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Search: Posts Made By: Tacco
Forum: RV-12/RV-12iS 05-04-2021, 10:16 PM
Replies: 10
Views: 921
Posted By Tacco
Check the log book against the service bulletins...

Check the log book against the service bulletins on the Vanís website. Yes, you can give instruction in an SLSA.
Forum: RV-12/RV-12iS 04-25-2021, 11:29 AM
Replies: 37
Views: 3,640
Posted By Tacco
I believe the old version (slightly less pressure...

I believe the old version (slightly less pressure capability) and the newest recommendation are both Facet pumps. And yes, equally annoying.
Forum: RV-12/RV-12iS 04-24-2021, 03:04 PM
Replies: 37
Views: 3,640
Posted By Tacco
The only time I turn it off (by pulling the fuse)...

The only time I turn it off (by pulling the fuse) is when I'm playing with the Dynon on the ground.

Would anyone even think about turning it off if it weren't so freaking noisy?
Forum: RV-12/RV-12iS 04-24-2021, 12:21 PM
Replies: 144
Views: 7,474
Posted By Tacco
Not to hijack the vapor lock discussion, but this...

Not to hijack the vapor lock discussion, but this accident is relevant. Vapor lock or not, I was struck by the PICís decision to turn back given his altitude and the proximity of a road virtually...
Forum: RV-12/RV-12iS 04-13-2021, 01:19 PM
Replies: 14
Views: 3,282
Posted By Tacco
An update. 10 hours on the new exhaust system....

An update. 10 hours on the new exhaust system. Thought I might have some slip joint blow-by (see pic) but upon detailed inspection it was just the cowling hinge working a bit. The slip joints and...
Forum: RV-12/RV-12iS 03-30-2021, 02:46 PM
Replies: 12
Views: 1,265
Posted By Tacco
Carb Balance Video - Reasonably Balanced?

Carb balancing experts, please take a look at this video. 2000 to 4000 RPM. Note right side lags but eventually settles out. Cable induced hysteresis? Are these carbs reasonably balanced?...
Forum: RV-12/RV-12iS 03-28-2021, 10:27 AM
Replies: 11
Views: 3,083
Posted By Tacco
Any updates?

Any updates?
Forum: RV-12/RV-12iS 03-18-2021, 09:14 PM
Replies: 34
Views: 3,395
Posted By Tacco
While investigating a vibration after installing...

While investigating a vibration after installing the new nose gear. I took this video to watch my nose wheel rotation. Note the main wheels stop at about the same time. I pretty sure this is because...
Forum: RV-12/RV-12iS 03-14-2021, 10:21 PM
Replies: 12
Views: 1,522
Posted By Tacco
Flying RV-12 to Oshkosh

Anyone ever flown an RV-12 to Oshkosh from the Northwest? Not that Iím going to do it, my butt is not durable enough. Iím learning ForeFlight flight planning and was wondering what route over the...
Forum: RV-12/RV-12iS 03-01-2021, 06:20 PM
Replies: 10
Views: 1,442
Posted By Tacco
When you try it, Hold the stick lightly with two...

When you try it, Hold the stick lightly with two fingers and deploy the flaps. My guess is that the aircraft wonít roll.
Forum: RV-12/RV-12iS 02-24-2021, 01:54 PM
Replies: 10
Views: 1,442
Posted By Tacco
Lets be clear what you mean by "stick pressure"....

Lets be clear what you mean by "stick pressure". Do you mean you have to apply stick pressure to keep the aircraft level after the flaps are extended?

It may not be related, but you should be aware...
Forum: RV-12/RV-12iS 02-10-2021, 03:48 PM
Replies: 6
Views: 1,771
Posted By Tacco
Just went through this, although my ďleakĒ was...

Just went through this, although my ďleakĒ was much smaller than yours. First, there is no penetration of the exhaust stud hole into the crank case or oil channels. I convinced myself it was left...
Forum: RV-12/RV-12iS 02-02-2021, 01:57 PM
Replies: 23
Views: 2,786
Posted By Tacco
Got it. Agree. My concern was that people would...

Got it. Agree. My concern was that people would re-drill the torque tubes thinking that was the root cause of the issue. What they really need to do is to make absolutely certain of the length of the...
Forum: RV-12/RV-12iS 02-01-2021, 03:23 PM
Replies: 23
Views: 2,786
Posted By Tacco
Scott, I believe you are partly correct. It has...

Scott, I believe you are partly correct. It has to do with pushrod length but not torque tube drilling. The drilling process only determines the position of control surface (although they may not...
Forum: RV-12/RV-12iS 01-31-2021, 10:44 AM
Replies: 23
Views: 2,786
Posted By Tacco
Not having the wings on or the elevator cables...

Not having the wings on or the elevator cables tension should not make a difference in my opinion. I too have the upgraded pump. Once again, The length of the push rods, including the flap handle...
Forum: RV-12/RV-12iS 01-30-2021, 10:50 PM
Replies: 23
Views: 2,786
Posted By Tacco
It is a close fit. There are a couple of things...

It is a close fit. There are a couple of things to check. When I had this problem, I found my flap handle to control mixer connecting rod was not the right length. Also check the main flaperon tubes...
Forum: RV-12/RV-12iS 01-29-2021, 04:37 PM
Replies: 9
Views: 1,211
Posted By Tacco
Thanks guys. So Iím not crazy! Think Iíll live...

Thanks guys. So Iím not crazy! Think Iíll live with it for now. Might fiddle with at next annual.
Forum: RV-12/RV-12iS 01-28-2021, 12:44 PM
Replies: 9
Views: 1,211
Posted By Tacco
Control System Slack

During my annual, I noticed there is some slight play in the control sticks when moved fore and aft. When I hold one stick and move the other side to side, there is zero play, which is what you would...
Forum: RV-12/RV-12iS 01-20-2021, 11:19 AM
Replies: 14
Views: 3,282
Posted By Tacco
Thank you guys! Great customer service.

Thank you guys! Great customer service.
Forum: RV-12/RV-12iS 01-15-2021, 11:17 AM
Replies: 14
Views: 3,282
Posted By Tacco
Pay no attention to how they are marked. Compare...

Pay no attention to how they are marked. Compare the shape of the two aft tubes to the plans. Then, compare the position of the probe holes to the drawing.
Forum: RV-12/RV-12iS 01-10-2021, 09:10 PM
Replies: 14
Views: 3,282
Posted By Tacco
For those of you temped to order this system -...

For those of you temped to order this system - don't, at least not just yet. Those of you that have, and have received them, chances are likely that the EGT probe holes in the aft tubes are...
Forum: RV-12/RV-12iS 01-08-2021, 08:21 PM
Replies: 14
Views: 3,282
Posted By Tacco
I got my answer from Vans today. The EGT probe...

I got my answer from Vans today. The EGT probe holes in mine were mis-drilled. You might want to check yours. The fix is easy but I had to ship my tubes back.
Forum: RV-12/RV-12iS 01-07-2021, 01:02 PM
Replies: 14
Views: 3,282
Posted By Tacco
EX - 00044 New Exhaust System for 12 ULS

Any body else out there order this kit? I need you to check something for me.
Forum: RV-12/RV-12iS 12-23-2020, 04:47 PM
Replies: 48
Views: 16,929
Posted By Tacco
Thanks Greg. If I purchase EX-00044 for the 12,...

Thanks Greg.

If I purchase EX-00044 for the 12, can I assume I am not effected by SB-00013 for the 12i...given the system is based on the 12i's system?

Second, I just checked the new KIA changes...
Forum: RV-12/RV-12iS 12-16-2020, 06:14 PM
Replies: 10
Views: 2,187
Posted By Tacco
Thanks guys. Iím thinking it is indeed common and...

Thanks guys. Iím thinking it is indeed common and do to the front cylinders running cooler at idle & taxi rpms.
Forum: RV-12/RV-12iS 12-15-2020, 10:19 PM
Replies: 10
Views: 2,187
Posted By Tacco
Ahhhh...except that the cylinders running richer,...

Ahhhh...except that the cylinders running richer, are the ones further from the carb. Cylinders 1&2 have a longer intake run than 3&4 which are clearly the lean ones.
Forum: RV-12/RV-12iS 12-15-2020, 07:35 PM
Replies: 10
Views: 2,187
Posted By Tacco
Sure, that’s what I thought as well. But how is...

Sure, that’s what I thought as well. But how is that possible if they are fed by different carbs and they each share the carb feeding one of the rear cylinders? I.e. 2 & 4 are on the same carb, and...
Forum: RV-12/RV-12iS 12-15-2020, 07:19 PM
Replies: 10
Views: 2,187
Posted By Tacco
Spark Plug Diagnosis

In the middle of my annual. Take a look at my plugs. I chock it up to the front cylinders running much cooler than the back. Any other explanations out there?
Forum: RV-12/RV-12iS 12-12-2020, 01:41 PM
Replies: 2
Views: 1,131
Posted By Tacco
Checking Prop Bolt Torque at Annual

Do you remove blades to check mounting bolt torque during the annual inspection?
Forum: RV-12/RV-12iS 12-11-2020, 08:16 PM
Replies: 48
Views: 16,929
Posted By Tacco
It appears EX-00044, the new RV-12 exhaust system...

It appears EX-00044, the new RV-12 exhaust system based on the 12i system is now available from Vans. $1800. Anyone going to give it a try?
Forum: RV Ongoing Maintenance Issues 12-06-2020, 05:30 PM
Replies: 19
Views: 3,107
Posted By Tacco
Frankly, I mostly do it by feel. But your right,...

Frankly, I mostly do it by feel. But your right, I usually see a couple of turns in aluminum, quarter turn in steel.
Forum: RV Ongoing Maintenance Issues 12-06-2020, 11:30 AM
Replies: 19
Views: 3,107
Posted By Tacco
Thanks guys. I used a combination of the...

Thanks guys. I used a combination of the suggestions above and managed to get it out. Then, promptly went to drill and tap the other side ....AND DID THE SAME THING! 😫 This time it broke flush! By...
Forum: RV-12/RV-12iS 12-06-2020, 09:06 AM
Replies: 5
Views: 886
Posted By Tacco
Thanks! The new IPB has removed all the torque...

Thanks! The new IPB has removed all the torque values.
Forum: RV-12/RV-12iS 12-05-2020, 07:08 PM
Replies: 5
Views: 886
Posted By Tacco
I must be going blind. Not seeing it in the IPB...

I must be going blind. Not seeing it in the IPB (or any torque values for that matter), or the Line or Heavy Maintenance manuals.
Forum: RV-12/RV-12iS 12-05-2020, 04:19 PM
Replies: 5
Views: 886
Posted By Tacco
Throttle shaft nut torque?

Anyone? Canít find it.
Forum: RV Ongoing Maintenance Issues 12-03-2020, 07:00 PM
Replies: 19
Views: 3,107
Posted By Tacco
Yes, itís part of the plans. It is not the...

Yes, itís part of the plans. It is not the ďspringĒ portion of the gear leg.
Forum: RV Ongoing Maintenance Issues 12-02-2020, 04:29 PM
Replies: 19
Views: 3,107
Posted By Tacco
Broken Tap, any suggestions?

Itís the nose gear fairing attachment hole(s).
Forum: RV-12/RV-12iS 11-30-2020, 08:28 PM
Replies: 7
Views: 1,071
Posted By Tacco
Let me ask that differently. How often are folks...

Let me ask that differently. How often are folks having to balance their carbs due to perceived roughness?
Forum: RV-12/RV-12iS 11-30-2020, 09:48 AM
Replies: 7
Views: 1,071
Posted By Tacco
Frequency of carb balance

Out side of the annual inspection, how often should the carbs need balanced?
Forum: RV-12/RV-12iS 11-27-2020, 01:11 PM
Replies: 48
Views: 16,929
Posted By Tacco
Any word / rumors on when the new system will be...

Any word / rumors on when the new system will be available? My A/C is going down for its annual next week. I would put the new system in if it were available.
Forum: RV-12/RV-12iS 10-08-2020, 10:52 AM
Replies: 18
Views: 4,359
Posted By Tacco
Concur with putting in full flaps abeam the...

Concur with putting in full flaps abeam the numbers. Two step procedure just seems bothersome and ineffectual. Abeam the numbers, or landing point, I go to idle, trim to 60, full flaps. Solo, I slow...
Forum: Safety 09-24-2020, 04:07 PM
Replies: 51
Views: 7,956
Posted By Tacco
No, I don’t understand. Best glide speed for our...

No, I don’t understand. Best glide speed for our aircraft is well above stall. In this maneuver, the objective is to get back to the runway. Running out the flaps will always work against you in this...
Forum: Safety 09-24-2020, 10:06 AM
Replies: 51
Views: 7,956
Posted By Tacco
I should have mentioned that the EAA is...

I should have mentioned that the EAA is collecting data on the turn back performance of different aircraft. The project is in support of the development of a preflight tool that you could use for...
Forum: Safety 09-23-2020, 10:24 PM
Replies: 51
Views: 7,956
Posted By Tacco
For the link, go to the EAA web site, Videos and...

For the link, go to the EAA web site, Videos and then Webenars, it is recorded there.

As for other comments above, I can tell some REALLY need to watch it. Yes, it something you need to practice...
Forum: Safety 09-23-2020, 06:59 PM
Replies: 51
Views: 7,956
Posted By Tacco
So You Think You Can Make That 180 Back After Takeoff

Just watched the EAA Webenar on this subject. Do yourself a favor - watch it.
Forum: RV-12/RV-12iS 08-04-2020, 03:10 PM
Replies: 6
Views: 1,256
Posted By Tacco
Ah, my apologies. Just realized heís talking...

Ah, my apologies. Just realized heís talking KTAS. So....whipping out my handy E6-B ....135 KTAS would be about, just for example, 115 KCAS at 10,500 ft density altitude. But by the way, I think VNE...
Forum: RV-12/RV-12iS 08-04-2020, 02:53 PM
Replies: 6
Views: 1,256
Posted By Tacco
Seeing as how 136 KIAS is VNE...yeah, typo.

Seeing as how 136 KIAS is VNE...yeah, typo.
Forum: RV-12/RV-12iS 08-02-2020, 05:10 PM
Replies: 7
Views: 2,572
Posted By Tacco
Yep, it is.

Yep, it is.
Forum: RV-12/RV-12iS 08-02-2020, 09:47 AM
Replies: 7
Views: 2,572
Posted By Tacco
Fixed this problem with the help of Vanís...

Fixed this problem with the help of Vanís Engineering guys. Note how fuel line is behind radiator hose. This forces the radiator hose forward. Rerouted the fuel line forward of the radiator hose....
Forum: RV-12/RV-12iS 08-01-2020, 03:15 PM
Replies: 15
Views: 3,339
Posted By Tacco
Pretty sure I've figured this out. There was...

Pretty sure I've figured this out. There was indeed some residual assembly lube or anti seize that seeped out of the stud, or was always there. New engine remember. A minuscule exhaust leak at the...
Forum: RV-12/RV-12iS 07-29-2020, 12:52 PM
Replies: 20
Views: 4,604
Posted By Tacco
Ok, used this method and here are my...

Ok, used this method and here are my observations:

You have to wrestle the fuel lines out of the way to get to the ports which necessitates cutting off any zip ties you've secured them with. I also...
Forum: RV-12/RV-12iS 07-27-2020, 05:57 PM
Replies: 13
Views: 3,234
Posted By Tacco
You were right. Even though engine is very low...

You were right. Even though engine is very low time. Had a ďsunkĒ float. Actually, 7.2 grams on one side, 10.5 on the other. So...running excessively rich, fowling plugs. Old style floats, now...
Forum: RV-12/RV-12iS 07-27-2020, 05:47 PM
Replies: 13
Views: 3,234
Posted By Tacco
You were right. Even though engine is very low...

You were right. Even though engine is very low time. Had a ďsunkĒ float. Actually, 7.2 grams on one side, 10.5 on the other. So...running excessively rich, fowling plugs. Old style floats, now...
Forum: RV-12/RV-12iS 07-24-2020, 07:47 PM
Replies: 15
Views: 3,339
Posted By Tacco
All well and good, but weíre talking about the...

All well and good, but weíre talking about the exhaust flange studs here. This SI is not applicable.
Forum: RV-12/RV-12iS 07-21-2020, 10:19 PM
Replies: 7
Views: 2,572
Posted By Tacco
OK folks, here is more and what I did. The spring...

OK folks, here is more and what I did. The spring was rubbing on the exhaust tube as well as hitting the radiator shield. It was destined to fail. In addition, the exhaust ball joint was leaking,...
Forum: RV-12/RV-12iS 07-21-2020, 10:06 PM
Replies: 15
Views: 3,339
Posted By Tacco
The studs are in the head not the barrel. And it...

The studs are in the head not the barrel. And it is not from a leaky valve cover either. It is most definitely from the stud, which is totally illogical.
Forum: RV-12/RV-12iS 07-17-2020, 02:25 PM
Replies: 11
Views: 1,871
Posted By Tacco
I posted on this a few months back. Dynon says...

I posted on this a few months back. Dynon says they are going to fix it. If you double push the AP disconnect button, it clears.
Forum: RV-12/RV-12iS 07-17-2020, 12:22 PM
Replies: 15
Views: 3,339
Posted By Tacco
No, it's pretty obviously the stud. Hopefully it...

No, it's pretty obviously the stud. Hopefully it will go away as John said. It's supposed to be secured with Locktite 648, which is green and cures. I guess I'm surprised the stud goes all the way...
Forum: RV-12/RV-12iS 07-17-2020, 08:01 AM
Replies: 15
Views: 3,339
Posted By Tacco
Thanks John! Exactly my problem. Yes, new engine....

Thanks John! Exactly my problem. Yes, new engine. I suspected assembly lube but the stud is supposed to be inserted with locktite. Iíll keep an eye on it.
Forum: RV-12/RV-12iS 07-17-2020, 06:50 AM
Replies: 15
Views: 3,339
Posted By Tacco
Unlikely, it would have to be a crack in two...

Unlikely, it would have to be a crack in two heads. Weird thing is, how does oil get into a stud hole? Are they drilled all the way into an oil pathway?
Forum: RV-12/RV-12iS 07-16-2020, 08:46 PM
Replies: 15
Views: 3,339
Posted By Tacco
Oil Leaking from Lower Exhaust Stud

I have a very small amount if oil, a couple drops, leaking from the lower exhaust studs on two cylinders. Why?
Forum: RV-12/RV-12iS 07-15-2020, 10:17 PM
Replies: 7
Views: 2,572
Posted By Tacco
Exhaust Spring Clearance and Radiator Hose

I was really uncomfortable with the clearance of this exhaust spring and the lower radiator hose. So I put on a heat shield consisting of a cork and aluminum sheet. About 3/32 thick. This is how it...
Forum: RV-12/RV-12iS 07-06-2020, 09:34 AM
Replies: 20
Views: 4,604
Posted By Tacco
Thanks guys. I?m going to give a try.

Thanks guys. I?m going to give a try.
Forum: RV-12/RV-12iS 07-05-2020, 02:41 PM
Replies: 20
Views: 4,604
Posted By Tacco
912 ULS Carb Sync Using Option 3

Option 3 in the 912 manual uses the two screws on top of the intake manifold. Seems like it would be easier than removing the crossover tube every time. Anyone ever try this? Seems like completely...
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