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Search: Posts Made By: rvbuilder2002
Forum: RV-12/RV-12iS Today, 03:25 PM
Replies: 8
Views: 557
Posted By rvbuilder2002
All QB assemblies sold by Van's have individual...

All QB assemblies sold by Van's have individual parts protection primed before they are assembled, so there is a protective coating on contacting mating surfaces.
Forum: RV-7/7A Today, 12:54 PM
Replies: 9
Views: 203
Posted By rvbuilder2002
The plans spec recommends 26 lbs when pulling...

The plans spec recommends 26 lbs when pulling laterally at the axle nut.

If you are feeling ~20 lbs on the end of a tow bar the actual value could be way higher than what is recommended. The tow...
Forum: RV-12/RV-12iS Today, 12:48 PM
Replies: 8
Views: 557
Posted By rvbuilder2002
Just make sure it is scuffed real well. There...

Just make sure it is scuffed real well. There should be zero hint of reflection in the surface.
Clean until you no longer get any appreciable residue on the rag.
Keep the time to primer as short...
Forum: RV-12/RV-12iS Today, 11:11 AM
Replies: 8
Views: 557
Posted By rvbuilder2002
The process is pretty simple. It may be frowned...

The process is pretty simple. It may be frowned upon by some but I just consider it another choice. I know of a number of professional painters that use the same method.

It involves mechanically...
Forum: RV-14 Today, 09:03 AM
Replies: 84
Views: 12,419
Posted By rvbuilder2002
No, we are not using a purge valve. We have...

No, we are not using a purge valve.

We have noticed no change in hot start performance compared to the Precision / RSA style injection system that was installed previously.
Forum: RV-12/RV-12iS Today, 09:01 AM
Replies: 8
Views: 557
Posted By rvbuilder2002
Is this on a painted airplane? If so, what you...

Is this on a painted airplane?

If so, what you are likely seeing is filliform corrosion.
It is fairly commonly associated with skin edges and lap joints where moisture was trapped during the...
Forum: RV-14 Yesterday, 03:18 PM
Replies: 2
Views: 231
Posted By rvbuilder2002
There is a surprising amount of torsional...

There is a surprising amount of torsional flexibility on the rudder that only becomes a problem if it ever gets slammed against the stops by strong wind gusts.

The inertia of the counterweight on...
Forum: RV-12/RV-12iS Yesterday, 08:41 AM
Replies: 4
Views: 497
Posted By rvbuilder2002
Yes, my post was in the context of the initial...

Yes, my post was in the context of the initial certification process and the influence that the source of the engine will have on that.

The moment it has been certified as an E-LSA, an owner can do...
Forum: RV-12/RV-12iS 08-11-2020, 03:26 PM
Replies: 4
Views: 497
Posted By rvbuilder2002
Just in case you are not aware; if you choose to...

Just in case you are not aware; if you choose to purchase an engine from a different source other than Van's, you will have to certify your RV-12 as an experimental amateur built.
Forum: RV-14 08-10-2020, 03:27 PM
Replies: 25
Views: 2,120
Posted By rvbuilder2002
Maybe but not necessarily...... Even the...

Maybe but not necessarily......

Even the standard vans wing tips have enough flexibility that they can be installed with the trailing edge not aligned with the T.E. of the aileron.
That is why the...
Forum: RV-14 08-10-2020, 01:07 PM
Replies: 12
Views: 630
Posted By rvbuilder2002
Just make sure it stays far away from other parts...

Just make sure it stays far away from other parts and the engine.
Stainless threaded rod with the addition of vibration would just about be the equivalent of a hack saw blade.
Forum: RV-12/RV-12iS 08-10-2020, 12:56 PM
Replies: 15
Views: 1,194
Posted By rvbuilder2002
Does this mean you had DEXcool coolant...

Does this mean you had DEXcool coolant installed?

If so, you will definitely see a reduction in temps.
Forum: RV-12/RV-12iS 08-10-2020, 12:55 PM
Replies: 15
Views: 1,194
Posted By rvbuilder2002
Larry, The trimming on your cowl inlet looks...

Larry, The trimming on your cowl inlet looks good, so that is not a cause.

The next thing I would suggest investigating is your prop pitch.

On initial climb at low altitude immediately after...
Forum: RV-9/9A 08-09-2020, 05:51 PM
Replies: 18
Views: 1,966
Posted By rvbuilder2002
Giving a speed in comparison to an engine RPM...

Giving a speed in comparison to an engine RPM doesn't provide enough information to analyze whether you have a problem.

Look at it this way.....
If you were evaluate a manual transmission car by...
Forum: RV General Discussion/News 08-09-2020, 05:36 PM
Replies: 33
Views: 1,823
Posted By rvbuilder2002
My mistake..... I guess I read right past that. ...

My mistake..... I guess I read right past that. Which is why my post said "if" it can be bought with a valid C of A.
Forum: RV General Discussion/News 08-09-2020, 05:14 PM
Replies: 33
Views: 1,823
Posted By rvbuilder2002
Exactly In his first post (the one I originally...

Exactly

In his first post (the one I originally responded to) the OP made no mention of whether the airplane still had a valid C of A, so my response was largely in the context of the issues related...
Forum: RV General Discussion/News 08-08-2020, 11:08 PM
Replies: 33
Views: 1,823
Posted By rvbuilder2002
The only certification requirement for anything...

The only certification requirement for anything ever done to an experimental aircraft is for the required yearly condition inspection.

If this repair work could be completed before the next...
Forum: RV General Discussion/News 08-08-2020, 08:16 PM
Replies: 84
Views: 5,616
Posted By rvbuilder2002
I would agree with you if there was a gear...

I would agree with you if there was a gear retract switch on the panel (though I guess it is good to use standardized procedures across all models of aircraft flown).

Raising the flaps on the RV-6,...
Forum: RV-14 08-08-2020, 08:07 PM
Replies: 2
Views: 272
Posted By rvbuilder2002
If you want the nose wheel fairing to be aligned...

If you want the nose wheel fairing to be aligned for lowest drag it is.

The airplane doesn't sit in level flight attitude on the ground. it is even more nose up without the weight of an engine...
Forum: RV-12/RV-12iS 08-08-2020, 05:36 PM
Replies: 15
Views: 1,194
Posted By rvbuilder2002
Right Tom That is why I was asking that the OP...

Right Tom

That is why I was asking that the OP post a photo of his cowl inlet.
Forum: RV-12/RV-12iS 08-08-2020, 05:36 PM
Replies: 15
Views: 1,194
Posted By rvbuilder2002
Yes, I know that, but a lot of people don't. ...

Yes, I know that, but a lot of people don't. They use the Evans straight per the instructions, thinking that it will be a better coolant choice.

It's only benefit is that it has a higher boiling...
Forum: RV-12/RV-12iS 08-08-2020, 02:46 PM
Replies: 8
Views: 503
Posted By rvbuilder2002
Yes, you should be able to set that pitch value...

Yes, you should be able to set that pitch value with it in place.
Are you having trouble doing that?
Forum: RV-12/RV-12iS 08-08-2020, 02:43 PM
Replies: 8
Views: 587
Posted By rvbuilder2002
It looks like Red RTV was used on the ends of the...

It looks like Red RTV was used on the ends of the springs.

Can't tell if it was used inside the springs (current rev. level of KAI recommends a stripe of RTV on the outside, 2 sides)

If you haven't...
Forum: RV-14 08-08-2020, 12:59 PM
Replies: 5
Views: 649
Posted By rvbuilder2002
There is a pretty large weight delta between the...

There is a pretty large weight delta between the parallel valve and the angle valve engines.

There would be a rather serious C.G. issue to deal with if a parallel valve engine was used (particularly...
Forum: RV General Discussion/News 08-08-2020, 12:56 PM
Replies: 84
Views: 5,616
Posted By rvbuilder2002
There are good reasons for both ways.....

As a standard Van's Aircraft practice, all company demonstrators are always parked with the flaps down.

I have seen comments along the lines of "If it is someone I trust getting in my airplane, I...
Forum: RV-12/RV-12iS 08-08-2020, 12:41 PM
Replies: 15
Views: 1,194
Posted By rvbuilder2002
Two good points from Vic.... If you chose to use...

Two good points from Vic....

If you chose to use the Evans coolant for some reason, it will make your coolant and CHT temps run higher.

Wrong sensor configured would cause an incorrect temp...
Forum: RV-6/6A 08-08-2020, 09:25 AM
Replies: 8
Views: 701
Posted By rvbuilder2002
The O-320 Mount is an option only used on the RV-7

The O-320 Mount is an option only used on the RV-7
Forum: RV-6/6A 08-07-2020, 07:09 PM
Replies: 8
Views: 701
Posted By rvbuilder2002
Exhaust, baffling, air box, and lower cowl ( or...

Exhaust, baffling, air box, and lower cowl ( or cut off the induction scoop and install an O-360 one.
Forum: RV-12/RV-12iS 08-07-2020, 08:23 AM
Replies: 8
Views: 503
Posted By rvbuilder2002
The adjustment range you see with it installed is...

The adjustment range you see with it installed is probably more than you think it is since 1 degree of pitch change is actually quite a lot of change, performance wise.

There is no negative to you...
Forum: RV-12/RV-12iS 08-05-2020, 02:32 PM
Replies: 15
Views: 1,194
Posted By rvbuilder2002
Post a photo of the inlet opening on your cowl...

Post a photo of the inlet opening on your cowl and of the seals around the radiator (reach the camera up inside the cooling duct and take a photo of teh front of the radiator)
Forum: RV-12/RV-12iS 08-05-2020, 09:07 AM
Replies: 20
Views: 1,603
Posted By rvbuilder2002
The prefab RV-12 tanks are built (and then leak...

The prefab RV-12 tanks are built (and then leak tested) with pride right here at the Van's Aircraft facility in Aurora Oregon. They guys that do the work have built hundreds of tanks.
They are used...
Forum: Safety 08-05-2020, 08:59 AM
Replies: 64
Views: 8,939
Posted By rvbuilder2002
Yes, it is unfortunate that in this day and age...

Yes, it is unfortunate that in this day and age of instant communication, that people assume the worst just because there hasn't been instant response to queries for more info or confirmation that...
Forum: Safety 08-04-2020, 10:38 AM
Replies: 64
Views: 8,939
Posted By rvbuilder2002
Top right hand corner of any forum page... Click...

Top right hand corner of any forum page...
Click on Private Messages below where it says Welcome, FrenchyRV-6A
Forum: RV-12/RV-12iS 08-04-2020, 08:57 AM
Replies: 32
Views: 3,002
Posted By rvbuilder2002
All good points Jim, and that is just one benefit...

All good points Jim, and that is just one benefit of personal aircraft ownership... becoming intimately familiar with an airplane.

But all of the things you mentioned are not a good argument for...
Forum: Safety 08-04-2020, 08:43 AM
Replies: 64
Views: 8,939
Posted By rvbuilder2002
Jean, There are differences between the RV-6 and...

Jean,
There are differences between the RV-6 and RV-7 but they weren't made to correct a problem. The RV-7 has a much higher Vne than the RV-6. There are 2000+ RV-6's flying with the same rudder...
Forum: RV-14 08-03-2020, 11:42 PM
Replies: 5
Views: 381
Posted By rvbuilder2002
When a part has been fluted too much, you can...

When a part has been fluted too much, you can adjust it by flattening flutes as long as you don’t get carried away.
Forum: RV-14 08-03-2020, 12:49 PM
Replies: 5
Views: 381
Posted By rvbuilder2002
Fluting is a "do it the amount required"...

Fluting is a "do it the amount required" process.
Sometimes just a very small amount is needed, and some times a lot is needed.

The amount required will be directly proportional to how tight the...
Forum: Traditional Aircraft Engines 08-02-2020, 08:37 PM
Replies: 11
Views: 829
Posted By rvbuilder2002
I can't comment on the impact of filter changes...

I can't comment on the impact of filter changes on the other adapters you mentioned, but your ant. mount would totally block the access path I use to change filters on engines with the standard...
Forum: RV-12/RV-12iS 08-02-2020, 08:26 PM
Replies: 7
Views: 676
Posted By rvbuilder2002
I don't think this (link below) is the specific...

I don't think this (link below) is the specific one, but our SLSA production facility has a couple of small box type digital levels that are magnetic and fit the Van's prop pitch tool...
Forum: RV-12/RV-12iS 08-02-2020, 08:21 PM
Replies: 7
Views: 676
Posted By rvbuilder2002
A number of us have told him that, and the...

A number of us have told him that, and the instructions in the KAI are very specific (and don't say to level the airplane).

But if it works for him......

For everyone else... The pitch value...
Forum: RV-12/RV-12iS 08-02-2020, 04:25 PM
Replies: 7
Views: 676
Posted By rvbuilder2002
For the smoothest operation possible, I strive...

For the smoothest operation possible, I strive for the exact same reading to the tenth of a degree but will accept up to .1 degree difference if that is where it is once all of the bolts are...
Forum: RV-14 08-02-2020, 12:33 PM
Replies: 3
Views: 480
Posted By rvbuilder2002
I think a true fowler flap extends aft before it...

I think a true fowler flap extends aft before it begins to deflect, so they are not true fowler flaps (though with the hinge geometry used they do increase the wing cord as they deploy so slotted...
Forum: Safety 08-02-2020, 09:03 AM
Replies: 64
Views: 8,939
Posted By rvbuilder2002
It would be helpful if you further explained...

It would be helpful if you further explained “Repositioned empennage fwd 1 inch”.
To do this it would require major structural changes to the fuselage and/or emp attachment.
Forum: VAF Classifieds (posts in here deleted after 30 days) 08-01-2020, 11:30 PM
Replies: 4
Views: 1,097
Posted By rvbuilder2002
PM me if you decide to break it up. I may be...

PM me if you decide to break it up.
I may be interested in the complete kit minus the sump.
Forum: RV-12/RV-12iS 07-31-2020, 03:26 PM
Replies: 1
Views: 482
Posted By rvbuilder2002
Perfect example of the innovators that many...

Perfect example of the innovators that many experimental aircraft owners are.
I think most pilots are fully adapted to setting trim based on feel though so probably don’t need high resolution in the...
Forum: RV-14 07-30-2020, 03:09 PM
Replies: 84
Views: 12,419
Posted By rvbuilder2002
The airplane currently has the same Hartzel...

The airplane currently has the same Hartzel blended airfoil propeller that was on the airplane when the IO-390A engine.

Greg posted a couple of videos to the Van's Aircraft Facebook Page...
Forum: RV-14 07-29-2020, 03:20 PM
Replies: 84
Views: 12,419
Posted By rvbuilder2002
I haven't noticed any difference between the...

I haven't noticed any difference between the original exhaust configuration and the new 4 in 2 system.



All good questions, and ones that we will post details about when all of the detailed flight...
Forum: RV-12/RV-12iS 07-29-2020, 12:52 PM
Replies: 32
Views: 3,002
Posted By rvbuilder2002
This method was developed (with Rotax's...

This method was developed (with Rotax's blessing), primarily for the flight school environment.
They have multiple pilots flying the airplane during any given day, and the oil is likely to be checked...
Forum: RV General Discussion/News 07-28-2020, 10:23 PM
Replies: 6
Views: 689
Posted By rvbuilder2002
That is way off what is typical. When the new...

That is way off what is typical.

When the new Pressure recovery wheel pants and leg fairings were introduced, testing showed a speed gain of about 7 mph over the original fairings.
People...
Forum: Propellers 07-27-2020, 10:42 AM
Replies: 1
Views: 307
Posted By rvbuilder2002
In the past when wood props were far more...

In the past when wood props were far more popular, there was no universally accept standard hub thickness adopted by all of the different prop makers. It seemed they all just did what the wanted and...
Forum: RV-12/RV-12iS 07-27-2020, 10:35 AM
Replies: 9
Views: 1,230
Posted By rvbuilder2002
Unusual wear and hing breakage can usually be...

Unusual wear and hing breakage can usually be traced back to one or both of two things.


Excess vibration caused by engine / prop. imbalance (usually eliminated by doing a dynamic prop...
Forum: RV-14 07-27-2020, 10:09 AM
Replies: 84
Views: 12,419
Posted By rvbuilder2002
If it is, it is not enough that it is...

If it is, it is not enough that it is noticeable.

From the outside, the perception is that it is very slightly louder but that may just be the result of it having a different tone rather than an...
Forum: RV-14 07-27-2020, 10:06 AM
Replies: 84
Views: 12,419
Posted By rvbuilder2002
I don't know the specifics of how they intend to...

I don't know the specifics of how they intend to integrate the change over.
It is possible that the back order is the result of the 4" version being dropped from production, or that since the welding...
Forum: RV-12/RV-12iS 07-27-2020, 09:58 AM
Replies: 32
Views: 3,002
Posted By rvbuilder2002
Rotax specifies the burping procedure for only...

Rotax specifies the burping procedure for only one purpose.......
To accurately check the oil level.

If you look at the shape of the engine case, you will see that even if the majority of the oil...
Forum: RV-14 07-25-2020, 08:50 AM
Replies: 2
Views: 540
Posted By rvbuilder2002
The RV-14 horizontal stabilizer is constant cord...

The RV-14 horizontal stabilizer is constant cord (no taper) so the rib flanges should all be 90 degrees.
The vertical stab. does taper so it’s rib flanges are not 90 degrees.
Forum: RV Building Tips/Techniques 07-25-2020, 08:39 AM
Replies: 3
Views: 1,015
Posted By rvbuilder2002
Looks great. The down side to anodizing is that...

Looks great.
The down side to anodizing is that all of the processes are effected by fading over time from UV exposure. It varies by process used but all seem to do it to some degree.
Forum: RV-14 07-24-2020, 07:44 PM
Replies: 84
Views: 12,419
Posted By rvbuilder2002
This was somewhat a collaborative effort with...

This was somewhat a collaborative effort with Lycoming (a benefit from our customers being a major consumer of Lycoming engines I would guess) so the configuration of the engine wasn't a surprise,...
Forum: RV-14 07-24-2020, 07:21 PM
Replies: 84
Views: 12,419
Posted By rvbuilder2002
If the proper part changes are made, as Greg...

If the proper part changes are made, as Greg alluded to.

The exhaust requires that the new version induction tubes be used... the exhaust is a very tight fit to the engine for the new cowl profile...
Forum: RV-12/RV-12iS 07-24-2020, 03:49 PM
Replies: 21
Views: 1,529
Posted By rvbuilder2002
True, but then you have to buy only what they...

True, but then you have to buy only what they have available.
If you make your own, you can custom make the shape and not even have to wait for it to come in the mail.......

An alternative to...
Forum: RV-14 07-23-2020, 05:45 PM
Replies: 84
Views: 12,419
Posted By rvbuilder2002
No The new exhaust design is a 4 into 2 system...

No
The new exhaust design is a 4 into 2 system with with each of the exit pipes passing through their own exit tunnel that is molded into the new design lower cowl.

The cowl fits quite tightly to...
Forum: RV-14 07-23-2020, 08:30 AM
Replies: 5
Views: 699
Posted By rvbuilder2002
A far bigger influence on empty C.G. (compared to...

A far bigger influence on empty C.G. (compared to all of the things you mentioned), is what prop. you chose to use.

If the blended airfoil Hartzel is used (like is on the prototype/demonstrator and...
Forum: RV-12/RV-12iS 07-23-2020, 08:21 AM
Replies: 16
Views: 1,974
Posted By rvbuilder2002
I would caution other RV owners against using...

I would caution other RV owners against using this technique to balance aircraft tires.

The reason we liberally coat the surface of the tube and the inside of the tire with talc is for it to act as...
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