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Search: Posts Made By: lr172
Forum: Primers Yesterday, 11:38 AM
Replies: 8
Views: 296
Posted By lr172
While much safer to use, I would expect that...

While much safer to use, I would expect that adhesion may not be as strong as more typical primers that will cross link (i.e. chemically bond) with the top coat. You would be limited to just...
Forum: RV-10 Yesterday, 08:05 AM
Replies: 3
Views: 229
Posted By lr172
Use the #40 countersink bit that you use for -3...

Use the #40 countersink bit that you use for -3 rivets. Best to drill first with #40 bit, CS then drill 36 and tap. It will still work if you already drilled it, but still best to do the...
Forum: Painting your RV Yesterday, 07:51 AM
Replies: 11
Views: 576
Posted By lr172
I disagree. When I paint something like a plane,...

I disagree. When I paint something like a plane, I would estimate that 95% of the time involved is pre-spray or post-spray work and 5% is actually spraying of the paint itself. SS is one spray...
Forum: Traditional Aircraft Engines Yesterday, 07:45 AM
Replies: 8
Views: 241
Posted By lr172
Sorry, missed that in your post.

Sorry, missed that in your post.
Forum: RV-7/7A Yesterday, 07:37 AM
Replies: 9
Views: 259
Posted By lr172
Need to read the installation manual. Most list...

Need to read the installation manual. Most list a maximum distance offset from the aircraft's longitudinal center line and it is usually only a couple feet.
Forum: Primers Yesterday, 07:03 AM
Replies: 8
Views: 296
Posted By lr172
FYI, 2K means two part or Catalyzed. It is a...

FYI, 2K means two part or Catalyzed. It is a generic term in the paint industry.

Unfamiliar with a product like that mentioned. Most quality PU paints and primers use Isocyanates as the catalyst...
Forum: Glass Cockpit 09-23-2022, 11:39 AM
Replies: 15
Views: 1,611
Posted By lr172
On the 10, I placed the OAT on an angle bracket...

On the 10, I placed the OAT on an angle bracket that is bolted to the aft Hor Stab spar attach. Complete shade and the negative pressure of the fuselage is constantly pulling air into the fuse from...
Forum: Traditional Aircraft Engines 09-23-2022, 11:02 AM
Replies: 8
Views: 241
Posted By lr172
While not an expert in pump design theory or...

While not an expert in pump design theory or diagnostics, based upon my understanding of the mechanical principles involved with these pumps, I really struggle to see how any mechanical issue in the...
Forum: RV-14 09-23-2022, 10:50 AM
Replies: 13
Views: 1,028
Posted By lr172
+1 When I did my IFR training, the pitch...

+1

When I did my IFR training, the pitch sensitivity of the 6 was a bit problematic for holding 100" altitude on the gauges as a novice. It took some time to make the elevator skins perfectly flat,...
Forum: RV Ongoing Maintenance Issues 09-23-2022, 08:45 AM
Replies: 7
Views: 437
Posted By lr172
The Garmin servo does NOT provide trim control...

The Garmin servo does NOT provide trim control directly. It can only send electricity to a dedicated trim servo motor to achieve trim changes. I would follow that cable all the way to the trim...
Forum: Traditional Aircraft Engines 09-23-2022, 07:14 AM
Replies: 8
Views: 241
Posted By lr172
There is a diaphragm with to check valves, inlet...

There is a diaphragm with to check valves, inlet and outlet. When the diaphragm relaxes, the outlet closes and the inlet opens. As it compresses, the inlet closes and the outlet opens. The pumps...
Forum: RV General Discussion/News 09-22-2022, 12:47 PM
Replies: 19
Views: 1,841
Posted By lr172
+1 My son was required to do a full, power off...

+1

My son was required to do a full, power off stall with proper recovery for his PPL a year ago. They wanted him to go past the break and to see the nose fall to assess his recovery skill. ...
Forum: Electrical Systems 09-22-2022, 11:16 AM
Replies: 30
Views: 4,483
Posted By lr172
Go look at the price for a 28V alternator and...

Go look at the price for a 28V alternator and compare that to the $50 many of us pay for an automotive 12V version. Then tell us if it is still better on paper. Then go find trim motors, flap...
Forum: Electrical Systems 09-22-2022, 11:11 AM
Replies: 30
Views: 4,483
Posted By lr172
I got a great deal on an old King 24V comm radio....

I got a great deal on an old King 24V comm radio. I made an inexpensive buck converter array to up the 12->24 volts. I needed two units to handle the current and instead wired four of them in...
Forum: Propellers 09-22-2022, 10:38 AM
Replies: 37
Views: 1,986
Posted By lr172
Look closely at Pic #4. I can see what appears...

Look closely at Pic #4. I can see what appears to be a kink/bend in the pin's wall right where the nut and stud meet. IMHO, those pins should have been installed with the split oriented...
Forum: RV Ongoing Maintenance Issues 09-22-2022, 07:55 AM
Replies: 7
Views: 437
Posted By lr172
Jam nut should be tight, but if it gets loose,...

Jam nut should be tight, but if it gets loose, the clevice cannot spin and it seems improbable that the cable could rotate any meaningfull amount with the relatively tight radius bend that it has at...
Forum: Primers 09-22-2022, 07:42 AM
Replies: 19
Views: 2,612
Posted By lr172
+1 That looks exactly like the corrosion that...

+1

That looks exactly like the corrosion that appears regardless of salt when the plastic covering is left on. You can even see the outline of exactly where the plastic lifted off the metal due to...
Forum: RV General Discussion/News 09-22-2022, 07:30 AM
Replies: 19
Views: 1,841
Posted By lr172
Wink My son completed his PPL training a year ago in...

My son completed his PPL training a year ago in our 6A. He has never even sat in a classic trainer. While the insurance is steep, I would argue that it is a good bit less expensive to train in your...
Forum: Electrical Systems 09-21-2022, 09:59 AM
Replies: 15
Views: 997
Posted By lr172
Clearly we are interpreting the manuals...

Clearly we are interpreting the manuals differently. THe quotation above refrers to reserve capactiy, which is what the battery will deliver over a 20 hour period and the test proves that 80% of THE...
Forum: Fuel Injection Systems 09-21-2022, 07:46 AM
Replies: 10
Views: 481
Posted By lr172
I edited my post to say "on the bendix and have...

I edited my post to say "on the bendix and have no knowledge of the AFP" apparently after you quoted this. Apparently the AFP provides field replaceable jets for adjusting WOT mixture so my...
Forum: Fuel Injection Systems 09-21-2022, 07:25 AM
Replies: 10
Views: 481
Posted By lr172
There is no external adjustment for fuel flow at...

There is no external adjustment for fuel flow at WOT at least on the bendix style and assume the AFP is the same, but not sure. Various things can be tweaked inside the unit to set fuel flow to any...
Forum: Electrical Systems 09-20-2022, 12:36 PM
Replies: 15
Views: 997
Posted By lr172
Sorry, but no one selling to the retail sector,...

Sorry, but no one selling to the retail sector, excluding Earth X, markets their batteries that way. They list an Ah rating at a specific discharge rate and that rate is almost NEVER the Ah rating. ...
Forum: Electrical Systems 09-20-2022, 12:34 PM
Replies: 15
Views: 997
Posted By lr172
Standby, I am sure Ron will com along and call...

Standby, I am sure Ron will com along and call you crazy as he did with me. The above is for lead acid. Most Lithium providers, Earth x excluded, list their Ah ratings as PB equivalent and will be...
Forum: RV Building Tips/Techniques 09-20-2022, 06:52 AM
Replies: 31
Views: 2,705
Posted By lr172
When spraying paint, most experienced folks will...

When spraying paint, most experienced folks will tell you to ALWAYS run MAX pressure through the hose and regulate at the gun. This is especially true with HVLP that needs a lot of flow. Reducing...
Forum: RV-10 09-20-2022, 06:35 AM
Replies: 25
Views: 2,176
Posted By lr172
Lets try to keep our assistance to realistic data...

Lets try to keep our assistance to realistic data here. I put in an aerosport O/H console. It is carbon fiber and can't weigh more than 3 lbs. AC system data that I have seen put the weight in the...
Forum: RV-10 09-20-2022, 06:31 AM
Replies: 25
Views: 2,176
Posted By lr172
You will find that most lithium battery sellers...

You will find that most lithium battery sellers use PB equivalent ratings. That means that a 100 Ah battery can deliver 100 amps for about 5-10 minutes. Even Lead Acid batteries set the Ah rating...
Forum: RV-10 09-19-2022, 10:39 AM
Replies: 25
Views: 2,176
Posted By lr172
Not practical. An electric A/C system that can...

Not practical.

An electric A/C system that can produce the 8K BTU minimum to be worthwhile is going to require at least a 120A alternator and even with that, you will be draining the batteries...
Forum: VAF Classifieds (posts in here deleted after 30 days) 09-19-2022, 10:24 AM
Replies: 2
Views: 336
Posted By lr172
WTB: Transponder

I have a buddy with a Warrior whose transponder just died and looking to help him out. KT series or 327 would be best for ease of installation.

Larry
Forum: RV Building Tips/Techniques 09-19-2022, 07:40 AM
Replies: 31
Views: 2,705
Posted By lr172
+1 It is a bit of an art, but mastering trigger...

+1

It is a bit of an art, but mastering trigger control is a better all around solution, as the builder can adjust for every situation without having to worry about going back to the regulator. It...
Forum: Electrical Systems 09-19-2022, 07:17 AM
Replies: 6
Views: 316
Posted By lr172
Generally, resistance on the voltage sense...

Generally, resistance on the voltage sense circuit results in higher than normal Alt output voltage, not lower. The resistance lowers the voltage that the regulator sees on it's sense input and in...
Forum: Electrical Systems 09-19-2022, 07:14 AM
Replies: 6
Views: 316
Posted By lr172
No. The battery is floating above 13 volts and...

No. The battery is floating above 13 volts and not adding energy. It is a sign of the ALTERNATOR not meeting electrical demand OR not properly managing th voltage level.

Larry
Forum: RV Building Tips/Techniques 09-19-2022, 07:11 AM
Replies: 5
Views: 310
Posted By lr172
Floatation foam is designed to sit in boat hulls...

Floatation foam is designed to sit in boat hulls and many application have almost constant water contact. It seems unlikely that it is not designed to handle this environment.

Larry
Forum: Traditional Aircraft Engines 09-19-2022, 06:53 AM
Replies: 6
Views: 362
Posted By lr172
Warm engines spin easier (i.e. requiring less...

Warm engines spin easier (i.e. requiring less amperage) than cold ones, so that possibly explains the variances you see. Likely issue is not enough current getting to the starter. Problems with...
Forum: Safety 09-18-2022, 10:12 AM
Replies: 11
Views: 1,412
Posted By lr172
I have no idea, but I do know that MANY...

I have no idea, but I do know that MANY industries are seeing employee shortages since the covid fiasco. I am sure some of that is unusually large quantities of early retirements we saw post-covid,...
Forum: RV-10 09-18-2022, 06:49 AM
Replies: 6
Views: 807
Posted By lr172
The transluscent tan/brown stuff in pic 3 is...

The transluscent tan/brown stuff in pic 3 is glazing. There is a only a small amount of it, so no surprise that oil consumption is in the normal category. However, some see 20 hrs/qt and this type...
Forum: Traditional Aircraft Engines 09-17-2022, 07:34 AM
Replies: 10
Views: 1,358
Posted By lr172
Very good advice, but I would argue that the...

Very good advice, but I would argue that the overlap promotes flow from intake to exhaust during the overlap period. The Exh tends to have a lower pressure due to the velocity than the intake and...
Forum: Traditional Aircraft Engines 09-17-2022, 07:22 AM
Replies: 10
Views: 1,358
Posted By lr172
While it is a heat signature, it is not...

While it is a heat signature, it is not necessarily burning, as when this pattern is seen on the exh valve. Intake valves tend to get different deposits that can only form on that valve because it...
Forum: Safety 09-16-2022, 10:01 AM
Replies: 66
Views: 5,331
Posted By lr172
Ok. It takes about 1/2 an amp @12V to move the...

Ok. It takes about 1/2 an amp @12V to move the motor Show me a method for inducing 1/2 amp of current into a wire from one mile away. That is a seriously strong signal I am quite confident that...
Forum: RV-10 09-16-2022, 07:07 AM
Replies: 25
Views: 2,176
Posted By lr172
Similar to Bob's opinion, there are trade off's...

Similar to Bob's opinion, there are trade off's to be made. I would argue that you probably can't carry family and friends with A/C if that family/friends equaled 4 contemporary, adult sized people;...
Forum: RV-14 09-16-2022, 06:58 AM
Replies: 16
Views: 1,344
Posted By lr172
I speculate that part of the crazy run up in...

I speculate that part of the crazy run up in prices we have seen is due to increasing acceptance of experimental planes by the GA community, thereby increasing the demand side of the equation. If...
Forum: RV-10 09-16-2022, 06:44 AM
Replies: 6
Views: 807
Posted By lr172
+1 When you get corrosion spots like that, a...

+1

When you get corrosion spots like that, a thou more or less of metal turns to rust and later disappears, leaving a crater. Once this happens, the ring no longer rides on that surface and it will...
Forum: Traditional Aircraft Engines 09-16-2022, 06:40 AM
Replies: 9
Views: 1,193
Posted By lr172
DLC coating is just on the lifters, not the cam...

DLC coating is just on the lifters, not the cam lobes, and I don't think lyc is putting these lifters on new engines, though I don't know. Given how hard they are to find, I doubt it. I put them on...
Forum: Traditional Aircraft Engines 09-16-2022, 06:18 AM
Replies: 9
Views: 1,193
Posted By lr172
WHile a couple shell have spots that have the tin...

WHile a couple shell have spots that have the tin layer gone, and that points to wear. Whether or not they are problems cannot be done visually. You need a bore gauge to determine the clearance and...
Forum: GPS 09-13-2022, 10:49 AM
Replies: 20
Views: 949
Posted By lr172
The small electrical surge from the collapsing...

The small electrical surge from the collapsing field is generated on the activation side of the relay/solenoid, not the pass through side. The contacts are opening as the field collapses so it is...
Forum: Safety 09-13-2022, 07:17 AM
Replies: 66
Views: 5,331
Posted By lr172
While the symptoms certainly sound like some kind...

While the symptoms certainly sound like some kind of ground interference, I am struggling to see how that can happen via trim, as the trim system is dead simple. 12V through relays to a dc motor. ...
Forum: RV General Discussion/News 09-12-2022, 07:26 AM
Replies: 44
Views: 3,427
Posted By lr172
Have you ever examined the sealing mechanism in a...

Have you ever examined the sealing mechanism in a schrader valve? It is a very small cap with rubber and a very weak spring. If any dirt particles enter the stem, they will be forced into the small...
Forum: RV Ongoing Maintenance Issues 09-11-2022, 09:48 AM
Replies: 19
Views: 1,145
Posted By lr172
This is why I prefer pressure from the bottom vs...

This is why I prefer pressure from the bottom vs vacuum from the top. The former forces fluid past the threads, where the latter suck air in through the threads. I made a bottle with a cheap...
Forum: RV General Discussion/News 09-11-2022, 07:49 AM
Replies: 60
Views: 5,891
Posted By lr172
That is an incredibly tall order and seems highly...

That is an incredibly tall order and seems highly unlikely they could pull that off. Fed's likely to step in and put a halt to that. We have a limited number of refineries in this country that...
Forum: RV General Discussion/News 09-11-2022, 07:41 AM
Replies: 60
Views: 5,891
Posted By lr172
I wouldn't worry about that. They can bark all...

I wouldn't worry about that. They can bark all they want, but we are currently in the middle of a pretty meaningfull pilot shortage and the only real path to making new pilots is through the GA...
Forum: Glass Cockpit 09-09-2022, 10:52 AM
Replies: 7
Views: 858
Posted By lr172
certainly sounds like a HW or SW issue in the PFD.

certainly sounds like a HW or SW issue in the PFD.
Forum: VAF Classifieds (posts in here deleted after 30 days) 09-09-2022, 10:21 AM
Replies: 6
Views: 2,776
Posted By lr172
Not sure that is the full story. On both my...

Not sure that is the full story. On both my planes, I had to tell the FSDO inspector that I wanted it to be IFR. If you don't request that, the lims say operation is limited to VFR only. The...
Forum: RV-7/7A 09-09-2022, 07:36 AM
Replies: 16
Views: 1,129
Posted By lr172
[/QUOTE] I have a 6A with an IO-320 and Catto FP...

[/QUOTE]

I have a 6A with an IO-320 and Catto FP prop. I cruise at 160 KTAS LOP @ 8.1 GPH @ 8K. My T/O rolls are pretty short and would never be afraid of a 2000' runway. It is quite possible you...
Forum: RV Ongoing Maintenance Issues 09-09-2022, 07:23 AM
Replies: 19
Views: 1,145
Posted By lr172
Air can get introduced in different ways or it...

Air can get introduced in different ways or it may not be air at all. A defect or failed seal in the master cylinder can also prevent the brake system from building pressure, without fluid leaking...
Forum: RV General Discussion/News 09-08-2022, 12:27 PM
Replies: 15
Views: 1,840
Posted By lr172
At some point you have to pay the piper. It all...

At some point you have to pay the piper. It all depends upon how you look at it. If it will take 10 years to save enough to buy everything needed, it will probably take 15 years to pay back the...
Forum: Traditional Aircraft Engines 09-08-2022, 10:27 AM
Replies: 9
Views: 759
Posted By lr172
What also was interesting is that he mentioned...

What also was interesting is that he mentioned that xylene is in excess in the summer months (they need to refine it out of auto gas for the summer blend), which means it is cheap then. Will be...
Forum: RV-7/7A 09-08-2022, 10:09 AM
Replies: 16
Views: 1,129
Posted By lr172
All engines can have one of three mount styles -...

All engines can have one of three mount styles - conical, dynafocal, dynafocal II (relatively uncommon)

IO-360's come in both parallel valve - 180hp and angle valve - 200hp.

Larry
Forum: RV Ongoing Maintenance Issues 09-08-2022, 08:09 AM
Replies: 2
Views: 303
Posted By lr172
NO Larry

NO

Larry
Forum: RV General Discussion/News 09-08-2022, 07:38 AM
Replies: 60
Views: 5,891
Posted By lr172
Watch the video, as what you stated is NOT...

Watch the video, as what you stated is NOT correct. Yes, refining and blending are different operations, but blending is a large scale, complex process with tight standards and testing involved;It...
Forum: RV General Discussion/News 09-07-2022, 01:34 PM
Replies: 15
Views: 1,840
Posted By lr172
I built my first house myself (acted as General...

I built my first house myself (acted as General Contractor). Insanely difficult to get a construction loan if you work outside of the trades, as I did. It seemed every banker had been burned at...
Forum: RV General Discussion/News 09-07-2022, 08:35 AM
Replies: 9
Views: 622
Posted By lr172
That is counter to the recommendation that I got...

That is counter to the recommendation that I got directly from Robbins wings, the guy who makes the heat muffs for vetterman and others.

Larry
Forum: RV General Discussion/News 09-07-2022, 08:17 AM
Replies: 9
Views: 622
Posted By lr172
Only concern that I see is consuming a lot of...

Only concern that I see is consuming a lot of surface area in cowl air exit path. Unsure if it is enough to reduce flow and therefore cooling capacity though. Several have shown that the A models...
Forum: RV-6/6A 09-07-2022, 07:55 AM
Replies: 21
Views: 2,621
Posted By lr172
The EAA tells us that no EAB builder has LOST a...

The EAA tells us that no EAB builder has LOST a suit. However, that doesn't account for settlements and I am not sure there is any real way to collect that data. The story that I have heard is the...
Forum: RV-6/6A 09-07-2022, 07:37 AM
Replies: 21
Views: 2,621
Posted By lr172
If only liability protection were that easy. ...

If only liability protection were that easy. Cessna gets sued every year for 60 year old airplanes that have been signed off by countless gov't regulated A&P's that have assured their airworthiness....
Forum: RV Ongoing Maintenance Issues 09-07-2022, 07:01 AM
Replies: 10
Views: 780
Posted By lr172
While there is a good chance it is the...

While there is a good chance it is the alternator, it is not necessarily so. Intermittent connection issues in the wiring can also cause symptoms like this. I would go through all the wiring before...
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