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Search: Posts Made By: DHeal
Forum: RV-12 07-17-2018, 03:05 PM
Replies: 4
Views: 615
Posted By DHeal
I have been using 107,510 as my K-factor for the...

I have been using 107,510 as my K-factor for the past 300+ hours. This value tracks well with my actual fuel use. My flights typically average about one hour in length -- if you take many...
Forum: RV General Discussion/News 07-15-2018, 05:22 PM
Replies: 11
Views: 986
Posted By DHeal
Perhaps you should check the "dry tappet...

Perhaps you should check the "dry tappet clearance" -- an excessively tight valve train on one cylinder was the cause of an intermittent misfire on one of my O-360s.
Forum: RV-12 07-14-2018, 05:05 PM
Replies: 78
Views: 6,782
Posted By DHeal
I preface the following by saying that I have not...

I preface the following by saying that I have not yet heard back from Sensenich as to their lab verification of the two "cracks" I believe I found in my black-anodized #2AOR5 hub cover. That being...
Forum: RV-12 07-12-2018, 09:39 PM
Replies: 78
Views: 6,782
Posted By DHeal
After I removed the spinner I looked at the small...

After I removed the spinner I looked at the small bit of hub cover that was visible behind the still-installed front spinner plate -- I saw what appeared to be a very small crack located near one of...
Forum: RV-12 07-12-2018, 02:39 PM
Replies: 78
Views: 6,782
Posted By DHeal
Sensenich prop torque values and maintenance...

Sensenich prop torque values and maintenance requirements are also listed in the applicable Sensenich Installation Instructions document at:

http://www.sensenich.com/documents/

Also, be sure that...
Forum: RV-12 07-12-2018, 09:10 AM
Replies: 78
Views: 6,782
Posted By DHeal
I inspected my front hub cover i/a/w the SB and...

I inspected my front hub cover i/a/w the SB and found what appeared to be two cracks in the areas indicated in the SB -- the cracks are very difficult to see. I shipped the hub to Sensenich for...
Forum: RV-12 07-11-2018, 08:30 AM
Replies: 15
Views: 1,726
Posted By DHeal
A data point: My white-painted RV-12 with...

A data point: My white-painted RV-12 with unfilled rivet heads now has 650 hours over 4 years. It is hangared and has never been washed (other than the occasional wipe-down with a damp rag and "dry...
Forum: RV-12 07-10-2018, 06:42 PM
Replies: 78
Views: 6,782
Posted By DHeal
FYI: New SB 18-07-05 on RV-12 Sensenich Props

FYI: New SB 18-07-05 on RV-12 Sensenich Props

http://www.vansaircraft.com/pdf/service_bulletins/sb18-07-05.pdf
Forum: RV General Discussion/News 07-09-2018, 02:41 PM
Replies: 8
Views: 655
Posted By DHeal
Otis -- Install aluminum bolts at ends of gas...

Otis -- Install aluminum bolts at ends of gas struts to serve as break-aways?? -- David
Forum: RV-6/6A 07-08-2018, 06:18 PM
Replies: 4
Views: 466
Posted By DHeal
Heated pitot, backup primary instrumentation...

Heated pitot, backup primary instrumentation (gauges and avionics) and adequate electrical system are appropriate. You will find that a good autopilot (including altitude hold) really aids in...
Forum: RV-12 07-07-2018, 03:15 PM
Replies: 20
Views: 1,392
Posted By DHeal
This may be what is being referred...

This may be what is being referred to:

http://www.vansairforce.com/community/showthread.php?t=120649&highlight=purple

http://www.dynonavionics.com/bulletins/support_bulletin_120414.php

I tried...
Forum: RV-12 06-28-2018, 09:58 PM
Replies: 9
Views: 1,298
Posted By DHeal
Dealing with the presence of the belly-mounted...

Dealing with the presence of the belly-mounted comm antenna will likely be a bit of a challenge.
Forum: Safety 06-27-2018, 01:34 PM
Replies: 10
Views: 4,007
Posted By DHeal
I have often found it easier to see the "shadows"...

I have often found it easier to see the "shadows" of power poles rather than the poles themselves. Also, power poles tend to run parallel to roadway edges but not always -- lines crossing roadways...
Forum: RV-12 06-24-2018, 08:22 AM
Replies: 9
Views: 1,298
Posted By DHeal
Here's one thread: ...

Here's one thread:

http://www.vansairforce.com/community/showthread.php?t=121914&highlight=lift

If I were to do this, I guess I would build a relatively flat wooden cradle that supported the...
Forum: Traditional Aircraft Engines 06-18-2018, 11:21 AM
Replies: 21
Views: 2,301
Posted By DHeal
Adequate fuel flow from tanks to carb? Fuel tank...

Adequate fuel flow from tanks to carb? Fuel tank vent system OK? Dry tappet clearances OK? Same rough issue on each mag and/or on both?
Forum: RV-12 06-16-2018, 06:44 PM
Replies: 10
Views: 1,696
Posted By DHeal
The strength and direction of winds aloft are...

The strength and direction of winds aloft are also important when flying in mountainous areas. Maintaining an appropriate altitude above ridge lines during high wind conditions is prudent. The low...
Forum: RV-12 06-07-2018, 02:04 PM
Replies: 15
Views: 1,305
Posted By DHeal
What Tony said! $100 or less and 5 minutes for a...

What Tony said! $100 or less and 5 minutes for a VFR check. Read the Dynon manual so that YOU know what needs to be done -- frequently the tech doesn't know how to conduct a VFR check on a Dynon.
Forum: RV-12 06-06-2018, 10:19 AM
Replies: 12
Views: 2,275
Posted By DHeal
Jim -- I trust that you know NOT to turn the...

Jim --

I trust that you know NOT to turn the ROTAX 912's propeller backwards any significant amount. Doing so has the potential to introduce air into the oil system -- not a good thing.

BTW,...
Forum: RV-12 06-06-2018, 08:41 AM
Replies: 12
Views: 2,275
Posted By DHeal
First off, be sure that there is oil in the...

First off, be sure that there is oil in the engine. :p

Second, be sure you are pulling the prop through relatively slowly with a 2-3 second pause at the point of each cylinder's maximum compression...
Forum: RV-12 06-04-2018, 06:59 PM
Replies: 21
Views: 2,522
Posted By DHeal
Doug -- Sure you can do that. I just didn't want...

Doug -- Sure you can do that. I just didn't want an extra wire in there. In 640 hours I haven't needed to jump the PC-680 so an "emergency jump" fix serves me OK. A plug-in mini-jumper connection...
Forum: RV-12 06-03-2018, 09:00 AM
Replies: 21
Views: 2,522
Posted By DHeal
I've thought about carrying one of those little...

I've thought about carrying one of those little lithium 12-volt battery packs, but I don't have any real world knowledge as to whether or not they would be useful starting up a 912.

Instead, I...
Forum: RV Ongoing Maintenance Issues 05-25-2018, 06:17 PM
Replies: 12
Views: 2,386
Posted By DHeal
If you do your own re-lining be sure to acquire...

If you do your own re-lining be sure to acquire the type of lining rivet setting tool that uses a screw for setting the rivets -- do not use the type of riveter that requires a hammer. As I recall,...
Forum: RV-12 05-21-2018, 09:01 PM
Replies: 2
Views: 856
Posted By DHeal
The pre-bent tab I received from Van's was...

The pre-bent tab I received from Van's was perfect right out of the box for my rudder trim needs. When you install the tab, sneak up on the pull-rivets located near the rudder's trailing edge --...
Forum: RV-12 05-21-2018, 11:28 AM
Replies: 8
Views: 1,272
Posted By DHeal
Yup, like Alex said.

Yup, like Alex said.
Forum: Traditional Aircraft Engines 05-19-2018, 05:12 PM
Replies: 5
Views: 1,276
Posted By DHeal
Good video on aircraft fuel pumps...

Good video on aircraft fuel pumps at:

https://www.youtube.com/watch?v=_BfwuUjh_lA

Spring is very stiff, doesn't move much and is hard to move manually.
Forum: RV General Discussion/News 05-17-2018, 02:20 PM
Replies: 4
Views: 390
Posted By DHeal
Rebuild your broken DC headset with a "Headsets,...

Rebuild your broken DC headset with a "Headsets, Inc." ANR conversion kit -- easy conversion, relatively inexpensive and works great.
Forum: RV-12 05-16-2018, 09:51 AM
Replies: 18
Views: 2,602
Posted By DHeal
I purchased a Cleaveland "Main Squeeze" for my...

I purchased a Cleaveland "Main Squeeze" for my RV-12 project. It's pricey but was indispensable for my build. I have two other manually-operated squeezers that now just sit in my tool drawer while...
Forum: RV-12 05-15-2018, 08:37 AM
Replies: 29
Views: 5,500
Posted By DHeal
I would suggest that the aluminum surfaces...

I would suggest that the aluminum surfaces underlying any such foam blocks be coated with corrosion-resistant paint -- as it appears Jack above (or is it down-under?) has done. Over a period of...
Forum: RV-12 05-13-2018, 01:43 PM
Replies: 9
Views: 1,391
Posted By DHeal
I also rotate the plastic bushings whenever I am...

I also rotate the plastic bushings whenever I am in their neighborhood -- like during the annual Condition Inspection, etc.
Forum: RV General Discussion/News 05-11-2018, 08:39 AM
Replies: 5
Views: 737
Posted By DHeal
I strongly suspect that it is your puller, not...

I strongly suspect that it is your puller, not the rivets that is the problem. I pulled some 12,000+ LP4-3 rivets when building my RV-12 and don't recall ever having a single rivet setting failure...
Forum: RV-12 05-09-2018, 03:15 PM
Replies: 25
Views: 4,913
Posted By DHeal
If powder-coating or covering the panel with...

If powder-coating or covering the panel with vinyl overlay be sure to heed the plan's instructions and file the panel edges to permit the extra clearances required to accommodate the extra film...
Forum: RV-12 05-05-2018, 07:25 PM
Replies: 2
Views: 663
Posted By DHeal
I believe that Van's approved a 3 amp fuse for...

I believe that Van's approved a 3 amp fuse for the starter circuit several years ago -- check with Van's techs. My circa 2013 RV-12 plans depict a 3 amp starter fuse. I have had no problems with...
Forum: RV-12 05-04-2018, 09:02 AM
Replies: 55
Views: 19,172
Posted By DHeal
Here's an "out-of-the-box" thought: Builders of...

Here's an "out-of-the-box" thought: Builders of early RV-12s were required to partially disassemble the ignition modules to install the fiberglas engine plenums. When the builders reinstalled the...
Forum: RV-12 05-04-2018, 08:48 AM
Replies: 11
Views: 1,726
Posted By DHeal
When I get an unusual whiff of fuel smell in my...

When I get an unusual whiff of fuel smell in my RV-12 (occasionally occurs during a high-power climb), I usually suspect a sinking (heavy) float -- I too have replaced many defective (and costly)...
Forum: RV-12 04-27-2018, 05:38 PM
Replies: 13
Views: 1,969
Posted By DHeal
Over-pitching your prop has the potential to...

Over-pitching your prop has the potential to damage your engine. See Figure 1 of ROTAX's SL-912-016R1 at:

https://legacy.rotaxowner.com/si_tb_info/serviceletter/sl-912-016-r1.pdf

I use the...
Forum: COMM 04-23-2018, 09:02 PM
Replies: 15
Views: 1,626
Posted By DHeal
I converted two David Clark 10-H30 passive...

I converted two David Clark 10-H30 passive headsets into ANRs via the Headsets, Inc. ANR conversion kits -- easy to do, relatively cheap and they work very well.
Forum: RV-12 04-23-2018, 03:49 PM
Replies: 3
Views: 1,048
Posted By DHeal
Here's my experience with the RV-12 LEXAN window...

Here's my experience with the RV-12 LEXAN window at 4+ years / 625 hours / 90% mogas 91 with 10% ethanol: I installed the LEXAN window in accordance with Van's plans (i.e., fuel sealant in and...
Forum: RV-12 04-22-2018, 01:50 PM
Replies: 28
Views: 4,373
Posted By DHeal
Also check for debris in the return fuel line...

Also check for debris in the return fuel line metering orifice.
Forum: Traditional Aircraft Engines 04-21-2018, 10:02 AM
Replies: 12
Views: 1,548
Posted By DHeal
Sorry but the engine is 44 years since reman with...

Sorry but the engine is 44 years since reman with an average of 18 hours per year (with long periods of non-use) and is evidencing signs of wear / distress -- it deserves an overhaul. I would...
Forum: RV-12 04-20-2018, 07:24 PM
Replies: 28
Views: 4,992
Posted By DHeal
Here are a few more thoughts: Are the two carbs...

Here are a few more thoughts: Are the two carbs fully seated in their respective rubber sockets? Spark plug wires properly routed to plugs? Were you careful when removing / replacing the spark...
Forum: RV-12 04-20-2018, 11:46 AM
Replies: 28
Views: 4,992
Posted By DHeal
Are carb bowl gaskets properly seated? Did you...

Are carb bowl gaskets properly seated? Did you blow air through the orifice in the lower corner of the carb bowl to clean out any debris (I believe that orifice is part of the start/idle circuit but...
Forum: RV-12 04-18-2018, 11:18 AM
Replies: 6
Views: 1,460
Posted By DHeal
IMHO, this gusset is a real enhancement -- a...

IMHO, this gusset is a real enhancement -- a number of us installed our own versions of this gusset over the past years in response to bent rails. I suggest that if you build your own version you...
Forum: RV-12 04-12-2018, 09:54 PM
Replies: 9
Views: 2,325
Posted By DHeal
Effect on ADHRS? I recall that the plans suggest...

Effect on ADHRS? I recall that the plans suggest squeezing the canopy handle mounting tube a bit to keep the handle from flopping around. I added an O-ring or two as well to increase turning...
Forum: RV-12 04-12-2018, 08:03 PM
Replies: 7
Views: 1,351
Posted By DHeal
As I recall, the Dynon Skyview Installation...

As I recall, the Dynon Skyview Installation Manual has installation templates and wiring information. See Sections 18 and 19 of...
Forum: RV-12 04-09-2018, 09:27 PM
Replies: 11
Views: 2,007
Posted By DHeal
Most likely a loose or corroded wire or...

Most likely a loose or corroded wire or connection. Wiggle the CHTL sensor connection (under left front cylinder head) to see if you can duplicate the erratic reading.
Forum: RV-12 04-04-2018, 09:21 PM
Replies: 163
Views: 32,964
Posted By DHeal
I guess I might be a bit concerned about...

I guess I might be a bit concerned about potential galvanic reaction with the mix of aluminum /steel / stainless but I can't say for sure. I used a piece of thin but stiff plastic sheet bent over...
Forum: RV-12 04-04-2018, 09:07 AM
Replies: 12
Views: 1,620
Posted By DHeal
- Follow Van's suggested procedure per plans. - ...

- Follow Van's suggested procedure per plans.
- Don't think that more resin is better. Less is more as long as the glass is fully saturated and the excess resin is squeezed out.
- Strive for a...
Forum: RV-12 04-02-2018, 06:21 PM
Replies: 16
Views: 2,889
Posted By DHeal
OK, here's my take on it: One of the functions...

OK, here's my take on it: One of the functions of the carb springs is to maintain a consistent tension on the two throttle cables -- this serves to reduce any free-play or slack in the two cables...
Forum: RV General Discussion/News 03-27-2018, 09:44 PM
Replies: 16
Views: 1,592
Posted By DHeal
Check with your home insurer; typically they do...

Check with your home insurer; typically they do not cover aircraft under construction in a house. And what Kyle said.
Forum: RV General Discussion/News 03-27-2018, 04:41 PM
Replies: 8
Views: 985
Posted By DHeal
Van's might have some -- they are used in Van's...

Van's might have some -- they are used in Van's RV-12 tow bars.
Forum: RV-12 03-27-2018, 02:10 PM
Replies: 28
Views: 4,373
Posted By DHeal
In addition to the RotaxOwner videos, there are a...

In addition to the RotaxOwner videos, there are a couple of videos on YouTube that depict the servicing of Bing carbs -- not necessarily by the book but they do have some good visuals of the carb's...
Forum: RV-12 03-22-2018, 05:54 PM
Replies: 28
Views: 4,373
Posted By DHeal
I've had many overweight floats in my RV-12. In...

I've had many overweight floats in my RV-12. In my experience, overweight floats do not create much of an issue at high-power settings -- the engine runs fine. The high fuel flow at high-power...
Forum: RV-12 03-22-2018, 05:22 PM
Replies: 28
Views: 4,373
Posted By DHeal
Sure sounds like a bit of debris in one of the...

Sure sounds like a bit of debris in one of the fuel bowls temporarily blocked a jet. Right after the event, did you pull off the two fuel bowls and look for debris? Since the engine is now running...
Forum: RV General Discussion/News 03-21-2018, 09:18 AM
Replies: 11
Views: 1,654
Posted By DHeal
Larry -- If you are interested in the "pop-rivet"...

Larry -- If you are interested in the "pop-rivet" AOA sensing port used in the RV-12 I suggest that you SEARCH the VAF / RV-12 website -- there is a lot of discussion as to its location, plumbing,...
Forum: RV General Discussion/News 03-20-2018, 03:58 PM
Replies: 11
Views: 1,654
Posted By DHeal
On the RV-12, we just drill a strategically...

On the RV-12, we just drill a strategically located hole under the leading edge of the wing, put a pop-rivet in the hole, and plumb an AOA air line to the ADHRS.
Forum: RV-14 03-19-2018, 08:56 PM
Replies: 23
Views: 3,596
Posted By DHeal
On my plexiglas and lexan canopies, I generally...

On my plexiglas and lexan canopies, I generally use a small UniBit for the majority of the holes. Sometimes it results in a hole that is ever so slightly larger than the plans-specified hole -- but...
Forum: RV-12 03-19-2018, 09:01 AM
Replies: 2
Views: 699
Posted By DHeal
Gotta move fast or you'll end up with a...

Gotta move fast or you'll end up with a swept-wing RV-12! 😉
Forum: RV-12 03-13-2018, 05:33 PM
Replies: 163
Views: 32,964
Posted By DHeal
Just completed my Stab SB and offer a few...

Just completed my Stab SB and offer a few observations on the stab reinstall:

1. Van's suggestion to instant-glue the original configuration washers to the new brackets worked great -- be sure to...
Forum: RV-14 03-12-2018, 09:21 AM
Replies: 16
Views: 2,131
Posted By DHeal
I used @ 1/8" thick orange silicone baffling...

I used @ 1/8" thick orange silicone baffling sheet cut into very small squares with an appropriately sized rivet hole punched in the middle -- worked great in compressing the aluminum parts together...
Forum: RV-12 03-09-2018, 08:44 AM
Replies: 37
Views: 13,210
Posted By DHeal
Another thought: Be sure that whichever sealant...

Another thought: Be sure that whichever sealant you use for your fuel line fittings, that it is compatible with the ethanol in your fuel (if you use ethanol-poisoned auto gas). As I noted earlier,...
Forum: RV-12 03-08-2018, 08:16 PM
Replies: 37
Views: 13,210
Posted By DHeal
MATCO recommends Loctite 567 for their brake...

MATCO recommends Loctite 567 for their brake fittings. I have had very good success with 567 on all of my RV-12's threaded (oil, gas, brake, etc.) NPT fittings. My local hydraulics supplier had it...
Forum: RV-12 02-17-2018, 05:05 PM
Replies: 12
Views: 1,986
Posted By DHeal
Data point: I installed the pitot bushing in...

Data point: I installed the pitot bushing in 5/2013 using "blue Loctite" per Van's plans. Four years and 600 flight hours later the bushing is doing very well with no sign of loosening.
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