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Search: Posts Made By: Tacco
Forum: RV-12/RV-12iS 10-03-2019, 02:33 PM
Replies: 22
Views: 4,676
Posted By Tacco
I use this. Itís...

I use this. Itís perfect.

https://www.amazon.com/Titanium-Keychain-Bottle-Opener-Stainless/dp/B0797RPNJ5
Forum: RV-12/RV-12iS 09-16-2019, 08:19 PM
Replies: 6
Views: 810
Posted By Tacco
I canít find any requirement in the PAP to raise...

I canít find any requirement in the PAP to raise the nose for fuel testing.
Forum: RV-12/RV-12iS 09-13-2019, 04:50 PM
Replies: 25
Views: 6,068
Posted By Tacco
Just looking for some insight here, but it seems...

Just looking for some insight here, but it seems to me adjusting any of the control system linkage only determines where the neutral position of the stick will be. And, if the push rods are adjusted,...
Forum: RV-12/RV-12iS 08-27-2019, 07:28 PM
Replies: 7
Views: 811
Posted By Tacco
What I meant by ďconstantĒ output of the...

What I meant by ďconstantĒ output of the electronic pump above is that itís not RPM related.
Forum: RV-12/RV-12iS 08-27-2019, 06:40 PM
Replies: 7
Views: 811
Posted By Tacco
I tend to agree. Today I did eight...

I tend to agree.

Today I did eight stop-and-goes and the fuel pressure never dropped below 2.6 at its lowest. Cool 60F day. The only difference between today and yesterday was that the stop-and-go...
Forum: RV-12/RV-12iS 08-26-2019, 03:30 PM
Replies: 7
Views: 811
Posted By Tacco
Jim, Haven't looked at my pressure without the...

Jim,

Haven't looked at my pressure without the electrical pump on.

This was a stop and go takeoff after about a 20 minute flight. Looking at the Dynon data, the pressure was normal on approach,...
Forum: RV-12/RV-12iS 08-26-2019, 01:25 PM
Replies: 7
Views: 811
Posted By Tacco
Higher Pressure Fuel Pump

I got my first "Low Fuel Pressure" warning today upon takeoff. Of course I'll be checking all suspects but so far it looks like what many others have experienced. How many have upgraded to the higher...
Forum: RV-12/RV-12iS 08-20-2019, 02:21 PM
Replies: 22
Views: 2,935
Posted By Tacco
Western Propeller, Troutdale (TTD).

Western Propeller, Troutdale (TTD).
Forum: RV-12/RV-12iS 08-19-2019, 11:03 AM
Replies: 22
Views: 2,935
Posted By Tacco
Scott, When placing the temporary weights on the...

Scott,

When placing the temporary weights on the outside of the spinner, what moment arm, specific distance, do you use?
Forum: RV-12/RV-12iS 08-18-2019, 09:37 AM
Replies: 22
Views: 2,935
Posted By Tacco
Randy, Iíd check with Vanís to make sure there...

Randy, Iíd check with Vanís to make sure there are no structural issues, donít think there would be. Also, Iíd deburr and chamfer the holes thoroughly to avoid cracking.
Forum: RV-12/RV-12iS 08-17-2019, 10:54 AM
Replies: 22
Views: 2,935
Posted By Tacco
If I could do it over again, I would have...

If I could do it over again, I would have pre-drilled eight to ten holes in the bulkhead before assembly and prop installation. That way I could have precisely measured their location. I could have...
Forum: RV-12/RV-12iS 08-12-2019, 08:02 PM
Replies: 6
Views: 946
Posted By Tacco
Pretty much determined I need to dynamically...

Pretty much determined I need to dynamically balance the prop. Anyone know where to rent a Dynavibe?
Forum: RV-12/RV-12iS 08-12-2019, 12:55 PM
Replies: 6
Views: 946
Posted By Tacco
Yes, very odd. What makes it really odd is that...

Yes, very odd. What makes it really odd is that there was no stick vibration. I donít think it was a control surface problem or a issue with the brackets and pushrods. And yes I complied with the SB....
Forum: RV-12/RV-12iS 08-12-2019, 10:10 AM
Replies: 6
Views: 946
Posted By Tacco
Vibrating Flap Handle

Today on approach my flap handle began vibrating noticeably. 60kts and full flaps. No vibration through the stick at all. Went away on final. When I say noticeable it was vibrating against my leg...
Forum: RV-12/RV-12iS 08-12-2019, 10:02 AM
Replies: 24
Views: 7,567
Posted By Tacco
An update. Provided everything else is straight...

An update. Provided everything else is straight and you fly solo a lot with partial fuel, increasing the tire pressure in the left tire makes a big difference.
Forum: RV-12/RV-12iS 08-04-2019, 07:02 PM
Replies: 11
Views: 2,958
Posted By Tacco
Read AC 61-67C. The RV-12 is certified as a...

Read AC 61-67C. The RV-12 is certified as a Special Category, Light Sport Aircraft. Iím pretty sure Vanís spin tested the design but did not characterized performance beyond a few turns. Therefore,...
Forum: RV-12/RV-12iS 08-04-2019, 06:01 PM
Replies: 8
Views: 1,545
Posted By Tacco
Thanks Scott. The tee was horizontal. I twisted...

Thanks Scott. The tee was horizontal. I twisted it vertical and put a dab of RTV on the plastic tube so to fix it to the the aluminum skin above the tee.

For the initial occurrence, hereís what I...
Forum: RV-12/RV-12iS 08-02-2019, 09:38 AM
Replies: 8
Views: 1,545
Posted By Tacco
Yes I do and yes it is. Just never thought Iíd...

Yes I do and yes it is. Just never thought Iíd smell it in the cockpit when it vents outside!
Forum: RV-12/RV-12iS 08-01-2019, 07:59 PM
Replies: 8
Views: 1,545
Posted By Tacco
Fuel Smell in Cockpit

Itís happened twice. Once during the PAP while conducting the ďtime to climbĒ performance test, and once during the first flight I had a totally full fuel tank. I had read all the posts on probable...
Forum: RV-12/RV-12iS 07-28-2019, 05:01 PM
Replies: 15
Views: 3,155
Posted By Tacco
Further confusion...my engine serial number is...

Further confusion...my engine serial number is within the effected range but my carbs are not. But it says: ďif you meet one of the criteria ď
Forum: RV-12/RV-12iS 07-28-2019, 01:04 PM
Replies: 15
Views: 3,155
Posted By Tacco
ROTAX Mandatory SB 912-073-UL

While ya'all were having good time at Oshkosh...this... Rotax SB 912-073-UL.

https://legacy.rotaxowner.com/si_tb_info/serviceb/sb-912-073-ul.pdf

Haven't studied it too closely yet but if its the...
Forum: RV-12/RV-12iS 07-23-2019, 09:50 PM
Replies: 0
Views: 503
Posted By Tacco
Exhaust Pipe Spring and Radiator Hose Interference

Trying this again.

I had shielded the radiator hose with a piece of aluminum and cork. About 1/8 of an inch thick. In the picture note that the spring is rubbing a spot on the aluminum. My...
Forum: RV-12/RV-12iS 06-12-2019, 11:55 AM
Replies: 4
Views: 1,565
Posted By Tacco
Don, I tried the Viking part to save time and,...

Don,

I tried the Viking part to save time and, although I got it to fit pretty good, it looked horrible compared to the KAI approach on other RV-12's I checked out. I removed it and followed the...
Forum: RV-12/RV-12iS 05-15-2019, 07:46 PM
Replies: 8
Views: 1,570
Posted By Tacco
Thanks guys! It was indeed an out of balance nose...

Thanks guys! It was indeed an out of balance nose wheel.

This forum is an awesome thing! It has saved me valuable time, significant frustration, and certainly some bucks. Iím sending in a donation....
Forum: RV-12/RV-12iS 05-14-2019, 05:30 PM
Replies: 11
Views: 1,689
Posted By Tacco
Ok guys, hereís the deal. Bad level. It has an...

Ok guys, hereís the deal. Bad level. It has an orientation bias in it that canít be calibrated out. Itís ok to use if you change orientation but if youíre unaware, it can be confusing.

My canopy...
Forum: RV-12/RV-12iS 05-14-2019, 09:43 AM
Replies: 8
Views: 1,570
Posted By Tacco
I was doing the performance box from FT4 of the...

I was doing the performance box from FT4 of the PAP.
Forum: RV-12/RV-12iS 05-13-2019, 11:12 PM
Replies: 8
Views: 1,570
Posted By Tacco
Vibration Sources

I have a vibration Iím tracking down. While Iím investigating the usual suspects, thought I might ask your thoughts on this possibility. Might be dumb but thought Iíd ask.

I have about 15 hours on...
Forum: RV-12/RV-12iS 05-12-2019, 02:10 PM
Replies: 5
Views: 950
Posted By Tacco
Same here.

Same here.
Forum: RV-12/RV-12iS 05-12-2019, 02:08 PM
Replies: 11
Views: 1,689
Posted By Tacco
Joe had it right. The level is off. If I set it...

Joe had it right. The level is off. If I set it on the deck and zero it, then rotate it 180, it measures 4.4 degrees. Weird.

Lesson learned, important to maintain levelís orientation when taking the...
Forum: RV-12/RV-12iS 05-12-2019, 10:01 AM
Replies: 11
Views: 1,689
Posted By Tacco
Ok here is what I think is going on... My level...

Ok here is what I think is going on...

My level is a little too long to position exactly fore and aft due to rivet interference on the canopy deck. Therefore, I angle it slightly to fit aside the...
Forum: RV-12/RV-12iS 05-11-2019, 07:45 PM
Replies: 11
Views: 1,689
Posted By Tacco
Prop Pitch Setting and Zeroing to Canopy Deck

The KAI says to calibrate your level to the canopy deck then measure the prop pitch. I did this and got it set to 71.4 as recommended.

Today after a test flight I was chasing down a slight...
Forum: RV-12/RV-12iS 05-10-2019, 09:37 PM
Replies: 2
Views: 727
Posted By Tacco
Quite right. Sorry for the confusion. I should...

Quite right. Sorry for the confusion. I should have included that my test flights have all been at 1050 lbs plus or minus 20 lbs. so the 1G stall speeds should be pretty close.
Forum: RV-12/RV-12iS 05-10-2019, 09:02 PM
Replies: 2
Views: 727
Posted By Tacco
Stall Warning Vane Issue

My initial stall testing looked good with respect to stall warning adjustments - none required. It made contact about 7 knots before the break consistently. I set my AoA system to began warning tones...
Forum: RV-12/RV-12iS 05-10-2019, 08:41 PM
Replies: 17
Views: 2,439
Posted By Tacco
Got it, thanks. I noticed the AoA setting was in...

Got it, thanks. I noticed the AoA setting was in % and did not read the the fine print below that defined % in terms of the bar color range.
Forum: RV-12/RV-12iS 05-04-2019, 12:22 PM
Replies: 14
Views: 2,047
Posted By Tacco
Just to follow up: my setting seemed to settle...

Just to follow up: my setting seemed to settle out about 110000.
Forum: RV-12/RV-12iS 05-03-2019, 08:01 PM
Replies: 17
Views: 2,439
Posted By Tacco
Dynon AoA Settings

How do I set the AoA tone to come on at the bottom of the yellow bars?
Forum: RV-12/RV-12iS 04-19-2019, 09:26 PM
Replies: 13
Views: 2,642
Posted By Tacco
Thought I might follow-up. The VR was indeed bad....

Thought I might follow-up. The VR was indeed bad. Measured voltage from generator with engine running - looked fine. Measured output from VR with engine running - definitely not good. Unstable. Would...
Forum: RV-12/RV-12iS 04-02-2019, 12:48 PM
Replies: 14
Views: 2,047
Posted By Tacco
Thanks guys. Iím going to set the K-Factor at...

Thanks guys. Iím going to set the K-Factor at 110000 for my next flight (a couple days from now) and let you know.
Forum: RV-12/RV-12iS 04-01-2019, 12:00 PM
Replies: 14
Views: 2,047
Posted By Tacco
Thanks for the pictures Dan. Iím wondering if...

Thanks for the pictures Dan. Iím wondering if there might be contamination swirling around in there.
Forum: RV-12/RV-12iS 04-01-2019, 07:24 AM
Replies: 14
Views: 2,047
Posted By Tacco
RV-12 ULS, Skyview HDX

RV-12 ULS, Skyview HDX
Forum: RV-12/RV-12iS 03-31-2019, 10:46 PM
Replies: 14
Views: 2,047
Posted By Tacco
My fuel pressure runs about 3 PSI before engine...

My fuel pressure runs about 3 PSI before engine start. 4 to 5 after.

I use the same formula as Mark above.

Its been cold here and my fuel is no more than three weeks or less out of the pump....
Forum: RV-12/RV-12iS 03-31-2019, 07:22 PM
Replies: 14
Views: 2,047
Posted By Tacco
Fuel Flow Calibration Help

Lots posted on this already but I can't seem to figure this out.

I'm still in Phase 1 testing so no long cross country's yet so most of my flights have been short.

My indicated fuel remaining...
Forum: RV-12/RV-12iS 03-21-2019, 12:10 PM
Replies: 13
Views: 2,642
Posted By Tacco
Innovative! ...and very cool. Pun intended!

Innovative! ...and very cool. Pun intended!
Forum: RV-12/RV-12iS 03-20-2019, 12:51 PM
Replies: 13
Views: 2,642
Posted By Tacco
My VR is mounted in the cockpit. I agree that...

My VR is mounted in the cockpit. I agree that temperature eventually does these things in. However I think mine is clearly a QA issue, probably helped along by poor design. The first flight was...
Forum: RV-12/RV-12iS 03-20-2019, 10:16 AM
Replies: 13
Views: 2,642
Posted By Tacco
So far, i’ve... 1) Checked the Stator coils. ...

So far, i’ve...

1) Checked the Stator coils. Measured about half an ohm resistance between the two heavy yellow wires at the regulator.

2). With the Master ON ( Mag A & B OFF), measured battery...
Forum: RV-12/RV-12iS 03-19-2019, 05:47 PM
Replies: 13
Views: 2,642
Posted By Tacco
Voltage at C looks good. How did you diagnose...

Voltage at C looks good.

How did you diagnose the master switch issue?
Forum: RV-12/RV-12iS 03-19-2019, 04:36 PM
Replies: 13
Views: 2,642
Posted By Tacco
VR Infant Mortality ?

I have a total of 6 (six) hours on my 12 ULS. This morning the system was not charging upon start up or during run-up.

Could the VR have failed this early? I suspect a connection has vibrated loose...
Forum: RV-12/RV-12iS 03-17-2019, 10:14 AM
Replies: 8
Views: 1,011
Posted By Tacco
As a former hot rod builder, Iíve seen enough...

As a former hot rod builder, Iíve seen enough embrittled and cracked exhaust pipes from wrapping that Iíd be reluctant to even use the approach on an airplane.

My issue / concern was not heat. It...
Forum: RV-12/RV-12iS 03-15-2019, 12:46 PM
Replies: 8
Views: 1,011
Posted By Tacco
Wish I could figure out this photo thing! Worth a...

Wish I could figure out this photo thing! Worth a thousand words.

Itís the lower radiator hose where it loops back to the aft engine connection. The spring is the aft-most spring on the right side.
Forum: RV-12/RV-12iS 03-14-2019, 10:14 PM
Replies: 6
Views: 1,265
Posted By Tacco
You won't regret it. In fact, as you progress,...

You won't regret it. In fact, as you progress, you'll become more convinced those others aren't even in the same class. And then you'll fly it...and realize it wasn't even a contest.
Forum: RV-12/RV-12iS 03-14-2019, 10:06 PM
Replies: 8
Views: 1,011
Posted By Tacco
Radiator Hose / Exhaust Spring Interference

How is your lower radiator hose to exhaust spring clearance on the right side? Mine is too close for comfort. Temporary added a "shield" consisting of a cork and aluminum. After a few hours of flight...
Forum: RV General Discussion/News 01-03-2019, 11:52 AM
Replies: 2
Views: 919
Posted By Tacco
First Flight RV-12 N12SM

...On New Years Day. After 18 months of build time. Flew great! No surprises. Rudder trim needs adjusted. No heavy wing. Finished half of PAP FT-1. Still grinning....
Forum: RV-12/RV-12iS 01-03-2019, 10:50 AM
Replies: 7
Views: 1,164
Posted By Tacco
First flight complete. I set the trim speed as...

First flight complete. I set the trim speed as Scott suggested above. Felt good slow and fast air speeds.
Forum: RV-12/RV-12iS 12-28-2018, 10:28 AM
Replies: 7
Views: 1,164
Posted By Tacco
Scott, do you have any recommendations for speed...

Scott, do you have any recommendations for speed settings to use?
Forum: RV-12/RV-12iS 12-27-2018, 09:25 PM
Replies: 16
Views: 2,743
Posted By Tacco
Aft window - One of the last things you want to...

Aft window - One of the last things you want to do. The stresses that would put on the window aside, you’ll have a million reasons to reach back there to do stuff even if you delayed attaching the...
Forum: RV-12/RV-12iS 12-27-2018, 09:16 PM
Replies: 7
Views: 1,164
Posted By Tacco
Dynon AP Trim Speed

With the Dynon AP Control Panel installed, my trim tab speed is about twice as fast as ďnormalĒ. 15 seconds versus 25-30 seconds stop to stop. I understand the reasons for this. My question is does...
Forum: RV-12/RV-12iS 12-20-2018, 05:52 PM
Replies: 24
Views: 7,567
Posted By Tacco
Never thought to check geometry of nose gear....

Never thought to check geometry of nose gear.

In any event, taxied from the right seat today and sure enough, pulled slightly right. Itís about the same when I sit on the left side and it pulls...
Forum: RV-12/RV-12iS 12-16-2018, 01:55 PM
Replies: 24
Views: 7,567
Posted By Tacco
David's right. The reason given is that the Matco...

David's right. The reason given is that the Matco bearing grease seals are not supposed to rotate with the wheel. This generates a small amount of rotational drag hence the torque required to turn...
Forum: RV-12/RV-12iS 12-15-2018, 02:30 PM
Replies: 24
Views: 7,567
Posted By Tacco
Same left pulling problem here. Put in .5 degree...

Same left pulling problem here. Put in .5 degree shim to correct a left toe-out condition, alignment is now dead nuts on. Tire pressures are identical. Even measured break away torque of wheels - 8...
Forum: RV-12/RV-12iS 11-15-2018, 09:10 PM
Replies: 6
Views: 855
Posted By Tacco
No one told me to comply with the AD. I think my...

No one told me to comply with the AD. I think my point was that without Van's and Rotax supporting their products, I would have never known there was a safety issue affecting my aircraft documented...
Forum: RV-12/RV-12iS 11-15-2018, 06:51 PM
Replies: 6
Views: 855
Posted By Tacco
Öfor their non-certified engines. Fortunately,...

Öfor their non-certified engines.

Fortunately, Vanís is looking out for us and covered this in their SB 17-10-14. And if youíre registered with ROTAX, you get their bulletins as well. And for my...
Forum: RV-12/RV-12iS 11-15-2018, 06:50 PM
Replies: 6
Views: 855
Posted By Tacco
ELSA's, Airworthiness Directives, and Form 8130-6

I learned something today...ok, its a low bar.

While working with my DAR (Gary Brown) filling out the 8130-6 correctly, he had me insert the number of the biweekly series of the AD Supplement (found...
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