J3
Forum: RV-12 01-16-2018, 11:36 AM
Replies: 4
Views: 828
Posted By Piper J3
In another thread titled "Air Induction Option" I...

In another thread titled "Air Induction Option" I wrote that the J3-Cub I owned for more than twenty years had an updraft carb on Continental A65-8 engine. You could view the entire carb through the...
Forum: My RV Build Project 01-16-2018, 02:41 AM
Replies: 50
Views: 20,416
Posted By Piper J3
I have a question... I'm not a builder. I see...

I have a question... I'm not a builder. I see the blue protective film on the skins and wonder how you cut the film to expose the bare aluminum for riveting. Do you use a razor blade, and if so,...
Forum: RV-12 01-13-2018, 07:36 AM
Replies: 73
Views: 8,648
Posted By Piper J3
I read this report and to me it sounds more like...

I read this report and to me it sounds more like an infomercial where a guy cuts his boat in half and then tapes it back together with his wonder product and it doesn’t leak water. Not a whole lot...
Forum: RV-12 01-05-2018, 07:33 PM
Replies: 6
Views: 717
Posted By Piper J3
The J3-Cub I owned for more than twenty years had...

The J3-Cub I owned for more than twenty years had an updraft carb on Continental A65-8 engine. You could view the entire carb through the open cowling. I would land on a hot summer day and the carb...
Forum: RV-12 01-05-2018, 10:10 AM
Replies: 6
Views: 717
Posted By Piper J3
Everyone always talks about heated air feeding...

Everyone always talks about heated air feeding the RV-12 Rotax. I’d be interested if someone has taken actual carb intake air temps while in flight.

I’ll bet there’s plenty of ram air through the...
Forum: RV-12 01-04-2018, 10:37 AM
Replies: 11
Views: 1,370
Posted By Piper J3
With eBay... use PayPal and option for payment...

With eBay... use PayPal and option for payment only when item is delivered. Beautiful solution. Credit card info is hidden from seller and funds not at risk for fraud.
Forum: RV-12 01-04-2018, 10:29 AM
Replies: 11
Views: 1,370
Posted By Piper J3
Patience is like airspeed, don't want to run out...

Patience is like airspeed, don't want to run out of either one...
Forum: RV-12 01-02-2018, 07:24 PM
Replies: 9
Views: 536
Posted By Piper J3
Cold in the early AM in AZ Pleeeeez...

Cold in the early AM in AZ

Pleeeeez...
Forum: ADS-B 01-02-2018, 07:18 PM
Replies: 166
Views: 14,892
Posted By Piper J3
So what are you guys saying... I have GTX-327 in...

So what are you guys saying... I have GTX-327 in my RV-12 and was planning UAVIONIX ECHO-ATU-20 just sniffing the xponder instead of hard wire connection. I fly mostly in MODE C local.

This still...
Forum: RV-9/9A 01-02-2018, 07:07 PM
Replies: 21
Views: 2,219
Posted By Piper J3
Stupid question... if inside is rusted, then what...

Stupid question... if inside is rusted, then what components will you be keeping - maybe just the cases and chrome cylinders back to size?
Forum: RV-12 01-02-2018, 05:58 PM
Replies: 9
Views: 536
Posted By Piper J3
Also, might be too warm where you're located......

Also, might be too warm where you're located...
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http://i66.tinypic.com/254vi1x.png
Forum: RV-12 01-02-2018, 04:29 PM
Replies: 9
Views: 536
Posted By Piper J3
Check for bad ground wire to fuel tank.

Check for bad ground wire to fuel tank.
Forum: RV-12 01-02-2018, 04:25 PM
Replies: 9
Views: 1,625
Posted By Piper J3
Manual trim tab on rudder?

Manual trim tab on rudder?
Forum: RV General Discussion/News 12-31-2017, 10:43 AM
Replies: 5
Views: 377
Posted By Piper J3
URB-E Sport Folding Electric Bicycle

This looks interesting. 30 lbs folding electric bicycle… https://www.urb-e.com/sport/

http://i63.tinypic.com/19m9si.png
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http://i64.tinypic.com/b5s03p.png
Forum: RV-12 12-30-2017, 12:18 PM
Replies: 221
Views: 107,124
Posted By Piper J3
I searched this thread... trying to find metric...

I searched this thread... trying to find metric allen wrench size to fit the engine mounting cap screws so I can have correct tool at hand when I next remove cowling.

Does anyone know metric allen...
Forum: RV-12 12-29-2017, 10:12 AM
Replies: 11
Views: 1,627
Posted By Piper J3
Waiting for Spring...

Snug as a bug in rug...

http://i66.tinypic.com/2j5am9t.png
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http://i65.tinypic.com/qn4b4h.png
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http://i65.tinypic.com/30xg3mt.png
Forum: RV Ongoing Maintenance Issues 12-26-2017, 08:15 PM
Replies: 29
Views: 4,065
Posted By Piper J3
I used a UV tracer and blacklight to find a...

I used a UV tracer and blacklight to find a stuborn fuel leak. See http://www.vansairforce.com/community/showpost.php?p=1167652&postcount=28

Both items available on eBay.

This would work equally...
Forum: RV-12 12-16-2017, 11:30 AM
Replies: 150
Views: 19,026
Posted By Piper J3
I think the RV-12 cools pretty good with...

I think the RV-12 cools pretty good with Evans...

77F OAT, 214F Oil Temp, and 193/198 CHT's.

http://i64.tinypic.com/avk8yr.png
Forum: RV-12 12-16-2017, 09:00 AM
Replies: 150
Views: 19,026
Posted By Piper J3
Been lurking here but this prompts the...

Been lurking here but this prompts the question... why did Rotax change from Evans Waterless Coolant if localized boiling can be problematic? Seems it would be better to error on safe side and have...
Forum: RV-12 12-15-2017, 11:45 AM
Replies: 11
Views: 1,370
Posted By Piper J3
Looks like $5 shipping from Riga, Latvia to USA...

Looks like $5 shipping from Riga, Latvia to USA...
Forum: RV-12 12-13-2017, 05:34 PM
Replies: 150
Views: 19,026
Posted By Piper J3
Or to add to this question... Scott mentioned...

Or to add to this question... Scott mentioned that the 12 demonstrator has more than 2000TT. I'm wondering if its still on it's first engine? Has any top-end work been done to it? Compressions still...
Forum: RV-12 12-12-2017, 08:59 AM
Replies: 6
Views: 1,485
Posted By Piper J3
Scott I'm curious, is the original 12 with more...

Scott

I'm curious, is the original 12 with more than 2000TT, still on it's first engine? Has any top-end work been done to it? Compressions still good?

Sorry for redirecting thread...
Forum: RV-12 12-11-2017, 10:03 AM
Replies: 150
Views: 19,026
Posted By Piper J3
For 1352CC engine the RV-12 literally leaps off...

For 1352CC engine the RV-12 literally leaps off the ground. I fly off grass usually with two people @ 200# each and often with full fuel.

The beauty of the 912 engine installation in the 12 is no...
Forum: RV-12 12-07-2017, 04:51 PM
Replies: 150
Views: 19,026
Posted By Piper J3
Rotax 912 % Power...

Rotax 912 % Power Graph...
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http://i64.tinypic.com/2dbo5yb.jpg
Forum: RV-12 12-07-2017, 02:19 PM
Replies: 28
Views: 2,374
Posted By Piper J3
John - is 200F CHT accomplished by blocking off...

John - is 200F CHT accomplished by blocking off coolant radiator? Good trick with near 0F OAT...
Forum: RV-12 12-07-2017, 07:33 AM
Replies: 8
Views: 1,068
Posted By Piper J3
I'm sure you have done W&B calculations but from...

I'm sure you have done W&B calculations but from your photo the setup looks heavier than a 912 and seems further forward. Do you have to make other changes to keep COG correct?
Forum: RV-12 12-05-2017, 10:26 PM
Replies: 12
Views: 1,071
Posted By Piper J3
I was thinking #22. But now I'm remembering #22...

I was thinking #22. But now I'm remembering #22 is a hex head screw and not socket head...
Forum: RV-12 12-05-2017, 09:54 PM
Replies: 11
Views: 2,374
Posted By Piper J3
David- Just curious if you sold your legacy...

David-

Just curious if you sold your legacy fuselage.

I keep thinking about building a new machine...
Forum: RV-12 12-05-2017, 09:26 PM
Replies: 12
Views: 1,071
Posted By Piper J3
Do you mean the screw on top of the intake...

Do you mean the screw on top of the intake manifold that you remove, and in its place, you screw in a barb fitting for rubber hose connection to vacuum gage for balancing carbs? By memory, that...
Forum: RV-12 12-02-2017, 07:25 PM
Replies: 4
Views: 840
Posted By Piper J3
See photo below… I don’t have software tools but...

See photo below… I don’t have software tools but maybe someone can measure camber angle with respect to hanger floor. I installed Dresser 500-5 6 PLY AWBS RETREAD, ELITE PREMIUM 2 GROOVE (ELITE) 120...
Forum: RV-12 12-01-2017, 07:10 PM
Replies: 14
Views: 2,259
Posted By Piper J3
What did the head look like? Perhaps foreign...

What did the head look like? Perhaps foreign object got into combustion chamber and played pingpong?
Forum: RV General Discussion/News 11-25-2017, 07:21 PM
Replies: 10
Views: 1,003
Posted By Piper J3
This works well for...

This works well for me...http://www.vansairforce.com/community/showpost.php?p=1211903&postcount=74
Forum: RV-12 11-25-2017, 03:54 PM
Replies: 41
Views: 5,077
Posted By Piper J3
Maybe this post is what you're referring...

Maybe this post is what you're referring to...http://www.vansairforce.com/community/showpost.php?p=1079335&postcount=1
Forum: RV-12 11-24-2017, 09:15 PM
Replies: 41
Views: 5,077
Posted By Piper J3
I'd use a little caution here... "diesel only"...

I'd use a little caution here... "diesel only" means just that. There are similar style pumps made specifically for gasoline.

Just saying...
Forum: RV-12 11-24-2017, 03:10 PM
Replies: 16
Views: 1,553
Posted By Piper J3
I'm wandering if you transposed a couple of...

I'm wandering if you transposed a couple of numbers. Pg 47-07 of the Powerplant Instructions state 71.4 degrees prop pitch.
Forum: RV-12 11-24-2017, 12:44 PM
Replies: 16
Views: 1,553
Posted By Piper J3
Not hard to use Van's sheetmetal stamped pitch...

Not hard to use Van's sheetmetal stamped pitch gage to set blades to within 0.1 degree of each other. Entire process takes less than an hour. For me, based at 1K MSL and flying 3-7K MSL... 71.4...
Forum: Painting your RV 11-16-2017, 09:33 AM
Replies: 14
Views: 2,743
Posted By Piper J3
In the pics I included in above post... the hinge...

In the pics I included in above post... the hinge is unpainted. Vinyl is wrapped around and over the hinge and tucked against the hinge line. You could paint the hinge prior to vinyl application...
Forum: Painting your RV 11-16-2017, 02:57 AM
Replies: 14
Views: 2,743
Posted By Piper J3
I bought 3M 1080 on eBay and wrapped the...

I bought 3M 1080 on eBay and wrapped the stabilator on my RV-12. Raised pull rivet heads are no problem - just make pinhole to release trapped air and squeeze vinyl around the rivets. Looks like...
Forum: ADS-B 11-11-2017, 03:16 PM
Replies: 27
Views: 2,779
Posted By Piper J3
Wow, you guys are wild. That's the thing about...

Wow, you guys are wild. That's the thing about people who tinker - other's willing to help and share ideas. High tech these days though. When I was a kid I remember a neighbor building a wooden...
Forum: RV-10 11-09-2017, 05:58 PM
Replies: 13
Views: 1,140
Posted By Piper J3
See......

See... http://www.vansairforce.com/community/showpost.php?p=1061377&postcount=288
Forum: RV-12 11-04-2017, 08:29 PM
Replies: 8
Views: 1,551
Posted By Piper J3
I installed gear leg/fuselage fairings and it...

I installed gear leg/fuselage fairings and it didn't stop air ingress. See http://www.vansairforce.com/community/showpost.php?p=1210612&postcount=5.

I think air comes in through the spar openings. ...
Forum: RV-12 11-04-2017, 05:32 PM
Replies: 8
Views: 1,551
Posted By Piper J3
Make RV-12 Cabin More Habitable in Winter

The weather is getting cold and I decided to tackle the problem of cold air passing forward from the baggage compartment.

The solution consists of one piece of sheet aluminum, two pieces of...
Forum: RV-12 10-30-2017, 05:27 PM
Replies: 16
Views: 2,379
Posted By Piper J3
I balanced my carbs with two vacuum gages. When...

I balanced my carbs with two vacuum gages. When I was satisfied that they were closely synched I then transferred the vacuum gages L>R to make sure they was no gage bias. I then looked at EGT's for...
Forum: RV-12 10-29-2017, 04:50 PM
Replies: 12
Views: 1,547
Posted By Piper J3
I guess this is what happens when we get old....

I guess this is what happens when we get old. Memory is off a little bit. I tried...

Below is photo referenced by Scott.
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http://i65.tinypic.com/2dvijae.png
Forum: RV-12 10-29-2017, 10:05 AM
Replies: 12
Views: 1,547
Posted By Piper J3
I don’t have a picture but maybe I can describe...

I don’t have a picture but maybe I can describe it…

A plastic (UHMW) plate about 2”H x 3”W is installed on the rollover bar. On the face of the plastic is a metal plate with two cam grooves – upper...
Forum: RV-12 10-26-2017, 08:09 AM
Replies: 84
Views: 12,128
Posted By Piper J3
John Did you route the antenna coax to the tail...

John

Did you route the antenna coax to the tail cone through the central tunnel?

Where did you mount your GPS hockey puck antenna?

I'm asking so many questions because I, and probably other early...
Forum: RV-12 10-25-2017, 09:44 PM
Replies: 16
Views: 2,379
Posted By Piper J3
When you're finished you can hook your gages up...

When you're finished you can hook your gages up in reverse L->R / R->L to verify any gage errors.
Forum: RV-12 10-25-2017, 09:42 PM
Replies: 84
Views: 12,128
Posted By Piper J3
Can you share some photos of the installation? ...

Can you share some photos of the installation? GPS source and ECHO UAT placement? Also where you installed the UAT(978) antenna.
Forum: RV-12 10-25-2017, 12:46 PM
Replies: 16
Views: 2,379
Posted By Piper J3
Tony - next time you fly take note of EGT's as...

Tony - next time you fly take note of EGT's as engine is warming up. They should be pretty similar if carbs are balanced for idle and off-idle.

Most guys report that right EGT is higher than left...
Forum: RV-12 10-25-2017, 01:41 AM
Replies: 16
Views: 2,379
Posted By Piper J3
Tony - Just curious... how close do your L/R EGT...

Tony -

Just curious... how close do your L/R EGT track each other at idle, mid-range, and cruise RPM?
Forum: RV-12 10-24-2017, 10:54 AM
Replies: 30
Views: 8,215
Posted By Piper J3
I'll jump in here... I installed SS exhaust...

I'll jump in here... I installed SS exhaust springs from Spruce 100 hours ago. They were loose during the install so I re-bent the welded attachment bales to stretch the springs and add preload. ...
Forum: RV-12 10-23-2017, 09:50 AM
Replies: 2
Views: 913
Posted By Piper J3
How The 912 Got Its Name...

I asked question over in the Rotax Owner’s Forum…

Unlike Continental/Lycoming where IO360 means Injected Opposed 360 Cubic Inch - What is the significance of 912 in the model number?...
Forum: RV-12 10-20-2017, 04:59 PM
Replies: 22
Views: 2,147
Posted By Piper J3
Guess I didn't win the RV-12iS... :( Scott -...

Guess I didn't win the RV-12iS... :(

Scott - have a nice weekend. I think I speak for all... Thanks for all you do on this forum.

Oh, and it was a pleasure meeting you at KOSH this summer.
Forum: RV-12 10-20-2017, 03:22 PM
Replies: 22
Views: 2,147
Posted By Piper J3
Do I win prize for having the right answer? ...

Do I win prize for having the right answer? Maybe RV-12iS? :D
Forum: RV-12 10-20-2017, 02:36 AM
Replies: 22
Views: 2,147
Posted By Piper J3
Look here for easy method to find source of tank...

Look here for easy method to find source of tank leak...http://www.vansairforce.com/community/showpost.php?p=1167652&postcount=28 and...
Forum: RV-12 10-19-2017, 01:25 PM
Replies: 26
Views: 2,046
Posted By Piper J3
No, can quite easily be just one carb. Take a...

No, can quite easily be just one carb. Take a look at both EGT's and see if they are close to same temp. If not, higher temp EGT is imbalanced carb and doing most of the "work".
Forum: RV-12 10-19-2017, 01:19 PM
Replies: 22
Views: 2,147
Posted By Piper J3
You've got it right. Just as an aside... When I...

You've got it right. Just as an aside... When I did SB for my tank I elected to not install the new tank vent and instead to keep the vented cap. My reasoning is that I run 93E10 fuel and don't...
Forum: RV-12 10-18-2017, 03:17 PM
Replies: 76
Views: 29,710
Posted By Piper J3
Actually I think the metal is acting like a...

Actually I think the metal is acting like a ground plane with antenna mounted outside. Signal with same antenna inside the hanger was 17/30 and 24/30 where it is installed on the angled drip edge.
Forum: RV-12 10-18-2017, 08:30 AM
Replies: 76
Views: 29,710
Posted By Piper J3
Update on Cell Phone Switch…

Update to post #71 above… The CL1-GSM has proved unreliable when positioned at the hanger. I think either poor proximity to cell tower or 2G cell network is causing the problem.

I have bought a 4G...
Forum: RV-12 10-17-2017, 01:44 AM
Replies: 11
Views: 2,011
Posted By Piper J3
I put the Van's supplied POH against the left...

I put the Van's supplied POH against the left wall of the cabin beneath the armrest. Velcro holds it in position. I didn't like the slide-in tray under the right instrument panel. I also mounted...
Forum: RV-12 10-16-2017, 01:53 PM
Replies: 29
Views: 4,647
Posted By Piper J3
:eek::eek::eek:

:eek::eek::eek:
Forum: RV-12 10-15-2017, 05:31 PM
Replies: 29
Views: 4,647
Posted By Piper J3
I'm in agreement that both flaps and slip are...

I'm in agreement that both flaps and slip are near non-events. Flaps do lower stall speed but don't alter approach angle very much. Slip should decrease altitude without increase in airspeed. The...
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